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Astrochem Coffee

@astrochemcoffee.bsky.social
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Official account of the Astrochem Coffee Podcast! We'll post here with podcast-related announcements, as well as astrochemistry-relevant literature, job openings, prizes, conferences, etc throughout the month between episodes. coffee.astrochem.net

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Astrochem Coffee @astrochemcoffee.bsky.social · 03/10/2026
Chemical complexity in feedback from supernova remnants: first detection of PO+ in IC443 and W44 Consentino et al. arXiv (A&A) arxiv.org/abs/2610.01211
arxiv.org
Chemical complexity in feedback from supernova remnants: first detection of PO+ in IC443 and W44
Supernova remnant (SNR) may shape the physical and chemical properties of star formation. By releasing refractory elements into the gas phase, they inject material of pre-biotic relevance into…
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Astrochem Coffee @astrochemcoffee.bsky.social · 03/10/2026
Water enhances the formation of refractory sulfur in interstellar ices del Burgo Olivares et al. arXiv (A&A) arxiv.org/abs/2610.00449
arxiv.org
Water enhances the formation of refractory sulfur in interstellar ices
Sulfur is the tenth most abundant element in space, yet it is strongly depleted in the gas phase of dense interstellar regions, suggesting sequestration in dust grain components that are difficult to…
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Astrochem Coffee @astrochemcoffee.bsky.social · 02/10/2026
Computational rate coefficients of isocyanodiacetylene HC4NC by collisions with He and non-LTE modelling Terzi et al. MNRAS academic.oup.com/mnras/advanc...
academic.oup.com
Computational rate coefficients of isocyanodiacetylene HC4NC by collisions with He and non-LTE modelling
Abstract. We present quantum close-coupling calculations for the rotational excitation of the interstellar molecule HC4NC by He collisions using a high-acc
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Astrochem Coffee @astrochemcoffee.bsky.social · 02/10/2026
Laboratory Studies of Interstellar Dust Analogues for Astrochemical Modeling: Challenges and Future Directions for Understanding Chemical Evolution in Star-Forming Regions Acharrya ACS E&SC pubs.acs.org/aesccq/artic...
pubs.acs.org
Laboratory Studies of Interstellar Dust Analogues for Astrochemical Modeling: Challenges and Future Directions for Understanding Chemical Evolution in Star-Forming Regions
Abstract. Astrochemical models are crucial for explaining molecular abundances across diverse astrophysical environments, ranging from the diffuse interste
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Astrochem Coffee @astrochemcoffee.bsky.social · 01/10/2026
The Formate Anion in Interstellar Ices and Laboratory Analogs Hudson et al. ACS E&SC pubs.acs.org/aesccq/artic...
pubs.acs.org
The Formate Anion in Interstellar Ices and Laboratory Analogs
Abstract. Weak infrared (IR) bands near 1384 and 1353 cm–1 (λ = 7.225 and 7.391 μm) have been observed in spectra of dark, cold molecular clouds for nearly
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Astrochem Coffee @astrochemcoffee.bsky.social · 30/09/2026
A JWST Study of Stardust. II. Polycyclic Aromatic Hydrocarbons in Comet 81P/Wild 2 and Implications for Primitive Solar System Carbon Roth et al. arXiv arxiv.org/abs/2609.34116
arxiv.org
A JWST Study of Stardust. II. Polycyclic Aromatic Hydrocarbons in Comet 81P/Wild 2 and Implications for Primitive Solar System Carbon
We report observations of comet 81P/Wild 2, target of the Stardust sample return mission, on UT 2023 March 20 and 24 at a heliocentric distance ($r_H$) of 1.85 au using the NIRSpec and MIRI integral…
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Astrochem Coffee @astrochemcoffee.bsky.social · 29/09/2026
Synthesis of organo-phosphorous species in space: the reaction of P$^+$ with C$_2$H$_2$ Michielan et al. arXiv arxiv.org/abs/2609.33657
arxiv.org
Synthesis of organo-phosphorous species in space: the reaction of P$^+$ with C$_2$H$_2$
Despite its low cosmic abundance, phosphorus is a bioessential element whose prebiotic availability and incorporation into biomolecules remain open questions. Only a few phosphorous containing…
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Astrochem Coffee @astrochemcoffee.bsky.social · 29/09/2026
Diatomic FeH+ has almost all it needs to be a carrier of diffuse interstellar bands Jin et al. JCP pubs.aip.org/aip/jcp/arti...
pubs.aip.org
Diatomic FeH+ has almost all it needs to be a carrier of diffuse interstellar bands
The carriers of the diffuse interstellar bands (DIBs) in the interstellar medium are mostly unidentified, with C60+ as a notable exception. We here present elec
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Astrochem Coffee @astrochemcoffee.bsky.social · 28/09/2026
A Cyanopolyyne-rich but COM-poor Massive Protostar: The First Hot Carbon Chain Chemistry Source G28.28-0.36 Taniguchi et al. arXiv (ApJ) arxiv.org/abs/2609.30654
arxiv.org
A Cyanopolyyne-rich but COM-poor Massive Protostar: The First Hot Carbon Chain Chemistry Source G28.28-0.36
We present molecular emission line data from the massive young stellar object (MYSO) G28.28-0.36 (G28.28) obtained with the Atacama Large Millimeter/submillimeter Array Band 3. Cyanopolyynes (HC$_3$N…
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Astrochem Coffee @astrochemcoffee.bsky.social · 28/09/2026
Collisional excitation of E- and Z-ethanimine to model cold molecular clouds Tonolo et al. arXiv arxiv.org/abs/2609.30505
arxiv.org
Collisional excitation of E- and Z-ethanimine to model cold molecular clouds
Context. Ethanimine is a prebiotically relevant complex organic molecule that has been proposed as a key precursor of amino acids in the interstellar medium. To date, both its E and Z isomers have…
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Astrochem Coffee @astrochemcoffee.bsky.social · 26/09/2026
Formation of adducts of C$_6$H with Na$^+$, Mg$^+$ and Al$^+$ metal cations by radiative association Bulut et al. arXiv arxiv.org/abs/2609.30126
arxiv.org
Formation of adducts of C$_6$H with Na$^+$, Mg$^+$ and Al$^+$ metal cations by radiative association
The Mg-bearing cations MgC$_4$H$^+$, MgC$_6$H$^+$, MgC$_3$N$^+$, and MgC$_5$N$^+$ have been recently observed in the carbon-rich envelope IRC\,+10216. These species are thought to form upon radiative…
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Astrochem Coffee @astrochemcoffee.bsky.social · 24/09/2026
Laboratory Evidence that Methanol-Rich Ice Mantles Lower Methyl Formate Binding Energies Gross et al. arXiv arxiv.org/abs/2609.27031
arxiv.org
Laboratory Evidence that Methanol-Rich Ice Mantles Lower Methyl Formate Binding Energies
Complex organic molecules are widely detected in star-forming regions and are important precursors to prebiotic species. Because these molecules are thought to form primarily within icy grain…
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Astrochem Coffee @astrochemcoffee.bsky.social · 24/09/2026
High-resolution optical spectroscopy reveals the distinctive volatile composition of the interstellar comet 3I/ATLAS Aravind et al. arXiv (A&A) arxiv.org/abs/2609.26577
arxiv.org
High-resolution optical spectroscopy reveals the distinctive volatile composition of the interstellar comet 3I/ATLAS
Comets preserve volatile material from the early stages of planetary-system formation. The discovery of the interstellar comet 3I/ATLAS enables a direct comparison between a comet formed around…
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Astrochem Coffee @astrochemcoffee.bsky.social · 23/09/2026
Molecules in the shadows of the protoplanetary disk HD 143006: Evidence for C/O $\gtrsim 1$ from simultaneously modeling fourteen ALMA lines van Terwisga et al. arXiv (A&A) arxiv.org/abs/2609.26433
arxiv.org
Molecules in the shadows of the protoplanetary disk HD 143006: Evidence for C/O $\gtrsim 1$ from simultaneously modeling fourteen ALMA lines
The inner disk of the T Tauri star HD 143006 is inclined and casts a broad shadow on a large portion of the outer disk. We use this extraordinary geometry to study the impact of stellar ultraviolet…
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Astrochem Coffee @astrochemcoffee.bsky.social · 22/09/2026
Sulfur-bearing molecules in a sample of active star-forming cores Taboada et al. arXiv (A&A) arxiv.org/abs/2609.23030
arxiv.org
Sulfur-bearing molecules in a sample of active star-forming cores
Astrochemical processes involving sulfur are not yet well understood because cosmic sulfur reservoirs and the production pathways of sulfur-bearing species remain elusive. Addressing this, requires…
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Astrochem Coffee @astrochemcoffee.bsky.social · 22/09/2026
Gas phase Elemental abundances in Molecular cloudS (GEMS) XII. First look into the para-to-ortho ratio of c-C3D2 towards prestellar cores Ferrer Asensio et al. arXiv arxiv.org/abs/2609.24285
arxiv.org
Gas phase Elemental abundances in Molecular cloudS (GEMS) XII. First look into the para-to-ortho ratio of c-C3D2 towards prestellar cores
Symmetric molecules with identical nuclei form distinct nuclear spin isomers (ortho and para) that cannot interconvert via radiative or inelastic transitions, preserving clues about formation…
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Astrochem Coffee @astrochemcoffee.bsky.social · 20/09/2026
Sub-arcsecond imaging of HCN and CN in the Orion Bar. UV-driven warm Nitrogen chemistry in dense environments Zannese et al. arXiv (A&A) arxiv.org/abs/2609.19361
arxiv.org
Sub-arcsecond imaging of HCN and CN in the Orion Bar. UV-driven warm Nitrogen chemistry in dense environments
Rotationally excited HCN and CN lines, due to their high critical densities, are often used as tracers of gas densities. ALMA, with its high spectral and spatial resolution, provides unique access to…
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Astrochem Coffee @astrochemcoffee.bsky.social · 20/09/2026
Mapping Molecular Ion Distributions in a Diverse Sample of Protoplanetary Disks Long et al. arXiv (ApJ) arxiv.org/abs/2609.19313
arxiv.org
Mapping Molecular Ion Distributions in a Diverse Sample of Protoplanetary Disks
Observations of ionization-tracing molecules in protoplanetary disks suggest that their ionization environments are diverse due to varying degrees of cosmic ray modulation, stellar activity, and…
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Astrochem Coffee @astrochemcoffee.bsky.social · 20/09/2026
Local constraints on alcohol--thioalcohol analogs in G35.2N Xu et al. arXiv (A&A) arxiv.org/abs/2609.20671
arxiv.org
Local constraints on alcohol--thioalcohol analogs in G35.2N
The chemistry of sulfur-bearing complex organic molecules in dense star-forming environments remains uncertain, partly because the dominant sulfur reservoirs in dense gas and ices are poorly…
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Astrochem Coffee @astrochemcoffee.bsky.social · 19/09/2026
JWST Reveals Refractory-Rich Water Ice in Interstellar Comet 3I/ATLAS: Evidence for a Continuum of Grain Properties across Protoplanetary Disks Protopapa et al. arXiv (ApJL) arxiv.org/abs/2609.19286
arxiv.org
JWST Reveals Refractory-Rich Water Ice in Interstellar Comet 3I/ATLAS: Evidence for a Continuum of Grain Properties across Protoplanetary Disks
We present JWST/NIRSpec PRISM observations of the interstellar comet 3I/ATLAS obtained on 2025 August 6 (Epoch 1), 2025 December 22 (Epoch 2), and 2026 April 1 (Epoch 3), spanning eight months around…
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Astrochem Coffee @astrochemcoffee.bsky.social · 19/09/2026
Interstellar disparity: N- vs O-bearing molecules: A multidisciplinary perspective across interstellar environments Bouvier et al. arXiv (PASP) arxiv.org/abs/2609.20551
arxiv.org
Interstellar disparity: N- vs O-bearing molecules: A multidisciplinary perspective across interstellar environments
Observations of O- and N-bearing molecules reveal systematic chemical differentiation across a wide range of interstellar environments. This pattern is peculiar and its origin likely reflects a…
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Astrochem Coffee @astrochemcoffee.bsky.social · 19/09/2026
The Galactic centre G+0.633-0.0604 molecular cloud: A new astrochemical gold mine: II. Chemical richness San Andrés et al. arXiv (A&A) arxiv.org/abs/2609.20440
arxiv.org
The Galactic centre G+0.633-0.0604 molecular cloud: A new astrochemical gold mine: II. Chemical richness
In recent years, the inventory of interstellar molecules has rapidly grown, yet detections of complex species are confined to a few chemically rich sources, raising the question of whether such…
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Astrochem Coffee @astrochemcoffee.bsky.social · 19/09/2026
Thioacetaldehyde (CH3CHS) on interstellar ices: a key molecule to unravel two chemical dichotomies in the ISM Mallo et al. arXiv (MNRAS) arxiv.org/abs/2609.20506
arxiv.org
Thioacetaldehyde (CH3CHS) on interstellar ices: a key molecule to unravel two chemical dichotomies in the ISM
Thioacetaldehyde (CH3CHS), recently detected in TMC-1, has an abundance approximately 36 times lower than its oxygen analog, acetaldehyde (CH3CHO). This makes the CH3CHS/CH3CHO pair the one with the…
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Astrochem Coffee @astrochemcoffee.bsky.social · 19/09/2026
Around the water snowline: I. Effects of dynamical and chemical interplay on mid-infrared water spectra of protoplanetary discs Kaeufer et al. MNRAS academic.oup.com/mnras/advanc...
academic.oup.com
Around the water snowline: I. Effects of dynamical and chemical interplay on mid-infrared water spectra of protoplanetary discs
Abstract. Protoplanetary discs’ infrared water spectra (e.g. as observed by JWST) encode information about the underlying water distribution and physical c
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Astrochem Coffee @astrochemcoffee.bsky.social · 18/09/2026
Pulsed ion deflection to overcome detector saturation in cryogenic ice sampling Samarth et al. arXiv arxiv.org/abs/2609.17873
arxiv.org
Pulsed ion deflection to overcome detector saturation in cryogenic ice sampling
In 2014, we introduced a new experimental approach to study the UV photo-processing of cryogenic ices of astrophysical interest using laser ablation in combination with ionization and time-of-flight…
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Astrochem Coffee @astrochemcoffee.bsky.social · 18/09/2026
Quantifying the temperature-dependent yields of N$_2$ and N$_2$H$_4$ formation in vacuum-ultraviolet-irradiated NH$_3$ ice Samarth et al. arXiv arxiv.org/abs/2609.17878
arxiv.org
Quantifying the temperature-dependent yields of N$_2$ and N$_2$H$_4$ formation in vacuum-ultraviolet-irradiated NH$_3$ ice
Gas--grain astrochemical models predict that a substantial fraction of elemental nitrogen in dense cores and protoplanetary disks is locked in molecular nitrogen (N$_2$), in the gas or ice phase,…
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Astrochem Coffee @astrochemcoffee.bsky.social · 18/09/2026
In situ characterization of volatile and refractory hydrocarbons produced by UV photolysis of interstellar C$_2$H$_2$ ice Samarth et al. arXiv arxiv.org/abs/2609.17867
arxiv.org
In situ characterization of volatile and refractory hydrocarbons produced by UV photolysis of interstellar C$_2$H$_2$ ice
Acetylene (C$_2$H$_2$) is commonly observed in star-forming regions, young stellar objects, and the Solar System. Laboratory and theoretical studies have linked this simplest alkyne to volatile…
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Astrochem Coffee @astrochemcoffee.bsky.social · 17/09/2026
Rotational spectroscopy and astronomical search of propane-1-thiol (CH3CH2CH2SH) and propane-2-thiol ((CH3)2CHSH) Song et al. arXiv arxiv.org/abs/2609.18896
arxiv.org
Rotational spectroscopy and astronomical search of propane-1-thiol (CH3CH2CH2SH) and propane-2-thiol ((CH3)2CHSH)
This study focuses on propanethiol (or propyl mercaptan, C3H7SH), a sulfur analogue of propanol and a key target for investigating interstellar sulfur chemistry. We report the laboratory rotational…
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Astrochem Coffee @astrochemcoffee.bsky.social · 17/09/2026
Glycine in the interstellar medium revisited: Resolving conformational complexity kinetically Wurmel & Simmie arXiv arxiv.org/abs/2609.17243
arxiv.org
Glycine in the interstellar medium revisited: Resolving conformational complexity kinetically
Numerous attempts to detect glycine, a simple amino acid and a key building block of proteins in all life on Earth, in the interstellar medium have so far been unsuccessful in spite of the fact that…
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Astrochem Coffee @astrochemcoffee.bsky.social · 16/09/2026
How Small is Large Enough? Determining Minimal Cluster Sizes for Molecule Adsorption on Interstellar Amorphous Ice Neyts et al. arXiv arxiv.org/abs/2609.17036
arxiv.org
How Small is Large Enough? Determining Minimal Cluster Sizes for Molecule Adsorption on Interstellar Amorphous Ice
Binding energies of molecules on ice mantles are important to understand the evolution of molecular complexity in molecular clouds. Binding energies are often computed using density functional theory…
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Astrochem Coffee @astrochemcoffee.bsky.social · 15/09/2026
The JWST Proto-PAH Project: Detection of the methyl radical CH$_{3}$ in the highly evolved C-rich object SMP LMC 011 Li et al. arXiv (ApJL) arxiv.org/abs/2609.15905
arxiv.org
The JWST Proto-PAH Project: Detection of the methyl radical CH$_{3}$ in the highly evolved C-rich object SMP LMC 011
We report the first detection of the neutral methyl radical CH$_3$ in a highly evolved C-rich object, SMP LMC 011, using JWST MIRI/MRS. CH$_3$ is well fitted by an excitation temperature of $T_{\rm…
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Astrochem Coffee @astrochemcoffee.bsky.social · 10/09/2026
Origins of complex organic molecules in L1551 IRS 5: Interplay of thermal heating and accretion shocks Kang et al. arXiv (A&A) arxiv.org/abs/2609.07991
arxiv.org
Origins of complex organic molecules in L1551 IRS 5: Interplay of thermal heating and accretion shocks
Complex organic molecules (COMs) are typically observed in the warm inner envelopes of Class 0 protostars. In more evolved Class I sources, COM emission is confined to the compact inner disk and…
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Astrochem Coffee @astrochemcoffee.bsky.social · 04/09/2026
CosmicPAH-IRDB: A Web Application for Including Anharmonicity in Simulated PAH Spectra for Astrophysics Bentzmann et al. arXiv arxiv.org/abs/2609.01696
arxiv.org
CosmicPAH-IRDB: A Web Application for Including Anharmonicity in Simulated PAH Spectra for Astrophysics
Advances in infrared observations with the James Webb Space Telescope (JWST) call for new tools to exploit the information associated with the Aromatic Infrared Bands (AIBs), now observed in both…
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Astrochem Coffee @astrochemcoffee.bsky.social · 03/09/2026
Deuteration of Organic Molecules as a Probe of Starless Core and Filament Evolution in Barnard 10 Andras-Letanovszky et al. arXiv (PASP) arxiv.org/abs/2609.00308
arxiv.org
Deuteration of Organic Molecules as a Probe of Starless Core and Filament Evolution in Barnard 10
The deuterium fractionation of molecules in starless cores is sensitive to their dynamical histories, which recent magnetohydrodynamical simulations have shown to be extremely varied. The deuterated…
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Astrochem Coffee @astrochemcoffee.bsky.social · 03/09/2026
Collisional excitation of cyclopentadiene by helium. A complete set of rate coefficients and astrophysical applications Demes et al. arXiv arxiv.org/abs/2609.01314
arxiv.org
Collisional excitation of cyclopentadiene by helium. A complete set of rate coefficients and astrophysical applications
Complex organic molecules, including large cyclic species, are prevalent in interstellar space and play a key role in various astrochemical processes. Cyclopentadiene (c-C5H6) is a five-membered…
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Astrochem Coffee @astrochemcoffee.bsky.social · 01/09/2026
The Cygnus Allscale Survey of Chemistry and Dynamical Environments: CASCADE: VI. Molecular outflows in the DR21 ridge Skretas et al. arXiv (A&A) arxiv.org/abs/2608.29190
arxiv.org
The Cygnus Allscale Survey of Chemistry and Dynamical Environments: CASCADE: VI. Molecular outflows in the DR21 ridge
Star formation takes place in varied environments, from isolated clumps to massive molecular cloud complexes. However, whether the environment in which a star forms has any effect on the formation…
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Astrochem Coffee @astrochemcoffee.bsky.social · 27/08/2026
Formation of c-C5H7+ and C5H9+ through sequential reactions of C2H5+ with C2H4 Zagorec-Marks et al. JCP pubs.aip.org/aip/jcp/arti...
pubs.aip.org
Formation of c-C5H7+ and C5H9+ through sequential reactions of C2H5+ with C2H4
Polycyclic aromatic hydrocarbons (PAHs) have been the subject of extensive investigation by astrochemists over the past two decades. This interest has been spur
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Astrochem Coffee @astrochemcoffee.bsky.social · 27/08/2026
Nitrogen- and nitrogen-oxygen-bearing organic molecules in comet 67P/Churyumov-Gerasimenko: An untargeted investigation Hänni et al. arXiv arxiv.org/abs/2608.24235
arxiv.org
Nitrogen- and nitrogen-oxygen-bearing organic molecules in comet 67P/Churyumov-Gerasimenko: An untargeted investigation
Comets provide a unique window into the history of the Solar System as they carry some of the best-preserved material and make it available to in situ exploration. A milestone in comet studies was…
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Astrochem Coffee @astrochemcoffee.bsky.social · 27/08/2026
The Highly Unusual Behavior and Chemical Composition of Interstellar Comet 2I/Borisov Bair et al. arXiv (PSJ) arxiv.org/abs/2608.23701
arxiv.org
The Highly Unusual Behavior and Chemical Composition of Interstellar Comet 2I/Borisov
We report on imaging, spectroscopy, and narrowband photometry of interstellar comet 2I/Borisov obtained at Lowell Observatory from 2019 September 13 to December 16. We measured chemical composition…
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Astrochem Coffee @astrochemcoffee.bsky.social · 26/08/2026
Interstellar Aromatic Infrared Bands: IR absorption spectroscopy of the lowest triplet state of naphthalene Paunikar et al. arXiv arxiv.org/abs/2608.24395
arxiv.org
Interstellar Aromatic Infrared Bands: IR absorption spectroscopy of the lowest triplet state of naphthalene
The aromatic infrared bands (AIBs), emission features observed ubiquitously across a wide variety of interstellar objects, are commonly attributed to radiative cooling of highly-excited ground-state…
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Astrochem Coffee @astrochemcoffee.bsky.social · 26/08/2026
Quantifying the temperature-dependent yields of N2 and N2H4 formation in vacuum-ultraviolet-irradiated NH3 ice Samarth et al. A&A www.aanda.org/articles/aa/...
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Astrochem Coffee @astrochemcoffee.bsky.social · 25/08/2026
AstroBind: Machine learning prediction of binding energy distributions on interstellar water ice from geometric surface descriptors Ahmad & Walsh arXiv arxiv.org/abs/2608.22069
arxiv.org
AstroBind: Machine learning prediction of binding energy distributions on interstellar water ice from geometric surface descriptors
Binding energies on amorphous solid water regulate molecular desorption in molecular clouds and protoplanetary disks, but computing them from first principles across the heterogeneous binding sites…
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Astrochem Coffee @astrochemcoffee.bsky.social · 24/08/2026
The curious case of HCO$^+$: Extreme abundances under extreme conditions Dutkowska et al. arXiv (A&A) arxiv.org/abs/2608.21138
arxiv.org
The curious case of HCO$^+$: Extreme abundances under extreme conditions
Context. HCO$^+$ is widely observed in both Galactic and extragalactic environments and typically exhibits abundances of $10^{-9}-10^{-8}$. However, recent modeling studies suggest that in…
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Astrochem Coffee @astrochemcoffee.bsky.social · 24/08/2026
JWST Spatial-Spectral Mapping of Green Comet C/2022 E3 (ZTF) Milam et al. arXiv arxiv.org/abs/2608.20544
arxiv.org
JWST Spatial-Spectral Mapping of Green Comet C/2022 E3 (ZTF)
We report a survey of molecular emission from cometary volatiles using the James Webb Space Telescope (JWST) toward Oort cloud comet C/2022 E3 (ZTF) carried out on UT 2023 February 28 and March 1 at…
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Astrochem Coffee @astrochemcoffee.bsky.social · 24/08/2026
Gas-phase and Surface Chemistry in the Massive Star-Forming Region RCW 120 Plakitina et al. arXiv arxiv.org/abs/2608.21002
arxiv.org
Gas-phase and Surface Chemistry in the Massive Star-Forming Region RCW\,120
We analysed broadband emission spectra of a dense molecular clump in RCW 120, obtained with the APEX telescope in the 200--260 GHz range, in order to investigate molecular formation pathways in…
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Astrochem Coffee @astrochemcoffee.bsky.social · 21/08/2026
Automated Assignment and Prediction of Molecules in Astronomical Line Surveys Using Machine-Learning-Based Chemical Embeddings Fried et al. arXiv (ApJ) arxiv.org/abs/2608.18221
arxiv.org
Automated Assignment and Prediction of Molecules in Astronomical Line Surveys Using Machine-Learning-Based Chemical Embeddings
Modern radio telescopes generate vast amounts of observational data, offering valuable insights into the molecular composition of interstellar sources. Identifying the molecules within these datasets…
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Astrochem Coffee @astrochemcoffee.bsky.social · 20/08/2026
Beyond Idealized PAHs: Infrared Signatures of Carbon-Chain Defects from Shock Synthesis Tan et al. arXiv arxiv.org/abs/2608.18505
arxiv.org
Beyond Idealized PAHs: Infrared Signatures of Carbon-Chain Defects from Shock Synthesis
Polycyclic aromatic hydrocarbons (PAHs) are widely recognized as carriers of the aromatic infrared bands (AIBs). However, most spectral models rely on idealized structures that fail to capture the…
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Astrochem Coffee @astrochemcoffee.bsky.social · 18/08/2026
Infrared Spectroscopy of Cyanonaphthalenes under Interstellar Relevant Conditions and Their Potential Connection with Astronomical Aromatic Infrared Bands Xin et al. arXiv (A&A) arxiv.org/abs/2608.14964
arxiv.org
Infrared Spectroscopy of Cyanonaphthalenes under Interstellar Relevant Conditions and Their Potential Connection with Astronomical Aromatic Infrared Bands
Context. Aromatic infrared bands (AIBs) are widely observed in diverse astrophysical environments and are generally attributed to vibrational emission from polycyclic aromatic hydrocarbons (PAHs).…
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Astrochem Coffee @astrochemcoffee.bsky.social · 13/08/2026
Molecule-specific diffusion and desorption of interstellar ices on carbonaceous dust Chiu et al. arXiv arxiv.org/abs/2608.11729
arxiv.org
Molecule-specific diffusion and desorption of interstellar ices on carbonaceous dust
Interstellar ices form on dust grains in the coldest regions of molecular clouds and preserve key volatile reservoirs that could be incorporated into protoplanetary disks during star and planet…
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Astrochem Coffee @astrochemcoffee.bsky.social · 13/08/2026
Infrared Spectroscopy and Photochemistry of Aromatic Nitriles in Para-Hydrogen Matrices McGrath et al. arXiv (ApJ) arxiv.org/abs/2608.09889
arxiv.org
Infrared Spectroscopy and Photochemistry of Aromatic Nitriles in Para-Hydrogen Matrices
Motivated by recent detections of several aromatic nitriles in Taurus Molecular Cloud-1, we report laboratory and theoretical investigations of the vibrational spectroscopy and photochemistry of…
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