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Dino Chih-Chun Hsu

@chihchunhsu.bsky.social
189 followers 230 following 32 posts

Postdoc at Northwestern | PhD UC San Diego | observational astrophysicist studying stars, brown dwarfs, and exoplanets | chihchunhsu.github.io

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Dino Chih-Chun Hsu @chihchunhsu.bsky.social · 29/06/2026
My first presence in Exoplanets conference series featuring our KPIC spin work! #Exo6 #Exoplanets6
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CIERA @nuciera.bsky.social · 07/04/2026
We are proud to announce that William Balmer has been named Northwestern University’s first Heising-Simons Foundation 51 Pegasi b Fellow and a member of the Tenth Class of 51 Pegasi b Fellows! Congratulations William! bit.ly/4e53ePl #Astrophysics #PlanetaryScience
bit.ly
CIERA Announces Northwestern’s First 51 Pegasi b Fellowship Recipient
The Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) is proud to announce that William Balmer (they/them) has been named Northwestern University’s first Heising-Simons Fou...
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Dino Chih-Chun Hsu @chihchunhsu.bsky.social · 27/03/2026
Check out this great work by @maddielam.bsky.social and @johannavos.bsky.social for a deep dive in silicate cloud absorption and inclinations! From L dwarfs in AB Dor, we find an interesting trend that lower inclination correlate with the stronger silicate cloud absorption!
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Dino Chih-Chun Hsu @chihchunhsu.bsky.social · 16/02/2026
I am super excited to share our new paper on the spin of brown dwarfs and giant planets, accepted to AJ earlier this month. With the large spin survey, we found the first clear evidence that the spins of giant planets and brown dwarf companions (>5 au) are distinct. arxiv.org/abs/2601.05976
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Jason Wang @thejason.wang · 19/12/2025
The Fomalhaut system continues to deliver unexpected surprises!
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Dino Chih-Chun Hsu @chihchunhsu.bsky.social · 04/01/2026
I’m attending the #AAS247 this week. Look forward to catching up with friends and colleagues!
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Jason Wang @thejason.wang · 12/12/2025
New orbit movie just dropped. This one is for the newly discovered circumbinary planet HD 143811 AB b. This 9-year timelapse was made through an international collaboration with me, Nathalie Jones (Northwestern graduate student), and Vito Squicciarini (Exeter postdoc)
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Mark Marley @markmarley.bsky.social · 09/12/2025
A remarkable old, low metallicity, transiting brown dwarf. arxiv.org/abs/2512.06069
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Johanna Vos @johannavos.bsky.social · 24/11/2025
We are hiring a new Assistant Professor in Astrophysics at Trinity College Dublin!! ☘ Job ad here: aas.org/jobregister/... Deadline: Jan 02 2026 Please share widely! 🪐🔭
aas.org
Assistant Professor in Astrophysics | American Astronomical Society
The School of Physics at Trinity College Dublin invites applications for a position at the level of Assistant Professor in the field of observational or theoretical astrophysics. We seek motivated ind...
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Josh Lothringer @jlothringer.bsky.social · 31/10/2025
We've collected 65 individual exoplanet atmosphere composition measurements to look for population-level trends 🔭 #exoplanets To do this, we had to create a toolkit to standardize between definitions of . We call it ExoComp. (Yes, that's a Star Trek reference 😀).
A logo with text "ExoComp" with a robot scanning the "O".
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American Astronomical Society (AAS) @aas.org · 22/10/2025
SAVE THE DATE! The 11th AAS Topical Conference Series (AASTCS): Exoplanet Atmospheres 2026 will take place in Denver. Join astronomers, planetary scientists & researchers from around the world for an in-depth exploration of one of the most dynamic fields in science today. More details soon 🔭
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Mark Marley @markmarley.bsky.social · 13/10/2025
Evan has extended our cloudy Diamondback evolution models to higher Teff with PHOENIX models at the high end. This permits all model tracks to start at the same young age. We call this model variation Red Diamondback.
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Matthew Kenworthy @mattkenworthy.bsky.social · 09/09/2025
Two papers announcing the discovery of a directly imaged 6 Jupiter mass planet around binary system HD 143811 AB Squicciarini+ and Jones+ in Sco-Cen - Keck, Gemini and VLT all imaging this companion and confirmed with several years of common proper motion. #astrodon #exoplanet #exosci
Figure from Squicciarini et al. showing three panels with a white dot on a black and blue stippled background, indicating the location of the planet in GPI and SPHERE IRDIS data.&10;Three panel image from Jones et al. showing a white dot on a stippled background. The planet is in the 11 o'clock position in all three images.
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Sarah E Moran @offallingstars.bsky.social · 22/08/2025
A quick advert for the ✨✨✨Official✨✨✨ release of the Virga cloud code (the python version of everyone's favorite EddySed model by @markmarley.bsky.social and Andy Ackerman). arxiv.org/abs/2508.15102
arxiv.org
Condensation Clouds in Substellar Atmospheres with Virga
Here we present an open-source cloud model for substellar atmospheres, called Virga. The Virga-v0 series has already been widely adopted in the literature. It is written in Python and has heritage fro...
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Mark Marley @markmarley.bsky.social · 18/07/2025
I liked Caroline Morley's Exoclimes poster describing our Sonora model set so much that I'm going to hang up a replica in my office.
Image of a poster describing the different Sonora models, including Bobcat, Diamondback, Elf Owl, Flame Skimmer, and Gila monster.
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Jason Wang @thejason.wang · 11/07/2025
The 51 Peg b postdoctoral fellowship is out and Northwestern is one of the possible host institutions. Come join us! More information about the range of planetary astronomy research and other opportunities (like PI of Keck proposals) here: ciera.northwestern.edu/opportunitie....
ciera.northwestern.edu
51 Pegasi b Fellowship at Northwestern
Northwestern University is excited to be a host institution for the Heising-Simons Foundation’s 51 Pegasi b Fellowship. Fellows can collaborate on planetary astronomy research and can benefit from aff...
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CIERA @nuciera.bsky.social · 09/04/2025
We are delighted to announce fourteen postdocs will be joining the CIERA community in fall 2025. Please join us in extending a warm welcome to these fantastic researchers!
ciera.northwestern.edu
Fourteen new postdocs to join CIERA
Welcome New Postdoctoral Researchers! We are delighted to announce fourteen postdocs will be joining the CIERA community in fall 2025. Please join us in extending a warm welcome to these fantastic re...
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Dr Laura Driessen @astrolaura.com · 12/03/2025
Maybe these slow rotating weirdos are binary star systems! Find out more in this @aunz.theconversation.com article by Iris de Ruiter theconversation.com/mysterious-r... 🔭🧪
theconversation.com
Mysterious radio pulses from space have been tracked down – and the source is not what astronomers expected
Recently, astronomers have been puzzled by an unknown type of cosmic radio signal. A new breakthrough has finally traced one of them.
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Brett Morris @brettmorr.is · 24/02/2025
Tired of wondering which atomic lines are in your spectra? You need: *whose line is it anyway?* An interactive tool for identifying atomic spectral lines. 🧪🔭 #stars install: pip install whoseline source: github.com/bmorris3/who...
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Jason Wang @thejason.wang · 18/02/2025
Very excited to share that I was selected as a Sloan Research Fellow! Really thankful to all my mentors, colleagues, collaborators, and my amazing research group. Wouldn't have been possible with all of them!
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Kevin Hardegree-Ullman @kevinkhu.bsky.social · 05/02/2025
Registration is now open for the (free, hybrid) 2025 Sagan Summer Workshop! This (25th!) workshop will be focused on Exoplanet Demographics and our overall picture of exoplanet populations through various detection techniques. 🪐🔭🧪 nexsci.caltech.edu/workshop/2025/
nexsci.caltech.edu
NExScI | 2025 Sagan Workshop
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Jason Wang @thejason.wang · 28/01/2025
Final week to apply for the Code/Astro workshop! Come learn about open-source software development in Python.
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Jason Wang @thejason.wang · 07/01/2025
Excited to share our interdisciplinary work on developing new methods to subtract off the glare of the star to reveal fainter exoplanets. We show in simulation that we can build a full optical model of JWST/NIRCam and generate images of the star to subtract off and reveal faint planets (1/3)
A series of images showing our new algorithm to detect planets compared to a standard KLIP algorithm. The images show that our new method enables a boost in SNR.
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Sarah Blunt, PhD 🇵🇸 @blunt-comma-s.bsky.social · 04/01/2025
Hey bluesky! Do you want to develop your own open-source software in Python? Apply to attend Code/Astro! Website: semaphorep.github.io/codeastro/ Scroll all the way down for the application link. :) Apps are due Feb 1! (1/2)
semaphorep.github.io
Program Description
A Software Engineering Workshop for Astronomy
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Jason Wang @thejason.wang · 04/01/2025
Want to learn how to make your astronomy code open source? The Code/Astro workshop is happening this Aug 4-8th at Northwestern! We typically get a strong demand so we ask those interested to fill out an application by Feb 1st. See Sarah's post below for details.
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Dino Chih-Chun Hsu @chihchunhsu.bsky.social · 24/12/2024
I can validate that working with @philosicist.bsky.social is amazing, and a great opportunity to enjoy sunny San Diego!!
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Dino Chih-Chun Hsu @chihchunhsu.bsky.social · 18/12/2024
Northwestern press and Nature Astronomy research highlights nicely summarize our new paper on a baby planet’s atmosphere news.northwestern.edu/stories/2024... www.nature.com/articles/s41...
news.northwestern.edu
Young exoplanet’s atmosphere unexpectedly differs from its birthplace
New study shows planet formation might be more complicated than previously thought
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Jason Wang @thejason.wang · 13/12/2024
So excited to share the news that Northwestern is joining the GMT consortium! news.northwestern.edu/stories/2024...
news.northwestern.edu
Northwestern joins Giant Magellan Telescope’s international consortium
Faculty will contribute expertise in astrophysics, engineering and artificial intelligence
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Sarah Blunt, PhD 🇵🇸 @blunt-comma-s.bsky.social · 11/12/2024
Hey folks! Just popping in to announce that the full recording of the 2024 Code/Astro workshop is up on youtube. Playlist here: www.youtube.com/playlist?lis... Code/Astro is a week-long software development workshop for astronomers. More info about the workshop here: semaphorep.github.io/codeastro/
youtube.com
Code/Astro 2024 - YouTube
Hello world! This is the full recording of the 2024 Code/Astro workshop. Here are some useful resources: Workshop website: https://semaphorep.github.io/codea...
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Dr. Luisa Rebull @lrebull.bsky.social · 10/12/2024
🔭🧪🎢 Check out this awesome Python Notebook that my NITARP alumni made for making SEDs. There is also a Colab version! github.com/jimmynewland...
github.com
sed-computational-essay/Make_an_SED_for_YSOs_in_IC417_AAS_WM_2025.ipynb at main · jimmynewland/sed-computational-essay
This Google Colab Notebook is in the form of computational essay explaining how to produce spectral energy distribution plots for young stellar objects. - jimmynewland/sed-computational-essay
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Johanna Vos @johannavos.bsky.social · 29/11/2024
There is an exciting PhD position available at @diasdublin.bsky.social in the area of planetary magnetospheres and habitable moons with ESA's JUICE mission 🪐🌑☘️ The deadline is TOMORROW and full details are here: www.dias.ie/phd-position... Please share! 🪐🔭
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Jason Wang @thejason.wang · 26/11/2024
NASA is soliciting additional funded teams to join the Roman Space Telescope Coronagraph Participation Program. Help us demonstrate the technology to image habitable worlds in space! Happy to chat with anyone that's curious about getting involved. nspires.nasaprs.com/external/sol...
nspires.nasaprs.com
NSPIRES - Solicitations Summary
NASA and U.S. Government policies address research and personal misconduct, and provide avenues for reporting potential violations.
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Philip Muirhead @philipmuirhead.bsky.social · 26/11/2024
Check out BU PhD-student @alliemccarthy.bsky.social's paper just accepted to ApJL! JWST spectral light curves of SIMP 0136 show clear pressure-dependence, indicating three variability mechanisms: clouds, hot spots and C chemistry. @johannavos.bsky.social is the JWST PI! arxiv.org/abs/2411.16577
arxiv.org
The JWST Weather Report from the Isolated Exoplanet Analog SIMP 0136+0933: Pressure-Dependent Variability Driven by Multiple Mechanisms
Isolated planetary-mass objects share their mass range with planets but do not orbit a star. They lack the necessary mass to support fusion in their cores and thermally radiate their heat from formati...
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Dino Chih-Chun Hsu @chihchunhsu.bsky.social · 25/11/2024
I am excited to share my third paper of this year, and my first exoplanet paper with @thejason.wang, accepted to ApJL. We detected CO and water in the atmosphere of PDS 70 b, a protoplanet around its natal disk using Keck/KPIC. PDS 70 b shows a stellar-like C/O ratio (!). arxiv.org/abs/2411.15117
arxiv.org
PDS 70b Shows Stellar-like Carbon-to-Oxygen Ratio
The $\sim$5 Myr PDS 70 is the only known system with protoplanets residing in the cavity of the circumstellar disk from which they formed, ideal for studying exoplanet formation and evolution within i...
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John Gizis @johngizis.bsky.social · 18/11/2024
A brown dwarf astronomy starter pack. Let me know if you want to be added. It was @markmarley.bsky.social ‘s idea. 🔭 go.bsky.app/UVjXNLA
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Dino Chih-Chun Hsu @chihchunhsu.bsky.social · 16/11/2024
Hello blue sky! Ready to catch up with friends and colleagues here, and share some my new science in the future 😁
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