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Sydney Vach

@sydneyvach.bsky.social
286 followers 209 following 19 posts

she/her phd student studying planets young enough to be claimed as dependents | eso & unisq, prev harvard cfa sydvach.github.io

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Reposted by Sydney Vach
George Zhou @georgezhouastro.bsky.social · 04/07/2025
UniSQ PhD student Emma Nabbie has a cool paper about a Kepler system showing more than 24 hr of TTVs! They show that the system can be explained by a mutually inclined (15deg) non transiting interior planet at 2:1 resonance! See paper! www.nature.com/articles/s41...
nature.com
A high mutual inclination system around KOI-134 revealed by transit timing variations - Nature Astronomy
Using Kepler, this study identifies a compact multiplanetary system that is not flat, where gravitational interactions cause its planets’ periods to change by nearly a day per cycle and their orbital ...
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Sydney Vach @sydneyvach.bsky.social · 11/03/2025
dear jwst, can u please update the cycle 4 go website? ur australian fans would like to be able to sleep. cheers, an 0/5 first time jwst proposer
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Yan Matusevich @ymatusik.bsky.social · 07/03/2025
Just got an email from the Fulbright Association. As of right now, funding has been cut off to 12,500 US citizens currently abroad and and more than 7,400 foreigner scholars and students in the United States
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Sarah Tuttle @niais.cryptoanarchy.network · 08/03/2025
Well, this is horrifying
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Kate Starbird @katestarbird.bsky.social · 03/03/2025
As a former athlete & current researcher of online rumors & disinfo, today's atrocious example of the "right wing bullshit machine" in action — anchored on a truly idiotic claim from a football coach turned GOP senator about trans girls making girls sports "extinct" — enrages along both dimensions.
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Dr. Sarah Fortner @erthsarah.bsky.social · 02/03/2025
Here are the three goals of the March 7th #standupforscience as information is altered & removed, funding changed in ways that penalize scientists, & needed expansion in participation replaced with opportunities for less.
Secure & expand funding, end censorship & interference, defend diversity, equity, inclusion & accessibility in science
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Veronica McDonald @veronicamcdonald.bsky.social · 01/03/2025
I saw a reel where it was stitched and this White Gen X guy asked why were Black GenXers so angry and the Black woman said "Because we grew up with you and thought you were different but you turned into your parents." A word.
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Kelsey Johnson @profkelsey.bsky.social · 28/02/2025
I don’t want to see anyone in a store parking lot tomorrow. (With the only exception of small businesses).
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gaia memes for parallax < 0.01 as connoisseurs @gaiamemes.bsky.social · 27/01/2025
the astro community posting their research here on bluesky is kinda like hanging assignments you are proud of on the fridge but virtual
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Catherine 🌌 @catieslaughts.bsky.social · 25/02/2025
I've not been called a DEl hire/admit (directly or indirectly) many times in my life, but when I have been, it has more often than not been by one or both of my parents
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Catherine 🌌 @catieslaughts.bsky.social · 25/02/2025
"Of course you got [achievement]. There are so few women in physics" but when l express frustration about how there are so few women in physics it’s a “victim complex”
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Christian Odendahl @codendahl.bsky.social · 23/02/2025
The young vote in Germany, by gender. 😳
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Denise Wheeler @denisedwheeler.bsky.social · 19/02/2025
Just a reminder that the German courts have ordered Musk to hand over X data pertaining to the most recent German elections in regards to election interference specifically. This needs to be covered more than it is. It's a huge red flag.
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Bibiana Prinoth @bibianaprinoth.ch · 18/02/2025
Seidel+ 2025 and Prinoth+ 2025 are now out in the world 🪐🔭 www.eso.org/public/unite...
eso.org
“Out of science fiction”: First 3D observations of an exoplanet’s atmosphere reveal a unique climate
Astronomers have peered through the atmosphere of a planet beyond the Solar System, mapping its 3D structure for the first time. By combining all four telescope units of the European Southern Observat...
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Reposted by Sydney Vach
Emily Hunt @emily.space · 17/02/2025
The best dark sky in the world - the Atacama Desert in Chile, which hosts many @eso.org telescopes - is under threat from an industrial project. 🔭 Astronomers can sign a petition in favour of moving the planned industrial project: docs.google.com/forms/d/e/1F...
eso.org
World's darkest and clearest skies at risk from industrial megaproject
On December 24th, AES Andes, a subsidiary of the US power company AES Corporation, submitted a project for a massive industrial complex for environmental impact assessment. This complex threatens the pristine skies above ESO’s Paranal Observatory in Chile’s Atacama Desert, the darkest and clearest of any astronomical observatory in the world [1]. The industrial megaproject is planned to be located just 5 to 11 kilometres from telescopes at Paranal, which would cause irreparable damage to astronomical observations, in particular due to light pollution emitted throughout the project’s operational life. Relocating the complex would save one of Earth's last truly pristine dark skies.
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Reposted by Sydney Vach
Katie Langin @klangin.bsky.social · 14/02/2025
Dear federal scientists: If you have been affected by the probationary firings and would be willing to speak with Science, please reach out to me by email (klangin@aaas.org) or on Signal. We can guarantee annonymity.
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Dr. Jessie Christiansen @aussiastronomer.bsky.social · 12/02/2025
xkcd.com/927/
XKCD's "Standards" comic from https://xkcd.com/927/
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Sabina Sagynbayeva @sabinastro.bsky.social · 12/02/2025
We have to find a better stellar IDs naming system!! All my days are now just cross-matching APOGEE to Gaia to KIC to TIC to…
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Reposted by Sydney Vach
Dr. Jessie Christiansen @aussiastronomer.bsky.social · 11/02/2025
Hey, women in science roll call! We’re not invisible and we can’t be erased. RT if you’re a woman in science!
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Chanda Prescod-Weinstein 🌌 @chanda.blacksky.app · 10/02/2025
ACTION OPPORTUNITY: Concerned about loss of public services and attacks on federal employees? @socialists.nyc have helpfully created an easy way for you to tell your congressional rep that you want them to stand up for public services and civil servants! 🧪
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Ashley Kuckelman @ashleyvotesblue.bsky.social · 08/02/2025
🎯🎯🎯
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Ward Howard @wardhoward.bsky.social · 07/02/2025
#KnowThyStar2 James Rogers shows that the Early eVolution Explorer (EVE) will confirm whether planets form water rich or water poor @mmacgreg.bsky.social
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Ward Howard @wardhoward.bsky.social · 05/02/2025
Please make a similar statement @aas.org
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Benjamin Pope @benjaminpope.bsky.social · 07/02/2025
I'm looking for a two year postdoc to work with me at Macquarie University building an Astrostatistics Research Group! We're interested in diverse applicants with previous experience in applying stats/AI/ML in astronomy, especially in relation to exoplanets/stellar astrophysics/instrumentation.
linkedin.com
Macquarie University hiring Postdoctoral Research Associate in North Ryde, New South Wales, Australia | LinkedIn
Posted 2:06:48 AM. PRIMARY DETAIL Salary Circa $106,089 to $113,697 + 17% superannuationNorth Ryde location; Hybrid, 2…See this and similar jobs on LinkedIn.
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arXiv bot (astro-ph) @krxiv-astro-ph.bsky.social · 04/02/2025
A 16 Myr super-Neptune in Upper-Centaurus Lupus and a preliminary survey of transiting planets in Sco-Cen with TESS arxiv.org/pdf/2502.00576 Sydney Vach et al
arxiv.org
https://arxiv.org/abs/2502.00576
arXiv abstract link
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Exoplanet Courier @exocourier.bsky.social · 05/02/2025
[2502.00576] Sydney Vach et al.: A 16 Myr super-Neptune in Upper-Centaurus Lupus and a preliminary survey of transiting planets in Sco-Cen with TESS. link
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Ward Howard @wardhoward.bsky.social · 06/02/2025
#KnowThyStar2 shoutout to TIDYE-1 discovery by @madysonbarber.bsky.social @amann.bsky.social in Adam Kraus’ talk!
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Sydney Vach @sydneyvach.bsky.social · 06/02/2025
The legacy of Sco-Cen keeps growing with another super-Neptune (5 Rearth) orbiting the 16 Myr star TIC 88785435 located in UCL! Check out the paper now on arxiv! 🪐🔭✨ arxiv.org/pdf/2502.00576
arxiv.org
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George Zhou @georgezhouastro.bsky.social · 20/01/2025
Come join the exoplanets team at UniSQ in Australia. Our team is seeking multiple PhD positions to understand the formation and evolution of planetary systems, involving ongoing programs on JWST, HST, and VLT. See AAS advert. Applications before March 07. aas.org/jobregister/...
aas.org
PhD Positions in Exoplanet Atmospheres and Demographics | American Astronomical Society
The Exoplanet group at University of Southern Queensland is inviting candidates for two fully funded PhD scholarships (3 years). Successful candidate will work with Dr George Zhou and Dr Chelsea Huang...
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Sydney Vach @sydneyvach.bsky.social · 30/07/2024
check out our new ~60 Myr multiplanet system, TIC 434398831, in the Theia 116 comoving population!! arxiv.org/pdf/2407.19680
arxiv.org
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George Zhou @georgezhouastro.bsky.social · 30/07/2024
The planets around TIC434398831 were identified by Sydney's independent planet search around pre-main sequence stars from TESS. With follow-up thanks to CHEOPS and many ground-based collaborators.
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George Zhou @georgezhouastro.bsky.social · 30/07/2024
Excited about @sydneyvach.bsky.social 's discovery of a 60 million year old planet system in the Theia 116 association. arxiv.org/pdf/2407.19680
arxiv.org
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Andrew Mann @amann.bsky.social · 09/07/2024
New results from Madyson Barber's TI-DYE survey (successor to THYME/ZEIT): arxiv.org/abs/2407.04763 Summary: the youngest transiting 'hot Jupiter' has a friend at twice the orbital period. 🧪🔭🪐🌌⭐🎉😍
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Ryan White @astroryan.bsky.social · 20/06/2024
I was also inspired by @clairelamman.bsky.social and @sydneyvach.bsky.social to make an 'accessible' version of the paper so that you can read it in a hurry or if you're not familiar with the background! 🔭 You can access it here: ryanwhite1.github.io/time-dilatio... 3/4
Our annotated version of the first page of the paper, showing some drawings and plain language text overlaid onto the paper text.One of the drawings (by me!) on the annotated paper showing a white dwarf star stealing star stuff from a neighbouring star.Another couple of drawings from the paper, showing that you need a lot of funding to build a really big telescope.
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Bibiana Prinoth @bibianaprinoth.ch · 18/06/2024
My paper got accepted last night 🫶 expect a thread after #exoplanets5 😊
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Sydney Vach @sydneyvach.bsky.social · 16/03/2024
If you’re at #ExSSV come check out my poster on young planet occurrence rates with TESS!! (607.02) 🔭🪐
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Astrobiology @astrobiology.bsky.social · 07/03/2024
The Occurrence Of Small, Short-period Planets Younger Than 200 Myr With TESS astrobiology.com/2024/03/the-... #astrobiology #exoplanet #TESS #astronomy
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CosmicRami 🏳️‍🌈🏳️‍⚧️ @rami.spaceaustralia.com · 07/03/2024
This is such a neat #SciComm concept! 'Doodle my paper' allows authors a very accessible, easy-flow language method of communicating their science papers with wider audiences. Sydney's new paper is rad, and seeing it in this format is so fresh! Everyone should doodle their papers! 🔭🧪
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Sydney Vach @sydneyvach.bsky.social · 07/03/2024
shoutout to my cat, who decided to walk across my laptop keys at 4:59:59 am (Brisbane time) this morning as I was submitting to arXiv.... decided to take the 20 seconds to correct "accepted to AJ alboivjwaolsjikdhgn" so now I'm 9th on the astro-ph.EP page.
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George Zhou @georgezhouastro.bsky.social · 07/03/2024
Highlighting new paper by UniSQ PhD student Sydney Vach! She computed the occurrence rate of planets <200 Myr with TESS. arxiv.org/abs/2403.03261
Planet radius frequency for young planets
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Sydney Vach @sydneyvach.bsky.social · 07/03/2024
My first PhD paper on "The occurrence of small, short-period planets younger than 200 Myr with TESS" has been accepted to AJ and is now available on arXiv! I'll also be presenting a poster on the paper at #ExSSV (607.02)! arxiv.org/abs/2403.03261
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