Dino Chih-Chun Hsu
@chihchunhsu.bsky.social
Postdoc at Northwestern | PhD UC San Diego | observational astrophysicist studying stars, brown dwarfs, and exoplanets | chihchunhsu.github.io
Pinned
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...
arxiv.org
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
Reposted by Dino Chih-Chun Hsu
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! 🪐🔭
Job ad here: aas.org/jobregister/...
Deadline: Jan 02 2026
Please share widely! 🪐🔭
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...
aas.org
November 24, 2025 at 12:27 PM
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! 🪐🔭
Job ad here: aas.org/jobregister/...
Deadline: Jan 02 2026
Please share widely! 🪐🔭
Reposted by Dino Chih-Chun Hsu
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 😀).
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 😀).
October 31, 2025 at 1:35 PM
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 😀).
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 😀).
Reposted by Dino Chih-Chun Hsu
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 🔭
October 22, 2025 at 2:31 PM
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 🔭
Reposted by Dino Chih-Chun Hsu
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.
Davis, Fortney, Iyer, Mukherjee, Morley, Marley, Line, Muirhead: The Sonora Substellar Atmosphere Models VI. Red Diamondback: Extending Diamondback with SPHINX for Brown Dwarf Early Evolution https://arxiv.org/abs/2510.08694 https://arxiv.org/pdf/2510.08694 https://arxiv.org/html/2510.08694
October 13, 2025 at 2:55 PM
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.
Reposted by Dino Chih-Chun Hsu
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
September 9, 2025 at 9:29 AM
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
Reposted by Dino Chih-Chun Hsu
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/abs/2508.15102
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...
arxiv.org
August 22, 2025 at 6:05 PM
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/abs/2508.15102
Reposted by Dino Chih-Chun Hsu
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.
July 18, 2025 at 9:29 PM
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.
Reposted by Dino Chih-Chun Hsu
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....
July 11, 2025 at 6:36 PM
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....
Reposted by Dino Chih-Chun Hsu
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!
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...
ciera.northwestern.edu
April 9, 2025 at 6:43 PM
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!
Reposted by Dino Chih-Chun Hsu
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... 🔭🧪
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.
theconversation.com
March 12, 2025 at 9:15 PM
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... 🔭🧪
Reposted by Dino Chih-Chun Hsu
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...
*whose line is it anyway?* An interactive tool for identifying atomic spectral lines. 🧪🔭 #stars
install:
pip install whoseline
source:
github.com/bmorris3/who...
February 24, 2025 at 6:11 PM
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...
*whose line is it anyway?* An interactive tool for identifying atomic spectral lines. 🧪🔭 #stars
install:
pip install whoseline
source:
github.com/bmorris3/who...
Reposted by Dino Chih-Chun Hsu
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!
🎉Congrats to the 126 early-career scientists who have been awarded a Sloan Research Fellowship this year! These exceptional scholars are drawn from 51 institutions across the US and Canada, and represent the next generation of groundbreaking researchers. sloan.org/fellowships/...
February 18, 2025 at 7:55 PM
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!
Reposted by Dino Chih-Chun Hsu
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/workshop/2025/
NExScI
|
2025 Sagan Workshop
nexsci.caltech.edu
February 5, 2025 at 3:31 PM
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/workshop/2025/
Reposted by Dino Chih-Chun Hsu
Final week to apply for the Code/Astro workshop! Come learn about open-source software development in Python.
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)
Website: semaphorep.github.io/codeastro/
Scroll all the way down for the application link. :) Apps are due Feb 1! (1/2)
Program Description
A Software Engineering Workshop for Astronomy
semaphorep.github.io
January 28, 2025 at 4:32 PM
Final week to apply for the Code/Astro workshop! Come learn about open-source software development in Python.
Reposted by Dino Chih-Chun Hsu
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)
January 7, 2025 at 4:33 AM
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)
Reposted by Dino Chih-Chun Hsu
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)
Website: semaphorep.github.io/codeastro/
Scroll all the way down for the application link. :) Apps are due Feb 1! (1/2)
Program Description
A Software Engineering Workshop for Astronomy
semaphorep.github.io
January 4, 2025 at 2:22 AM
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)
Website: semaphorep.github.io/codeastro/
Scroll all the way down for the application link. :) Apps are due Feb 1! (1/2)
Reposted by Dino Chih-Chun Hsu
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.
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.
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)
Website: semaphorep.github.io/codeastro/
Scroll all the way down for the application link. :) Apps are due Feb 1! (1/2)
Program Description
A Software Engineering Workshop for Astronomy
semaphorep.github.io
January 4, 2025 at 4:18 AM
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.
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.
I can validate that working with @philosicist.bsky.social is amazing, and a great opportunity to enjoy sunny San Diego!!
Hi everyone, I'm looking to hire a postdoc this upcoming year, so if you're interested in coming to San Diego to work on low-mass stars, brown dwarfs, and exoplanets, please apply!
aas.org/jobregister/...
aas.org/jobregister/...
Postdoctoral Scholar in Low-mass Stars, Brown Dwarfs, and Exoplanets | American Astronomical Society
The Astronomy & Astrophysics Department at the University of California, San Diego invites applications for a postdoctoral scholar to investigate the properties of low-mass stars, brown dwarfs, and ex...
aas.org
December 24, 2024 at 12:16 AM
I can validate that working with @philosicist.bsky.social is amazing, and a great opportunity to enjoy sunny San Diego!!
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/stories/2024...
www.nature.com/articles/s41...
Young exoplanet’s atmosphere unexpectedly differs from its birthplace
New study shows planet formation might be more complicated than previously thought
news.northwestern.edu
December 18, 2024 at 4:51 PM
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/stories/2024...
www.nature.com/articles/s41...
Reposted by Dino Chih-Chun Hsu
So excited to share the news that Northwestern is joining the GMT consortium! news.northwestern.edu/stories/2024...
Northwestern joins Giant Magellan Telescope’s international consortium
Faculty will contribute expertise in astrophysics, engineering and artificial intelligence
news.northwestern.edu
December 13, 2024 at 7:36 PM
So excited to share the news that Northwestern is joining the GMT consortium! news.northwestern.edu/stories/2024...
Reposted by Dino Chih-Chun Hsu
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/
Code/Astro is a week-long software development workshop for astronomers. More info about the workshop here: semaphorep.github.io/codeastro/
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...
www.youtube.com
December 11, 2024 at 8:38 PM
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/
Code/Astro is a week-long software development workshop for astronomers. More info about the workshop here: semaphorep.github.io/codeastro/
Reposted by Dino Chih-Chun Hsu
🔭🧪🎢 Check out this awesome Python Notebook that my NITARP alumni made for making SEDs. There is also a Colab version! github.com/jimmynewland...
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
github.com
December 10, 2024 at 9:51 PM
🔭🧪🎢 Check out this awesome Python Notebook that my NITARP alumni made for making SEDs. There is also a Colab version! github.com/jimmynewland...
Reposted by Dino Chih-Chun Hsu
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! 🪐🔭
The deadline is TOMORROW and full details are here: www.dias.ie/phd-position...
Please share! 🪐🔭
November 29, 2024 at 4:03 PM
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! 🪐🔭
The deadline is TOMORROW and full details are here: www.dias.ie/phd-position...
Please share! 🪐🔭
Reposted by Dino Chih-Chun Hsu
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 - Solicitations Summary
NASA and U.S. Government policies address research and personal misconduct, and provide avenues for reporting potential violations.
nspires.nasaprs.com
November 26, 2024 at 10:16 PM
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...
Reposted by Dino Chih-Chun Hsu
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
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...
arxiv.org
November 26, 2024 at 3:07 PM
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