Evert Nasedkin
@evertnasedkin.bsky.social
Pinned
Evert Nasedkin
@evertnasedkin.bsky.social
· Sep 26
🔭 It's paper day! Today I'm sharing the latest in a series of papers looking at the weather on other worlds, in this case bringing you the weather report from a nearby T-dwarf, SIMP-0136. 🪐
🧵 to follow...
🧵 to follow...
Reposted by Evert Nasedkin
Lammers and Winn “On the Exoplanet Yield of Gaia Astrometry” makes breathtaking predictions for the Gaia DR4 data release in December 2026 - around 7500 new exoplanets around nearby stars! It will be revolutionary… and indicate new nearby systems to be imaged… #astrodon #exoplanets ☄️
November 7, 2025 at 8:34 AM
Lammers and Winn “On the Exoplanet Yield of Gaia Astrometry” makes breathtaking predictions for the Gaia DR4 data release in December 2026 - around 7500 new exoplanets around nearby stars! It will be revolutionary… and indicate new nearby systems to be imaged… #astrodon #exoplanets ☄️
Reposted by Evert Nasedkin
Hey, astronomers. Can you imagine astronomy research without ADS?!?!? No? So, have you filled out the ADS survey yet?
Help archives help you!
(Help archives keep funding!)
docs.google.com/forms/d/e/1F...
Help archives help you!
(Help archives keep funding!)
docs.google.com/forms/d/e/1F...
Astrophysics Data System (ADS) User Feedback Survey
Thank you for taking the time to provide feedback on the Astrophysics Data System (ADS) digital library. Your insights will help us improve the platform and better serve the scientific community. All ...
docs.google.com
November 5, 2025 at 7:21 PM
Hey, astronomers. Can you imagine astronomy research without ADS?!?!? No? So, have you filled out the ADS survey yet?
Help archives help you!
(Help archives keep funding!)
docs.google.com/forms/d/e/1F...
Help archives help you!
(Help archives keep funding!)
docs.google.com/forms/d/e/1F...
Reposted by Evert Nasedkin
Absolutely floored to have received an award for "open and inclusive" #scicomm and outreach. I'm not usually one to broadcast such things, but I think highlighting this type of work is more important than ever. Please consider getting involved in your own communities! 🔭🧪
www.uu.se/institution/...
www.uu.se/institution/...
October 31, 2025 at 11:18 AM
Absolutely floored to have received an award for "open and inclusive" #scicomm and outreach. I'm not usually one to broadcast such things, but I think highlighting this type of work is more important than ever. Please consider getting involved in your own communities! 🔭🧪
www.uu.se/institution/...
www.uu.se/institution/...
Super useful stuff from @jlothringer.bsky.social! Now that we're starting to measure compositions with decent precision it's important to worry about what we mean by 'solar' or 'metallicity', and make sure that we're comparing apples to apples!
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 2:55 PM
Super useful stuff from @jlothringer.bsky.social! Now that we're starting to measure compositions with decent precision it's important to worry about what we mean by 'solar' or 'metallicity', and make sure that we're comparing apples to apples!
Exciting opportunity for anyone looking to start a PhD! I can only give the highest praise to @paulmolliere.bsky.social as a supervisor! 🔭
Seeking PhD candidates that want to do a thesis on exoplanet atmosphere retrieval + machine learning inference. Please apply by 31 October to Dr. Max Dax's and my shared project here: is.mpg.de/news/new-max... . Abstract for the thesis project is attached to this thread below!
New Max Planck Artificial Intelligence Network Starts Call for Applications for its Ph.D. Program
The Max Planck Artificial Intelligence Network is a Ph.D. Program that provides doctoral researchers with fully funded Ph.D. fellowships and a pool of outstanding faculty comprising directors and inde...
is.mpg.de
October 17, 2025 at 12:49 PM
Exciting opportunity for anyone looking to start a PhD! I can only give the highest praise to @paulmolliere.bsky.social as a supervisor! 🔭
Reposted by Evert Nasedkin
Books Upstairs is a fine store with a particularly excellent poetry section. Why not support them by ordering your books online instead: booksupstairs.ie
‘Really shocking’: Independent Dublin bookstore damaged in arson attack
‘Really shocking’: Independent Dublin bookstore damaged in arson attack
Books Upstairs manager hopes to partially open the D’Olier Street store later on Monday
www.irishtimes.com
October 6, 2025 at 11:36 AM
Books Upstairs is a fine store with a particularly excellent poetry section. Why not support them by ordering your books online instead: booksupstairs.ie
Reposted by Evert Nasedkin
I wrote another paper! And yes it's about brown dwarfs wait don't go anywhere they're really neat
arxiv.org/abs/2510.00111
arxiv.org/abs/2510.00111
JADES: An Abundance of Ultra-Distant T- and Y-Dwarfs in Deep Extragalactic Data
Ultra-cool T- (T$_{\mathrm{eff}} \approx$ 500 - 1200 K) and Y-dwarfs (T$_{\mathrm{eff}}$ $\lessapprox 500$ K) have historically been found only a few hundred parsecs from the Sun. The sensitivity and ...
arxiv.org
October 2, 2025 at 2:59 AM
I wrote another paper! And yes it's about brown dwarfs wait don't go anywhere they're really neat
arxiv.org/abs/2510.00111
arxiv.org/abs/2510.00111
Reposted by Evert Nasedkin
The Norman Lockyer Fellowship is a great opportunity for postdoc research in #Exoplanets, and we'd love to host you at St Andrews!
Feel free to reach out if you're interested in joining our exoplanet group in beautiful Scotland 🏴🪐
Feel free to reach out if you're interested in joining our exoplanet group in beautiful Scotland 🏴🪐
🧑🔬 Need funding to support your research?🧑🔬
We're now accepting applications for the Norman Lockyer Fellowship, offered to outstanding candidates to enable them to pursue research in the UK in the disciplines advanced by the Royal Astronomical Society. 🔭🪐
⤵️
We're now accepting applications for the Norman Lockyer Fellowship, offered to outstanding candidates to enable them to pursue research in the UK in the disciplines advanced by the Royal Astronomical Society. 🔭🪐
⤵️
October 3, 2025 at 11:47 AM
The Norman Lockyer Fellowship is a great opportunity for postdoc research in #Exoplanets, and we'd love to host you at St Andrews!
Feel free to reach out if you're interested in joining our exoplanet group in beautiful Scotland 🏴🪐
Feel free to reach out if you're interested in joining our exoplanet group in beautiful Scotland 🏴🪐
Reposted by Evert Nasedkin
I’m thrilled to announce a new paper that went up on the arXiv last night: arxiv.org/abs/2510.02260! The paper finds and maps the connections between clouds, temperature structure, and chemistry in the isolate exoplanet analog SIMP 0136. Very grateful to all my collaborators and co-authors!
Mapping the Cloud-Driven Atmospheric Dynamics & Chemistry of an Isolated Exoplanet Analog with Harmonic Signatures
Young planetary-mass objects and brown dwarfs near the L/T spectral transition exhibit enhanced spectrophotometric variability over field brown dwarfs. Patchy clouds, auroral processes, stratospheric ...
arxiv.org
October 3, 2025 at 12:33 PM
I’m thrilled to announce a new paper that went up on the arXiv last night: arxiv.org/abs/2510.02260! The paper finds and maps the connections between clouds, temperature structure, and chemistry in the isolate exoplanet analog SIMP 0136. Very grateful to all my collaborators and co-authors!
Great article in @discovermag.bsky.social about our work on SIMP-0136!
New JWST Data Shows Rogue Planet With a Colorful Combo of Wavelengths, Strong Storms, and Beautiful Auroras www.discovermagazine.com/new-jwst-dat...
New JWST Data Shows Rogue Planet With a Colorful Combo of Wavelengths, Strong Storms, and Beautiful Auroras
Learn about SIMP-0136, a rogue planet emitting wavelengths that reveal patchy clouds and auroras similar to the Northern Lights.
www.discovermagazine.com
September 28, 2025 at 8:48 AM
Great article in @discovermag.bsky.social about our work on SIMP-0136!
Reposted by Evert Nasedkin
I'm really excited about this one! It's fantastic working with Dr. Yayaati Chachan:
arxiv.org/abs/2509.20428
"Revising the Giant Planet Mass-Metallicity Relation: Deciphering the Formation Sequence of Giant Planets"
Lots of great nuggets her, including that even super-Jupiters are very metal-rich.
arxiv.org/abs/2509.20428
"Revising the Giant Planet Mass-Metallicity Relation: Deciphering the Formation Sequence of Giant Planets"
Lots of great nuggets her, including that even super-Jupiters are very metal-rich.
Revising the Giant Planet Mass-Metallicity Relation: Deciphering the Formation Sequence of Giant Planets
The rate at which giant planets accumulate solids and gas is a critical component of planet formation models, yet it is extremely challenging to predict from first principles. Characterizing the heavy...
arxiv.org
September 26, 2025 at 4:25 AM
I'm really excited about this one! It's fantastic working with Dr. Yayaati Chachan:
arxiv.org/abs/2509.20428
"Revising the Giant Planet Mass-Metallicity Relation: Deciphering the Formation Sequence of Giant Planets"
Lots of great nuggets her, including that even super-Jupiters are very metal-rich.
arxiv.org/abs/2509.20428
"Revising the Giant Planet Mass-Metallicity Relation: Deciphering the Formation Sequence of Giant Planets"
Lots of great nuggets her, including that even super-Jupiters are very metal-rich.
🔭 It's paper day! Today I'm sharing the latest in a series of papers looking at the weather on other worlds, in this case bringing you the weather report from a nearby T-dwarf, SIMP-0136. 🪐
🧵 to follow...
🧵 to follow...
September 26, 2025 at 9:05 AM
🔭 It's paper day! Today I'm sharing the latest in a series of papers looking at the weather on other worlds, in this case bringing you the weather report from a nearby T-dwarf, SIMP-0136. 🪐
🧵 to follow...
🧵 to follow...
Reposted by Evert Nasedkin
*So* excited about our pre-print on TSD: Transmission Spectroscopy Decomposition, a novel algorithm that basically delivers your nIR high res #exoplanet 's transmission spectrum without PCA/SYSREM. There might be a 🧵 later, so for now, I'll let this speak for itself... ⬇️
arxiv.org/abs/2509.12737 🧪🔭
arxiv.org/abs/2509.12737 🧪🔭
September 17, 2025 at 8:58 AM
*So* excited about our pre-print on TSD: Transmission Spectroscopy Decomposition, a novel algorithm that basically delivers your nIR high res #exoplanet 's transmission spectrum without PCA/SYSREM. There might be a 🧵 later, so for now, I'll let this speak for itself... ⬇️
arxiv.org/abs/2509.12737 🧪🔭
arxiv.org/abs/2509.12737 🧪🔭
Reposted by Evert Nasedkin
We have job opportunities in the APEx department at MPIA - please spread the word!
Postdocs: aas.org/jobregister/...
Tenure-track staff: aas.org/jobregister/...
Max Planck Research Group Leaders: aas.org/jobregister/...
+ happy to host ERC, Humboldt, and other third-party funds.
Postdocs: aas.org/jobregister/...
Tenure-track staff: aas.org/jobregister/...
Max Planck Research Group Leaders: aas.org/jobregister/...
+ happy to host ERC, Humboldt, and other third-party funds.
September 15, 2025 at 9:32 AM
We have job opportunities in the APEx department at MPIA - please spread the word!
Postdocs: aas.org/jobregister/...
Tenure-track staff: aas.org/jobregister/...
Max Planck Research Group Leaders: aas.org/jobregister/...
+ happy to host ERC, Humboldt, and other third-party funds.
Postdocs: aas.org/jobregister/...
Tenure-track staff: aas.org/jobregister/...
Max Planck Research Group Leaders: aas.org/jobregister/...
+ happy to host ERC, Humboldt, and other third-party funds.
Reposted by Evert Nasedkin
✨✨✨Another Virga advert✨✨✨
Introducing V2.0, with fractal aggregate clouds! Restricted to spheres no more! We handle the dynamics and the optics self consistently.
Led by me and PhD candidate extraordinaire Matt Lodge (who is looking for a postdoc 👀 and is amazing).
arxiv.org/abs/2509.06708
Introducing V2.0, with fractal aggregate clouds! Restricted to spheres no more! We handle the dynamics and the optics self consistently.
Led by me and PhD candidate extraordinaire Matt Lodge (who is looking for a postdoc 👀 and is amazing).
arxiv.org/abs/2509.06708
Fractal Aggregate Aerosols in the Virga Cloud Code I: Model Description and Application to a Benchmark Cloudy Exoplanet
We introduce new functionality to treat fractal aggregate aerosol particles within the Virga cloud modeling framework. Previously, the open source cloud modeling code Virga (Batalha et al. 2025), the ...
arxiv.org
September 9, 2025 at 11:27 AM
✨✨✨Another Virga advert✨✨✨
Introducing V2.0, with fractal aggregate clouds! Restricted to spheres no more! We handle the dynamics and the optics self consistently.
Led by me and PhD candidate extraordinaire Matt Lodge (who is looking for a postdoc 👀 and is amazing).
arxiv.org/abs/2509.06708
Introducing V2.0, with fractal aggregate clouds! Restricted to spheres no more! We handle the dynamics and the optics self consistently.
Led by me and PhD candidate extraordinaire Matt Lodge (who is looking for a postdoc 👀 and is amazing).
arxiv.org/abs/2509.06708
Reposted by Evert Nasedkin
For the last two years, I've been paying for the Astronomy feeds hosting myself.
It has been a privilege to grow our community here, but I also shouldn't keep doing it for free 😅
That's why I'm delighted to announce that we now have a donations page on Open Collective! 🔭☄️ #astrophotography
It has been a privilege to grow our community here, but I also shouldn't keep doing it for free 😅
That's why I'm delighted to announce that we now have a donations page on Open Collective! 🔭☄️ #astrophotography
The Astrosky Ecosystem - Open Collective
We're building an open-source ecosystem of social media tools for the space science & astronomy communities.
opencollective.com
September 8, 2025 at 3:51 PM
For the last two years, I've been paying for the Astronomy feeds hosting myself.
It has been a privilege to grow our community here, but I also shouldn't keep doing it for free 😅
That's why I'm delighted to announce that we now have a donations page on Open Collective! 🔭☄️ #astrophotography
It has been a privilege to grow our community here, but I also shouldn't keep doing it for free 😅
That's why I'm delighted to announce that we now have a donations page on Open Collective! 🔭☄️ #astrophotography
Reposted by Evert Nasedkin
A very hungry planet! 🪐
What appears to be a ripple in space is actually a newborn planet, eating its way through its dusty cradle around a younger version of our Sun 🌞
Read more: https://www.eso.org/public/images/potw2534a/
🔭 🧪 #exoplanets
📷 ESO/R. van Capelleveen et al.
What appears to be a ripple in space is actually a newborn planet, eating its way through its dusty cradle around a younger version of our Sun 🌞
Read more: https://www.eso.org/public/images/potw2534a/
🔭 🧪 #exoplanets
📷 ESO/R. van Capelleveen et al.
August 26, 2025 at 10:02 AM
A very hungry planet! 🪐
What appears to be a ripple in space is actually a newborn planet, eating its way through its dusty cradle around a younger version of our Sun 🌞
Read more: https://www.eso.org/public/images/potw2534a/
🔭 🧪 #exoplanets
📷 ESO/R. van Capelleveen et al.
What appears to be a ripple in space is actually a newborn planet, eating its way through its dusty cradle around a younger version of our Sun 🌞
Read more: https://www.eso.org/public/images/potw2534a/
🔭 🧪 #exoplanets
📷 ESO/R. van Capelleveen et al.
Reposted by Evert Nasedkin
⭐️⭐️⭐️⭐️⭐️
Legendary quote by @whysharksmatter.bsky.social. No additional comment necessary.
arstechnica.com/science/2025...
Legendary quote by @whysharksmatter.bsky.social. No additional comment necessary.
arstechnica.com/science/2025...
August 27, 2025 at 7:17 PM
⭐️⭐️⭐️⭐️⭐️
Legendary quote by @whysharksmatter.bsky.social. No additional comment necessary.
arstechnica.com/science/2025...
Legendary quote by @whysharksmatter.bsky.social. No additional comment necessary.
arstechnica.com/science/2025...
Reposted by Evert Nasedkin
Proud supervisor moment: #LeidenObservatory graduate student Richelle van Capelleveen led one of two papers on our discovery of WISPIT 2b, a 5 Jupiter mass exoplanet clearing a path in a circumstellar disk. Laird Close and his team saw it in H-alpha, indicating gas accretion #astrodon 🔭 🧪
August 26, 2025 at 11:51 AM
Proud supervisor moment: #LeidenObservatory graduate student Richelle van Capelleveen led one of two papers on our discovery of WISPIT 2b, a 5 Jupiter mass exoplanet clearing a path in a circumstellar disk. Laird Close and his team saw it in H-alpha, indicating gas accretion #astrodon 🔭 🧪
Reposted by Evert Nasedkin
I think it's really worth noting that this concentration camp was opened one month and three days ago.
This woman saw enough horror in that time to quit and tell the public what she saw.
Which suggests that it's not as bad as we think, or as bad as we can envision from her description—it's worse.
This woman saw enough horror in that time to quit and tell the public what she saw.
Which suggests that it's not as bad as we think, or as bad as we can envision from her description—it's worse.
A former “Alligator Alcatraz” worker says detainees are subject to “inhumane” conditions — packed by the hundreds into cages without sunlight, with overflowing toilets and limited access to showers.
Former 'Alligator Alcatraz' worker describes 'inhumane' conditions inside
In an exclusive report, NBC6 spoke with a former corrections officer who says she saw hundreds held in cages with no sunlight, backed up toilets and little access to showers.
nbcnews.to
August 6, 2025 at 4:10 PM
I think it's really worth noting that this concentration camp was opened one month and three days ago.
This woman saw enough horror in that time to quit and tell the public what she saw.
Which suggests that it's not as bad as we think, or as bad as we can envision from her description—it's worse.
This woman saw enough horror in that time to quit and tell the public what she saw.
Which suggests that it's not as bad as we think, or as bad as we can envision from her description—it's worse.
Reposted by Evert Nasedkin
I've had a few other former astronomers reach out to me lately about transitioning into data science/ML, and I decided to write about it.
This is my personal journey from astro to ocean, and the most useful steps I took along the way.
This is my personal journey from astro to ocean, and the most useful steps I took along the way.
out of academia
Out of Academia
www.annagwenhughes.com
July 30, 2025 at 4:18 AM
I've had a few other former astronomers reach out to me lately about transitioning into data science/ML, and I decided to write about it.
This is my personal journey from astro to ocean, and the most useful steps I took along the way.
This is my personal journey from astro to ocean, and the most useful steps I took along the way.
Reposted by Evert Nasedkin
Our paper on PSO J318 is finally out 💪 . I want to thank all of my coauthors who made this study possible 🙇 !! It could be that we see the first cloud seeding nuclei forming at the top of the atmosphere…?
arxiv.org/abs/2507.18691
arxiv.org/abs/2507.18691
July 28, 2025 at 5:31 AM
Our paper on PSO J318 is finally out 💪 . I want to thank all of my coauthors who made this study possible 🙇 !! It could be that we see the first cloud seeding nuclei forming at the top of the atmosphere…?
arxiv.org/abs/2507.18691
arxiv.org/abs/2507.18691
Reposted by Evert Nasedkin
gorgeous new JWST spectrum of the rogue planet PSO J318 from @paulmolliere.bsky.social ! Strong absorption at 10 microns likely due to small SiO particles, acting as seeds for cloud formation arxiv.org/pdf/2507.18691
July 28, 2025 at 11:43 AM
gorgeous new JWST spectrum of the rogue planet PSO J318 from @paulmolliere.bsky.social ! Strong absorption at 10 microns likely due to small SiO particles, acting as seeds for cloud formation arxiv.org/pdf/2507.18691
Reposted by Evert Nasedkin
Happy to share the first paper from the SPACE Program, led by my student Angelique Kahle! she observed a hot little sub-Neptune, HD 86226c (Rp = 2.3 Re; equilibrium temp = 1300 K). arxiv.org/pdf/2507.13439
The spectrum is *really* flat ! here's the amplitude compared to other gaseous planets.
The spectrum is *really* flat ! here's the amplitude compared to other gaseous planets.
July 21, 2025 at 11:26 AM
Happy to share the first paper from the SPACE Program, led by my student Angelique Kahle! she observed a hot little sub-Neptune, HD 86226c (Rp = 2.3 Re; equilibrium temp = 1300 K). arxiv.org/pdf/2507.13439
The spectrum is *really* flat ! here's the amplitude compared to other gaseous planets.
The spectrum is *really* flat ! here's the amplitude compared to other gaseous planets.
Reposted by Evert Nasedkin
Congratulations to Dr. Allison McCarthy, who successfully defended her PhD “The Physical Basis for L and T Dwarf Variability” on Friday! Allie is now off to Trinity College Dublin for a postdoc with the ExoAimsir group led by Prof. Johanna Vos! 🪐🔭 @alliemccarthy.bsky.social @johannavos.bsky.social
July 20, 2025 at 11:09 AM
Congratulations to Dr. Allison McCarthy, who successfully defended her PhD “The Physical Basis for L and T Dwarf Variability” on Friday! Allie is now off to Trinity College Dublin for a postdoc with the ExoAimsir group led by Prof. Johanna Vos! 🪐🔭 @alliemccarthy.bsky.social @johannavos.bsky.social