David Sobral 💫

Dreamer, writer, scientist, Extragalactic Astrophysicist

[Jorryt Matthee @jorryt_m]

Paper Day! You may have heard about these "Little Red Dots" in JWST data. Here we use new high quality spectra to show that the their spectral appearance is primarily set by the properties of surrounding gas: LRDs are hot engines covered by dense gas
https://t.co/Jw94oDsrRF

[David Sobral 💫 @dr_sobral]

@sfseiji @Rohan_Naidu @NASAWebb Awesome work, looking forward to know what you find!

[Rohan Naidu @Rohan_Naidu]

Great article on our Pop III paper, co-led with @sfseiji. Thanks for capturing the excitement so well @DanClery https://t.co/bIMxN7UOzn

[David Sobral 💫 @dr_sobral]

J-PLUS: Spectroscopic validation of Hα emission line maps in spatially resolved galaxies, out today ⭐ https://t.co/L4GEmC94VM

[Seiji Fujimoto @sfseiji]

Detecting the first stars (PopIII) is a long-held dream for astronomers. We developed a novel technique, applied it to JWST legacy data, and discovered a promising PopIII galaxy candidate at z=6.5 in GLIMPSE!

[Jorryt Matthee @jorryt_m]

More exciting measurements on the most luminous little red dot that I know of (F444W=22 at z=4.5!): an unambiguous AGN and a Balmer break in deep UNCOVER and ALT spectroscopy

https://t.co/0Fttky98yk

[Jorryt Matthee @jorryt_m]

Yesterday was paper day!

With deep JWST data from the ALT survey we provide new independent evidence that the new population of faint AGNs in the early Universe seems to have so-called overly massive black holes compared to their stellar mass
https://t.co/VZiYfaLnZf

[David Sobral 💫 @dr_sobral]

https://t.co/vQzl91ZTDB very nice to see what JWST and the amazing NIR IFU capabilities revealed on CR7, confirming so many interpretations and measurements that got built step by step first from super limited data, to then ALMA, MUSE and now JWST, and also adding so much more

[Anna-Christina Eilers @christinaeil]

Check out our work using JWST to look at the environment in which ancient supermassive black holes grow. With @jorryt_m @Rohan_Naidu @MinghaoYue and the EIGER team!

[David Sobral 💫 @dr_sobral]

The JWST Emission Line Survey (JELS): An untargeted search for Hα emission line galaxies at z>6 and their physical properties https://t.co/aGeh0T3HHC

[David Sobral 💫 @dr_sobral]

The JWST Emission Line Survey (JELS): Extending rest-optical narrow-band emission line selection into the Epoch of Reionization https://t.co/KRsfNCBF6W

[ALMA Observatory📡 @almaobs]

#BreakingNews Space oddity: Most distant Milky-Way-like galaxy yet observed.

🌀Dubbed REBELS-25, this disc galaxy seems as orderly as present-day galaxies, but we see it as it was when the Universe was only 700 million years old
🔗https://t.co/xid0FPXNoj

[ioana ciucă @errai34]

Loveeee this paper from @Rohan_Naidu and Jorryt Matthee and team!!! Beyond the great science, it has two first authors and has been submitted to the Open Journal of Astrophysics. 🚀💫

The best way forward is action! Hope you don't mind, made you a little podcast with Google Illuminate https://t.co/hIfabuD364.

[Jorryt Matthee @jorryt_m]

Today on the arXiv: All the Little Things in the Abell 2744 field: ~1600 redshifts measured with our Cycle 2 NIRCam grism program, and much, much more, showcasing the discovery space of this instrument
Among these 1600:
1) An analog of the Milky Way + local group 12.7 Gyr ago

[The Conversation @ConversationUK]

The earliest galaxies formed amazingly fast after the Big Bang. Do they break the universe or change its age? https://t.co/lB381miY9v

[David Sobral 💫 @dr_sobral]

@Introspect_Rych @astrojansen @stefanocarniani https://t.co/9brRTMm5xU finally materialising. If we knew where to point ALMA we could have done it years ago

[🇺🇦 Rychard Bouwens #IStandWithUkraine @Introspect_Rych]

Just wanted to quickly advertise a really exciting new result just obtained by ALMA involving the detection (6.6 sigma) of the [OIII]88 line at z=14.1793 put together by an awesome PhD student in Leiden with the name of Sander Schouws. The [OIII]88 line detection was found by

[Max Gaspari @max_gasp]

🌌 Job Opportunity: Postdoc Fellowships in Computational Astrophysics
Join my ERC #BlackHoleWeather project (2M Eur) to study black hole feeding & feedback through cutting-edge HPC simulations and multiwavelength data.

💡 3-year position, extendable to 5+ and potentially becoming tenure-track
💰 Tax-free salary + large travel/equipment funding
📝 Apply by Oct 14!
🔗 Details: https://t.co/XCDWA8DVNQ

[Romain A. Meyer @astro_rameyer]

Are you an ECR? Do you like #JWST ? High-z galaxies/SMBHs? Skiing/curling/ice-skating in the Swiss Alps?

Applications are now open for the 54th Saas-Fee Course on "Galaxies and Black Holes in the 1 Gyr as seen with the JWST" - Jan 27-31, 2025 - more info: https://t.co/NqH5vQ3KR5