@juliengirard.space
astronomer, scientist and coronagraphist at STScI, exoplanet portraitist, extreme turophile, father, grumpy urban farmer hobbyist he/him views EN FR ES my own https://linktr.ee/juliengirard 🦋 🐘 @djulik on 🦤
AAS President Dara Norman and Past President Kelsey Johnson published an opinion article in SpaceNews today titled "The future of astronomy is both on Earth and in space." The article is signed by 15 past, current, and incoming AAS presidents.
... before, kinda "every 10-ish years thing" but I didn't make it. 4 Months forwards, here it is, my new website is up and I geeked out a bit with github, html, AI... I wanted a single do it all html file and yet something that looked different than the templates almost everyone seemed to use 🙂 🫠 🙃
On October 19 2025 it was my 20th PhD anniversary, believe it or not, I may have well consumed a bit of the second part of my career. I didn't feel like celebrating or posting anything then. Meh, just another year. I had been meaning to update my professional website....
www.juliengirard.space
Enrique (lead author) and I met back in 2008 at a school in Mexida, Mexico! We finally have a paper together. Before exoplanets, my plan was to study active galactic nuclei with adaptive optics. 18 years later, I did it from space (unprecedented combination of sensitivity and spatial resolution).
Our "Unprecedented Look Into Heart of Circinus Galaxy", an AGN using JWST/NIRISS Aperture Masking Interferometry (AMI) mode.
NASA @stsci.edu Press Release: science.nasa.gov/missions/web...
Nature Comm. paper: www.nature.com/articles/s41...
Props to Anand Sivaramakrishnan who did so much for AMI!
Enrique (lead author) and I met back in 2008 at a school in Mexida, Mexico! We finally have a paper together. Before exoplanets, my plan was to study active galactic nuclei with adaptive optics. 18 years later, I did it from space (unprecedented combination of sensitivity and spatial resolution).
Debris disk around TWA 20, a M star, imaged with JWST/NIRCam coronagraph at 2µm!
Palatnick et al. 2025
arxiv.org/abs/2510.20216
Very true! We struggle to have more than one each year (too many meetings...) but we have a very large crowd each time and nice venues. The concentration of exoplanet scientists in PA/DE/MD/DC/VA is amazing, similar to California's
It's one full Friday, informal, no fee, a amazing platform for ECRs
The CHesapeake bay area EXOplanet Meeting #CHEXO12 has started @jhuapl.bsky.social with a nice and big crowd despite the snow!
www.chexo.org #exoplanets
Good news! En hora buena!
I know this is probably not the time yet but choosing Tenerife (or even Madrid or Barcelona) for Spanish HQ would be wise, more attractive for scientists, engineers, staff and their families :)
No offense for Santa Cruz de La Palma, looks beautiful!!
And on Keswick Rd yet again. I guess it’s wind + dry weather + leaves + restarting furnaces
???
But Y? Y 2.02K
a chart showing the flux from a Y dwarf as a function of wavelength, with a picture of the little brown dwarf in the top right (it looks like a rose), and the 1D and 2D spectra underneath. It rises only at longer wavelengths. It looks a lot like this chocolate price chart.
this is from a paper I'm putting together of a 300 K brown dwarf and it's kind of insane how similar it is
Jupiter aurora movie by JWST NIRCam!
www.youtube.com/watch?v=b1Fo...
oops, that's next year for you and I
youngster (András)
🤩The @4most-eu.bsky.social (#4MOST) facility on @eso.org VISTA telescope in Chile achieved first light.
#MPE scientists played a leading role in developing the Operations System, enabling to link #eROSITA’s X-ray universe with large-scale structure of galaxies.
➡️ More: www.mpe.mpg.de/8102833/news...
First Light for 4MOST!
The 4-metre Multi-Object Spectroscopic Telescope (4MOST) has captured its very first spectra!
Video Credit: AIP/R. de Jong, AIP/K. Riebe, AIP/A. Saviauk, CRAL/J.-K. Krogager
Love the 2b_or_not_2b repo!!
that's wild, literally .
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.
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
JWST successfully observed interstellar object (ISO) 3I/ATLAS. Interesting results. The composition of the coma could be due to a few different scenarios. Additional JWST observations of the object closer to the sun are needed. science.nasa.gov/blogs/3iatla...
Amazing!!!! A NEW gap-carving planet! So far, we haven't been able to image many. WISPIT 2b, like PDS 70 b&c is imaged at many wavelengths from 656nm (H⍺, blue here) to 3.7µm (👏MagAO-X @xwcl.science.web.brid.gy). VLT/SPHERE polarized scattered light at 1.6µm+reddish planet at 2.2µm in the gap, wow!
SETI Live record button logo. Text: Closest Exoplanet Yet? with Franck Marhis and Julien Girard. Background: Artist's concept of a gas giant planet orbiting at a distance from a bright star. Inset: Photos of Franck Marchis and Julien Girard.
Next #SETILive: Closest Exoplanet Yet?
TODAY, 8 August, 3:15 pm PDT
Join astronomers @allplanets.bsky.social and Julien Girard (STScI) as they discuss recent evidence of a Saturn-mass gas giant orbiting Alpha Centauri A—located just 4 light-years away. 🧪 🔭
WATCH LIVE: buff.ly/TplMAD5
Wow, Tonight I just completed 8 years @stsci.edu. I love it 😊
I realize I now have worked there in Baltimore as much as I spent @eso.org in Chile. 16 years as scientist, collectively supporting instruments, operations, maximizing the science return at major observatories, ground and space!
The Space Telescope Science Institute's MAST archive contains 300 million astronomical observations from over 23 different missions.
Here is an animation showing how the archive has built up over time.
Credit: Julie Imig, STScI
Experiencing FOMO big time, not attending #HWO2025) I am glad a lot is youtube broadcasted. I am especially eager to watch these panels sessions on ground/based synergies and on how the #RomanCoronagraph will inform the design choices of the HWO coronagraphs www.youtube.com/watch?v=7Vq3...
Who saw this coming?
Maybe that should go into the discussion of what @eso.org will do after it's ELT, an ELT-N with a TMT design?
I think as a community what we all want is A >25m telescope in the North.
"This is just a small peek"
In 9 hours, livestream!
Habemus CSIT for the Habitable Worlds Observatory (HWO)
science.nasa.gov/astrophysics...