Mastodawn

Eric Bellm Feb 3, 2023

Finally put up my #AAS241 swag: magnetic poetry from the GCN & HEASARC!

Stephen Sekula Jan 29, 2023

From NASAWebb https://twitter.com/NASAWebb on Twitter: A whole new world! 41 light-years away is the small, rocky planet LHS 475 b. At 99% of Earth’s diameter, it’s almost exactly the same size as our home world. This marks the first time researchers have used Webb to confirm an exoplanet. https://t.co/hX8UGXplq2 #AAS241 https://twitter.com/NASAWebb/status/1613240430346264584/photo/1 https://chirp.cooleysekula.net/attachment/f589a31f2215d50ce0292dd346689ecb51e155830b772c37c9892ba6c16aa984/view

NASA Webb Telescope (@NASAWebb) / Twitter

Launched: Dec. 25, 2021. First images revealed: July 12, 2022. Follow along as the world's most powerful space telescope continues to #UnfoldTheUniverse!

Twitter

NASA Jan 18, 2023

✨ Starry surprises in NGC 346
🌌 Early "green pea" galaxies discovered
🥇 First exoplanet confirmed by Webb
📀 New infrared look at dusty disk AU Mic
...and more!

#ICYMI, catch up on Webb updates announced during the recent #AAS241 conference here: https://go.nasa.gov/3ZOcjmj
#JamesWebb

NASA Recaps Webb Telescope Findings From AAS Meeting

Scientists shared new findings and updates from NASA’s James Webb Space Telescope, also called “Webb” or “JWST,” at press conferences during the 241st meeting of the American Astronomical Society (AAS) in Seattle, from Jan. 8 to 12.

NASA

Vivian U Jan 18, 2023

Six negative covid tests since #AAS241... maybe I was lucky enough to have dodged the bullet? (Thank you for the indoor masking policy AAS Leadership!)

Vivian U Jan 17, 2023

Another one of our #JWST #ERS1328 papers hit the arXiv when I was busy with #AAS241 so apologies for the late post -- this one led by Jeff Rich is about the intriguing nature of the nuclear cores in #VV114, complete with #NIRSpec and #MRS SPECTRA!! You know you want to read this for your #JWSTCycle2 proposal... 😉

From Jeff: "We found an AGN where we didn’t expect to, no AGN where others had predicted one, and interesting ISM properties that require a lot more analyses."

https://arxiv.org/abs/2301.02338

GOALS-JWST: Pulling Back the Curtain on the AGN and Star Formation in VV 114

We present results from the James Webb Space Telescope (JWST) Director's Discretionary Time Early Release Science (ERS) program 1328 targeting the nearby, Luminous Infrared Galaxy (LIRG), VV 114. We use the MIRI and NIRSpec instruments to obtain integral-field spectroscopy of the heavily obscured Eastern nucleus (V114E) and surrounding regions. The spatially resolved, high-resolution, spectra reveal the physical conditions in the gas and dust over a projected area of 2-3 kpc that includes the two brightest IR sources, the NE and SW cores. Our observations show for the first time spectroscopic evidence that the SW core hosts an AGN as evidenced by its very low 6.2 μm and 3.3 μm PAH equivalent widths (0.12 and 0.017 μm respectively) and mid and near-IR colors. Our observations of the NE core show signs of deeply embedded star formation including absorption features due to aliphatic hydrocarbons, large quantities of amorphous silicates, as well as HCN due to cool gas along the line of sight. We detect elevated [Fe II]/Pfα consistent with extended shocks coincident with enhanced emission from warm H$_{2}$, far from the IR-bright cores and clumps. We also identify broadening and multiple kinematic components in both H$_{2}$ and fine structure lines caused by outflows and previously identified tidal features.

arXiv.org

Dr Robert Minchin Jan 17, 2023

Back from #aas241 and still (as of this morning) negative for COVID. So it’s farewell to the grey skies of #Seattle and hello to the wide blue skies of New Mexic… oh
#NMwx #Socorro