LBT/NOMIC Spectroscopy
LBT/NOMIC spectroscopy
NOMIC is one of the infrared cameras within the Large Binocular Telescope Interferometer. It is primarily used to take images at 8-13 microns. When NOMIC was built, a low resolution grism was installed within one of the filter wheels. Last Fall I was finally able to test it on sky to see how it performed. Lambda Persei is a relatively bright star with a spectral type of A0, similar to Vega. The NOMIC spectrum of Lambda Persei is shown in blue with black error bars. A spectrum of Vega from Rieke+ 2008 is shown in red. They match pretty well besides the region between 9.5 and 10 microns. This is likely due to the telluric calibrator star being observed at a very different air mass than the target. Getting a good telluric calibrator beyond 8 microns is very challenging for ground-based observations. A significant chunk of stars are too dim to get high signal-to-noise in a short period of time relative to the time required for science observations.
More Posts from Infraredastronomy and Others
I PASSED WITH ONLY ONE ERROR
I take my driving test tomorrow!!!!!!!!!!!!
Last week I attended the joint meeting of the National Society of Black Physicists and National Society of Hispanic Physicists in Houston, Texas. I enjoyed seeing friendly colleagues and meeting new researchers. It was an honor to give an invited talk in the astronomy session and I'm happy I could convey the importance of brown dwarfs to folks outside of my subfield.
The first photo is everyone from the University of Arizona (minus Carlos Vargas) who attended. Graduate students Jasmin Washington (Steward Observatory, center) and Kiana McFadden (Lunar and Planetary Laboratory, left) presented their work as well. I had fun walking around an exploring downtown Houston in the evenings. I absolutely adored the POST, which had an open plan plant store with a stage for jazz.
testing touchdesign
Reflections
Spring semester finally ended and things are slowing down just for a little bit. I have about a month before going to present a poster at SPIE and then a talk at Cool Stars 22. There are still many things to be done for my LBT/NOMIC work, but I'm mostly excited to go to my first in person SPIE conference. I started working on infrared detectors right before the pandemic hit and then the last year of graduate school along with some health issues knocked out potential travel.
This past week I finally had the time to do a deep dive back into JWST pipeline end-to-end. Many of the time-series observations done with JWST/NIRSpec have been for spectroscopy of transiting exoplanets. My group got the first time-series observations of a brown dwarf with JWST at medium resolution. There was no space-based observatory prior to JWST that could take time-series spectra in the infrared at a resolution greater than a few hundred. With this extra resolution power hopefully the brown dwarf community can start distinguishing photometric changes from specific molecular gases and cloud species.
I really enjoyed doing this interview for the Brown Dwarf Podcast. It was such a pleasure talking with Phoenix.
After giving colloquia at Wesleyan and the University of Michigan, I took some time to visit the Motown Museum in Detroit. The museum is the site of the first Motown headquarters and recording studio. It was such a pleasure to see an important piece of Black history.
A comparison of available data for Jupiter in 1969 compared to 1996, since then we've learned even more. Paper Link
Reflections
I recently adopted a cat and have named him Lorenzo. At the shelter he was kind of a mean ass cat. Now that he lives as a solo cat I'm seeing a really soft side of him and it warms my heart. I also recently submitted an instrument concept for the Gemini Strategic Planning community input. Not entirely sure where that will go, but I'm proud that I put myself out there with my team.
Images of the Milky Way's galactic center in the mid-infrared.
Left: Image from Becklin and Neugebaur 1975
Right: Image from Dinh+ 2024
Despite not knowing alot about galaxies, I was absolutely blown away by all of the defined structure in the image on the right. During department tea time this week some colleagues were talking about their favorite papers that are older than themselves. I went back to my personal favorite, Infrared Observations of the Galactic Center (Becklin+ 1968) and checked out similar papers from the time. I came across a very old image of the inner parsec region shown on the right.
