2023 SDSS-V Collaboration Meeting

Session

Session 12

Aug 3, 2023, 11:00 AM

Gerald D. Fischbach Auditorium/2-GDFA (160 5th Avenue)

Conveners

Session 12

• Thavisha Dharmawardena

67. Photo-z for AGN via Deep Learning

William Thomas Roster

8/3/23, 11:00 AM

A complete census of supermassive black holes (SMBH) increases our understanding of the role of Active Galactic Nuclei (AGN) in the formation and evolution of galaxies. As AGN detection is less affected by obscuration effects in the X-ray window, eROSITA offers an increased likelihood of detecting these kinds of objects. That being said, a substantial fraction of spectroscopic redshifts...

68. There is No Place Like Home — Finding Birth Radii of Stars in the Milky Way

Lucy Lu

8/3/23, 11:12 AM

Stars move away from their birthplaces over time via a process known as radial migration, which blurs chemo-kinematic relations used for reconstructing the Milky Way formation history. One of the ultimate goals of Galactic Archaeology, therefore, is to find stars’ birth aggregates in the disk via chemical tagging. Here we show that stellar birth radii can be derived directly from the data with...

69. Properties of cold red giants from their spectra

Zoltan Dencs

8/3/23, 11:24 AM

The main goal of our investigation is to determine the atmospheric parameters as well as the chemical abundance of cold red giants. First, we selected a few dozen red giants with Teff<4200K from the APOGEE sample. We observed the spectra of the selected giants with a R=18000 spectrograph mounted on the 1-m diameter telescope of the Hungarian Piszkéstető Observatory. This is the first time the...

70. The Dynamical Length of the Milky Way's Bar

Maddie Lucey

8/3/23, 11:36 AM

Knowing the length of the Milky Way's bar is crucial for correctly accounting for the non-axisymmetric effects in dynamical analysis. However, the mass distribution of the inner Galaxy is poorly constrained, including the length of the Galactic bar. In this talk, I will present a novel method for constraining the length of the Galactic bar using 6D phase-space information to directly integrate...