In Honor and Memory of Nobel Laureate Dr. Rudy Marcus
(Passed away on July 16, 2026)
(To Be Updated)
(Passed away on July 16, 2026)
(To Be Updated)
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Dr. Raja GuhaThakurtaUniversity of California Santa CruzLocal Group Galaxies: Dynamical Heating Of Stellar Disks, Stellar Halos, And The Discovery Of Weak Cn Spectral Absorption In Red Supergiant Stars Frye International Symposium (Intl. Symp. on Astrophysics) Back to Plenary Lectures » |
Abstract:I will present highlights from our group's studies of the resolved stellar population of five Local Group disk galaxies: Milky Way (MW), Andromeda (M31), Triangulum (M33), Large Magellanic Cloud (LMC), and Small Magellanic Cloud (SMC). These studies include the SPLASH and TREX spectroscopic surveys of several thousand stars in the disk and halo of M31 and M33, respectively, that span a wide range of stellar masses and therefore stellar lifetimes. The SPLASH and TREX surveys of M31 and M33 were carried out with the DEIMOS instrument while the spectroscopic follow up of RR Lyrae stars in the distant MW halo was carried out with the ESI instrument; these two instruments are on the Keck II 10-meter telescope on the summit of Maunakea on the Big Island of Hawaii. The following papers describe the key findings that I will present in my talk: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] |
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