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Asymmetric Drift in the Andromeda Galaxy (M31) as a Function of Stellar Age
Amanda C. N. Quirk, Puragra Guhathakurta, Laurent Chemin +5
We analyze the kinematics of Andromeda's disk as a function of stellar age by using photometry from the Panchromatic Hubble Andromeda Treasury (PHAT) survey and spectroscopy from t…
Spatially Resolved Metal Loss from M31
O. Grace Telford, Jessica K. Werk, Julianne J. Dalcanton +1
As galaxies evolve, they must enrich and exchange gas with the surrounding medium, but the timing of these processes and how much gas is involved remain poorly understood. In this…
Comparing Chandra and Hubble in the Northern Disk of M31
Benjamin F. Williams, Margaret Lazzarini, Paul Plucinsky +9
The X-ray source populations within galaxies are typically difficult to identify and classify from X-ray data alone. We are able to break through this barrier by combining deep new…
Kinematics of the Atomic ISM in M33 on 80 pc scales
Eric W. Koch, Erik W. Rosolowsky, Felix J. Lockman +7
We present new L-band ($1\mbox{--}2$ GHz) observations of the nearby spiral galaxy M33 with 80 pc resolution obtained with the Karl G. Jansky Very Large Array. The HI observations,…
Constraints for the Progenitor Masses of Historic Core-Collapse Supernovae
Benjamin F. Williams, Tristan J. Hillis, Jeremiah W. Murphy +3
We age-date the stellar populations associated with 12 historic nearby core-collapse supernovae (CCSNe) and 2 supernova impostors, and from these ages, we infer their initial masse…
Stellar and nebular diagnostics in the UV for star-forming galaxies
Nell Byler, Julianne Dalcanton, Charlie Conroy +4
There is a long history of using optical emission and absorption lines to constrain the metallicity and ionization parameters of gas in galaxies. However, comparable diagnostics ar…