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Is there a metallicity ceiling to form carbon stars? - A novel technique reveals a scarcity of C stars in the inner M31 disk
M. L. Boyer, L. Girardi, P. Marigo +10
We use medium-band near-infrared (NIR) Hubble Space Telescope WFC3 photometry with model NIR spectra of Asymptotic Giant Branch (AGB) stars to develop a new tool for efficiently di…
Explaining the [CII]158um Deficit in Luminous Infrared Galaxies - First Results from a Herschel/PACS Study of the GOALS Sample
T. Diaz-Santos, L. Armus, V. Charmandaris +26
We present the first results of a survey of the [CII]158um emission line in 241 luminous infrared galaxies (LIRGs) comprising the Great Observatories All-sky Survey (GOALS) sample,…
The Carnegie Hubble Program: The Infrared Leavitt Law in IC 1613
Victoria Scowcroft, Wendy L. Freedman, Barry F. Madore +5
We have observed the dwarf galaxy IC 1613, at multiple epochs in the mid--infrared using Spitzer and contemporaneously in the near--infrared using the new FourStar near-IR camera o…
The Build-Up of Nuclear Stellar Cusps in Extreme Starburst Galaxies and Major Mergers
S. Haan, L. Armus, J. A. Surace +15
Nuclear stellar cusps are defined as central excess light component in the stellar light profiles of galaxies and are suggested to be stellar relics of intense compact starbursts i…