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A Star in the M31 Giant Stream: the Highest Negative Stellar Velocity Known
N. Caldwell, H. Morrison, S. J. Kenyon +3
We report on a single star, B030D, observed as part of a large survey of objects in M31, which has the unusual radial velocity of -780 km/s. Based on details of its spectrum, we fi…
Yellow Supergiants in the Andromeda Galaxy (M31)
Maria R. Drout, Philip Massey, Georges Meynet +2
The yellow supergiant content of nearby galaxies can provide a critical test of stellar evolution theory, bridging the gap between the hot, massive stars and the cool red supergian…
Active Galactic Nuclei and the Truncation of Star Formation in K+A Galaxies
Michael J. I. Brown, John Moustakas, Nelson Caldwell +7
We have searched for active galactic nuclei (AGNs) in K+A galaxies, using multiwavelength imaging and spectroscopy in the Bootes field of the NOAO Deep Wide-Field Survey. The K+A g…
CfA3: 185 Type Ia Supernova Light Curves from the CfA
Malcolm Hicken, Peter Challis, Saurabh Jha +5
We present multi-band photometry of 185 type-Ia supernovae (SN Ia), with over 11500 observations. These were acquired between 2001 and 2008 at the F. L. Whipple Observatory of the…