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- Center for Astrophysics Harvard & SmithsonianUS436 papers
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46 papers · 1 filter
The Disk Atmospheres of Three Herbig Ae/Be Stars
David E. Harker, Charles E. Woodward, Diane H. Wooden +1
We present infrared (IR) spectrophotometry () of three Herbig Ae/Be stars surrounded by possible protoplanetary disks: HD 150193, HD100546 and HD 179218. We construct…
Light and Motion in the Local Volume
Alan B. Whiting
Using high-quality data on 149 galaxies within 10 megaparsecs (Mpc), I find no correlation between luminosity and peculiar velocity at all. There is no unequivocal sign on scales o…
The Stellar Content of Obscured Galactic Giant HII Regions V: G333.1--0.4
E. Figueredo, R. D. Blum, A. Damineli +1
We present high angular resolution near--infrared images of the obscured Galactic Giant HII (GHII) region G333.1--0.4 in which we detect an OB star cluster. For G333.1--0.4, we fin…
Multi-epoch Spectroscopy of IY UMa: Quiescence, Rise, Normal Outburst & Superoutburst
Daniel J. Rolfe, Carole A. Haswell, Timothy M. C. Abbott +3
We exploit rare observations covering the time before and during a normal outburst in the deeply-eclipsing SU UMa system IY UMa to study the dramatic changes in the accretion flow…
Chandra HRC Localization of the Low Mass X-ray Binaries X1624-490 and X1702-429: The Infrared Counterparts
S. Wachter, J. W. Wellhouse, S. K. Patel +3
We report on the precise localization of the low mass X-ray binaries X1624-490 and X1702-429 with the Chandra HRC-I. We determine the best positions to be 16:28:02.825 -49:11:54.61…
Spectroscopy of High-Redshift Supernovae from the ESSENCE Project: The First Two Years
T. Matheson, S. Blondin, R. J. Foley +28
We present the results of spectroscopic observations of targets discovered during the first two years of the ESSENCE project. The goal of ESSENCE is to use a sample of ~200 Type Ia…