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On The Hydrogen Emission From The Type Ia Supernova 2002ic
Lifan Wang, Dietrich Baade, Peter Hoeflich +3
The discovery of SN 2002ic and subsequent spectroscopic studies have led to the surprising finding that SN 2002ic is a Type Ia supernova with strong ejecta-circumstellar interactio…
Forming Young Bulges within Existing Disks: Statistical Evidence for External Drivers
Sheila J. Kannappan, Rolf A. Jansen, Elizabeth J. Barton
Contrary to traditional models of galaxy formation, recent observations suggest that some bulges form within preexisting disk galaxies. Such late-epoch bulge formation within disks…
GRBlog: A Database for Gamma-Ray Bursts
R. Quimby, E. McMahon, J. Murphy
GRBlog is an on-line database providing researchers with quick access to all information reported in the GCN Circulars. Users of the GRBlog web site (grad40.as.utexas.edu/grblog.ph…
Line formation in solar granulation: IV. [O I], OI and OH lines and the photospheric O abundance
M. Asplund, N. Grevesse, A. J. Sauval +2
The solar photospheric oxygen abundance has been determined from [OI], OI, OH vibration-rotation and OH pure rotation lines by means of a realistic time-dependent, 3D, hydrodynamic…
Searching for Planets in the Hyades III: The Quest for Short-Period Planets
D. Paulson, S. Saar, W. Cochran +1
We have been using the Keck I High Resolution Spectrograph (HIRES) to search for planetary companions in the Hyades cluster. We selected four stars from this sample which showed si…
Cloud Structure and Physical Conditions in Star-forming Regions from Optical Observations. I. Data and Component Structure
K. Pan, S. R. Federman, K. Cunha +2
We present high-resolution optical spectra (at ~0.6--1.8 km s-1) of interstellar CN, CH, CH^+, \ion{Ca}{1}, \ion{K}{1}, and \ion{Ca}{2} absorption toward 29 lines of sight in three…