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The Space Interferometry Mission Astrometric Grid Giant-Star Survey. I. Stellar Parameters and Radial Velocity Variability
Dmitry Bizyaev, Verne V. Smith, Jose Arenas +7
We present results from a campaign of multiple epoch echelle spectroscopy of relatively faint (V = 9.5-13.5 mag) red giants observed as potential astrometric grid stars for the Spa…
Echoes from Ancient Supernovae in the Large Magellanic Cloud
A. Rest, N. B. Suntzeff, K. Olsen +13
In principle, the light from historical supernovae could still be visible as scattered-light echoes even centuries later. However, while echoes have been discovered around some nea…
Supernova Cosmology and the ESSENCE project
Jesper Sollerman, Claudio Aguilera, Andy Becker +27
The proper usage of Type Ia supernovae (SNe Ia) as distance indicators has revolutionized cosmology, and added a new dominant component to the energy density of the Universe, dark…
Testing LMC Microlensing Scenarios: The Discrimination Power of the SuperMACHO Microlensing Survey
A. Rest, C. Stubbs, A. C. Becker +18
Characterizing the nature and spatial distribution of the lensing objects that produce the previously measured microlensing optical depth toward the Large Magellanic Cloud (LMC) re…
SN 2005bf: A Possible Transition Event Between Type Ib/c Supernovae and Gamma Ray Bursts
Gaston Folatelli, Carlos Contreras, M. M. Phillips +22
We present u'g'r'i'BV photometry and optical spectroscopy of the Type Ib/Ic SN 2005bf covering the first ~100 days following discovery. The u'g'BV light curves displayed a double-p…
Hubble Space Telescope Observations of Nine High-Redshift ESSENCE Supernovae
Kevin Krisciunas, Peter M. Garnavich, Peter Challis +29
We present broad-band light curves of nine supernovae ranging in redshift from 0.5 to 0.8. The supernovae were discovered as part of the ESSENCE project, and the light curves are a…