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27 papers · 2 filters
Searching for Young M Dwarfs with GALEX
Evgenya L. Shkolnik, Michael C. Liu, Iain Neill Reid +2
The census of young moving groups in the solar neighborhood is significantly incomplete in the low-mass regime. We have developed a new selection process to find these missing memb…
SN 2009bb: a Peculiar Broad-Lined Type Ic Supernova
Giuliano Pignata, Maximilian Stritzinger, Alicia Soderberg +23
Ultraviolet, optical, and near-infrared photometry and optical spectroscopy of the broad-lined Type Ic supernova (SN) 2009bb are presented, following the flux evolution from -10 to…
Granulation signatures in the spectrum of the very metal-poor red giant HD122563
I. Ramirez, R. Collet, D. L. Lambert +2
A very high resolution (R=200,000), high signal-to-noise ratio (S/N=340) blue-green spectrum of the very metal-poor ([Fe/H]=-2.6) red giant star HD122563 has been obtained by us at…
Ice chemistry in massive Young Stellar Objects: the role of metallicity
J. M. Oliveira, J. Th. van Loon, G. C. Sloan +6
We present the comparison of the three most important ice constituents (water, CO and CO2) in the envelopes of massive Young Stellar Objects (YSOs), in environments of different me…
SN 2009md: Another faint supernova from a low mass progenitor
M. Fraser, M. Ergon, J. J. Eldridge +21
We present adaptive optics imaging of the core collapse supernova (SN) 2009md, which we use together with archival \emph{Hubble Space Telescope} data to identify a coincident proge…
A search for star-planet interactions in the upsilon Andromedae system at X-ray and optical wavelengths
K. Poppenhaeger, L. F. Lenz, A. Reiners +2
Close-in, giant planets are expected to influence their host stars via tidal or magnetic interaction. But are these effects strong enough in suitable targets known so far to be obs…