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- Center for Astrophysics Harvard & SmithsonianUS436 papers
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81 papers · 1 filter
Orbital Period Changes in WZ Sagittae
Joseph Patterson, Geoffrey Stone, Jonathan Kemp +19
We report a long-term (1961-2017) study of the eclipse times in the dwarf nova WZ Sagittae, in an effort to learn its rate of orbital-period change. Some wiggles with a time scale…
The Updated Multiple Star Catalog
Andrei Tokovinin
The catalog of hierarchical stellar systems with three or more components is an update of the original 1997 version of the MSC. For two thousand hierarchies, the new MSC provides d…
More Rapidly Rotating PMS M Dwarfs with Light Curves Suggestive of Orbiting Clouds of Material
John Stauffer, Luisa Rebull, Trevor David +8
In a previous paper, using data from K2 Campaign 2, we identified 11 very low mass members of the Oph and Upper Scorpius star-forming region as having periodic photometric vari…
Studying the Ultraviolet Spectrum of the First Spectroscopically Confirmed Supernova at redshift two
M. Smith, M. Sullivan, R. C. Nichol +87
We present observations of DES16C2nm, the first spectroscopically confirmed hydrogen-free superluminous supernova (SLSN-I) at redshift z~2. DES16C2nm was discovered by the Dark Ene…
Dark Energy Survey Year 1 Results: Calibration of redMaGiC Redshift Distributions in DES and SDSS from Cross-Correlations
R. Cawthon, C. Davis, M. Gatti +88
We present calibrations of the redshift distributions of redMaGiC galaxies in the Dark Energy Survey Year 1 (DES Y1) and Sloan Digital Sky Survey (SDSS) DR8 data. These results det…
Dark Energy Survey Year 1 Results: galaxy mock catalogues for BAO
S. Avila, M. Crocce, A. J. Ross +51
Mock catalogues are a crucial tool in the analysis of galaxy surveys data, both for the accurate computation of covariance matrices, and for the optimisation of analysis methodolog…