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The Baryon Oscillation Spectroscopic Survey of SDSS-III
Weiner, Benjamin J.; Finley, Hayley; Brandt, W. N. +162 more
The Baryon Oscillation Spectroscopic Survey (BOSS) is designed to measure the scale of baryon acoustic oscillations (BAO) in the clustering of matter over a larger volume than the combined efforts of all previous spectroscopic surveys of large-scale structure. BOSS uses 1.5 million luminous galaxies as faint as i = 19.9 over 10,000 deg2…
Statistical Properties of Galactic δ Scuti Stars: Revisited
Byun, Y. -I.; Kim, D. -W.; Protopapas, P. +1 more
We present statistical characteristics of 1578 δ Scuti stars including nearby field stars and cluster member stars within the Milky Way. We obtained 46% of these stars (718 stars) from work by Rodríguez and collected the remaining 54% of stars (860 stars) from other literature. We updated the entries with the latest information of sky coordinates,…
Optical and X-Ray Studies of 10 X-Ray-selected Cataclysmic Binaries
Thorstensen, John R.; Halpern, Jules
We report on ground-based optical observations of 10 cataclysmic binaries that were discovered through their X-ray emission. Time-resolved radial velocity spectroscopy yields unambiguous orbital periods for eight objects and ambiguous results for the remaining two. The orbital periods range from 87 minutes to 9.38 hr. We also obtained time-series …
Analysis of Detached Eclipsing Binaries near the Turnoff of the Open Cluster NGC 7142
Orosz, Jerome; Shetrone, Matthew; Sandquist, Eric L. +1 more
We analyze extensive BVRCIC photometry and radial velocity measurements for three double-lined deeply eclipsing binary stars in the field of the old open cluster NGC 7142. The short period (P = 1.9096825 days) detached binary V375 Cep is a high probability cluster member, and has a total eclipse of the secondary star. The cha…
Phase-resolved Infrared Spectroscopy and Photometry of V1500 Cygni, and a Search for Similar Old Classical Novae
Harrison, Thomas E.; Lyke, James E.; Campbell, Randy D.
We present phase-resolved near-infrared photometry and spectroscopy of the classical nova (CN) V1500 Cyg to explore whether cyclotron emission is present in this system. While the spectroscopy do not indicate the presence of discrete cyclotron harmonic emission, the light curves suggest that a sizable fraction of its near-infrared fluxes are due t…
XMM-Newton Observation of the α Persei Cluster
Wolk, Scott J.; Pillitteri, Ignazio; Remage Evans, Nancy +1 more
We report on the analysis of an archival observation of part of the α Persei cluster obtained with XMM-Newton. We detected 102 X-ray sources in the band 0.3-8.0 keV, of which 39 of them are associated with the cluster as evidenced by appropriate magnitudes and colors from Two Micron All Sky Survey photometry. We extend the X-ray luminosity distrib…
Statistical Study of 2XMMi-DR3/SDSS-DR8 Cross-correlation Sample
Zhao, Yong-Heng; Wu, Xue-Bing; Zhou, Xin-Lin +1 more
Cross-correlating the XMM-Newton 2XMMi-DR3 catalog with the Sloan Digital Sky Survey (SDSS) Data Release 8, we obtain one of the largest X-ray/optical catalogs and explore the distribution of various classes of X-ray emitters in the multidimensional photometric parameter space. Quasars and galaxies occupy different zones while stars scatter in the…
XMM-Newton Observations of Luminous Sources in Nearby Galaxies NGC 4395, NGC 4736, and NGC 4258
Balman, S.; Akyuz, A.; Sonbas, E. +3 more
We present the results of a study of non-nuclear discrete sources in a sample of three nearby spiral galaxies (NGC 4395, NGC 4736, and NGC 4258) based on XMM-Newton archival data supplemented with Chandra data for spectral and timing analyses. A total of 75 X-ray sources have been detected within the D 25 regions of the target galaxies.…