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97 papers · 1 filter
The Clusters AgeS Experiment (CASE). Variable stars in the field of the globular cluster NGC 6362
J. Kaluzny, I. B. Thompson, M. Rozyczka +2
The field of the globular cluster NGC 6362 was monitored between 1995 and 2009 in a search for variable stars. BV light curves were obtained for 69 periodic variables including 34…
AGB Sodium Abundances in the Globular Cluster 47 Tucanae (NGC 104)
Christian I. Johnson, Iain McDonald, Catherine A. Pilachowski +8
A recent analysis comparing the [Na/Fe] distributions of red giant branch (RGB) and asymptotic giant branch (AGB) stars in the Galactic globular cluster NGC 6752 found that the rat…
WISEP J004701.06+680352.1: An intermediate surface gravity, dusty brown dwarf in the AB Dor Moving Group
John E. Gizis, Katelyn N. Allers, Michael C. Liu +4
We present spectroscopy, astrometry, and photometry of the brown dwarf WISEP J004701.06+680352.1 (W0047+68), an unusually red field L dwarf at a distance of parsecs.…
Overview of the SDSS-IV MaNGA Survey: Mapping Nearby Galaxies at Apache Point Observatory
Kevin Bundy, Matthew A. Bershady, David R. Law +65
We present an overview of a new integral field spectroscopic survey called MaNGA (Mapping Nearby Galaxies at Apache Point Observatory), one of three core programs in the fourth-gen…
Correlation between the photon index and X-ray luminosity of black hole X-ray binaries and active galactic nuclei: observations and interpretation
Qi-Xiang Yang, Fu-Guo Xie, Feng Yuan +4
We investigate the observed correlation between the 2--10 keV X-ray luminosity (in unit of the Eddington luminosity; ) and the photon index () of the X-r…
Exo-zodi modelling for the Large Binocular Telescope Interferometer
Grant M. Kennedy, Mark C. Wyatt, Vanessa Bailey +18
Habitable zone dust levels are a key unknown that must be understood to ensure the success of future space missions to image Earth analogues around nearby stars. Current detection…