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TYC 8380-1953-1: Discovery of an RS CVn Binary Through the XMM-Newton Slew Survey
Stelzer, B.; López-Santiago, J.; Saxton, R.
In this article we report the discovery of the chromospherically active (RS CVn type) binary TYC 8380-1953-1 through the XMM-Newton slew survey and present results of our optical and X-ray follow-up. With a flux limit of 6 × 10-13 ergs cm-2 s-1 in the soft band (0.2-2 keV), the XMM-Newton slew has a similar sensiti…
The [Fe/H] Dependence on the Ca ii- MV Relationship
Pancino, E.; Wallerstein, George; Gomez, T. A.
We have examined the Wilson-Bappu effect, a relationship between the absolute magnitude of the star, MV, and the logarithm of the Ca ii emission width, W0, over the largest MV range to date, +13 to -5, covering M-dwarfs to type Ia supergiants. We used an extensive literature, the latest Hipparcos reduction, data fr…
Using the XMM-Newton Optical Monitor to Study Cluster Galaxy Evolution
Kuntz, K. D.; Hammer, Derek; Miller, Neal A. +2 more
We explore the application of XMM-Newton Optical Monitor (XMM-OM) ultraviolet (UV) data to study galaxy evolution. Our sample is constructed as the intersection of all Abell clusters with z < 0.05 and having archival XMM-OM data in either the UVM2 or UVW1 filters, plus optical and UV photometry from the Sloan Digital Sky Survey and GALEX, respe…
Intermediate Velocity Gas Detected Towards the NGC 6752 Globular Cluster
Welsh, Barry Y.; Lallement, Rosine
We present medium resolution ultraviolet absorption measurements recorded with the HST-COS and FUSE spectrographs towards two post-AGB stars (UIT-1 and B1754) associated with the NGC 6752 globular cluster. We have detected intermediate velocity (IV) gas with Vlsr ∼ +38 km s-1 along the 3.9 kpc sight-line to the cluster in the…