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Spectroscopic Follow-up of X-ray Sources in the ChaMPlane Survey: Identification of a New Cataclysmic Variable
Mathieu Servillat, J. Grindlay, M. van den Berg +3
We present a multi-object optical spectroscopy follow-up study of X-ray sources in a field along the Galactic Plane (l=327.42 deg, b=2.26 deg) which is part of the Chandra Multi-wa…
DASCH Discovery of A Possible Nova-like Outburst in A Peculiar Symbiotic Binary
Sumin Tang, Jonathan Grindlay, Maxwell Moe +4
We present photometric and spectroscopic observations of a peculiar variable (designated DASCH J075731.1+201735 or J0757) discovered from our DASCH project using the digitized Harv…
NSV 11154 Is a New R Coronae Borealis Star
Nutsinee Kijbunchoo, Geoffrey C. Clayton, Timothy C. Vieux +7
NSV 11154 has been confirmed as a new member of the rare hydrogen deficient R Coronae Borealis (RCB) stars based on new photometric and spectroscopic data. Using new photometry, as…
Flight Performance of an advanced CZT Imaging Detector in a Balloon-borne Wide-Field Hard X-ray Telescope - ProtoEXIST1
J. Hong, B. Allen, J. Grindlay +6
We successfully carried out the first high-altitude balloon flight of a wide-field hard X-ray coded-aperture telescope ProtoEXIST1, which was launched from the Columbia Scientific…
Panchromatic Observations of SN 2011dh Point to a Compact Progenitor Star
Alicia M. Soderberg, R. Margutti, B. A. Zauderer +32
We report the discovery and detailed monitoring of X-ray emission associated with the Type IIb SN 2011dh using data from the Swift and Chandra satellites, placing it among the best…
Identification of Faint Chandra X-ray Sources in the Core-Collapsed Globular Cluster NGC 6397: Evidence for a Bimodal Cataclysmic Variable Population
Haldan N. Cohn, Phyllis M. Lugger, Sean M. Couch +6
We have searched for optical identifications for 79 Chandra X-ray sources that lie within the half-mass radius of the nearby, core-collapsed globular cluster NGC 6397, using deep H…