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Multiwavelength Study of the Bright X-ray Source Population in the Interacting Galaxies NGC 5774/NGC 5775The X-ray source population in the field of the interacting pair of galaxies NGC 5774/5775 is reported. A total of 49 discrete sources are detected, including 12 ultraluminous X-ray source candidates with lum inosities above 10(exp 39)erg/s in the 0.5 - 8.0 keV X-ray band. Several of these latter are transient X-ray sources that fall below detect ion levels in one of two X-ray observations spaced 15 months apart. X-ray source positions are mapped onto optical and radio images to sear ch for potential counterparts. Eleven sources have optically-bright c ounterparts. Optical colors are used to differentiate these sources, which are mostly located outside the optical extent of the interacting galaxies, as potential globular clusters (3 sources) and quasars (5) . Follow-up optical spectroscopy confirms two of the latter are background quasars.
Document ID
20060025540
Acquisition Source
Marshall Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Ghosh, Kajal K.
(Universities Space Research Association Huntsville, AL, United States)
Swartz, Douglas A.
(Universities Space Research Association Huntsville, AL, United States)
Tennant, Allyn F.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Saripalli, Lakshmi
(Australia Telescope National Facility Narrabri, Australia)
Gandhi, Poshak
(European Southern Observatory Santiago, Chile)
Foellmi, Cedric
(European Southern Observatory Santiago, Chile)
Gutierrez, Carlos M.
(Instituto de Astrofisica de Canarias Tenerife, Spain)
Lopez-Corredoira, Martin
(Instituto de Astrofisica de Canarias Tenerife, Spain)
Date Acquired
August 23, 2013
Publication Date
May 12, 2006
Subject Category
Astronomy
Distribution Limits
Public
Copyright
Other

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