| タイトル | Multiwavelength Study of the Bright X-ray Source Population in the Interacting Galaxies NGC 5774/NGC 5775 |
| 著者（英） | Foellmi, Cedric; Saripalli, Lakshmi; Gutierrez, Carlos M.; Ghosh, Kajal K.; Gandhi, Poshak; Swartz, Douglas A.; Lopez-Corredoira, Martin; Tennant, Allyn F. |
| 著者所属（英） | NASA Marshall Space Flight Center |
| 発行日 | 2006-05-12 |
| 言語 | eng |
| 内容記述 | The 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. |
| NASA分類 | Astronomy |
| 権利 | Copyright |
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