The CfA Einstein Observatory extended deep X-ray survey
Journal Article
·
· Astrophysical Journal; (United States)
- Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (USA) Space Telescope Science Institute, Baltimore, MD (USA)
All IPC exposures in the Einstein Extended Deep X-ray Survey program have been reanalyzed. The current survey covers about 2.3 sq deg with a typical limiting sensitivity of about 5 x 10 to the -14th ergs/sq cm/s in the energy range from 0.8-3.5 keV. A total of 25 IPC sources are detected above a threshold of 4.5 sigma. A total of 18 are detected independently in the HRI, leading to the identification of six with stars and 11 with extragalactic objects. The remaining sources are classified as extragalactic. The population of identified extragalactic objects is dominated by QSOs, with one or two possible clusters. The basic conclusions of the original survey remain unchanged. 49 refs.
- OSTI ID:
- 5259545
- Journal Information:
- Astrophysical Journal; (United States), Journal Name: Astrophysical Journal; (United States) Vol. 374; ISSN ASJOA; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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