X-ray Sources in the SSA22 Chandra Field
| Autor: | Radzom, Brandon T., Taylor, Anthony J., Barger, Amy J., Cowie, Lennox L. |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | ApJ 940 114 (2022) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.3847/1538-4357/ac9bfe |
| Popis: | The Hawaii Survey Field SSA22 is the fourth deepest Chandra X-ray field. To allow for the fullest exploration of this field, we present new optical spectroscopy from Keck/DEIMOS and Keck/LRIS, which, in combination with the literature, brings the spectroscopic completeness of the 2--8 keV sample to 62%. We also make optical spectral classifications and estimate photometric redshifts for the sources without spectroscopic redshifts. We then determine hard X-ray luminosity functions (XLFs) for the full sample of Active Galactic Nuclei (AGNs), as well as for the broad-line AGNs (BLAGNs) and the non-BLAGNs separately. Our XLF for the full sample is in good agreement with the literature, showing relatively strong evolution over the redshift range $0.25\le z < 4$. The XLFs for the BLAGNs and the non-BLAGNs imply distinct evolution with redshift, with BLAGNs becoming increasingly dominant at higher redshifts and X-ray luminosities. Comment: 11 pages, 7 figures, Accepted to ApJ |
| Databáze: | arXiv |
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