dc.contributor.author | Mathur, Smita | |
dc.contributor.author | Elvis, Martin S. | |
dc.contributor.author | Wilkes, Belinda Jane | |
dc.date.accessioned | 2017-02-14T17:46:30Z | |
dc.date.issued | 1995 | |
dc.identifier.citation | Mathur, Smita, Martin Elvis, and Belinda Wilkes. 1995. “Testing Unified X-Ray/Ultraviolet Absorber Models with NGC 5548.” The Astrophysical Journal 452 (October): 230. doi:10.1086/176294. | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://nrs.harvard.edu/urn-3:HUL.InstRepos:30248671 | |
dc.description.abstract | The bright Seyfert galaxy NGC 5548 shows absorption features in its X-ray and UV spectra. The large amount of optical/UV and X-ray monitoring data available for this object makes it an ideal candidate to test our model of a common X-ray/UV absorber. We show that the X-ray/UV absorption is caused by a highly ionized (2.2 < U < 2.8), high column density (NH = 3.8 × 1021 cm-2) gas situated outside the C IV emitting region (2 × 1016 cm < rabs < 2 × 1018 cm). The gas is outflowing with a mean velocity of 1200±260 km s-1 and corresponding kinetic luminosity of ˜1043 ergs s-1. The gas is more highly ionized and has a much larger column density than earlier estimates based on UV data alone. This third example of an X-ray/UV absorber reinforces our earlier conclusion that outflowing, highly ionized gas is common in the inner regions of quasars. | en_US |
dc.description.sponsorship | Astronomy | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | IOP Publishing | en_US |
dc.relation.isversionof | doi:10.1086/176294 | en_US |
dc.relation.hasversion | http://adsabs.harvard.edu/abs/1995ApJ...452..230M | en_US |
dash.license | LAA | |
dc.subject | GALAXIES: INDIVIDUAL NGC NUMBER: NGC 5548 | en_US |
dc.subject | Galaxies: active | en_US |
dc.subject | Galaxies: Seyfert | en_US |
dc.subject | ULTRAVIOLET: GALAXIES | en_US |
dc.subject | X-rays: galaxies | en_US |
dc.title | Testing Unified X-Ray/Ultraviolet Absorber Models with NGC 5548 | en_US |
dc.type | Journal Article | en_US |
dc.description.version | Version of Record | en_US |
dc.relation.journal | The Astrophysical Journal | en_US |
dash.depositing.author | Wilkes, Belinda Jane | |
dc.date.available | 2017-02-14T17:46:30Z | |
dc.identifier.doi | 10.1086/176294 | * |
dash.contributor.affiliated | Wilkes, Belinda | |
dash.contributor.affiliated | Elvis, Martin | |