Journal
ASTROPHYSICAL JOURNAL
Volume 850, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.3847/1538-4357/aa8ec9
Keywords
black hole physics; galaxies: active; galaxies: nuclei; quasars: general
Categories
Funding
- Swiss National Science Foundation (SNSF) [PZ00P2_154799/1]
- SNSF [PPOOP2 138979/1, 200021_157021]
- NASA Headquarters under the NASA Earth and Space Science Fellowship Program [NNX14AQ07H]
- Center of Excellence in Astrophysics and Associated Technologies [PFB 06]
- FONDECYT [1120061]
- CONICYT Anillo project [ACT1101]
- Alfred P. Sloan Foundation
- National Science Foundation
- U.S. Department of Energy Office of Science
- University of Arizona
- Brazilian Participation Group
- Brookhaven National Laboratory
- University of Cambridge
- Carnegie Mellon University
- University of Florida
- French Participation Group
- German Participation Group
- Harvard University
- Instituto de Astrofisica de Canarias
- Michigan State/Notre Dame/JINA Participation Group
- Johns Hopkins University
- Lawrence Berkeley National Laboratory
- Max Planck Institute for Astrophysics
- Max Planck Institute for Extraterrestrial Physics
- New Mexico State University
- New York University
- Ohio State University
- Pennsylvania State University
- University of Portsmouth
- Princeton University
- Spanish Participation Group
- University of Tokyo
- University of Utah
- Vanderbilt University
- University of Virginia
- University of Washington
- Yale University
- [GN-2009B-Q-114]
- [GN-2010A-Q-35]
- [GN-2011A-Q-81]
- [GN-2011B-Q-96]
- [GN-2012A-Q-28]
- [GN-2012B-Q-25]
- [GS-2010A-Q-54]
- [GS-2011B-Q80]
- Grants-in-Aid for Scientific Research [17F17321, 16J00600, 17K05384] Funding Source: KAKEN
- Swiss National Science Foundation (SNF) [200021_157021, PZ00P2_154799] Funding Source: Swiss National Science Foundation (SNF)
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We present the first catalog and data release of the Swift-BAT AGN Spectroscopic Survey. We analyze optical spectra of the majority of the detected AGNs (77%, 642/836)based on their 14-195 keV emission in the 70-month Swift-BAT all-sky catalog. This includes redshift determination, absorption and emission-line measurements, and black hole mass and accretion rate estimates for the majority of obscured and unobscured AGNs (74%, 473/642), with 340 measured for the first time. With-90% of sources at z < 0.2, the survey represents a significant advance in the census of hard X-ray-selected AGNs in the local universe. In this first catalog paper, we describe the spectroscopic observations and data sets, and our initial spectral analysis. The FWHMs of the emission lines show broad agreement with the X-ray obscuration (similar to 94%), such that Sy 1-1.8 have N-H < 10(21.9) cm(-2), and Seyfert 2 have N-H > 10(21.9) cm(-2). Seyfert 1.9, however, show a range of column densities. Compared to narrow-line AGNs in the SDSS, the X-ray-selected AGNs have a larger fraction of dusty host galaxies (H alpha/H beta > 5), suggesting that these types of AGN are missed in optical surveys. Using the [O III] lambda 5007/H beta and [N lambda 6583/H alpha emission-line diagnostic, about half of the sources are classified as Seyferts similar to 15% reside in dusty galaxies that lack an H beta detection, but for which the upper limits on line emission imply either a Seyfert or LINER similar to 15% are in galaxies with weak or no emission lines despite high-quality spectra, and a few percent each are LINERS, composite galaxies, H II regions, or in known beamed AGNs.
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