A Hard Look at Local, Optically Selected, Obscured Seyfert Galaxies*

被引：23

作者：

Kammoun, E. S. ^{[1
]}

Miller, J. M. ^{[1
]}

Koss, M. ^{[2
]}

Oh, K. ^{[3
]}

Zoghbi, A. ^{[1
]}

Mushotzky, R. F. ^{[4
,5
]}

Barret, D. ^{[6
]}

Behar, E. ^{[7
]}

Brandt, W. N. ^{[8
,9
,10
]}

Brenneman, L. W. ^{[11
]}

Kaastra, J. S. ^{[12
,13
]}

Lohfink, A. M. ^{[14
]}

Proga, D. ^{[15
]}

Stern, D. ^{[16
]}

机构：

[1] Univ Michigan, Dept Astron, 1085 South Univ Ave, Ann Arbor, MI 48109 USA

[2] Eureka Sci, 2452 Delmer St Suite 100, Oakland, CA 94602 USA

[3] Korea Astron & Space Sci Inst, 776 Daedeokdae Ro, Daejeon 34055, South Korea

[4] Univ Maryland, Dept Astron, College Pk, MD 20742 USA

[5] Univ Maryland, Joint Space Sci Inst, College Pk, MD 20742 USA

[6] Univ Toulouse, IRAP, CNRS, UPS,CNES, 9 Ave Colonel Roche,BP 44346, F-31028 Toulouse 4, France

[7] Technion, Dept Phys, IL-32000 Haifa, Israel

[8] Penn State Univ, Dept Astron & Astrophys, 525 Davey Lab, University Pk, PA 16802 USA

[9] Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA

[10] Penn State Univ, Dept Phys, 104 Davey Lab, University Pk, PA 16802 USA

[11] Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA

[12] SRON Netherlands Inst Space Res, Sorbonnelaan 2, NL-3584 CA Utrecht, Netherlands

[13] Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands

[14] Montana State Univ, Dept Phys, POB 173840, Bozeman, MT 59717 USA

[15] Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA

[16] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr,MS 169-221, Pasadena, MS USA

来源：

ASTROPHYSICAL JOURNAL | 2020年 / 901卷 / 02期

基金：

新加坡国家研究基金会; 美国国家航空航天局;

关键词：

Active galactic nuclei; X-ray active galactic nuclei; Active galaxies; High energy astrophysics; X-ray astronomy; Seyfert galaxies; X-ray surveys; ACTIVE GALACTIC NUCLEI; X-RAY-SPECTRUM; SUPERMASSIVE BLACK-HOLES; XMM-NEWTON; OBSERVATIONAL EVIDENCE; PARAMETER-ESTIMATION; COMPTON REFLECTION; RADIATION PRESSURE; EDDINGTON RATIO; COMPLETE SAMPLE;

D O I：

10.3847/1538-4357/abb29f

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the X-ray spectra of a sample of 19 obscured, optically selected Seyfert galaxies (Sy 1.8, 1.9, and 2) in the local universe (d <= 175 Mpc), drawn from the CfA Seyfert sample. Our analysis is driven by the high sensitivity of NuSTAR in the hard X-rays, coupled with soft X-ray spectra using XMM-Newton, Chandra, Suzaku, and Swift/XRT. We also analyze the optical spectra of these sources in order to obtain accurate mass estimates and Eddington fractions. We employ four different models to analyze the X-ray spectra of these sources, which all provide consistent results. We find that 79%-90% of the sources are heavily obscured with line-of-sight column densityN(H) > 10(23)cm(-2). We also find a Compton-thick (N-H > 10(24)cm(-2)) fraction of 37%-53%. These results are consistent with previous estimates based on multiwavelength analyses. We find that the fraction of reprocessed to intrinsic emission is positively correlated withN(H)and negatively correlated with the intrinsic, unabsorbed X-ray luminosity (in agreement with the Iwasawa-Taniguchi effect). Our results support the hypothesis that radiation pressure regulates the distribution of the circumnuclear material.

引用

页数：27

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