The SDSS-V Black Hole Mapper Reverberation Mapping Project: Unusual Broad-line Variability in a Luminous Quasar

被引：8

作者：

Fries, Logan B. ^{[1
]}

Trump, Jonathan R. ^{[1
]}

Davis, Megan C. ^{[1
]}

Grier, C. J. ^{[2
,3
]}

Shen, Yue ^{[4
,5
]}

Anderson, Scott F. ^{[6
]}

Dwelly, Tom ^{[7
]}

Eracleous, Michael ^{[8
,9
]}

Homayouni, Y. ^{[8
,9
]}

Horne, Keith ^{[10
]}

Krumpe, Mirko ^{[11
]}

Morrison, Sean ^{[4
]}

Runnoe, Jessie C. ^{[12
]}

Trakhtenbrot, Benny ^{[13
]}

Assef, Roberto J. ^{[14
]}

Brandt, W. N. ^{[8
,15
,16
]}

Brownstein, Joel ^{[17
]}

Dabbieri, Collin ^{[12
]}

Fix, Alexander ^{[18
]}

Alvarez, Gloria Fonseca ^{[1
,19
]}

Frederick, Sara ^{[12
]}

Hall, P. B. ^{[20
]}

Koekemoer, Anton M. ^{[21
]}

Li, Jennifer I-Hsiu ^{[22
]}

Liu, Xin ^{[4
,5
]}

Loli Martinez-Aldama, Mary ^{[23
,24
]}

Ricci, Claudio ^{[14
,25
]}

Schneider, Donald P. ^{[8
,9
]}

Sharp, Hugh W. ^{[1
]}

Temple, Matthew J. ^{[14
]}

Yang, Qian ^{[4
,26
]}

Zeltyn, Grisha ^{[13
]}

Bizyaev, Dmitry ^{[27
,28
,29
]}

机构：

[1] Univ Connecticut, Dept Phys, Unit 3046, 196A Auditorium Rd, Storrs, CT 06269 USA

[2] Univ Arizona, Steward Observ, 933 North Cherry Ave, Tucson, AZ 85721 USA

[3] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA

[4] Univ Illinois, Dept Astron, Urbana, IL 61801 USA

[5] Univ Illinois, Natl Ctr Supercomp Applicat, Urbana, IL 61801 USA

[6] Univ Washington, Astron Dept, Box 351580, Seattle, WA 98195 USA

[7] Max Planck Inst Extraterr Phys, Giessenbachstr, D-85748 Garching, Germany

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

[9] Penn State Univ, Inst Gravitat & Cosmos, Davey Lab 525, University Pk, PA 16802 USA

[10] Univ St Andrews, SUPA Phys & Astron, Fife KY16 9SS, Scotland

[11] Leibniz Inst Astrophys AIP, Sternwarte 16, D-14482 Potsdam, Germany

[12] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA

[13] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel

[14] Univ Diego Portales, Fac Ingn & Ciencias, Inst Estudios Astrofis, Av Ejercito Libertador 441, Santiago, Chile

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

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

[17] Univ Utah, Dept Phys & Astron, 115 S 1400 E, Salt Lake City, UT 84112 USA

[18] Univ Colorado, Dept Astrophys & Planetary Sci, 2000 Colorado Ave, Boulder, CO 80309 USA

[19] NSFs Natl Opt Infrared Astron Res Lab, 950 N Cherry Ave, Tucson, AZ 85719 USA

[20] York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada

[21] Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA

[22] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA

[23] Univ Valparaiso, Fac Ciencias, Inst Fis & Astron, Gran Bretana 1111, Valparaiso, Chile

[24] Univ Chile, Dept Astron, Casilla 36D, Santiago, Chile

[25] Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China

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

[27] Apache Point Observ, POB 59, Sunspot, NM 88349 USA

[28] New Mexico State Univ, POB 59, Sunspot, NM 88349 USA

[29] Moscow MV Lomonosov State Univ, Sternberg Astron Inst, Moscow, Russia

来源：

ASTROPHYSICAL JOURNAL | 2023年 / 948卷 / 01期

基金：

欧洲研究理事会; 美国国家科学基金会; 以色列科学基金会;

关键词：

DIGITAL SKY SURVEY; ACTIVE GALACTIC NUCLEI; H-BETA EMISSION; IONIZED OUTFLOWS; BINARY; REGION; MASS; I; EVOLUTION; SPECTRA;

D O I：

10.3847/1538-4357/acbfb7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a high-cadence multiepoch analysis of dramatic variability of three broad emission lines (Mg ii, H beta, and H alpha) in the spectra of the luminous quasar (lambda L ( lambda )(5100 angstrom) = 4.7 x 10(44) erg s(-1)) SDSS J141041.25+531849.0 at z = 0.359 with 127 spectroscopic epochs over nine years of monitoring (2013-2022). We observe anticorrelations between the broad emission-line widths and flux in all three emission lines, indicating that all three broad emission lines "breathe" in response to stochastic continuum variations. We also observe dramatic radial velocity shifts in all three broad emission lines, ranging from Delta v similar to 400 km s(-1) to similar to 800 km s(-1), that vary over the course of the monitoring period. Our preferred explanation for the broad-line variability is complex kinematics in the gas in the broad-line region. We suggest a model for the broad-line variability that includes a combination of gas inflow with a radial gradient, an azimuthal asymmetry (e.g., a hot spot), superimposed on the stochastic flux-driven changes to the optimal emission region ("line breathing"). Similar instances of line-profile variability due to complex gas kinematics around quasars are likely to represent an important source of false positives in radial velocity searches for binary black holes, which typically lack the kind of high-cadence data we analyze here. The long-duration, wide-field, and many-epoch spectroscopic monitoring of SDSS-V BHM-RM provides an excellent opportunity for identifying and characterizing broad emission-line variability, and the inferred nature of the inner gas environment, of luminous quasars.

引用

页数：20

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