2022ApJ...939L..16Z

Query : 2022ApJ...939L..16Z

2022ApJ...939L..16Z - Astrophys. J., 939, L16 (2022/November-1)

A Transient “Changing-look” Active Galactic Nucleus Resolved on Month Timescales from First-year Sloan Digital Sky Survey V Data.

ZELTYN G., TRAKHTENBROT B., ERACLEOUS M., RUNNOE J., TRUMP J.R., STERN J., SHEN Y., HERNANDEZ-GARCIA L., BAUER F.E., YANG Q., DWELLY T., RICCI C., GREEN P., ANDERSON S.F., ASSEF R.J., GUOLO M., MacLEOD C., DAVIS M.C., FRIES L., GEZARI S., GROGIN N.A., HOMAN D., KOEKEMOER A.M., KRUMPE M., LAMASSA S., LIU X., MERLONI A., MARTINEZ-ALDAMA M.L., SCHNEIDER D.P., TEMPLE M.J., BROWNSTEIN J.R., IBARRA-MEDEL H., BURKE J., PELLEGRINO C. and KOLLMEIER J.A.

Abstract (from CDS):

We report the discovery of a new “changing-look” active galactic nucleus (CLAGN) event, in the quasar SDSS J162829.17+432948.5 at z = 0.2603, identified through repeat spectroscopy from the fifth Sloan Digital Sky Survey (SDSS-V). Optical photometry taken during 2020-2021 shows a dramatic dimming of Δg ≈ 1 mag, followed by a rapid recovery on a timescale of several months, with the ≲2 month period of rebrightening captured in new SDSS-V and Las Cumbres Observatory spectroscopy. This is one of the fastest CLAGN transitions observed to date. Archival observations suggest that the object experienced a much more gradual dimming over the period of 2011-2013. Our spectroscopy shows that the photometric changes were accompanied by dramatic variations in the quasar-like continuum and broad-line emission. The excellent agreement between the pre- and postdip photometric and spectroscopic appearances of the source, as well as the fact that the dimmest spectra can be reproduced by applying a single extinction law to the brighter spectral states, favor a variable line-of-sight obscuration as the driver of the observed transitions. Such an interpretation faces several theoretical challenges, and thus an alternative accretion-driven scenario cannot be excluded. The recent events observed in this quasar highlight the importance of spectroscopic monitoring of large active galactic nucleus samples on weeks-to-months timescales, which the SDSS-V is designed to achieve.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Supermassive black holes - Quasars - Active galactic nuclei - Transient sources

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 2MASS J16282916+4329483 Sy1 16 28 29.1768995856 +43 29 48.534876600   18.56 18.32     ~ 30 0

Query : 2022ApJ...939L..16Z

Basic data :
2MASS J16282916+4329483 -- Seyfert 1 Galaxy
Other object types: otypes_help 		QSO (2015ApJ), AGN ([VV2003c],[VV2006c],...), Sy1 (2010A&A), G (2021ApJ), * (Gaia), X (1WGA), NIR (2MASS), Opt (SDSS)
ICRS coord. (ep=J2000) : 		16 28 29.1768995856 +43 29 48.534876600 (Optical) [ 0.2187 0.2579 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		16 26 53.8302157713 +43 36 21.263022709 [ 0.2187 0.2579 90 ]
Gal coord. (ep=J2000) : 		068.3928323967407 +43.7050529887365 [ 0.2187 0.2579 90 ]
Proper motions mas/yr : 		-0.185 -0.240 [0.255 0.340 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 68141 [18] / z(spectroscopic) 0.26028 [0.00006] / cz 78030.0 [18.0]
   (Opt) C 2012ApJS..203...21A
Parallaxes (mas): 		0.1401 [0.3682] A 2018yCat.1345....0G
Fluxes (11) :
B 18.56 [~] D 2010A&A...518A..10V
V 18.32 [~] D 2010A&A...518A..10V
G 19.411154 [0.009148] C 2020yCat.1350....0G
J 16.560 [0.129] C 2010AJ....139.2360S
H 16.072 [0.197] C 2010AJ....139.2360S
K 15.059 [0.140] C 2010AJ....139.2360S
u (AB) 18.741 [0.021] C 2012ApJS..203...21A
g (AB) 18.622 [0.008] B 2012ApJS..203...21A
r (AB) 18.218 [0.008] B 2012ApJS..203...21A
i (AB) 17.981 [0.009] B 2012ApJS..203...21A
z (AB) 17.701 [0.019] C 2012ApJS..203...21A
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Identifiers (10) :
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2MASS J16282916+4329483 TIC 219511798 [VV2006c] J162829.2+432948 Gaia DR3 1405502724488878720
SDSS J162829.17+432948.5 1WGA J1628.4+4329 [VV2010c] J162829.2+432948
SDSS J162829.18+432948.5 [VV2003c] J162829.2+432948 Gaia DR2 1405502724488878720

References (30 between 1850 and 2026) (Total 30)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 7    Plx : 1    PM : 2   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : 2MASS J16282916+4329483

Link by name to the catalogue in VizieR :

2MASS J16282916+4329483 SDSS J162829.17+432948.5 SDSS J162829.18+432948.5 Gaia DR2 1405502724488878720 Gaia DR3 1405502724488878720

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