2021RNAAS...5....2G

Query : 2021RNAAS...5....2G

2021RNAAS...5....2G - Research Notes of the AAS, 5, 2 (2021/January-0)

The Quasar SDSS J140821.67+025733.2 Does Not Contain a 196 Billion Solar Mass Black Hole.

GUO H. and BARTH A.J.

Abstract (from CDS):

The black hole in the quasar SDSS J140821.67+025733.2 has been reported to have a mass of 1.96 × 1011M⊙ based on measurements from the SDSS DR12 Quasar Catalog. As a result, references to this object as the most massive known black hole in the universe have recently appeared in scientific articles and in popular media including Wikipedia. We show that this extremely high mass estimate is incorrect, resulting from a faulty measurement of the C IV line width. From a new measurement of the Mg II line width, we derive an estimate of MBH ≈ 8 × 109M⊙.

Abstract Copyright: © 2021. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Black hole physics - Supermassive black holes - Quasars

Simbad objects: 1

goto Full paper

goto View the references in ADS

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 [VV2006] J140821.7+025733 QSO 14 08 21.6662483352 +02 57 33.309499248   18.14 17.72     ~ 27 0

Query : 2021RNAAS...5....2G

Basic data :
[VV2006] J140821.7+025733 -- Quasar
Other object types: otypes_help 		QSO (2011MNRAS,[VV2006],...), * (Gaia), NIR (2MASS), Opt (SDSS)
ICRS coord. (ep=J2000) : 		14 08 21.6662483352 +02 57 33.309499248 (Optical) [ 0.1216 0.0919 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		14 05 49.7909703287 +03 11 45.315863919 [ 0.1216 0.0919 90 ]
Gal coord. (ep=J2000) : 		343.5139181122964 +59.6263365955271 [ 0.1216 0.0919 90 ]
Proper motions mas/yr : 		-0.014 0.103 [0.146 0.103 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 241766 [~] / z(spectroscopic) 2.055000 [~] / cz 616073.50 [~]
   (Opt) D 2018A&A...613A..51P
Fluxes (11) :
B 18.14 [~] D 2010A&A...518A..10V
V 17.72 [~] D 2010A&A...518A..10V
G 17.618744 [0.004766] C 2020yCat.1350....0G
J 16.194 [0.122] C 2010AJ....139.2360S
H 15.625 [0.161] C 2010AJ....139.2360S
K 15.204 [0.209] C 2010AJ....139.2360S
u (AB) 18.1275 [0.0160] C 2020ApJS..250....8L
g (AB) 17.8399 [0.0125] C 2020ApJS..250....8L
r (AB) 17.4015 [0.0127] C 2020ApJS..250....8L
i (AB) 17.1599 [0.0160] C 2020ApJS..250....8L
z (AB) 16.9672 [0.0184] C 2020ApJS..250....8L
SIMBAD within arcmin
Overlay Simbad points in this preview
Back
All CDSPortal (CDSPortal)
Send to sendBySAMP sendBySAMP
sedIcon
within arcsec sed-help-icon

Identifiers (10) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

[VV2006] J140821.7+025733 SDSS J140821.67+025733.2 [VV2003] J140821.7+025733 Gaia DR3 3667562218612085248
2MASS J14082169+0257340 SDSS J140821.66+025733.3 [VV2010] J140821.7+025733
SDSS J140821.67+025733.3 TIC 420740663 Gaia DR2 3667562218612085248

References (27 between 1850 and 2026) (Total 27)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
Follow new references on this object
                Reference summaries :

                from: to:

                 or select by : (not exhaustive, explanation here)

Collections of Measurements Description of Measurements

Velocities : 7    PM : 2   

   

External archives :

Data at NED - NASA/IPAC Extragalactic Database : [VV2006] J140821.7+025733

Link by name to the catalogue in VizieR :

2MASS J14082169+0257340 SDSS J140821.67+025733.3 SDSS J140821.67+025733.2 SDSS J140821.66+025733.3 Gaia DR2 3667562218612085248
Gaia DR3 3667562218612085248

Search by coordinates in Vizier (radius: 5 arcsec)

Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

The annotation server is currently not available. Sorry for any inconvenience

To bookmark this query, right click on this link: simbad:objects in 2021RNAAS...5....2G and select 'bookmark this link' or equivalent in the popup menu