2018ApJ...854..128S

Query : 2018ApJ...854..128S

2018ApJ...854..128S - Astrophys. J., 854, 128-128 (2018/February-3)

The Sloan Digital Sky Survey Reverberation Mapping Project: the C IV blueshift, its variability, and its dependence upon quasar properties.

SUN M., XUE Y., RICHARDS G.T., TRUMP J.R., SHEN Y., BRANDT W.N. and SCHNEIDER D.P.

Abstract (from CDS):

We use the multi-epoch spectra of 362 quasars from the Sloan Digital Sky Survey Reverberation Mapping project to investigate the dependence of the blueshift of C IV relative to Mg II on quasar properties. We confirm that high-blueshift sources tend to have low C IV equivalent widths (EWs), and that the low-EW sources span a range of blueshift. Other high-ionization lines, such as He II, also show similar blueshift properties. The ratio of the line width (measured as both the full width at half maximum and the velocity dispersion) of C IV to that of Mg II increases with blueshift. Quasar variability enhances the connection between the C IV blueshift and quasar properties (e.g., EW). The variability of the Mg II line center (i.e., the wavelength that bisects the cumulative line flux) increases with blueshift. In contrast, the C IV line center shows weaker variability at the extreme blueshifts. Quasars with the high-blueshift C IV lines tend to have less variable continuum emission, when controlling for EW, luminosity, and redshift. Our results support the scenario that high-blueshift sources tend to have large Eddington ratios.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): black hole physics - galaxies: active - quasars: emission lines - quasars: general - surveys

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 PHL 1811 Sy1 21 55 01.5124437432 -09 22 24.349496808   13.9 16.8 14.1   ~ 200 1

Query : 2018ApJ...854..128S

Basic data :
PHL 1811 -- Seyfert 1 Galaxy
Other object types: otypes_help 		Sy1 (), QSO (2016ApJ,QSO,...), AGN (2016AJ), MIR (WISEA,WISE), Q? (FBQS), G ([HSN2016]), * (Gaia), blu (PHL), Rad (FIRST), UV (UVQS), NIR (2MASS), IR (IRAS)
ICRS coord. (ep=J2000) : 		21 55 01.5124437432 -09 22 24.349496808 (Optical) [ 0.0202 0.0184 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		21 52 21.8874960791 -09 36 38.272456708 [ 0.0202 0.0184 90 ]
Gal coord. (ep=J2000) : 		047.4734495128450 -44.8151350608613 [ 0.0202 0.0184 90 ]
Proper motions mas/yr : 		0.029 -0.008 [0.027 0.019 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 52119 [~] / z(emission) 0.192 [~] / cz 57560 [~]
   (Opt) D 2016ApJ...818..113N
Fluxes (7) :
B 13.9 [~] E ~
V 16.8 [~] E ~
R 14.1 [~] D 2007ApJ...663..103L
G 14.063802 [0.003189] C 2020yCat.1350....0G
J 13.480 [0.030] C 2003yCat.2246....0C
H 12.761 [0.030] C 2003yCat.2246....0C
K 11.689 [0.025] C 2003yCat.2246....0C
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Identifiers (17) :
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2MASS J21550150-0922243 QSO J2155-0922 WISE J215501.50-092224.2 Gaia DR2 2617926847748964608
FBQS J2155-0922 QSO B2152-0936 [HSN2016] J328.75-09.37 Gaia DR3 2617926847748964608
FIRST J215501.4-092224 SQUAD DR1 J215501-092224 [VV2003] J215501.4-092224
IRAS F21523-0936 UVQS J215501.51-092224.3 [VV2006] J215501.4-092224
PHL 1811 WISEA J215501.51-092224.3 [VV2010] J215501.4-092224

References (200 between 1850 and 2026) (Total 200)
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 : 3    PM : 2   

   

Observing logs
XMM : 1   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : PHL 1811

Link by name to the catalogue in VizieR :

2MASS J21550150-0922243 FIRST J215501.4-092224 IRAS F21523-0936 PHL 1811 WISEA J215501.51-092224.3
WISE J215501.50-092224.2 Gaia DR2 2617926847748964608 Gaia DR3 2617926847748964608

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