2024ApJ...968...49W

Query : 2024ApJ...968...49W

2024ApJ...968...49W - Astrophys. J., 968, 49 (2024/June-3)

The SDSS-V Black Hole Mapper Reverberation Mapping Project: C IV Broad Absorption Line Acceleration in the Quasar SBS 1408+544.

WHEATLEY R., GRIER C.J., HALL P.B., BRANDT W.N., LOTZ J., SCHNEIDER D.P., TRUMP J.R., SHEN Y., SEATON L.M., ANDERSON S.F., TEMPLE M.J., ASSEF R., FRIES L.B., HOMAYOUNI Y., KAKKAD D., KOEKEMOER A.M., MARTINEZ-ALDAMA M.L., NEGRETE C.A., RICCI C., BIZYAEV D., BROWNSTEIN J.R., MORRISON S. and PAN K.

Abstract (from CDS):

We present the results of an investigation of a highly variable C IV broad absorption line (BAL) feature in spectra of the quasar SBS 1408+544 (z = 2.337) that shows a significant shift in velocity over time. This source was observed as a part of the Sloan Digital Sky Survey (SDSS) Reverberation Mapping project and the SDSS-V Black Hole Mapper Reverberation Mapping project, and has been included in two previous studies, both of which identified significant variability in a high-velocity C IV BAL on timescales of just a few days in the quasar rest frame. Using ∼130 spectra acquired over 8 yr of spectroscopic monitoring with SDSS, we have determined that this BAL is not only varying in strength, but is also systematically shifting to higher velocities. Using cross-correlation methods, we measure the velocity shifts (and corresponding acceleration) of the BAL over a wide range of timescales, measuring an overall velocity shift of ${\rm{\Delta }}v=-{683}_{-84}^{+89}$ km s–1 over the 8 yr monitoring period. This corresponds to an average rest-frame acceleration of a = 1.04${}_{-0.13}^{+0.14}$ cm s–2, though the magnitude of the acceleration on shorter timescales is not constant throughout. We place our measurements in the context of BAL-acceleration models and examine various possible causes of the observed velocity shift.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Broad-absorption line quasar - Quasars - Active galactic nuclei

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 SBSG 1408+544A QSO 14 10 07.7399742408 +54 12 03.410924328   18.33 18.17     ~ 38 0

Query : 2024ApJ...968...49W

Basic data :
SBSG 1408+544A -- Quasar
Other object types: otypes_help 		QSO (2010A&A,QSO,...), Rad (2019A&A,ILT), AGN (2020ApJS), G (SBSG), * (Gaia), NIR (2MASS), Opt (SDSS)
ICRS coord. (ep=J2000) : 		14 10 07.7399742408 +54 12 03.410924328 (Optical) [ 0.0836 0.0925 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		14 08 23.7077642451 +54 26 10.169983144 [ 0.0836 0.0925 90 ]
Gal coord. (ep=J2000) : 		100.2291638757151 +59.3214213843885 [ 0.0836 0.0925 90 ]
Proper motions mas/yr : 		0.026 -0.060 [0.097 0.118 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 250467 [~] / z(spectroscopic) 2.340000 [~] / cz 701514.35 [~]
   (Opt) D 2018A&A...613A..51P
Parallaxes (mas): 		0.1602 [0.1108] A 2020yCat.1350....0G
Fluxes (11) :
B 18.33 [~] D 2010A&A...518A..10V
V 18.17 [~] D 2010A&A...518A..10V
G 18.172132 [0.003511] C 2020yCat.1350....0G
J 17.122 [0.200] D 2003yCat.2246....0C
H 16.170 [0.197] D 2003yCat.2246....0C
K 15.328 [0.169] D 2003yCat.2246....0C
u (AB) 19.1786 [0.0244] C 2020ApJS..250....8L
g (AB) 18.3857 [0.0141] C 2020ApJS..250....8L
r (AB) 18.2453 [0.0136] C 2020ApJS..250....8L
i (AB) 18.1205 [0.0143] C 2020ApJS..250....8L
z (AB) 17.8308 [0.0218] C 2020ApJS..250....8L
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Identifiers (14) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

QSO B1408+544 SDSS J141007.73+541203.4 [VV2003] J141007.8+541204 Gaia DR3 1609126127559834368
ILT J141007.72+541203.2 SDSS J141007.72+541203.6 [VV2006] J141007.8+541204 Gaia DR2 1609126127559834368
2MASS J14100776+5412032 TIC 441690340 [VV2010] J141007.8+541204
SBSG 1408+544A [VV2000] J141007.8+541204 [VV98] J141007.8+541204

References (38 between 1850 and 2026) (Total 38)
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 : 2    PM : 2   

   

External archives :

Data at NED - NASA/IPAC Extragalactic Database : SBSG 1408+544A

Link by name to the catalogue in VizieR :

2MASS J14100776+5412032 SDSS J141007.73+541203.4 SDSS J141007.72+541203.6 Gaia DR3 1609126127559834368 Gaia DR2 1609126127559834368

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