2017MNRAS.466.3600B

Query : 2017MNRAS.466.3600B

2017MNRAS.466.3600B - Mon. Not. R. Astron. Soc., 466, 3600-3611 (2017/April-2)

Low-redshift quasars in the SDSS Stripe 82: associated companion galaxies and signature of star formation.

BETTONI D., FALOMO R., KOTILAINEN J.K. and KARHUNEN K.

Abstract (from CDS):

We obtained optical spectroscopy of close (<80 kpc) companion objects of a sample of 12 low-redshift quasars (z < 0.3) selected from the SDSS Stripe82 area and that are in the subsample of 52 QSOs for which both multicolour host galaxies properties and galaxy environment were recently investigated in detail. We found that for 8 out of 12 sources the companion galaxy is associated with the QSO having a difference of radial velocity that is less than 400 km s–1. Many of these associated companions exhibit [OII] λ3727 Å emission lines suggestive of episodes of (recent) star formation possibly induced by past interactions. The star formation rate of the companion galaxies as derived from [O II] line luminosity is, however, modest, with a median value of 1.0 ± 0.8 M☉ yr–1, and the emission lines are barely consistent with expectation from gas ionization by the QSO. The role of the QSO for inducing star formation in close companion galaxies appears meager. For three objects we also detect the starlight spectrum of the QSO host galaxy, which is characterized by absorption lines of old stellar population and [O II] emission line.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: active - galaxies: evolution - galaxies: nuclei - quasars: general - quasars: general

Simbad objects: 33

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Number of rows : 33
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 SDSS J000557.04+002842.2 G 00 05 57.044 +00 28 42.25           ~ 1 0
2 LBQS 0003+0011 QSO 00 05 57.2512511496 +00 28 37.801781328   19.04 18.80     ~ 39 0
3 SDSS J002830.16-000405.8 G 00 28 30.155 -00 04 05.63           ~ 2 0
4 SDSS J002831.36-000409.9 G 00 28 31.368 -00 04 09.86           ~ 2 0
5 SDSS J002831.40-000400.8 G 00 28 31.405 -00 04 00.85           ~ 3 0
6 SDSS J002831.57-000332.7 G 00 28 31.574 -00 03 32.75           ~ 1 0
7 FIRST J002831.8-000412 Sy1 00 28 31.7155349520 -00 04 13.247355684   18.65 18.24     ~ 36 0
8 Mrk 1014 Sy1 01 59 50.2534701768 +00 23 40.864244784   16.08 15.87     ~ 606 0
9 SDSS J015951.11+002342.8 G 01 59 51.116 +00 23 42.80           ~ 1 0
10 SDSS J021358.87+004221.3 G 02 13 58.876 +00 42 21.38           ~ 1 0
11 PB 6760 Sy1 02 13 59.7914369184 +00 42 26.743923504   18.12 17.65     ~ 57 0
12 2SLAQ J025333.76+000125.2 G 02 53 33.765 +00 01 25.23           ~ 2 0
13 2SLAQ J025334.57+000108.3 Sy1 02 53 34.5849903072 +00 01 08.273374032   19.16 18.51     ~ 37 0
14 SDSS J025336.01+000045.6 G 02 53 36.017 +00 00 45.61           ~ 1 0
15 PB 7009 Sy1 03 06 39.5824276346 +00 03 43.161393991   18.00 17.54     ~ 79 0
16 SDSS J030642.89+000409.6 G 03 06 42.8945887752 +00 04 09.695589600           ~ 1 0
17 2SLAQ J033651.52-001024.7 Sy1 03 36 51.5244529320 -00 10 24.747875040   19.12 18.64     ~ 30 0
18 SDSS J033652.31-001019.8 G 03 36 52.318 -00 10 19.81           ~ 1 0
19 2SLAQ J211234.88-005926.8 Sy1 21 12 34.8767738304 -00 59 26.858271192   18.86 18.44     ~ 33 0
20 SDSS J211235.08-005935.7 G 21 12 35.0817154680 -00 59 35.703937968           ~ 1 0
21 SDSS J211235.72-005958.9 G 21 12 35.7176817840 -00 59 58.872135876           ~ 1 0
22 SDSS J211832.62+004505.4 G 21 18 32.6269859952 +00 45 05.326820928           ~ 1 0
23 2SLAQ J211832.76+004500.8 Sy1 21 18 32.7596630016 +00 45 00.847407240   18.82 18.47     ~ 30 0
24 2MASS J21574421+0053037 QSO 21 57 44.1867829368 +00 53 03.641048268   18.75 18.49     ~ 20 0
25 SDSS J215744.26+005313.8 G 21 57 44.262 +00 53 13.81           ~ 1 0
26 SDSS J222632.27-005735.3 G 22 26 32.2699181688 -00 57 35.372052504           ~ 1 0
27 SDSS J222632.40-005739.8 G 22 26 32.407 -00 57 39.88           ~ 4 0
28 SDSS J222632.46-005726.3 G 22 26 32.4615041280 -00 57 26.371473696           ~ 1 0
29 2MASS J22263267-0057177 Sy1 22 26 32.6658577968 -00 57 17.723519604   18.18 17.84     ~ 27 0
30 SDSS J231710.52-003603.8 G 23 17 10.527 -00 36 03.88           ~ 1 0
31 2MASS J23171178-0036036 Sy1 23 17 11.7957515760 -00 36 03.701783448   18.42 18.07     ~ 40 0
32 SDSS J231711.95-003555.8 G 23 17 11.957 -00 35 55.90           ~ 3 0
33 SDSS J231712.12-003603.5 G 23 17 12.1276265712 -00 36 03.502506384           ~ 1 0

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