2015ApJ...811..132M


C.D.S. - SIMBAD4 rel 1.7 - 2020.11.30CET23:17:20

2015ApJ...811..132M - Astrophys. J., 811, 132 (2015/October-1)

An extreme metallicity, large-scale outflow from a star-forming galaxy at z ∼ 0.4.

MUZAHID S., KACPRZAK G.G., CHURCHILL C.W., CHARLTON J.C., NIELSEN N.M., MATHES N.L. and TRUJILLO-GOMEZ S.

Abstract (from CDS):

We present a detailed analysis of a large-scale galactic outflow in the circumgalactic medium of a massive (), star-forming (/yr), sub-L*() galaxy at z = 0.39853 that exhibits a wealth of metal-line absorption in the spectra of the background quasar Q 0122-003 at an impact parameter of 163 kpc. The galaxy inclination angle () and the azimuthal angle () imply that the QSO sightline is passing through the projected minor-axis of the galaxy. The absorption system shows a multiphase, multicomponent structure with ultra-strong, wide velocity spread ( 419 km/s) and ( 285 km/s) lines that are extremely rare in the literature. The highly ionized absorption components are well explained as arising in a low density (/cm3), diffuse (∼10 kpc), cool (∼104 K) photoionized gas with a super-solar metallicity (). From the observed narrowness of the Lyβ profile, the non-detection of absorption, and the presence of strong absorption in the low-resolution FOS spectrum, we rule out equilibrium/non-equilibrium collisional ionization models. The low-ionization photoionized gas with a density of/cm3 and a metallicity of is possibly tracing recycled halo gas. We estimate an outflow mass of a mass-flow rate of a kinetic luminosity of erg/s, and a mass loading factor of ∼8 for the outflowing high-ionization gas. These are consistent with the properties of ''down-the-barrel'' outflows from infrared-luminous starbursts as studied by Rupke et al. Such powerful, large-scale, metal-rich outflows are the primary means of sufficient mechanical and chemical feedback as invoked in theoretical models of galaxy formation and evolution.

Abstract Copyright:

Journal keyword(s): galaxies: formation - galaxies: halos - quasars: absorption lines

Nomenclature: Table 3: [MKC2015] Q 0122-003GN (Nos G1-G7).

Simbad objects: 19

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Number of rows : 19

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 LBQS 0107-0235 QSO 01 10 13.1605010207 -02 19 52.838365692   18.39 17.80 17.61   ~ 75 1
2 QSO J0110-0218 QSO 01 10 16.2699632294 -02 18 50.763174832   17.4 17.3     ~ 55 1
3 [CLW98] 0122-0021 -00168+00248 G 01 25 27.670 -00 05 31.39       19.4   ~ 6 0
4 [MKC2015] Q 0122-003G4 G 01 25 27.91 -00 05 53.0       22.3   ~ 1 0
5 [MKC2015] Q 0122-003G2 G 01 25 28.210 -00 05 54.64       22.2   ~ 2 0
6 [MKC2015] Q 0122-003G3 G 01 25 28.260 -00 06 08.20   20.60   20.4   ~ 8 0
7 [KSS94] J012528.9-000556 17 G 01 25 28.270 -00 06 23.03       19.5   ~ 3 0
8 QSO J0125-0005 QSO 01 25 28.8436590768 -00 05 55.930666802   16.92 16.64 16.30   ~ 261 1
9 [MKC2015] Q 0122-003G1 G 01 25 29.290 -00 05 43.13       21.5   ~ 1 0
10 [CLW98] 0122-0021 +00270-00372 G 01 25 30.680 -00 06 32.43       20.3   ~ 4 0
11 QSO B0237-2322 QSO 02 40 08.1742481040 -23 09 15.727160394   16.78 16.63     ~ 477 0
12 QSO J0311-7651 BLL 03 11 55.2500768688 -76 51 50.846014733 15.27 16.09 16.10 15.33   ~ 209 1
13 PKS 0405-123 Sy1 04 07 48.4309594137 -12 11 36.660481492   15.09 14.86 14.7   ~ 472 1
14 QSO B0528-2505 QSO 05 30 07.96279681 -25 03 29.8994010   18.17 17.34 17.7   ~ 398 0
15 QSO J1009+0713 QSO 10 09 02.0698 +07 13 43.810   17.41 17.27     ~ 57 0
16 Feige 34 HS* 10 39 36.7377085527 +43 06 09.209752646 9.613 10.91 11.14 11.319 11.464 sdOp 612 0
17 QSO J1208+4540 QSO 12 08 58.0106507296 +45 40 35.422302500   16.00 15.70     ~ 179 0
18 [VV98] J134328.8+572148 BLL 13 43 28.7195354219 +57 21 47.063797890   18.28 18.05     ~ 41 1
19 QSO B1603+3820 QSO 16 04 55.4000146242 +38 12 01.628038791   16.37 15.99     ~ 47 0

    Equat.    Gal    SGal    Ecl

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2020.11.30-23:17:20

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