2013A&A...550A..87H


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.14CET19:17:14

2013A&A...550A..87H - Astronomy and Astrophysics, volume 550A, 87-87 (2013/2-1)

The Milky Way halo as a QSO absorption-line system. New results from an HST/STIS absorption-line catalogue of Galactic high-velocity clouds.

HERENZ P., RICHTER P., CHARLTON J.C. and MASIERO J.R.

Abstract (from CDS):

We use archival UV absorption-line data from HST/STIS to statistically analyse the absorption characteristics of the high-velocity clouds (HVCs) in the Galactic halo towards more than 40 extragalactic background sources. We determine absorption covering fractions of low- and intermediate ions (OI, CII, SiII, MgII, FeII, SiIII, CIV, and SiIV) in the range fc=0.20-0.70. For detailed analysis we concentrate on SiII absorption components in HVCs, for which we investigate the distribution of column densities, b-values, and radial velocities. Combining information for SiII and MgII, and using a geometrical HVC model we investigate the contribution of HVCs to the absorption cross section of strong MgII absorbers in the local Universe. We estimate that the Galactic HVCs would contribute on average ∼52 percent to the total strong MgII cross section of the Milky Way, if our Galaxy were to be observed from an exterior vantage point. We further estimate that the mean projected covering fraction of strong MgII absorption in the Milky Way halo and disc from an exterior vantage point is <fc,sMgII≥0.31 for a halo radius of R=61kpc. These numbers, together with the observed number density of strong MgII absorbers at low redshift, indicate that the contribution of infalling gas clouds (i.e., HVC analogues) in the halos of Milky Way-type galaxies to the cross section of strong MgII absorbers is <34 percent. These findings are in line with the idea that outflowing gas (e.g., produced by galactic winds) in the halos of more actively star-forming galaxies dominate the absorption-cross section of strong MgII absorbers in the local Universe.

Abstract Copyright:

Journal keyword(s): ISM: structure - Galaxy: halo - galaxies: halos

Simbad objects: 62

goto Full paper

goto View the reference in ADS

Number of rows : 62

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME Magellanic Stream HVC 00 32 -30.0           ~ 779 1
2 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 10616 1
3 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9141 1
4 QSO B0117+2118 QSO 01 20 17.2644311878 +21 33 46.196835922     16.1     ~ 121 0
5 HVC 224.0-83.4-197 HVC 01 20.7 -28 12           ~ 12 0
6 Ton S 210 QSO 01 21 51.5135355520 -28 20 57.802649318   15.38 15.19     ~ 83 0
7 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1494 2
8 4C -04.06 QSO 02 35 07.3417120791 -04 02 05.319157399   16.61 16.46 16.2   ~ 185 1
9 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5410 1
10 NAME Magellanic Bridge HI 03 11 -77.5           ~ 307 1
11 QSO J0311-7651 BLL 03 11 55.2500768688 -76 51 50.846014733 15.27 16.09 16.10 15.33   ~ 207 1
12 PKS 0405-123 Sy1 04 07 48.4309594137 -12 11 36.660481492   15.09 14.86 14.7   ~ 462 1
13 HE 0515-4414 QSO 05 17 07.6239672230 -44 10 55.578294294 14.74 15.49 15.16     ~ 95 0
14 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14392 1
15 QSO B0624+6907 QSO 06 30 02.5049167075 +69 05 03.912553984   14.64 14.16     ~ 88 0
16 QSO B0747+4259 QSO 07 50 54.6476110802 +42 52 19.234255219   16.43 16.23     ~ 39 0
17 QSO B0810+2554 QSO 08 13 31.2926 +25 45 03.061   16.58 16.18     ~ 72 1
18 [H68] K HVC 09 47 -27.0           ~ 18 0
19 PG 0953+414 Sy1 09 56 52.3930851607 +41 15 22.212153978 14.710 15.611 15.546 15.294 14.720 ~ 404 0
20 Mrk 132 QSO 10 01 29.6441702711 +54 54 38.044836562   16.21 16.02     ~ 122 0
21 Ton 28 Sy1 10 04 02.6101006271 +28 55 35.330362166   16.17 15.7     ~ 140 0
22 NAME HVC Complex M HVC 10 48.2 +48 00           ~ 72 0
23 3C 249 rG 11 02 03.9 -01 16 18           ~ 83 1
24 7C 110025.60+771511.00 Sy1 11 04 13.8613944317 +76 58 58.192391742   15.70 15.72 15.40   ~ 506 1
25 NGC 3516 Sy1 11 06 47.4596406816 +72 34 07.189563769   13.12 12.40     ~ 1392 0
26 Ton 1388 Sy1 11 19 08.6786143504 +21 19 17.986556889   14.91 14.80     ~ 406 0
27 QSO J1130-1449 QSO 11 30 07.05259287 -14 49 27.3881476   17.17 16.90 16 16.97 ~ 614 1
28 NGC 3783 Sy1 11 39 01.7095761008 -37 44 19.008597647   12.46 13.43 11.33 12.1 ~ 1451 0
29 NGC 4051 Sy1 12 03 09.6098828919 +44 31 52.693714606   11.08 12.92 9.94   ~ 1956 1
30 QSO J1208+4540 QSO 12 08 58.0106507296 +45 40 35.422302500   16.00 15.70     ~ 175 0
31 NGC 4151 Sy1 12 10 32.5771747733 +39 24 21.057727323   12.18 11.48     ~ 3318 2
32 PB 3894 Sy1 12 14 17.6737003918 +14 03 13.182526431   14.46 14.19     ~ 725 0
33 PG 1216+069 Sy1 12 19 20.9316038223 +06 38 38.467864632   15.68 15.65     ~ 255 0
34 Mrk 205 Sy1 12 21 44.0723278508 +75 18 38.242986688   15.64 15.24 14.7   ~ 444 0
35 NGC 4395 Sy2 12 25 48.8639154223 +33 32 48.694684028 10.84 10.54 10.11 9.98   ~ 959 1
36 3C 273 BLL 12 29 06.6996828061 +02 03 08.598846466   13.05 14.830 14.11   ~ 5254 1
37 2MASS J12305003+0115226 Sy1 12 30 50.0333182740 +01 15 22.597395500   14.44 14.42     ~ 86 0
38 QSO J1244+1721 QSO 12 44 10.8248623367 +17 21 04.509382201   16.40 16.09     ~ 134 1
39 QSO B1248+401 QSO 12 50 48.3268849448 +39 51 39.459453541   16.62 16.19     ~ 129 0
40 LB 2522 Sy1 13 01 12.9251198286 +59 02 06.693745440   16.04 15.89     ~ 241 0
41 ICRF J130533.0-103319 Sy1 13 05 33.0149111397 -10 33 19.430590671   15.18 15.23 14.46   ~ 479 1
42 Ton 153 QSO 13 19 56.2318070927 +27 28 08.187007779   16.12 15.98     ~ 141 1
43 Mrk 279 Sy1 13 53 03.4356451470 +69 18 29.410672989   15.15 14.46     ~ 677 0
44 NGC 5548 Sy1 14 17 59.5401093128 +25 08 12.600227883   14.35 13.73     ~ 2342 0
45 2MASSI J1446459+403505 Sy1 14 46 45.9392876678 +40 35 05.797848407   16.28 16.11     ~ 259 0
46 Mrk 290 Sy1 15 35 52.4036488201 +57 54 09.516647866   15.55 15.27     ~ 437 0
47 QSO B1630+3744 QSO 16 32 01.1118986024 +37 37 49.980862599   16.50 16.30     ~ 157 0
48 QSO B1634+7037 QSO 16 34 28.9917493918 +70 31 32.394595988   14.90 14.66     ~ 258 0
49 NAME HVC Complex C HVC 16 34.8 +63 07           ~ 226 1
50 HS 1700+6416 QSO 17 01 00.6195618802 +64 12 09.118927057   16.39 16.17     ~ 330 0
51 6C 170404+604844 Sy1 17 04 41.3742389551 +60 44 30.522600868   15.65 15.40 15.30   ~ 718 1
52 QSO J1719+4804 QSO 17 19 38.2496689104 +48 04 12.245390013   15.33 14.60 14.25   ~ 168 1
53 ClG 1821+64 ClG 18 21 56.7276 +64 20 55.841           ~ 490 1
54 2E 4066 Sy1 18 21 57.2365 +64 20 36.226   14.23 14.24     ~ 529 1
55 Mrk 509 Sy1 20 44 09.7504131334 -10 43 24.724854084   13.35 13.12 10.7   ~ 1100 0
56 2MASX J21244166-1744458 Sy1 21 24 41.6402257270 -17 44 45.885457804   17.18 16.50 15.95   ~ 81 0
57 NAME Outer Arm PoG 21 48 +69.4           ~ 206 0
58 QSO J2155-0922 Sy1 21 55 01.5123415724 -09 22 24.351917710   13.9 16.8 14.1   ~ 153 0
59 QSO B2155-304 BLL 21 58 52.0651817803 -30 13 32.120657891   13.36 13.09 12.62   ~ 1522 1
60 UGC 12163 Sy1 22 42 39.3364258078 +29 43 31.301194419   14.86 14.16     ~ 603 1
61 NGC 7469 Sy1 23 03 15.674 +08 52 25.28 12.60 13.00 12.34     ~ 1849 3
62 NAME Local Group GrG ~ ~           ~ 6701 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2013A&A...550A..87H and select 'bookmark this link' or equivalent in the popup menu


2019.12.14-19:17:14

© Université de Strasbourg/CNRS

    • Contact