2010ApJ...724L.176C

Query : 2010ApJ...724L.176C

2010ApJ...724L.176C - Astrophys. J., 724, L176-L182 (2010/December-1)

What determines the incidence and extent of mg II absorbing gas around galaxies?

CHEN H.-W., WILD V., TINKER J.L., GAUTHIER J.-R., HELSBY J.E., SHECTMAN S.A. and THOMPSON I.B.

Abstract (from CDS):

We study the connections between ongoing star formation, galaxy mass, and extended halo gas, in order to distinguish between starburst-driven outflows and infalling clouds that produce the majority of observed Mg II absorbers at large galactic radii (≳10 h–1 kpc) and to gain insights into halo gas contents around galaxies. We present new measurements of total stellar mass (Mstar), Hα emission line strength (EW(Hα)), and specific star formation rate (sSFR) for the 94 galaxies described by Chen et al.'s 2010 paper. We find that the extent of Mg II absorbing gas,, scales with Mstar and sSFR, following. The strong dependence of on Mstar is most naturally explained, if more massive galaxies possess more extended halos of cool gas and the observed Mg II absorbers arise in infalling clouds which will subsequently fuel star formation in the galaxies. The additional scaling relation of with sSFR can be understood either as accounting for extra gas supplies due to starburst outflows or as correcting for suppressed cool gas content in high-mass halos. The latter is motivated by the well-known sSFR-Mstar inverse correlation in field galaxies. Our analysis shows that a joint study of galaxies and Mg II absorbers along common sight lines provides an empirical characterization of halo gaseous radius versus halo mass. A comparison study of around red- and blue-sequence galaxies may provide the first empirical constraint for resolving the physical origin of the observed sSFR-Mstar relation in galaxies.

Abstract Copyright: ∼

Journal keyword(s): cosmology: observations - galaxies: halos - intergalactic medium - quasars: absorption lines

VizieR on-line data: <Available at CDS (J/ApJ/724/L176): table1.dat>

Simbad objects: 92

goto Full paper

goto View the references in ADS

Number of rows : 92
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 J003339.66-005518.3 G 00 33 39.6621850176 -00 55 18.344472708           ~ 3 0
2 SDSS J003339.85-005522.3 G 00 33 39.851 -00 55 22.21   19.44       ~ 7 0
3 SDSS J003341.47-005522.8 G 00 33 41.475 -00 55 22.82           ~ 3 0
4 SDSS J003407.77-085453.2 G 00 34 07.778 -08 54 53.28   22.41       ~ 5 0
5 SDSS J003412.84-010019.8 G 00 34 12.848 -01 00 19.81   21.68       ~ 5 0
6 SDSS J003414.49-005927.5 G 00 34 14.4925488816 -00 59 27.581722800           ~ 4 0
7 SDSS J010136.51-005016.4 G 01 01 36.5184765384 -00 50 16.597180176   20.91       ~ 5 0
8 SDSS J010155.80-084408.7 G 01 01 55.802 -08 44 08.75   21.08       ~ 5 0
9 SDSS J010351.82+003740.7 G 01 03 51.821 +00 37 40.75   22.59       ~ 5 0
10 SDSS J021558.84-011131.2 G 02 15 58.8490455744 -01 11 31.345589688   20.13       ~ 5 0
11 SDSS J022949.96-074255.8 G 02 29 49.969 -07 42 55.89   22.08       ~ 5 0
12 SDSS J024127.74-004517.0 G 02 41 27.7452849192 -00 45 17.025634656           ~ 4 0
13 SDSS J032230.27+003712.7 G 03 22 30.273 +00 37 12.71           ~ 3 0
14 SDSS J032232.55+003644.6 G 03 22 32.550 +00 36 44.67   22.48       ~ 5 0
15 SDSS J035241.99+001317.1 G 03 52 41.996 +00 13 17.13   22.54       ~ 5 0
16 SDSS J040404.51-060709.4 G 04 04 04.515 -06 07 09.44           ~ 3 0
17 SDSS J074527.21+192003.8 G 07 45 27.213 +19 20 03.85           ~ 3 0
18 SDSS J075001.33+161301.9 G 07 50 01.336 +16 13 01.90   21.30       ~ 5 0
19 SDSS J075450.10+185005.2 G 07 54 50.104 +18 50 05.27   21.25       ~ 5 0
20 SDSS J075525.13+172825.7 G 07 55 25.132 +17 28 25.78   20.57       ~ 5 0
21 SDSS J080005.11+184933.2 G 08 00 05.114 +18 49 33.28   20.76       ~ 5 0
22 SDSS J082340.55+074751.0 G 08 23 40.5603447168 +07 47 51.063370116   19.74       ~ 5 0
23 SDSS J083218.54+043337.7 G 08 32 18.5506240416 +04 33 37.789213644           ~ 3 0
24 SDSS J083218.75+043346.5 G 08 32 18.7631589384 +04 33 46.596260988           ~ 3 0
25 SDSS J083221.59+043359.7 G 08 32 21.590 +04 33 59.72           ~ 3 0
26 SDSS J084120.58+012628.8 G 08 41 20.589 +01 26 28.85   21.51       ~ 7 0
27 SDSS J084455.57+004718.1 G 08 44 55.596 +00 47 18.16   19.71       ~ 9 0
28 SDSS J085829.88+022616.0 G 08 58 29.890 +02 26 16.05   19.34       ~ 6 0
29 SDSS J090519.02+084933.6 G 09 05 19.021 +08 49 33.68   21.66       ~ 5 0
30 SDSS J090519.61+084932.2 G 09 05 19.615 +08 49 32.20   21.91       ~ 5 0
31 SDSS J091845.09+060202.9 G 09 18 45.1016980584 +06 02 02.963365332   19.98       ~ 5 0
32 SDSS J091845.69+060220.5 G 09 18 45.697 +06 02 20.54           ~ 3 0
33 SDSS J093252.23+073731.5 G 09 32 52.239 +07 37 31.59   21.42       ~ 5 0
34 SDSS J093537.23+112410.6 G 09 35 37.239 +11 24 10.65   21.35       ~ 5 0
35 SDSS J100807.62+014443.3 G 10 08 07.624 +01 44 43.36           ~ 1 0
36 SDSS J100810.59+014446.1 G 10 08 10.597 +01 44 46.15   19.006   17.787   ~ 6 0
37 SDSS J100906.92+023557.8 G 10 09 06.9237567528 +02 35 57.815903436   20.70       ~ 5 0
38 SDSS J102220.70+013143.5 G 10 22 20.7080091864 +01 31 43.470697692   19.064   17.656   ~ 7 0
39 SDSS J103605.25+015654.8 G 10 36 05.254 +01 56 54.90   20.00       ~ 5 0
40 SDSS J103836.38+095143.6 G 10 38 36.389 +09 51 43.66   21.26       ~ 5 0
41 SDSS J112016.64+093317.9 G 11 20 16.642 +09 33 17.92   21.67       ~ 5 0
42 SDSS J113756.74+085022.3 G 11 37 56.747 +08 50 22.35   21.76       ~ 5 0
43 SDSS J114144.82+080554.0 G 11 41 44.829 +08 05 54.09   20.12       ~ 6 0
44 SDSS J114145.15+080605.2 G 11 41 45.151 +08 06 05.27   21.24       ~ 6 0
45 SDSS J114830.93+021807.9 G 11 48 30.936 +02 18 07.92           ~ 3 0
46 SDSS J120931.60+004546.2 G 12 09 31.602 +00 45 46.24   21.86       ~ 5 0
47 SDSS J121347.08+000141.2 G 12 13 47.084 +00 01 41.26           ~ 3 0
48 SDSS J121347.14+000136.6 G 12 13 47.1431734656 +00 01 36.683767704           ~ 5 0
49 SDSS J122115.83-020259.3 G 12 21 15.8466054024 -02 02 59.608542408           ~ 3 0
50 SDSS J130555.48+014928.6 G 13 05 55.487 +01 49 28.62   20.30       ~ 5 0
51 2dFGRS TGN395Z184 BiC 13 05 57.0432372024 +01 49 22.294997580   19.196   17.737   ~ 7 0
52 SDSS J132757.22+101135.9 G 13 27 57.228 +10 11 35.97   21.63       ~ 5 0
53 SDSS J132829.30+080003.1 G 13 28 29.305 +08 00 03.16           ~ 3 0
54 SDSS J132830.61+080005.2 G 13 28 30.616 +08 00 05.21           ~ 3 0
55 SDSS J132831.14+075923.8 G 13 28 31.140 +07 59 23.89           ~ 3 0
56 SDSS J132831.54+075942.9 G 13 28 31.543 +07 59 42.99   20.64       ~ 5 0
57 SDSS J132832.73+075952.5 G 13 28 32.731 +07 59 52.54   20.15       ~ 5 0
58 SDSS J133905.85+002225.3 G 13 39 05.8528835568 +00 22 25.451597532           ~ 4 0
59 SDSS J140618.34+130143.6 G 14 06 18.3430448520 +13 01 43.644970812   19.07       ~ 6 0
60 SDSS J140619.93+130105.2 G 14 06 19.933 +13 01 05.24   20.65       ~ 5 0
61 LEDA 1146654 G 14 26 00.0423686520 -00 18 18.072264420   17.747   16.173   ~ 11 0
62 SDSS J143216.96+095522.2 G 14 32 16.968 +09 55 22.20   21.89       ~ 5 0
63 SDSS J150339.61+064235.0 G 15 03 39.614 +06 42 35.03   21.09       ~ 5 0
64 SDSS J150340.14+064308.1 G 15 03 40.148 +06 43 08.10   21.80       ~ 5 0
65 SDSS J151228.24-011216.1 G 15 12 28.248 -01 12 16.10   19.88       ~ 5 0
66 SDSS J153112.76+091119.7 G 15 31 12.765 +09 11 19.73   22.02       ~ 5 0
67 SDSS J153113.00+091127.0 G 15 31 13.008 +09 11 27.02   22.03       ~ 5 0
68 SDSS J153715.67+023056.4 G 15 37 15.672 +02 30 56.40   20.27       ~ 5 0
69 SDSS J153717.42+023026.4 G 15 37 17.421 +02 30 26.46           ~ 2 0
70 SDSS J155336.77+053438.2 G 15 53 36.772 +05 34 38.23   20.41       ~ 5 0
71 SDSS J155556.55-003615.5 G 15 55 56.550 -00 36 15.56   21.81       ~ 5 0
72 SDSS J160749.52-002228.4 G 16 07 49.525 -00 22 28.41   21.34       ~ 5 0
73 SDSS J160906.34+071330.6 G 16 09 06.348 +07 13 30.66   20.10       ~ 5 0
74 SDSS J204303.54-010139.0 G 20 43 03.540 -01 01 39.05   19.49       ~ 5 0
75 SDSS J204304.34-010137.9 G 20 43 04.347 -01 01 37.91   20.44       ~ 5 0
76 SDSS J204431.32+011304.9 G 20 44 31.3192598400 +01 13 04.958604192           ~ 3 0
77 SDSS J204431.86+011308.8 G 20 44 31.862 +01 13 08.81           ~ 3 0
78 SDSS J210230.87+094121.0 G 21 02 30.870 +09 41 21.07   22.30       ~ 5 0
79 SDSS J212938.97-063758.7 G 21 29 38.976 -06 37 58.78   22.29       ~ 5 0
80 SDSS J221126.42+124459.9 G 22 11 26.420 +12 44 59.92   22.33       ~ 5 0
81 SDSS J221526.04+011353.7 G 22 15 26.049 +01 13 53.78 22.5169 21.35     19.8275 ~ 8 0
82 SDSS J221526.88+011347.2 G 22 15 26.889 +01 13 47.20   22.06       ~ 5 0
83 SDSS J222849.01-005640.0 G 22 28 49.013 -00 56 40.06           ~ 3 0
84 SDSS J223246.44+134655.3 G 22 32 46.441 +13 46 55.37   20.41       ~ 5 0
85 SDSS J223316.35+133315.3 G 22 33 16.353 +13 33 15.39   19.82       ~ 5 0
86 SDSS J223359.74-003320.8 G 22 33 59.740 -00 33 20.81   20.70       ~ 5 0
87 SDSS J224704.01-081601.0 G 22 47 04.015 -08 16 01.00   21.23       ~ 5 0
88 SDSS J230225.06-082156.6 G 23 02 25.062 -08 21 56.62   21.90       ~ 5 0
89 SDSS J230225.17-082159.0 G 23 02 25.173 -08 21 59.03           ~ 3 0
90 SDSS J230845.53-091445.9 G 23 08 45.532 -09 14 45.96   21.42       ~ 5 0
91 SDSS J232812.79-090603.7 G 23 28 12.791 -09 06 03.73           ~ 3 0
92 SDSS J234949.41+003542.3 G 23 49 49.414 +00 35 42.32   21.71       ~ 5 0

To bookmark this query, right click on this link: simbad:objects in 2010ApJ...724L.176C and select 'bookmark this link' or equivalent in the popup menu