2020ApJ...897..151F

Query : 2020ApJ...897..151F

2020ApJ...897..151F - Astrophys. J., 897, 151-151 (2020/July-2)

Evidence for a rotational component in the circumgalactic medium of nearby galaxies.

FRENCH D.M. and WAKKER B.P.

Abstract (from CDS):

We present results of a study comparing the relative velocity of Lyα absorbers to the rotation velocity of nearby galaxy disks in the local universe (z <= 0.03). We have obtained rotation curves via long-slit spectroscopy of eight galaxies with the Southern African Large Telescope, and combine this data set with an additional 16 galaxies with data from the literature. Each galaxy appears within 3Rvir of a QSO sightline with archival Cosmic Origin Spectrograph spectra. We study the velocity orientation of absorbers with respect to nearby galaxy's rotation, and compare with results from both the Steidel et al. monolithic halo model and a new cylindrical Navarro-Frenk-White galaxy halo model to interpret these data in the context of probing 3D galaxy halos via 1D QSO absorption-line spectroscopy. Relative to these models, we find that up to 59% ± 5% of Lyα absorbers have velocities consistent with corotation. We find the Lyα corotation fraction to decrease with galaxy luminosity (L*) and impact parameter in a model-independent fashion. We report that both anti-rotating absorbers and those found near luminous galaxies (L >= 0.5L*) mostly have low Doppler b-parameters (b <= 50 km s–1). Absorbers consistent with corotation show a wide range of Doppler b-parameters. Finally, we find a strong anticorrelation between corotation fraction and galaxy inclination, which is at odds with recent metal-line kinematic studies and suggests the kinematic and geometric distribution of the circumgalactic medium is complex and multiphase.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Galaxy rotation curves - Galaxy evolution - Galaxy accretion - Circumgalactic medium - Intergalactic medium - Quasar absorption line spectroscopy - Galaxy formation - Extragalactic astronomy

Simbad objects: 68

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Number of rows : 68
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 NGC 7817 H2G 00 03 58.899 +20 45 08.42   12.86 11.94 11.30 10.27 ~ 170 1
2 Mrk 335 Sy1 00 06 19.5372339024 +20 12 10.617404076   14.19 13.85     ~ 1344 0
3 NGC 1097 LIN 02 46 19.059 -30 16 29.68 10.46 9.97 9.48 8.72 9.8 ~ 1448 3
4 2MASS J08105865+7602424 Sy1 08 10 58.6641543864 +76 02 42.450451260   15.03 14.71     ~ 508 0
5 Z 349-18 AG? 08 11 36.755 +76 25 18.26   13.5       ~ 51 0
6 2MASS J09083877+3246202 Sy1 09 08 38.7849681840 +32 46 20.163003348   18.81 18.45     ~ 21 0
7 Ton 1009 QSO 09 09 06.1817119320 +32 36 30.196836540   17.55 17.38     ~ 37 0
8 NGC 2770B GiP 09 09 19.6 +33 07 19   17       ~ 12 0
9 NGC 2770 GiG 09 09 33.622 +33 07 24.29   12.1       ~ 285 0
10 NGC 2770C BiC 09 09 46.779 +33 08 34.68           ~ 7 1
11 Ton 1015 BLL 09 10 37.0353299208 +33 29 24.418940568   16.19 15.71 15.9   ~ 100 2
12 2MASS J09105284+3330078 Sy1 09 10 52.8474249432 +33 30 07.986853044   17.41 17.06     ~ 12 0
13 SDSS J091127.27+325336.9 Sy1 09 11 27.2704225032 +32 53 36.917162124   19.02 18.73     ~ 24 0
14 Ton 469 Bla 09 58 20.9496221568 +32 24 02.208417372   15.88 15.78 15.51   ~ 442 1
15 NGC 3067 GiG 09 58 21.0726714528 +32 22 12.012636108   12.7       ~ 255 1
16 QSO J0959+3203 QSO 09 59 14.8561307520 +32 03 57.315376728   17.29 17.22     ~ 32 0
17 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1284 1
18 2MASSI J1017309+470225 Sy1 10 17 30.9755845296 +47 02 25.012148676   17.82 17.62     ~ 39 0
19 LEDA 3464554 AG? 10 18 48.780 +45 21 37.08           ~ 5 0
20 NGC 3198 EmG 10 19 54.990 +45 32 58.88 10.83 10.87 10.33     ~ 946 1
21 [VV2006] J104335.9+115129 QSO 10 43 35.8739240952 +11 51 29.075414832   16.53 16.35     ~ 32 0
22 M 95 GiP 10 43 57.7313485800 +11 42 13.301191332 10.71 10.51 9.73 9.48   ~ 1238 2
23 NAME M 96 Group GrG 10 46 45 +11 49.1           ~ 330 0
24 2MASS J10520559+3640395 QSO 10 52 05.5794926232 +36 40 39.715939272   17.22 17.11     ~ 29 0
25 MCG+06-24-027 AG? 10 52 16.7441632824 +36 35 40.255197540   17       ~ 31 0
26 NGC 3432 AG? 10 52 31.132 +36 37 07.60   11.81 11.67 11.29   ~ 321 1
27 2MASS J10541620+3511243 Sy1 10 54 16.1936551848 +35 11 24.180910368   17.36 17.08     ~ 36 0
28 2MASX J11144367+5258338 Sy1 11 14 43.6581189984 +52 58 34.285419660   17.04 16.60     ~ 21 0
29 2MASS J11174048+5301510 Sy1 11 17 40.4927153160 +53 01 51.253748688   17.72 17.52     ~ 37 0
30 [VV2006] J111948.0+520554 QSO 11 19 47.9477972928 +52 05 52.961575020   17.72 17.55     ~ 34 0
31 NGC 3633 AG? 11 20 26.2369091784 +03 35 07.894295520   14.45       ~ 85 2
32 NGC 3631 AG? 11 21 02.8871865144 +53 10 10.415331660   11.0       ~ 385 1
33 2MASS J11211423+0325466 Sy1 11 21 14.2212988224 +03 25 46.741703592   17.83 17.57     ~ 43 0
34 Z 39-137 G 11 21 26.9643823320 +03 26 41.693439516   15.4       ~ 18 0
35 NGC 3666 GiG 11 24 26.0692042488 +11 20 31.397824824   12.5       ~ 161 0
36 2MASS J11243943+1131173 BLL 11 24 39.4292679096 +11 31 17.261815908   18.98 18.36     ~ 21 0
37 [VV2006] J112448.3+531818 QSO 11 24 48.2922649632 +53 18 18.850972536   18.18 18.07     ~ 27 0
38 Z 268-36 GiC 11 26 40.4656762968 +53 44 48.012539280   14.5       ~ 164 0
39 NGC 4529 GiC 12 31 42.366 +20 28 53.92   15.6       ~ 33 0
40 Z 99-79 Sy1 12 32 03.6223710000 +20 09 29.495834136   15.57 15.30     ~ 526 0
41 2MASS J12360401+2641358 Sy1 12 36 04.0249656696 +26 41 35.938231476   18.15 17.85     ~ 35 0
42 NGC 4565 Sy2 12 36 20.804 +25 59 14.61   13.61 12.43     ~ 991 0
43 LB 2522 Sy1 13 01 12.9250750776 +59 02 06.693816732   16.04 15.89     ~ 298 0
44 Z 294-10 AG? 13 02 08.046 +58 42 02.04   14.6       ~ 85 0
45 NGC 4939 Sy2 13 04 14.3280524928 -10 20 22.300454724   14.81 13.80 10.92   ~ 332 1
46 QSO J1305-1033 Bla 13 05 33.0150535680 -10 33 19.430383680   15.18 15.23 14.46   ~ 624 1
47 NGC 5786 GiG 14 58 56.254 -42 00 48.27   12       ~ 51 0
48 QSO J1503-4152 QSO 15 03 34.0040298864 -41 52 23.469745116   18.49 18.29     ~ 16 0
49 NAME Ursa Major Cluster ClG 15 08.8 +67 07           ~ 424 1
50 Z 21-28 GiG 15 10 16.882 +01 55 59.88   15.0   13.55   ~ 62 0
51 [MTT2005] N5846-317 GiG 15 11 21.638 +01 36 37.70       16.87   ~ 6 0
52 Z 21-41 GiP 15 12 02.18989 +01 41 51.3104   14.6   15.62 14.1 ~ 73 0
53 LEDA 1199418 GiP 15 12 08.2234855488 +01 35 09.301854192       16.75   ~ 11 0
54 2MASS J15123716+0128461 Sy1 15 12 37.1570017992 +01 28 46.082995284   18.32 18.01     ~ 30 0
55 LEDA 1200646 AG? 15 12 41.388 +01 37 23.78           ~ 10 0
56 NGC 5906 GiG 15 15 53.687 +56 19 43.86   11.4       ~ 807 0
57 LEDA 2531253 Sy1 15 29 07.4560860072 +56 16 06.729661596   16.90 16.74     ~ 47 0
58 LEDA 3096433 Sy2 15 33 14.2852150176 +15 01 03.054807804   17.97 17.58     ~ 24 0
59 NGC 5951 GiG 15 33 43.070 +15 00 26.26   13.8       ~ 121 0
60 Mrk 876 Sy1 16 13 57.1795021224 +65 43 09.952685328   16.03 15.49     ~ 620 0
61 NGC 6140 AG? 16 20 58.162 +65 23 25.98   12.6       ~ 122 0
62 LEDA 101221 Sy2 21 37 28.1177197464 -38 24 40.805790408   15.56       ~ 14 0
63 ESO 343-14 EmG 21 37 45.183 -38 29 33.17   15.82       ~ 19 0
64 LEDA 126458 Sy1 21 38 49.9068728136 -38 28 40.241632224 14.89 17.70 15.71 16.39   ~ 24 0
65 MCG-03-58-009 EmG 22 53 40.8419678976 -17 28 43.849795944   15.18   13.93   ~ 29 0
66 NAME MR 2251-178 Sy1 22 54 05.8858611984 -17 34 55.402233708   14.99 14.36 15.12   ~ 467 4
67 RX J2324.7-4040 BLL 23 24 44.6723616768 -40 40 49.444171248 15.88 15.72 15.54 16.84   ~ 88 1
68 IC 5325 Sy2 23 28 43.4210245680 -41 19 59.690746920 11.80 11.89 11.27 10.73 11.5 ~ 111 1

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