2017ApJ...837..138F

Query : 2017ApJ...837..138F

2017ApJ...837..138F - Astrophys. J., 837, 138-138 (2017/March-2)

Probing large galaxy halos at z ∼ 0 with automated Lyα-absorption matching.

FRENCH D.M. and WAKKER B.P.

Abstract (from CDS):

We present initial results from an ongoing large-scale study of the circumgalactic medium in the nearby Universe (cz  10,000 km s–1), using archival Cosmic Origins Spectrograph spectra of background quasi-stellar objects. This initial sample contains 33 sightlines chosen for their proximity to large galaxies (D 25 kpc) and high signal-to-noise ratios (S/N 10), yielding 48 Lyα absorption lines that we have paired with 33 unique galaxies, with 29 cases where multiple absorbers within a single sightline are paired with the same galaxy. We introduce a likelihood parameter to facilitate the matching of galaxies to absorption lines in a reproducible manner. We find the usual anti-correlation between Lyα equivalent width (EW) and impact parameter (ρ) when we normalize by galaxy virial radius (Rvir). Galaxies associated with a Lyα absorber are found to be more highly inclined than galaxies in the survey volume at a  99 % confidence level (equivalent to ∼3.6σfor a normal distribution). In contrast with suggestions in other recent papers of a correlation with azimuth angle for Mg II absorption, we find no such correlation for Lyα.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

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

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 7814 GiG 00 03 14.947 +16 08 42.82   12.0       ~ 313 1
2 ICRF J000559.2+160949 Sy1 00 05 59.2378545384 +16 09 49.021968096   16.51 16.40     ~ 307 1
3 NGC 768 LIN 01 58 40.9396864704 +00 31 45.224952888   14.3       ~ 101 0
4 Mrk 1014 Sy1 01 59 50.2534701768 +00 23 40.864244784   16.08 15.87     ~ 606 0
5 6dFGS gJ021218.3-073720 Sy1 02 12 18.3261505008 -07 37 19.814910204   17.97 17.73 17.38   ~ 44 0
6 MCG-01-06-070 LIN 02 13 15.7954116216 -07 39 42.788642796   13.87   12.89   ~ 47 1
7 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1741 2
8 QSO J0243-3030 QSO 02 43 37.6754969448 -30 30 48.293562924   18.58 17.20 17.49   ~ 19 0
9 QSO J0245-3007 QSO 02 45 00.7779896232 -30 07 22.354506012   19.414 18.28 19.335   ~ 11 0
10 NGC 1097 LIN 02 46 19.059 -30 16 29.68 10.46 9.97 9.48 8.72 9.8 ~ 1448 3
11 Z 330-31 GiG 07 13 14.421 +73 50 35.47   13.9       ~ 40 0
12 QSO J0714+7408 QSO 07 14 36.1251036096 +74 08 10.146305688     17.10     ~ 42 1
13 8C 0716+714 BLL 07 21 53.4482942664 +71 20 36.363846516   15.5 15.50 14.27   ~ 1388 1
14 Z 330-36 GiG 07 22 34.7529993480 +71 35 56.174136504   13.0       ~ 68 0
15 Z 31-54 G 08 07 58.1075102808 +05 12 23.967811944   15.2       ~ 26 0
16 QSO J0808+0514 BLL 08 08 38.8473549816 +05 14 39.936989076   18.72 18.53     ~ 36 1
17 QSO B0832+2510 QSO 08 35 35.8061692320 +24 59 40.183955880   16.30 16.00     ~ 77 0
18 Z 119-130 EmG 08 36 07.410 +25 06 45.74   15.4       ~ 34 0
19 Ton 1009 QSO 09 09 06.1817119320 +32 36 30.196836540   17.55 17.38     ~ 37 0
20 NGC 2770 GiG 09 09 33.622 +33 07 24.29   12.1       ~ 285 0
21 Z 151-43 GiG 09 16 49.4600934576 +27 29 22.533005868   14.9       ~ 53 0
22 2MASS J09172857+2719508 Sy1 09 17 28.5714932136 +27 19 50.975480460   18.49 18.03     ~ 10 0
23 QSO J1001+5944 QSO 10 01 02.5505938056 +59 44 14.374738680   16.44 16.27     ~ 55 0
24 MCG+10-14-058 G 10 01 04.948 +59 49 25.57   16       ~ 13 0
25 LEDA 29208 Sy1 10 04 20.1379926888 +05 13 00.400882728   16.73 16.55     ~ 260 1
26 Z 36-31 AG? 10 04 53.9070552048 +05 03 45.482400036   14.7       ~ 29 0
27 2MASSI J1017309+470225 Sy1 10 17 30.9755845296 +47 02 25.012148676   17.82 17.62     ~ 39 0
28 NGC 3198 EmG 10 19 54.990 +45 32 58.88 10.83 10.87 10.33     ~ 946 1
29 MCG-04-26-019 EmG 11 02 50.1369752880 -23 35 29.953626612   14.22   13.00 13.3 ~ 42 0
30 PMN J1103-2329 BLL 11 03 37.6150845072 -23 29 31.203773520   17.00 16.55 16.61   ~ 405 1
31 2MASS J11174048+5301510 Sy1 11 17 40.4927153160 +53 01 51.253748688   17.72 17.52     ~ 37 0
32 NGC 3631 AG? 11 21 02.8871865144 +53 10 10.415331660   11.0       ~ 385 1
33 NGC 3640 GiG 11 21 06.852 +03 14 05.15 11.89 11.36 10.44     ~ 291 3
34 QSO J1122+0318 QSO 11 22 24.1473041400 +03 18 02.674138284   18.00 17.78     ~ 36 0
35 NGC 4437 AGN 12 32 45.586 +00 06 54.14   11.1   11.1 10.6 ~ 307 0
36 LBQS 1230-0015 Bla 12 33 04.0514120328 -00 31 34.179576564   18.02 17.87 16.8   ~ 75 1
37 NGC 4559 H2G 12 35 57.6402869976 +27 57 35.859278160   10.46 10.01     ~ 667 1
38 2MASS J12360401+2641358 Sy1 12 36 04.0249656696 +26 41 35.938231476   18.15 17.85     ~ 35 0
39 NGC 4565 Sy2 12 36 20.804 +25 59 14.61   13.61 12.43     ~ 991 0
40 NGC 4939 Sy2 13 04 14.3280524928 -10 20 22.300454724   14.81 13.80 10.92   ~ 332 1
41 QSO J1305+0357 QSO 13 05 24.2597994048 +03 57 30.932893728   17.94 17.88     ~ 37 0
42 QSO J1305-1033 Bla 13 05 33.0150535680 -10 33 19.430383680   15.18 15.23 14.46   ~ 624 1
43 Z 43-142 AGN 13 05 58.6403474448 +03 57 23.561280036   15.4       ~ 60 0
44 Z 161-70 GiG 13 30 06.5281555128 +31 23 17.084128956   15.0       ~ 29 0
45 2MASS J13305328+3119306 Sy1 13 30 53.2737822312 +31 19 30.581964264   17.65 17.41     ~ 60 0
46 Z 132-55 LIN 13 56 09.2975977104 +25 11 43.624862304   15.7       ~ 19 0
47 NGC 5364 GiP 13 56 12.004 +05 00 52.06   13.2       ~ 273 0
48 2MASS J13562557+2515238 Sy1 13 56 25.5590896728 +25 15 23.681819880   20.82 20.08     ~ 35 1
49 QSO B1354+0450 QSO 13 57 26.2745760120 +04 35 41.516873736   17.59 17.23     ~ 59 0
50 QSO J1404+3353 QSO 14 04 28.2859963512 +33 53 42.644223024   18.68 18.59     ~ 28 0
51 Z 191-49 Sy2 14 04 29.2267931376 +33 57 12.103382592   15.7       ~ 30 0
52 ICRF J143125.8+244220 Sy1 14 31 25.8850030680 +24 42 20.705101380   17.74 17.65     ~ 52 1
53 Z 318-12 G 15 02 14.8005827808 +68 15 42.509686752   15.4       ~ 14 0
54 LEDA 3096403 Sy1 15 03 16.3772002176 +68 10 06.255224364   17.4       ~ 16 1
55 Mrk 290 Sy1 15 35 52.4031021552 +57 54 09.515660508   15.55 15.27     ~ 575 0
56 NGC 5987 GiG 15 39 57.3733917696 +58 04 46.195631832   13.3       ~ 98 0
57 Z 166-47 Sy2 15 43 57.3402221184 +28 31 26.498803332   15.6       ~ 38 0
58 ATO J236.1272+28.4658 Sy1 15 44 30.5309356560 +28 27 56.897219232   16.85 16.58     ~ 31 0
59 UGC 10294 AG? 16 13 22.19 +65 25 06.3   16.5       ~ 10 0
60 Mrk 876 Sy1 16 13 57.1795021224 +65 43 09.952685328   16.03 15.49     ~ 620 0
61 2MASS J20430626+0324516 Sy1 20 43 06.2692727064 +03 24 51.724232352   17.0 17.0     ~ 12 0
62 NGC 6954 AG? 20 44 03.1804977216 +03 12 33.968654064   14.20       ~ 40 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 Z 376-20 AG? 21 39 26.755 +02 49 37.54   15.40       ~ 52 0
66 2MASS J21394418+0246052 Sy1 21 39 44.1915455592 +02 46 05.173524732   16.1 16.1     ~ 18 0
67 MCG-03-58-009 EmG 22 53 40.8419678976 -17 28 43.849795944   15.18   13.93   ~ 29 0
68 NAME MR 2251-178 Sy1 22 54 05.8858611984 -17 34 55.402233708   14.99 14.36 15.12   ~ 467 4

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