2018ApJ...868..132P


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.15CEST22:32:35

2018ApJ...868..132P - Astrophys. J., 868, 132-132 (2018/December-1)

The effect of galaxy interactions on molecular gas properties.

PAN H.-A., LIN L., HSIEH B.-C., XIAO T., GAO Y., ELLISON S.L., SCUDDER J.M., BARRERA-BALLESTEROS J., YUAN F., SAINTONGE A., WILSON C.D., HWANG H.S., DE LOOZE I., GAO Y., HO L.C., BRINKS E., MOK A., BROWN T., DAVIS T.A., WILLIAMS T.G., CHUNG A., PARSONS H., BUREAU M., SARGENT M.T., CHUNG E.J., KIM E., LIU T., MICHALOWSKI M.J. and TOSAKI T.

Abstract (from CDS):

Galaxy interactions are often accompanied by an enhanced star formation rate (SFR). Since molecular gas is essential for star formation, it is vital to establish whether and by how much galaxy interactions affect the molecular gas properties. We investigate the effect of interactions on global molecular gas properties by studying a sample of 58 galaxies in pairs and 154 control galaxies. Molecular gas properties are determined from observations with the JCMT, PMO, and CSO telescopes and supplemented with data from the xCOLD GASS and JINGLE surveys at 12CO(1-0) and 12CO(2-1). The SFR, gas mass (MH2_), and gas fraction (fgas) are all enhanced in galaxies in pairs by ∼2.5 times compared to the controls matched in redshift, mass, and effective radius, while the enhancement of star formation efficiency (SFE ≡SFR/MH2_) is less than a factor of 2. We also find that the enhancements in SFR, MH2_ and fgas, increase with decreasing pair separation and are larger in systems with smaller stellar mass ratio. Conversely, the SFE is only enhanced in close pairs (separation <20 kpc) and equal-mass systems; therefore, most galaxies in pairs lie in the same parameter space on the SFR-MH2_ plane as controls. This is the first time that the dependence of molecular gas properties on merger configurations is probed statistically with a relatively large sample and a carefully selected control sample for individual galaxies. We conclude that galaxy interactions do modify the molecular gas properties, although the strength of the effect is dependent on merger configuration.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: interactions - galaxies: ISM - ISM: molecules - galaxies: star formation

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 - 2021
#notes
1 2MASX J02505745+0022098 Sy1 02 50 57.4604294922 +00 22 09.768242184   16.0       ~ 18 0
2 Mrk 1076 GiP 03 19 43.0391224711 +00 33 55.729212645   15.6       ~ 31 0
3 NVSS J032042-010628 rG 03 20 42.956 -01 06 31.15   14.70   13.63   ~ 60 0
4 NVSS J032042-010010 rG 03 20 43.1871573588 -01 00 08.174506920   16.10   14.60   ~ 27 0
5 UGC 2705 G 03 22 47.229 +00 08 57.72   15.0       ~ 31 0
6 NVSS J074637+444729 rG 07 46 37.708 +44 47 25.86   14.3       ~ 43 0
7 NVSS J075454+535046 rG 07 54 54.462 +53 50 46.60   14.5       ~ 24 0
8 NVSS J075641+175928 rG 07 56 41.8531482833 +17 59 28.287392661   14.7       ~ 20 0
9 NGC 2536 GiP 08 11 15.921 +25 10 45.71   14.8 13.93     ~ 83 0
10 NVSS J081904+214730 rG 08 19 05.0924503501 +21 47 29.056119837   15.2       ~ 49 0
11 2MASX J08215020+4531111 G 08 21 50.1641652198 +45 31 10.658106177           ~ 8 0
12 NVSS J084256+133826 rG 08 42 56.381 +13 38 29.70   14.5       ~ 19 0
13 2MASX J08525499+0309090 AG? 08 52 54.9923774500 +03 09 08.444061378           ~ 14 0
14 2MASX J09031125+1009074 G 09 03 11.2507369227 +10 09 07.157788494   15.3       ~ 15 0
15 2MASX J09150072+4201281 SBG 09 15 00.759 +42 01 27.88   15.4       ~ 20 0
16 NAME Arp 55 NE AGN 09 15 55.522 +44 19 58.08   14.87 14.42     ~ 39 0
17 2MASX J09323656+0950257 Sy2 09 32 36.582 +09 50 25.93   15.6       ~ 15 0
18 MCG+08-18-016a GiG 09 38 46.172 +48 33 46.33   14.7       ~ 13 0
19 2MFGC 7657 LIN 09 53 24.588 +07 49 56.77           ~ 11 0
20 UGC 5430 G 10 05 08.319 +44 30 50.57   17       ~ 19 0
21 2MASX J10071891+4632472 GiG 10 07 18.989 +46 32 47.07   15.1       ~ 14 0
22 NVSS J102843+395019 rG 10 28 43.067 +39 50 19.89   15.5       ~ 19 0
23 2MFGC 8123 G 10 28 55.102 +39 53 41.38           ~ 6 0
24 IC 620 AGN 10 33 33.426 +11 52 17.16   15.2       ~ 33 0
25 2MASX J10402463+0651378 Sy2 10 40 24.664 +06 51 37.71   15.7       ~ 19 0
26 NAME UMa Region reg 11 00 +50.0           ~ 318 0
27 Z 241-78 rG 11 06 37.3629130134 +46 02 19.857215481           ~ 22 0
28 2MASX J11274629+2657341 LIN 11 27 46.2812337108 +26 57 34.543970982   15.7       ~ 18 0
29 2MASX J11294635+1520010 LIN 11 29 46.3587559580 +15 20 01.074399171   15.3       ~ 18 0
30 MCG+01-29-047 AG? 11 31 16.0270392472 +04 39 08.703438754   15.0       ~ 17 0
31 NAME Crater Cluster GlC 11 36 16.20 -10 52 38.8           ~ 66 1
32 NVSS J113701+153417 rG 11 37 01.871 +15 34 14.09   14.5       ~ 55 0
33 NAME CVn-Cam Cloud GrG 11 38 +70.6           ~ 5 0
34 2MASX J11391469+1459328 GiC 11 39 14.737 +14 59 32.59   15.6       ~ 13 0
35 UGC 6806 EmG 11 50 20.109 +25 57 42.18   14.4       ~ 37 0
36 NGC 3989 EmG 11 57 26.6743134569 +25 13 59.002914674   15.7       ~ 21 0
37 NVSS J120222+295143 rG 12 02 22.537 +29 51 42.08   14.4       ~ 57 0
38 2dFGRS TGN382Z146 GiG 12 04 09.7339812000 +01 49 33.351341301   15.5   14.868   ~ 23 0
39 2MASX J12104928+4430454 G 12 10 49.2781392024 +44 30 45.310805560   15.4       ~ 13 0
40 NAME Coma I Group GrG 12 22 19.4 +29 53 47           ~ 101 0
41 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 6036 0
42 NAME NGP reg 12 51 26.275 +27 07 41.70           ~ 1059 0
43 Mrk 58 EmG 12 59 05.295 +27 38 39.85 14.90 15.1 14.54     ~ 107 0
44 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4351 2
45 2MASX J13012507+2840376 GiC 13 01 25.0686818587 +28 40 38.052613761   15.38 14.75     ~ 59 0
46 MCG+08-24-033 rG 13 04 20.694 +45 03 23.91   15.6       ~ 12 0
47 MCG+04-31-006 EmG 13 06 15.091 +25 27 38.08   14.9       ~ 66 0
48 UGC 8208 LIN 13 07 50.799 +03 11 40.83   17.82 17.10     ~ 23 0
49 IC 883 SBG 13 20 35.380 +34 08 21.84   14.8       ~ 375 1
50 NVSS J132443+323225 rG 13 24 43.681 +32 32 25.03   15.3       ~ 26 0
51 NVSS J133457+340238 rG 13 34 57.2735567330 +34 02 38.558543591   13.8       ~ 45 1
52 2MASX J13410943+2316400 G 13 41 09.430 +23 16 40.54           ~ 6 0
53 UGC 8713 GiP 13 47 01.260 +33 53 36.95   15.5 14.26     ~ 44 0
54 Mrk 276 EmG 13 51 29.4786816676 +43 48 23.047543695   15.2       ~ 23 0
55 2MASX J13565539+1408327 G 13 56 55.397 +14 08 32.79   15.1       ~ 16 0
56 FIRST J140057.7+425120 rG 14 00 57.827 +42 51 20.31   16       ~ 25 0
57 UGC 9221 G 14 23 42.385 +34 00 31.98   14.4       ~ 34 0
58 NVSS J143525+002007 rG 14 35 25.3417252874 +00 20 03.817599761   14.9       ~ 20 0
59 NVSS J153545+445007 rG 15 35 45.824 +44 50 05.31   14.4       ~ 24 0
60 2MASX J15421945+4756365 G 15 42 19.332 +47 56 36.81           ~ 6 0
61 NVSS J160243+411150 rG 16 02 42.581 +41 11 50.14   14.5       ~ 42 2
62 IC 4612 AGN 16 33 49.617 +39 15 47.50   14.6       ~ 41 0
63 NGC 6387 Sy1 17 28 23.844 +57 32 43.51   15.0 16.81     ~ 30 0
64 NGC 7401 G 22 52 58.563 +01 08 33.89   14.99       ~ 11 0
65 2MASS J23122920+1356323 LIN 23 12 29.209 +13 56 32.39           ~ 19 0
66 NAME CVn Spur ~ ~ ~           ~ 4 0
67 NAME Leo Cloud Cld ~ ~           ~ 53 0
68 NAME VIR-LIB CL Cld ~ ~           ~ 10 0

    Equat.    Gal    SGal    Ecl

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2021.05.15-22:32:35

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