2012A&A...540A..96M

Query : 2012A&A...540A..96M

2012A&A...540A..96M - Astronomy and Astrophysics, volume 540A96-96 (2012/4-1)

Molecular gas content and SFR in Hickson compact groups: enhanced or deficient?

MARTINEZ-BADENES V., LISENFELD U., ESPADA D., VERDES-MONTENEGRO L., GARCIA-BURILLO S., LEON S., SULENTIC J. and YUN M.S.

Abstract (from CDS):

We study the effect of the extreme environment in Hickson compact groups (HCGs) on the molecular gas mass, MH2, and the star formation rate (SFR) of galaxies as a function of atomic hydrogen (HI) content and evolutionary phase of the group. We selected a redshift-limited (D<100Mpc) sample of 88 galaxies in 20 HCGs with available atomic hydrogen (HI) VLA maps, covering a wide range of HI deficiencies and evolutionary phases of the groups and containing at least one spiral galaxy. We observed the CO(1-0) and CO(2-1) lines with the IRAM 30m telescope for 47 galaxies. Together with literature data, our sample contains CO(1-0) spectra for 86 galaxies. We derived the far-infrared (FIR) luminosity (LFIR) from IRAS data and used it as a tracer of the SFR. We calculated the HI mass (MHI), LFIR, and MH2 deficiencies, based on the values expected from LB and LK in isolated galaxies from the AMIGA sample. We limited our statistical analysis to spiral galaxies, since the large number of upper limits did not allow drawing strong conclusions about MH2 and LFIR in early-type galaxies. The mean deficiencies of LFIR and MH2 of spiral galaxies in HCGs are close to 0, indicating that their average SFR and molecular gas content are similar to those of isolated galaxies. However, there are indications of an excess of MH2 (∼50%) in spiral galaxies in HCGs, which can be interpreted, assuming that there is no systematic difference in the CO-to-H2 conversion factor, as either an enhanced molecular gas content or as a higher concentration of the molecular component towards the center in comparison to galaxies in lower density environments. In contrast, the mean MHI of spiral galaxies in HCGs is only 12% of the expected value. The specific SFR (sSFR=SFR/stellar mass) tends to be lower for galaxies with higher MH2 or MHI deficiency. This trend is not seen for the star formation efficiency (SFE=SFR/MH2), which is very similar to isolated galaxies. We found tentative indications of an enhancement of MH2 in spiral galaxies in HCGs in an early evolutionary phase and a decrease in later phases. We suggest that this might be due to an enhancement of the conversion from atomic to molecular gas due to ongoing tidal interactions in an early evolutionary phase, followed by HI stripping and a decrease in the molecular gas content because of lack of replenishment. The properties of MH2 and LFIR in galaxies in HCGs are surprisingly similar to those of isolated galaxies, in spite of the much higher Def(MHI) of the former. The trends of the sSFR and Def(MH2) with Def(MHI) and the evolutionary state indicate, however, that the ongoing interaction might have some effect on the molecular gas and SF.

Abstract Copyright: ∼

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

VizieR on-line data: <Available at CDS (J/A+A/540/A96): table1.dat table2.dat table3.dat table5.dat>

Simbad objects: 112

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Number of rows : 112
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 MCG+02-01-009 AG? 00 01 13.3051746288 +13 08 38.132079252   16.01   15.46   ~ 41 0
2 MCG+02-01-010 AG? 00 01 14.971 +13 06 44.65   16.97   14.67   ~ 44 0
3 HCG 100 CGG 00 01 19.783 +13 07 21.81           ~ 58 0
4 NGC 7803 GiG 00 01 19.9689164664 +13 06 40.486549320   13.8   12.62   ~ 98 0
5 Z 433-14 GiG 00 01 26.032 +13 06 46.59   15.3   14.28   ~ 57 0
6 NGC 192 GiC 00 39 13.39127 +00 51 50.8860   13.9   11.97   ~ 145 1
7 HCG 7 CGG 00 39 15.9 +00 53 17   11.4       ~ 87 0
8 NGC 196 GiG 00 39 17.8424526792 +00 54 45.971984899   14.2   12.40   ~ 85 0
9 NGC 197 GiP 00 39 18.7935711480 +00 53 31.087552704   14.85   13.39   ~ 61 0
10 NGC 201 EmG 00 39 34.8489575280 +00 51 35.886502080   14.7   12.41   ~ 107 0
11 NGC 529 GiG 01 25 40.2853500672 +34 42 46.858807800   13.1   11.68   ~ 105 0
12 NGC 531 GiG 01 26 18.7951667304 +34 45 14.685578460   14.9   13.23   ~ 56 0
13 NGC 536 AGN 01 26 21.7805515464 +34 42 11.066529348   13.2   11.81   ~ 132 0
14 HCG 10 CGG 01 26 24.5 +34 42 51           ~ 52 0
15 NGC 542 GiG 01 26 30.8394126528 +34 40 31.847585556   15.4   14.23   ~ 62 0
16 Z 387-40 GiG 02 07 25.2892107000 +02 06 58.200256080   15.94   13.96   ~ 26 0
17 Z 387-41 GiG 02 07 34.1164040136 +02 06 54.823402476   15.1   13.41   ~ 45 0
18 Z 387-42 GiG 02 07 37.5133971288 +02 10 50.646844884   15.3   13.69   ~ 51 0
19 MCG+00-06-036 G 02 07 37.7844257160 +02 11 24.907728804   16.73   15.35   ~ 22 0
20 HCG 15 CGG 02 07 39.0 +02 08 18           ~ 75 0
21 Z 387-43 G 02 07 39.7614506808 +02 08 58.877224152   14.91   13.34   ~ 46 0
22 Z 387-44 GiG 02 07 53.0841015768 +02 10 03.087912684   15.2   13.08   ~ 51 0
23 NGC 833 Sy2 02 09 20.8490871072 -10 07 59.003785884   14.02 13.00 12.75   ~ 207 0
24 NGC 835 Sy2 02 09 24.606 -10 08 09.31   13.29 12.45 12.24   ~ 226 1
25 NGC 838 LIN 02 09 38.562 -10 08 46.12   13.72   12.65   ~ 211 1
26 HCG 16 CGG 02 09 40.82 -10 11 02.0           ~ 175 0
27 NGC 839 EmG 02 09 42.73127 -10 11 01.6370   13.98 11.42 12.70   ~ 161 1
28 MCG-02-08-050 GiG 03 06 55.210 -09 37 42.90   16.66   14.54   ~ 40 0
29 NGC 1214 Sy1 03 06 55.9415492400 -09 32 38.450810976   15.13   13.45   ~ 54 0
30 HCG 23 CGG 03 07 06 -09 35.1           ~ 44 0
31 NGC 1215 GiG 03 07 09.4626542856 -09 35 33.695780136   14.0   13.27 13.6 ~ 52 0
32 NGC 1216 GiG 03 07 18.3927342768 -09 36 45.561419820   16.00   13.67   ~ 52 0
33 Z 390-67 EmG 03 20 38.5554550752 -01 02 06.123011712   15.7   14.58   ~ 46 0
34 Z 390-68 AGN 03 20 42.956 -01 06 31.15   14.70   13.63   ~ 94 0
35 HCG 25 CGG 03 20 43.7 -01 03 07     13.6     ~ 62 0
36 LEDA 12538 G 03 20 45.3272360592 -01 03 14.224586328   16.66   14.96   ~ 38 0
37 Z 390-69 GiG 03 20 45.4171166448 -01 02 40.908067368   14.9   12.33   ~ 52 0
38 Z 393-44 GiG 04 36 18.6262896600 -02 49 53.030942076   13.79   11.29   ~ 39 0
39 LEDA 15624 AG? 04 36 23.3795427648 -02 48 00.099203508   15.87   14.70   ~ 22 0
40 HCG 30 CGG 04 36.5 -02 49           ~ 45 0
41 Z 393-45 Sy2 04 36 30.2724949056 -02 51 59.098177836   14.33   12.59   ~ 44 0
42 LEDA 15636 AG? 04 36 36.6000944952 -02 50 35.437200000   16.76   15.05   ~ 23 0
43 NGC 1741B G 05 01 35.550 -04 15 47.42   15.35   14.73   ~ 66 0
44 HCG 31 CGG 05 01 37 -04 15.4           ~ 132 0
45 LEDA 16573 G 05 01 37.832 -04 15 28.48   13.44   12.76   ~ 74 1
46 SDSS J050138.30-041533.9 G 05 01 38.2955322168 -04 15 34.012659996   15.62   14.43   ~ 27 0
47 NGC 1741 EmG 05 01 38.3 -04 15 25   13.7   13.02 13.6 ~ 273 0
48 IC 399 EmG 05 01 44.0604445128 -04 17 19.319048052   15.0 14.8     ~ 76 0
49 NGC 2783B GiG 09 13 32.834 +30 00 00.31   15.2   13.33   ~ 84 0
50 MCG+05-22-016 EmG 09 13 33.875 +30 00 51.45   16.41   15.87   ~ 45 0
51 MCG+05-22-018 AGN 09 13 34.0222370040 +30 02 23.333922168   17.01   15.97   ~ 49 0
52 HCG 37 CGG 09 13 35.6 +30 00 51           ~ 65 0
53 MCG+05-22-020 GiG 09 13 37.3548457080 +29 59 58.392000564   16.51   14.44   ~ 44 0
54 NGC 2783 LIN 09 13 39.4766036016 +29 59 34.601211960   13.9   12.05   ~ 137 0
55 MCG-01-25-008 GiG 09 38 53.471 -04 50 55.32   14.09   12.18   ~ 65 0
56 MCG-01-25-009 GiG 09 38 53.610 -04 51 36.58   15.82   13.66   ~ 56 0
57 APG 321 IG 09 38 54 -04 51.1   15       ~ 82 0
58 MCG-01-25-012 GiG 09 38 54.961 -04 51 57.31   15.19   13.24   ~ 48 0
59 MCG-01-25-011 GiG 09 38 55.2813694056 -04 51 28.652049396   17.36   15.41   ~ 40 0
60 MCG-01-25-010 Sy1 09 38 55.763 -04 50 13.45   15.20   13.54   ~ 55 0
61 NGC 3185 Sy2 10 17 38.5650471192 +21 41 17.573817228   12.99 12.17 12.37   ~ 308 1
62 NGC 3187 GiP 10 17 47.8703571264 +21 52 23.984065272 13.71 13.91 13.44 14.06   ~ 166 1
63 HCG 44 CGG 10 18 00 +21 48.7           ~ 86 0
64 NGC 3189 GiP 10 18 05.643 +21 49 54.98 12.60 12.12 11.15 11.14   ~ 422 2
65 NGC 3193 GiP 10 18 24.884 +21 53 38.32 12.29 11.83 10.88 12.19   ~ 301 1
66 NAME Coma Supercluster SCG 11 23 +23.9           ~ 291 0
67 NGC 3817 LIN 11 41 52.9486569792 +10 18 15.783771096   14.4   13.24   ~ 68 0
68 NGC 3820 GiC 11 42 04.90736 +10 23 03.2965   15.59   14.33   ~ 46 0
69 NGC 3819 GiG 11 42 05.8627422000 +10 21 04.118754744   14.8   13.62   ~ 49 0
70 HCG 58 CGG 11 42 09.4 +10 16 30   11.8 13.68     ~ 82 1
71 NGC 3822 Sy2 11 42 11.0963209488 +10 16 39.965991204   13.7   12.97   ~ 142 0
72 NGC 3825 LIN 11 42 23.7302541144 +10 15 50.919348420   13.8   12.52   ~ 80 0
73 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1127 1
74 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
75 MCG-01-35-013 GiG 13 48 59.454 -07 11 41.75   15.26   13.57   ~ 53 0
76 HCG 67 CGG 13 49 03.5 -07 12 20           ~ 53 0
77 VV 135b GiG 13 49 09.8 -07 13 54   15.94   13.28   ~ 16 0
78 NGC 5306 GiG 13 49 11.4298022808 -07 13 27.840105444   13.43   11.73   ~ 42 1
79 MCG-01-35-015 Sy2 13 49 12.2540967192 -07 12 32.548536216   15.83   14.56   ~ 25 0
80 NGC 5350 H2G 13 53 21.6232753416 +40 21 50.186768184   12.4   10.99   ~ 240 1
81 NGC 5353 rG 13 53 26.7104646981 +40 16 59.200050598   11.8   10.57   ~ 309 1
82 NGC 5354 LIN 13 53 26.7262413240 +40 18 09.928163700   12.3   10.64   ~ 169 0
83 HCG 68 CGG 13 53 40.9 +40 19 07     12.4     ~ 114 0
84 NGC 5355 GiP 13 53 45.5694778488 +40 20 19.254210180   14.0   13.08   ~ 126 0
85 NGC 5358 GiP 13 54 00.4229168952 +40 16 38.364580668   14.6   13.35   ~ 102 0
86 NGC 6027A GiG 15 59 10.8358913184 +20 45 43.819011072   13.4   14.21   ~ 70 0
87 NGC 6027B GiG 15 59 11.156 +20 45 17.02   13.4   13.46   ~ 78 0
88 HCG 79 CGG 15 59 11.605 +20 45 24.66           ~ 117 0
89 NGC 6027C GiG 15 59 11.875 +20 44 49.71   16.89   16.74   ~ 58 0
90 NGC 6027 GiG 15 59 12.542 +20 45 48.07   13.4   13.07   ~ 117 2
91 MCG-01-53-014 EmG 20 52 12.751 -05 47 53.88   15.96   15.17   ~ 45 0
92 HCG 88 CGG 20 52.4 -05 45           ~ 55 0
93 NGC 6976 AG? 20 52 26.0260763016 -05 46 20.342324820   14.95   13.96   ~ 54 0
94 NGC 6977 LIN 20 52 29.7023914056 -05 44 45.953608524   14.28   12.73   ~ 71 0
95 NGC 6978 LIN 20 52 35.4347594760 -05 42 40.047186780   14.22   12.67   ~ 91 0
96 NGC 7317 Sy2 22 35 51.8681746944 +33 56 41.758033380 15.10 14.57 13.60 12.72   ~ 182 1
97 NGC 7318A GiP 22 35 56.70407 +33 57 55.7710   14.4   13.13   ~ 140 0
98 NAME Stephan's Quintet CGG 22 35 57.5 +33 57 36           ~ 480 1
99 NGC 7318B GiP 22 35 58.3903354632 +33 57 57.827617524   14.06   12.47   ~ 144 0
100 NGC 7319 Sy2 22 36 03.602 +33 58 33.18   14.57 13.53 12.65   ~ 325 0
101 NGC 7547 GiG 23 15 03.4468657032 +18 58 24.094165512   14.9   12.92   ~ 58 0
102 HCG 93 CGG 23 15 12.2 +18 59 31           ~ 56 0
103 NGC 7550 LIN 23 15 16.0635618785 +18 57 41.255155052   13.9   11.85   ~ 133 1
104 NGC 7549 GiG 23 15 17.285 +19 02 29.92   14.1   12.79   ~ 133 0
105 NGC 7553 GiG 23 15 33.0984377976 +19 02 53.479431456   15.85   13.90   ~ 33 0
106 IC 5351 GiG 23 47 18.9320265192 -02 18 48.516898356   14.95   12.66   ~ 48 0
107 IC 5352 GiG 23 47 19.8667839720 -02 16 50.750890536   16.75       ~ 27 0
108 IC 5357 GiG 23 47 23.0010862728 -02 18 02.057603256   14.27   12.75   ~ 63 0
109 IC 5356 GiG 23 47 23.8042007424 -02 21 04.380819552   15.11   13.57   ~ 44 0
110 HCG 97 CGG 23 47 24.0 -02 19 08           ~ 102 0
111 IC 5359 Sy2 23 47 37.8658531296 -02 19 00.173670924   15.86   14.17   ~ 49 0
112 HCG 92f G ~ ~           ~ 4 0

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