2017ApJ...849...26U


C.D.S. - SIMBAD4 rel 1.7 - 2020.09.25CEST09:55:51

2017ApJ...849...26U - Astrophys. J., 849, 26-26 (2017/November-8)

The EDGE-CALIFA survey: variations in the molecular gas depletion time in local galaxies.

UTOMO D., BOLATTO A.D., WONG T., OSTRIKER E.C., BLITZ L., SANCHEZ S.F., COLOMBO D., LEROY A.K., CAO Y., DANNERBAUER H., GARCIA-BENITO R., HUSEMANN B., KALINOVA V., LEVY R.C., MAST D., ROSOLOWSKY E. and VOGEL S.N.

Abstract (from CDS):

We present results from the EDGE survey, a spatially resolved CO(1-0) follow-up to CALIFA, an optical Integral Field Unit survey of local galaxies. By combining the data products of EDGE and CALIFA, we study the variation in molecular gas depletion time (τdep) on kiloparsec scales in 52 galaxies. We divide each galaxy into two parts: the center, defined as the region within 0.1 R25, and the disk, defined as the region between 0.1 and 0.7 R25. We find that 14 galaxies show a shorter τdep (∼1 Gyr) in the center relative to that in the disk (τdep ∼ 2.4 Gyr), which means the central region in those galaxies is more efficient at forming stars per unit molecular gas mass. This finding implies that the centers with shorter τdep resemble the intermediate regime between galactic disks and starburst galaxies. Furthermore, the central drop in τdep is correlated with a central increase in the stellar surface density, suggesting that a shorter τdep is associated with molecular gas compression by the stellar gravitational potential. We argue that varying the CO-to-H2 conversion factor only exaggerates the central drop of τdep.

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

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

Simbad objects: 54

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Number of rows : 54

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NGC 7819 GiG 00 04 24.495 +31 28 19.30   14.3       ~ 105 0
2 NGC 477 Sy2 01 21 20.3413342481 +40 29 17.410487515   14.0       ~ 84 0
3 IC 1683 GiG 01 22 38.867 +34 26 13.21   14.2       ~ 70 0
4 NGC 496 GiG 01 23 11.618 +33 31 45.29   14.3       ~ 90 0
5 NGC 551 G 01 27 40.6317165588 +37 10 58.787535302   13.5       ~ 66 0
6 UGC 3253 G 05 19 41.625 +84 03 09.10   13.1       ~ 57 0
7 NGC 2253 G 06 43 14.6852097640 +65 40 38.949836611   15.0       ~ 46 0
8 NGC 2347 LIN 07 16 04.087 +64 42 41.54   13.2       ~ 104 0
9 NGC 2480 GiP 07 57 10.444 +23 46 46.68   15.2       ~ 37 0
10 NVSS J075913+325454 rG 07 59 13.077 +32 54 53.30   13.5       ~ 78 1
11 FIRST J083322.8+523157 rG 08 33 22.639 +52 31 56.62   14.32       ~ 42 1
12 NGC 2730 rG 09 02 15.839 +16 50 17.51   13.7       ~ 57 0
13 NGC 2906 GiG 09 32 06.247 +08 26 30.86   13.1       ~ 130 0
14 NVSS J093526+294843 rG 09 35 26.2778473524 +29 48 45.574744593   15.0       ~ 48 0
15 NGC 3381 GiG 10 48 24.7993628769 +34 42 41.084421593   12.8       ~ 131 0
16 NGC 3811 G 11 41 16.655 +47 41 26.62   13.0       ~ 149 0
17 NGC 3815 GiG 11 41 39.309 +24 48 01.90   14.2       ~ 67 0
18 NGC 3994 LIN 11 57 36.866 +32 16 39.45   13.51 12.87     ~ 167 1
19 UGC 7012 rG 12 02 03.164 +29 50 53.11   14.3       ~ 84 0
20 NGC 4047 G 12 02 50.6873307305 +48 38 10.343981636   12.8       ~ 77 0
21 NGC 4470 H2G 12 29 37.8070254595 +07 49 27.286182613   12.9       ~ 201 0
22 NGC 4644 GiP 12 42 42.6505379517 +55 08 43.928656893   14.8       ~ 57 0
23 NGC 4711 GiC 12 48 45.8621672335 +35 19 57.883605425   14.4       ~ 53 0
24 UGC 8107 LIN 12 59 39.657 +53 20 28.70   15.0       ~ 37 0
25 NGC 4961 GiP 13 05 47.5766135361 +27 44 03.246072606   13.5       ~ 149 0
26 NGC 5000 SBG 13 09 47.454 +28 54 25.07   14.0 13.41     ~ 145 1
27 NGC 5016 AGN 13 12 06.6702084873 +24 05 41.970504488   13.180 12.558 12.093 11.547 ~ 133 0
28 NGC 5056 G 13 16 12.329 +30 57 01.08   13.6       ~ 116 0
29 M 51 GiP 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 3820 4
30 NGC 5480 G 14 06 21.522 +50 43 29.99   12.6       ~ 169 0
31 NVSS J141045+151231 rG 14 10 45.462 +15 12 33.91   14.7       ~ 55 0
32 NGC 5520 GiP 14 12 22.8052932999 +50 20 54.474015371   13.3       ~ 101 0
33 NGC 5633 EmG 14 27 28.3609163671 +46 08 47.523613534   13.176 12.932 12.449 11.575 ~ 152 0
34 NGC 5657 rG 14 30 43.641 +29 10 50.31   14.4       ~ 73 0
35 NGC 5732 G 14 40 38.994 +38 38 15.70   14.4       ~ 58 0
36 UGC 9476 rG 14 41 31.959 +44 30 45.39   13.59 12.95     ~ 78 0
37 UGC 9542 GiG 14 49 01.190 +42 27 50.40   15.3       ~ 51 0
38 NGC 5784 GiG 14 54 16.458 +42 33 27.97   13.7       ~ 62 0
39 UGC 9759 GiG 15 10 41.008 +55 20 59.32   15.1       ~ 39 0
40 NGC 5930 GiP 15 26 07.9964334517 +41 40 33.691556640   13.0       ~ 412 0
41 NGC 5934 LIN 15 28 12.762 +42 55 47.44   14.5       ~ 48 0
42 NGC 5947 AGN 15 30 36.5917232336 +42 43 01.769106580   14.8       ~ 61 0
43 NGC 5953 GiP 15 34 32.402 +15 11 37.80   13.23 12.45     ~ 339 1
44 NGC 5980 GiG 15 41 30.4161604675 +15 47 15.735323846   13.3       ~ 74 0
45 NGC 6004 GiG 15 50 22.694 +18 56 20.77   13.4       ~ 80 0
46 IC 1151 G 15 58 32.329 +17 26 29.59   13.4       ~ 109 0
47 NGC 6060 GiG 16 05 51.980 +21 29 05.94   14.3       ~ 82 0
48 NVSS J160640+300558 rG 16 06 40.221 +30 05 56.43   14.4       ~ 96 0
49 IC 1199 G 16 10 34.347 +10 02 25.50   14.6       ~ 45 0
50 NGC 6155 EmG 16 26 08.3334871725 +48 22 00.416360731   13.20       ~ 91 1
51 NGC 6186 GiG 16 34 25.485 +21 32 27.01   14.2       ~ 71 0
52 UGC 10710 GiG 17 06 52.5404664782 +43 07 20.026364944   15.2       ~ 57 0
53 NGC 6301 GiG 17 08 32.739 +42 20 20.86   14.6       ~ 51 0
54 NGC 7738 LIN 23 44 02.0233516093 +00 30 59.758852365   14.4       ~ 75 0

    Equat.    Gal    SGal    Ecl

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2020.09.25-09:55:51

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