2022ApJ...927....9P

Query : 2022ApJ...927....9P

2022ApJ...927....9P - Astrophys. J., 927, 9-9 (2022/March-1)

The Gas-Star Formation Cycle in Nearby Star-forming Galaxies. II. Resolved Distributions of CO and Hα Emission for 49 PHANGS Galaxies.

PAN H.-A., SCHINNERER E., HUGHES A., LEROY A., GROVES B., BARNES A.T., BELFIORE F., BIGIEL F., BLANC G.A., CAO Y., CHEVANCE M., CONGIU E., DALE D.A., EIBENSTEINER C., EMSELLEM E., FAESI C.M., GLOVER S.C.O., GRASHA K., HERRERA C.N., HO I.-T., KLESSEN R.S., KRUIJSSEN J.M.D., LANG P., LIU D., McELROY R., MEIDT S.E., MURPHY E.J., PETY J., QUEREJETA M., RAZZA A., ROSOLOWSKY E., SAITO T., SANTORO F., SCHRUBA A., SUN J., TOMICIC N., USERO A., UTOMO D. and WILLIAMS T.G.

Abstract (from CDS):

The relative distribution of molecular gas and star formation in galaxies gives insight into the physical processes and timescales of the cycle between gas and stars. In this work, we track the relative spatial configuration of CO and Hα emission at high resolution in each of our galaxy targets and use these measurements to quantify the distributions of regions in different evolutionary stages of star formation: from molecular gas without star formation traced by Hα to star-forming gas, and to H II regions. The large sample, drawn from the Physics at High Angular resolution in Nearby GalaxieS ALMA and narrowband Hα (PHANGS-ALMA and PHANGS-Hα) surveys, spans a wide range of stellar masses and morphological types, allowing us to investigate the dependencies of the gas-star formation cycle on global galaxy properties. At a resolution of 150 pc, the incidence of regions in different stages shows a dependence on stellar mass and Hubble type of galaxies over the radial range probed. Massive and/or earlier-type galaxies in our sample exhibit a significant reservoir of molecular gas without star formation traced by Hα, while lower-mass galaxies harbor substantial H II regions that may have dispersed their birth clouds or formed from low-mass, more isolated clouds. Galactic structures add a further layer of complexity to the relative distribution of CO and Hα emission. Trends between galaxy properties and distributions of gas traced by CO and Hα are visible only when the observed spatial scale is ≪500 pc, reflecting the critical resolution requirement to distinguish stages of the star formation process.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Galaxies - Interstellar medium

Simbad objects: 56

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Number of rows : 56
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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
2 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
3 M 74 G 01 36 41.7451236624 +15 47 01.107512304 10.52 10.00 9.46 9.16   ~ 1934 1
4 NGC 1087 H2G 02 46 25.1550134904 -00 29 55.457857644   11.5   11.4 11.5 ~ 379 0
5 NGC 1300 Sy2 03 19 41.0462219928 -19 24 40.187565432   11.16 10.42 9.90 10.7 ~ 616 0
6 NGC 1317 GiP 03 22 44.2823209512 -37 06 13.180903956 12.20 11.78 11.02 10.22   ~ 240 1
7 IC 1954 GiG 03 31 31.393 -51 54 17.54   12.14   11.15 11.8 ~ 149 0
8 NGC 1365 Sy1 03 33 36.458 -36 08 26.37 10.48 10.08 9.63 8.79 9.7 ~ 1987 2
9 NGC 1385 EmG 03 37 28.323 -24 30 04.60 11.28 11.50 10.94 10.45 11.7 ~ 318 2
10 NGC 1433 Sy2 03 42 01.4847418992 -47 13 18.929092656   10.84 9.99 9.61 10.2 ~ 447 0
11 NGC 1511 G 03 59 36.98373 -67 38 03.3430   11.97   10.74 11.1 ~ 158 1
12 NGC 1512 GiP 04 03 54.281 -43 20 55.86 11.30 11.43 10.54 10.37   ~ 457 1
13 NGC 1546 EmG 04 14 36.542 -56 03 38.92 12.15 12.31 10.92 10.84 11.2 ~ 133 1
14 NGC 1559 GiG 04 17 35.7508602240 -62 47 01.251567384   11.19 10.45 10.11 10.4 ~ 325 1
15 NGC 1566 Sy1 04 20 00.3968473248 -54 56 16.624708764 10.29 10.19 9.73 9.21 10.1 ~ 1051 2
16 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
17 NGC 2090 GiG 05 47 01.8557074752 -34 15 01.679264784 12.17 11.70 11.20 10.43 11.0 ~ 206 1
18 NGC 2283 AG? 06 45 52.7901073776 -18 12 37.550287368   12.94   10.72 11.8 ~ 77 0
19 NGC 2566 GiG 08 18 45.608 -25 29 58.27   11.81   10.50 11.2 ~ 102 0
20 NGC 2835 EmG 09 17 52.8523921416 -22 21 16.839119700   11.03   10.32 10.9 ~ 285 0
21 NGC 2997 GiG 09 45 38.7542237472 -31 11 27.345810192   9.97 9.41 8.84 9.9 ~ 454 1
22 M 95 GiP 10 43 57.7313485800 +11 42 13.301191332 10.71 10.51 9.73 9.48   ~ 1238 2
23 NGC 3511 EmG 11 03 23.8201544712 -23 05 12.133861188   11.66   10.53 11.1 ~ 182 0
24 NGC 3596 H2G 11 15 06.2081129496 +14 47 13.284196332   12.01 11.49 10.99 10.45 ~ 226 0
25 NGC 3626 GiG 11 20 03.8069651160 +18 21 24.543304164   11.2       ~ 282 0
26 M 66 AGN 11 20 15.0 +12 59 29 9.85 9.65 8.92     ~ 1509 4
27 NGC 4207 GiG 12 15 30.436 +09 35 05.78   13.7       ~ 179 0
28 M 99 H2G 12 18 49.625 +14 24 59.36 10.45 10.44 9.87     ~ 1004 2
29 NGC 4293 LIN 12 21 12.891 +18 22 56.64   11.6       ~ 311 2
30 NGC 4298 GiC 12 21 32.7578814360 +14 36 22.048690716   12.04 11.34     ~ 358 1
31 M 100 AGN 12 22 54.9299993592 +15 49 20.296257960 10.04 10.05 9.35     ~ 1963 2
32 NGC 4424 H2G 12 27 11.5741235616 +09 25 14.330453700   13.1       ~ 407 0
33 NGC 4457 LIN 12 28 59.0252479200 +03 34 14.215556928   11.9       ~ 342 0
34 NGC 4496 GiP 12 31 39.2222392512 +03 56 21.641352828   11.71       ~ 376 0
35 NGC 4535 H2G 12 34 20.3443516704 +08 11 51.908488116   11.1       ~ 679 0
36 NGC 4540 GiG 12 34 50.8741239840 +15 33 06.116283900   12.5       ~ 220 1
37 M 91 LIN 12 35 26.4446761320 +14 29 46.760333748   14.63 13.57     ~ 639 0
38 M 90 Sy2 12 36 49.8009839880 +13 09 46.523813040 10.56 10.26 9.54     ~ 953 1
39 NGC 4571 GiC 12 36 56.3722998960 +14 13 02.296534836   13.6       ~ 368 1
40 NGC 4689 H2G 12 47 45.5568088416 +13 45 46.135889100   12.8       ~ 418 0
41 NGC 4694 AGN 12 48 15.091 +10 59 01.05   13.93 13.36     ~ 302 0
42 NGC 4731 Sy2 12 51 01.095 -06 23 34.98   12.0   16.23 12.0 ~ 197 0
43 NGC 4781 Sy2 12 54 23.7751070304 -10 32 13.803431280   11.8   11.28 11.7 ~ 167 1
44 NGC 4941 Sy2 13 04 13.1036380320 -05 33 05.752803672   13.18 12.23 10.74   ~ 410 0
45 NGC 4951 Sy2 13 05 07.7079609936 -06 29 37.815206856   12.5   11.45 12.1 ~ 106 0
46 NGC 5042 EmG 13 15 31.3408530288 -23 58 56.693694144   12.49   11.21 11.6 ~ 98 0
47 NGC 5068 AG? 13 18 54.807 -21 02 20.76 11.24 10.53 10.01 9.78 10.1 ~ 354 0
48 NGC 5134 EmG 13 25 18.5250908808 -21 08 03.066281880   12.11   10.77 11.3 ~ 127 0
49 M 51 Sy2 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4565 4
50 NGC 5530 AG? 14 18 27.10 -43 23 14.8   11.78 11.00 10.84 11.4 ~ 110 0
51 NGC 5643 Sy2 14 32 40.778 -44 10 28.60   11.03 13.60 9.92 10.6 ~ 652 1
52 NGC 6300 Sy2 17 16 59.5418094960 -62 49 13.946588832   10.88 13.08 9.44 10.2 ~ 478 1
53 NGC 6744 GiG 19 09 46.1335950504 -63 51 26.897079024   9.28 8.25 8.08 9.6 ~ 303 0
54 IC 5273 EmG 22 59 26.719 -37 42 10.36   11.90 11.45 11.07 11.6 ~ 153 0
55 NGC 7456 Sy2 23 02 10.3552289496 -39 34 09.916618440   12.27   11.45 12.0 ~ 118 0
56 NAME Local Group GrG ~ ~           ~ 9325 0

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