2020ApJ...903..145L

Query : 2020ApJ...903..145L

2020ApJ...903..145L - Astrophys. J., 903, 145-145 (2020/November-2)

ALMaQUEST. IV. The ALMA-MaNGA QUEnching and STar formation (ALMaQUEST) survey.

LIN L., ELLISON S.L., PAN H.-A., THORP M.D., SU Y.-C., SANCHEZ S.F., BELFIORE F., BOTHWELL M.S., BUNDY K., CHEN Y.-M., CONCAS A., HSIEH B.-C., HSIEH P.-Y., LI C., MAIOLINO R., MASTERS K., NEWMAN J.A., ROWLANDS K., SHI Y., SMETHURST R., STARK D.V., XIAO T. and YU P.-C.

Abstract (from CDS):

The ALMaQUEST (ALMA-MaNGA QUEnching and STar formation) survey is a program with spatially resolved 12CO(1-0) measurements obtained with the Atacama Large Millimeter Array (ALMA) for 46 galaxies selected from the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) DR15 optical integral-field spectroscopic survey. The aim of the ALMaQUEST survey is to investigate the dependence of star formation activity on the cold molecular gas content at kiloparsec scales in nearby galaxies. The sample consists of galaxies spanning a wide range in specific star formation rate (sSFR), including starburst (SB), main-sequence (MS), and green valley (GV) galaxies. In this paper, we present the sample selection and characteristics of the ALMA observations and showcase some of the key results enabled by the combination of spatially matched stellar populations and gas measurements. Considering the global (aperture-matched) stellar mass, molecular gas mass, and star formation rate of the sample, we find that the sSFR depends on both the star formation efficiency (SFE) and the molecular gas fraction (fH2_), although the correlation with the latter is slightly weaker. Furthermore, the dependence of sSFR on the molecular gas content (SFE or fH2_) is stronger than that on either the atomic gas fraction or the molecular-to-atomic gas fraction, albeit with the small HI sample size. On kiloparsec scales, the variations in both SFE and fH2_ within individual galaxies can be as large as 1-2 dex, thereby demonstrating that the availability of spatially resolved observations is essential to understand the details of both star formation and quenching processes.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Star formation - Interstellar medium - Galaxy quenching - Extragalactic astronomy - Surveys - Molecular gas

VizieR on-line data: <Available at CDS (J/ApJ/903/145): table1.dat table2.dat table3.dat>

Simbad objects: 46

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Number of rows : 46
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 1072 LIN 02 43 31.3173762624 +00 18 24.538526352   14.16       ~ 71 1
2 LEDA 1133291 G 02 46 34.3503458376 -00 50 36.834076212           ~ 19 0
3 MCG+00-08-018 G 02 48 07.8704782464 -00 45 08.309551644   16   14.83   ~ 30 0
4 IC 263 Sy2 02 49 39.9641765304 -00 04 11.572871520   15.04   14.08   ~ 59 0
5 Z 390-14 Sy1 03 11 05.324 -00 32 47.54   15.85   14.75   ~ 52 0
6 Z 390-38 Sy2 03 15 35.1469683456 -01 00 58.653853488   15.5       ~ 43 0
7 Z 390-56 Sy1 03 19 07.7262732912 +00 57 21.362472072   18.33 17.88     ~ 29 0
8 2MASX J03191719-0058108 Sy1 03 19 17.1547034016 -00 58 10.567161408   16   15.73   ~ 29 0
9 LEDA 1176443 G 03 19 22.9705758312 +00 49 24.652028460           ~ 20 0
10 LEDA 1152488 Sy2 03 19 45.6380919960 -00 04 37.924029048   16.36   14.94   ~ 36 0
11 LEDA 1148827 G 03 19 47.8934250528 -00 13 16.138259400           ~ 21 0
12 Z 390-66 Sy2 03 20 33.2184294408 -00 20 23.845838172   15.4       ~ 44 0
13 Z 390-71 AGN 03 20 58.9073286600 -00 22 03.557754048   14.1       ~ 49 0
14 LEDA 1149944 G 03 21 33.929 -00 10 42.12   16.35   14.99   ~ 31 0
15 UGC 2699 G 03 22 00.979 -01 03 14.15   16.5       ~ 45 0
16 LEDA 165365 Sy2 03 22 32.7813530712 -00 00 04.631038164   16.73   15.51   ~ 37 0
17 2MASX J03225800+0003149 Sy1 03 22 57.9855224496 +00 03 14.789775096   18.80 18.05     ~ 25 0
18 Z 390-82 G 03 24 06.5003660520 -01 03 28.252068768   15.7       ~ 38 0
19 Z 390-97 G 03 30 29.1313707888 +00 45 07.385497092   15.4       ~ 35 0
20 Z 391-12 LIN 03 35 15.3778438320 -01 13 43.056843168   15.7       ~ 41 0
21 LEDA 13610 EmG 03 42 22.1499630480 -00 34 59.355529212   16   15.51   ~ 29 0
22 LEDA 176643 Sy2 03 48 58.3158828072 -00 31 15.978152676   16.34   15.03   ~ 31 0
23 LEDA 176677 Sy2 03 50 47.7720143664 -07 01 43.618874808   15.69   14.41   ~ 31 0
24 Z 89-24 G 08 25 50.6833928448 +18 10 00.007087764   15.4       ~ 27 0
25 Z 89-26 G 08 26 16.5373104288 +17 21 44.811685908   15.5       ~ 31 0
26 Z 126-52 G 11 26 59.7153892704 +21 08 29.996954232   15.7       ~ 33 0
27 IC 3949 AGN 12 58 55.952 +27 50 00.40 15.31 15.10 14.26 14.781 14.083 ~ 148 1
28 Z 161-98 LIN 13 38 44.1265252152 +26 19 42.658657680   15.6       ~ 42 0
29 Z 161-111 EmG 13 39 44.1527656224 +27 46 35.297932908   14.9       ~ 49 0
30 Z 373-50 AGN 20 40 52.099 +00 39 10.09   15.52       ~ 73 1
31 MaNGA 1-190574 EmG 20 47 07.4281578624 +00 18 01.721274120           ~ 21 0
32 Z 401-12 EmG 21 15 57.7021616760 +09 32 34.983700368   15.50       ~ 67 0
33 LEDA 1372768 G 21 17 05.149 +09 58 20.32           ~ 29 0
34 LEDA 1157632 G 21 19 40.7311471056 +00 07 15.334994244           ~ 26 0
35 Z 375-28 EmG 21 20 38.266 +01 02 50.20   15.3       ~ 39 0
36 LEDA 1189273 AGN 21 23 18.338 +01 15 17.93           ~ 36 0
37 Z 375-44 G 21 29 13.4469327096 -00 17 41.168532732   15.3       ~ 34 0
38 Z 375-48 AGN 21 30 59.8629597168 -00 00 02.026053360   15.2       ~ 41 0
39 SDSS J213155.32+001249.6 G 21 31 55.327 +00 12 49.56           ~ 24 0
40 Z 428-27 Sy1 22 04 29.4919298760 +12 26 33.419170644   15.3       ~ 33 0
41 NPM1G +11.0527 LIN 22 11 11.6938116384 +11 48 02.673505080           ~ 33 0
42 IC 5177 G 22 11 34.2728016768 +11 47 45.435126912   15.2       ~ 52 0
43 LEDA 3091201 G 22 12 12.4915437432 +12 12 18.734407200           ~ 34 0
44 Z 381-45 Sy2 23 47 00.439 -00 26 50.59   16.42 15.66     ~ 56 0
45 LEDA 1126090 G 23 50 36.42396 -01 07 40.9935           ~ 20 0
46 LEDA 1144739 G 23 52 53.245 -00 22 56.89           ~ 28 0

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