2016A&A...587A.136D

Query : 2016A&A...587A.136D

2016A&A...587A.136D - Astronomy and Astrophysics, volume 587A136-136 (2016/3-1)

Star formation activity in Balmer break galaxies at z < 1.5.

DIAZ TELLO J., DONZELLI C., PADILLA N., AKIYAMA M., FUJISHIRO N., YOSHIKAWA T. and HANAMI H.

Abstract (from CDS):

We present a spectroscopic study of the properties of 64 Balmer break galaxies that show signs of star formation. The studied sample of star-forming galaxies spans a redshift range from 0.094 to 1.475 with stellar masses in the range 108-1012M☉. The sample also includes eight broad emission line galaxies with redshifts between 1.5<z<3.0. We derived star formation rates (SFRs) from emission line luminosities and investigated the dependence of the SFR and specific SFR (SSFR) on the stellar mass and color. Furthermore, we investigated the evolution of these relations with the redshift. We found that the SFR correlates with the stellar mass; our data is consistent with previous results from other authors in that there is a break in the correlation, which reveals the presence of massive galaxies with lower SFR values (i.e., decreasing star formation). We also note an anticorrelation for the SSFR with the stellar mass. Again in this case, our data is also consistent with a break in the correlation, revealing the presence of massive star-forming galaxies with lower SSFR values, thereby increasing the anticorrelation. These results might suggest a characteristic mass (M0) at which the red sequence could mostly be assembled. In addition, at a given stellar mass, high-redshift galaxies have on average higher SFR and SSFR values than local galaxies. Finally, we explored whether a similar trend could be observed with redshift in the SSFR-(u-B) color diagram, and we hypothesize that a possible (u-B)0 break color may define a characteristic color for the formation of the red sequence.

Abstract Copyright: ∼

Journal keyword(s): galaxies: evolution - galaxies: star formation - galaxies: high-redshift - galaxies: active - galaxies: stellar content

VizieR on-line data: <Available at CDS (J/A+A/587/A136): tablea1.dat>

Nomenclature: Table A.1: [DDP2016] SXDF JHHMMSS.s+DDMMSS N=72.

Simbad objects: 76

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Number of rows : 76
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 FDF reg 01 06 03.6 -25 45 46           ~ 127 0
2 [DDP2016] SXDF J021710.2-045857 G 02 17 10.200 -04 58 57.54           ~ 1 0
3 CANDELS UDS F160W J021721.39-050958.1 G 02 17 21.400 -05 09 58.02   23.526 23.177 22.759   ~ 6 0
4 [DDP2016] SXDF J021726.4-045955 G 02 17 26.482 -04 59 55.74           ~ 1 0
5 [DDP2016] SXDF J021726.5-045903 G 02 17 26.529 -04 59 03.47           ~ 1 0
6 [DDP2016] SXDF J021727.0-045841 G 02 17 27.069 -04 58 41.44           ~ 1 0
7 [DDP2016] SXDF J021728.9-045943 G 02 17 28.977 -04 59 43.54           ~ 1 0
8 VIPERS 114178229 G 02 17 31.804 -04 53 17.16           ~ 4 0
9 [DDP2016] SXDF J021732.2-045743 G 02 17 32.220 -04 57 43.60           ~ 1 0
10 [DDP2016] SXDF J021732.5-045915 G 02 17 32.519 -04 59 15.53           ~ 1 0
11 [DDP2016] SXDF J021733.8-050038 G 02 17 33.823 -05 00 38.51           ~ 1 0
12 [DDP2016] SXDF J021734.2-050107 G 02 17 34.262 -05 01 07.74           ~ 1 0
13 [DDP2016] SXDF J021734.3-045859 rG 02 17 34.377 -04 58 59.69   25.8037 22.7609 25.0005   ~ 3 0
14 [DDP2016] SXDF J021734.8-050026 G 02 17 34.870 -05 00 26.92           ~ 1 0
15 [DDP2016] SXDF J021735.2-050412 G 02 17 35.299 -05 04 12.10           ~ 1 0
16 [DDP2016] SXDF J021735.8-045555 G 02 17 35.851 -04 55 55.49           ~ 1 0
17 [DDP2016] SXDF J021737.8-050412 G 02 17 37.898 -05 04 12.71           ~ 1 0
18 [DDP2016] SXDF J021739.1-050328 G 02 17 39.118 -05 03 28.72           ~ 1 0
19 [DDP2016] SXDF J021739.4-045913 G 02 17 39.430 -04 59 13.48           ~ 1 0
20 [DDP2016] SXDF J021740.2-045500 G 02 17 40.210 -04 55 00.27           ~ 1 0
21 AS2UDS J021742.15-045628.55 rG 02 17 42.146 -04 56 28.46   22.99839 19.0085 20.72736   ~ 13 0
22 [DDP2016] SXDF J021745.3-050057 G 02 17 45.307 -05 00 57.12           ~ 1 0
23 CANDELS UDS F160W J021745.71-051327.5 G 02 17 45.728 -05 13 27.49   23.174 22.499 21.912   ~ 5 0
24 SDSS J021747.56-051323.5 AGN 02 17 47.567 -05 13 23.51   22.525 22.628 22.620   ~ 8 0
25 [DDP2016] SXDF J021749.3-050713 G 02 17 49.300 -05 07 13.14           ~ 1 0
26 CANDELS UDS F160W J021755.33-051143.1 G 02 17 55.347 -05 11 43.21   23.600 22.989 22.671   ~ 4 0
27 SDSS J021757.30-050808.6 QSO 02 17 57.303 -05 08 08.60           ~ 10 0
28 SDSS J021757.53-045059.2 QSO 02 17 57.5279120064 -04 50 59.322074136   20.81531 20.62230 20.75958   ~ 19 0
29 NAME SXDSF reg 02 18 00 -05 00.0           ~ 237 1
30 [DDP2016] SXDF J021801.5-050504 G 02 18 01.508 -05 05 04.11           ~ 1 0
31 [DDP2016] SXDF J021802.2-045940 G 02 18 02.235 -04 59 40.07           ~ 1 0
32 [DDP2016] SXDF J021802.5-050033 G 02 18 02.516 -05 00 33.06           ~ 1 0
33 CANDELS UDS F160W J021803.15-050856.2 G 02 18 03.140 -05 08 56.12   23.172 22.758 22.140   ~ 6 0
34 [DDP2016] SXDF J021804.9-050250 G 02 18 04.978 -05 02 50.66           ~ 1 0
35 [DDP2016] SXDF J021805.2-050437 G 02 18 05.252 -05 04 37.54           ~ 1 0
36 [DDP2016] SXDF J021806.0-045959 G 02 18 06.008 -04 59 59.87           ~ 1 0
37 [DDP2016] SXDF J021806.9-045912 G 02 18 06.904 -04 59 12.46           ~ 1 0
38 [DDP2016] SXDF J021807.9-045934 G 02 18 07.937 -04 59 34.78           ~ 1 0
39 [DDP2016] SXDF J021810.2-044809 G 02 18 10.200 -04 48 09.01           ~ 1 0
40 [DDP2016] SXDF J021810.2-050424 G 02 18 10.284 -05 04 24.51           ~ 1 0
41 [DDP2016] SXDF J021810.3-044929 G 02 18 10.320 -04 49 29.51           ~ 1 0
42 [DDP2016] SXDF J021810.6-050337 G 02 18 10.688 -05 03 37.92           ~ 1 0
43 [DDP2016] SXDF J021812.3-050307 G 02 18 12.376 -05 03 07.83           ~ 1 0
44 [DDP2016] SXDF J021812.5-050225 G 02 18 12.596 -05 02 25.35           ~ 1 0
45 [DDP2016] SXDF J021812.8-050343 G 02 18 12.898 -05 03 43.90           ~ 1 0
46 [DDP2016] SXDF J021816.7-050104 G 02 18 16.770 -05 01 04.75           ~ 1 0
47 SDSS J021817.20-050258.7 QSO 02 18 17.1978373896 -05 02 58.717923936       20.60   ~ 19 0
48 [UWS2008] 752 AGN 02 18 17.380 -04 59 22.63           ~ 2 0
49 [DDP2016] SXDF J021820.1-050056 G 02 18 20.128 -05 00 56.43           ~ 1 0
50 VIPERS 114146928 G 02 18 21.312 -05 00 50.15           ~ 4 0
51 [DDP2016] SXDF J021821.7-050038 G 02 18 21.777 -05 00 38.25           ~ 1 0
52 [DDP2016] SXDF J021822.6-050508 G 02 18 22.620 -05 05 08.36           ~ 1 0
53 [DDP2016] SXDF J021823.0-050041 G 02 18 23.001 -05 00 41.13           ~ 1 0
54 [DDP2016] SXDF J021823.2-050416 G 02 18 23.275 -05 04 16.77           ~ 1 0
55 [DDP2016] SXDF J021823.4-050116 G 02 18 23.469 -05 01 16.88           ~ 1 0
56 SDSS J021826.23-050505.4 QSO 02 18 26.231 -05 05 05.44           ~ 11 0
57 [DDP2016] SXDF J021827.5-050110 G 02 18 27.501 -05 01 10.15           ~ 1 0
58 [DDP2016] SXDF J021827.8-050139 G 02 18 27.879 -05 01 39.67           ~ 1 0
59 [VSR2009] CVB6 10 GiC 02 18 28.275 -05 00 05.74           ~ 2 0
60 [DDP2016] SXDF J021829.4-050518 G 02 18 29.481 -05 05 18.66           ~ 1 0
61 [DDP2016] SXDF J021830.4-050016 G 02 18 30.475 -05 00 16.18           ~ 2 0
62 [DDP2016] SXDF J021830.6-045951 G 02 18 30.648 -04 59 51.74           ~ 1 0
63 [DDP2016] SXDF J021831.4-050452 G 02 18 31.407 -05 04 52.88           ~ 1 0
64 [VSR2009] CVB6 18 GiC 02 18 33.888 -04 59 41.58           ~ 6 0
65 VIPERS 114187566 G 02 18 34.328 -04 50 49.70           ~ 4 0
66 [DDP2016] SXDF J021836.2-050442 G 02 18 36.292 -05 04 42.84           ~ 1 0
67 [DDP2016] SXDF J021837.4-050432 G 02 18 37.452 -05 04 32.76           ~ 1 0
68 [DDP2016] SXDF J021837.8-050424 G 02 18 37.826 -05 04 24.01           ~ 1 0
69 SDSS J021838.30-045700.5 QSO 02 18 38.304 -04 57 00.56           ~ 10 0
70 VIPERS 114134860 G 02 18 38.831 -05 03 44.28           ~ 5 0
71 [DDP2016] SXDF J021840.6-050415 G 02 18 40.692 -05 04 15.84           ~ 1 0
72 [DDP2016] SXDF J021843.5-045936 G 02 18 43.550 -04 59 36.84           ~ 1 0
73 [DDP2016] SXDF J021846.0-050204 G 02 18 46.020 -05 02 04.21           ~ 1 0
74 [DDP2016] SXDF J021852.0-045541 G 02 18 52.040 -04 55 41.44           ~ 1 0
75 L 595-22 Pe* 05 56 24.7419040752 -27 51 32.361761700   12.31 12.38     sdG 171 0
76 Feige 110 HS* 23 19 58.3996844256 -05 09 56.171142864 10.360 11.45 11.50 11.970 12.145 sdO8VIIIHe5 673 1

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