2011ApJ...734L..22W

Query : 2011ApJ...734L..22W

2011ApJ...734L..22W - Astrophys. J., 734, L22 (2011/June-2)

The history of star formation in galaxy disks in the local volume as measured by the Advanced Camera for Surveys Nearby Galaxy Survey Treasury.

WILLIAMS B.F., DALCANTON J.J., JOHNSON L.C., WEISZ D.R., SETH A.C., DOLPHIN A., GILBERT K.M., SKILLMAN E., ROSEMA K., GOGARTEN S.M., HOLTZMAN J. and DE JONG R.S.

Abstract (from CDS):

We present a measurement of the age distribution of stars residing in spiral disks and dwarf galaxies. We derive a complete star formation history of the ∼140 Mpc3 covered by the volume-limited sample of galaxies in the Advanced Camera for Surveys (ACS) Nearby Galaxy Survey Treasury (ANGST). The total star formation rate density history (ρSFR(t)) is dominated by the large spirals in the volume, although the sample consists mainly of dwarf galaxies. Our ρSFR(t) shows a factor of ∼3 drop at z ∼ 2, in approximate agreement with results from other measurement techniques. While our results show that the overall ρSFR(t) has decreased since z ∼ 1, the measured rates during this epoch are higher than those obtained from other measurement techniques. This enhanced recent star formation rate appears to be largely due to an increase in the fraction of star formation contained in low-mass disks at recent times. Finally, our results indicate that despite the differences at recent times, the epoch of formation of ∼50% of the stellar mass in dwarf galaxies was similar to that of ∼50% of the stellar mass in large spiral galaxies (z ≳ 2), despite the observed galaxy-to-galaxy diversity among the dwarfs.

Abstract Copyright: ∼

Journal keyword(s): cosmology: observations - galaxies: evolution - galaxies: stellar content

VizieR on-line data: <Available at CDS (J/ApJ/734/L22): table1.dat>

Simbad objects: 73

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Number of rows : 73
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NGC 55 GiG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 778 2
2 ESO 410-5 LSB 00 15 31.21 -32 10 49.9   15.32 14.9 14.58   ~ 112 1
3 NAME Sculptor dE1 GiG 00 23 51.7 -24 42 18   17.73       ~ 69 1
4 ESO 294-10 AG? 00 26 33.37 -41 51 19.1   15.76 15.3 14.97   ~ 111 2
5 NGC 247 LSB 00 47 08.554 -20 45 37.44 10.11 9.61 9.10 8.87   ~ 441 2
6 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3336 2
7 ESO 540-30 AG? 00 49 20.96 -18 04 31.5   16.45   15.33   ~ 86 1
8 ESO 540-31 G 00 49 49.3 -21 00 58 16.11 15.64 15.36 14.8 15.5 ~ 133 1
9 ESO 540-32 LSB 00 50 24.5 -19 54 23 17.44 16.54 16.01 15.70   ~ 75 1
10 NGC 300 GiG 00 54 53.4465638304 -37 41 03.168402396 8.83 8.69 8.13 7.46   ~ 1503 2
11 NGC 404 LIN 01 09 27.02 +35 43 05.3   12.56 11.73     ~ 473 0
12 LEDA 95597 LSB 06 47 45.6 +80 07 27   16.4       ~ 72 0
13 NGC 2366 H2G 07 28 52.4529 +69 12 38.859 12.25 11.86 11.39 11.33   ~ 769 0
14 UGCA 133 G 07 34 11.5 +66 52 47 16.40 15.48 14.80 14.76   ~ 84 0
15 NGC 2403 AGN 07 36 51.3381434280 +65 36 09.650825640 9.31 8.84 8.38 8.19   ~ 1789 1
16 UGC 4305 IG 08 19 04.9864630512 +70 43 13.086910452 12.06 11.72 11.39 11.11   ~ 769 2
17 NAME M 81 Dwarf A G 08 23 55.1 +71 01 56   16.5       ~ 203 1
18 UGC 4459 GiG 08 34 07.20 +66 10 54.0 15.39 15.03 14.70 14.49   ~ 338 2
19 UGC 4483 GiG 08 37 03.00 +69 46 31.0 15.70 15.46 14.98 14.89   ~ 303 0
20 UGC 5139 LSB 09 40 32.33 +71 10 56.0 14.53 14.00 13.66 13.41   ~ 356 1
21 NAME F8D1 G 09 44 47.1 +67 26 19   14.60 13.85     ~ 70 0
22 NAME F6D1 GiG 09 45 10.0 +68 45 54   17.5       ~ 50 0
23 NGC 2976 GiP 09 47 15.458 +67 54 58.97 11.77 11.03 10.16 9.51   ~ 673 1
24 NAME F12D1 G 09 50 10.0 +67 30 24   15.6       ~ 55 1
25 LEDA 28529 G 09 53 48.8 +68 58 09   18.89       ~ 93 1
26 NAME M 81-82 Group GrG 09 55 +69.1           ~ 717 0
27 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4450 3
28 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5860 6
29 LEDA 28731 G 09 57 03.0 +68 35 31   15.17       ~ 114 1
30 NAME Arp Loop G 09 57 29.0 +69 16 20           ~ 67 1
31 UGC 5336 AG? 09 57 32.8632 +69 02 50.735 15.19 15.15 14.10 14.12   ~ 316 4
32 NAME Sextans B H2G 10 00 00.8217342072 +05 20 09.533389560 12.77 12.25 11.89 11.71   ~ 528 0
33 LEDA 2807133 GiG 10 00 16.0 +63 11 05           ~ 39 1
34 NGC 3109 AG? 10 03 06.877 -26 09 34.46 11.10 10.42 10.04 9.91   ~ 769 2
35 NGC 3077 GiP 10 03 19.0965510921 +68 44 01.556166166 11.23 10.85 10.14 9.74   ~ 771 0
36 NAME Antlia Dwarf Galaxy G 10 04 03.9 -27 20 01 16.73 15.69 15.17 15.00   ~ 212 1
37 LEDA 29231 G 10 04 40.3 +68 15 20   17.43 16.72     ~ 74 0
38 UGC 5428 AG? 10 05 06.40 +66 33 32.0 17.89 16.82 16.09 15.73   ~ 106 1
39 UGC 5442 AG? 10 07 01.90 +67 49 39.0 17.09 15.73 15.07 14.81   ~ 89 1
40 NAME IKN G 10 08 05.9 +68 23 57           ~ 74 0
41 NAME Sex A H2G 10 11 00.5 -04 41 30 12.48 12.13 11.93 11.78   ~ 727 2
42 LEDA 4689216 GiG 10 21 25.2 +71 06 58           ~ 59 0
43 LEDA 30664 G 10 26 28.0 +67 39 35   15.8       ~ 81 1
44 IC 2574 AG? 10 28 23.6148831408 +68 24 43.440012756 11.70 11.07 10.87 10.74   ~ 665 1
45 UGC 5692 GiG 10 30 35.03 +70 37 07.2 14.81 13.69 13.01 12.73   ~ 131 0
46 LEDA 31286 G 10 34 31.9 +66 00 42   16.7       ~ 51 1
47 LEDA 32667 LSB 10 52 55.1 +69 32 46   17.2       ~ 86 1
48 NGC 3741 AG? 11 36 05.754 +45 17 02.96 15.01 14.55 14.23 14.06   ~ 220 0
49 UGC 6817 AG? 11 50 52.984 +38 52 50.92   13.72 13.9 13.39   ~ 166 0
50 NGC 4163 LSB 12 12 09.34 +36 10 08.1 14.33 13.70 13.2 12.98   ~ 222 0
51 NGC 4190 LSB 12 13 44.765 +36 38 02.49 13.88 13.40 13.25 12.86   ~ 211 0
52 ESO 321-14 AG? 12 13 48.8792 -38 14 00.250 16.32 15.70 15.35 15.20 15.2 ~ 88 0
53 UGCA 276 G 12 14 57.9 +36 13 07 17.66 16.85 16.22 15.92   ~ 100 1
54 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 965 1
55 Z 269-49 AG? 12 15 46.626 +52 23 13.91   15.3       ~ 70 0
56 UGC 7577 GiG 12 27 40.90 +43 29 44.0 13.75 13.10 12.7 12.33   ~ 255 0
57 NAME Hubble Deep Field reg 12 36 49.5 +62 12 58           ~ 1922 1
58 NAME CVn I dwA GiC 12 38 40.06 +32 46 00.5 16.91 16.66 16.73 16.62   ~ 232 0
59 UGC 8091 H2G 12 58 40.1930636208 +14 13 00.739589628 15.24 15.16 14.98 14.81   ~ 463 0
60 NAME Cen A Group GrG 13 20 33.9 -44 58 51           ~ 263 0
61 UGC 8508 AG? 13 30 44.8682655624 +54 54 38.522749824 14.72 14.25 13.90 13.75   ~ 195 0
62 UGC 8651 AG? 13 39 53.75 +40 44 25.3 15.37 14.56 14.20 14.10   ~ 155 0
63 UGC 8760 AG? 13 50 51.3127548768 +38 01 14.958828876 15.56 14.78   14.33   ~ 148 0
64 LEDA 2807150 LSB 13 54 33.356 +04 14 39.66   16.8 17.1     ~ 84 0
65 UGC 8833 AG? 13 54 48.8114 +35 50 07.775   16.5   15.20   ~ 117 1
66 LEDA 166185 G 14 07 10.1 +35 03 37   16.9 17.2     ~ 90 0
67 UGC 9128 AG? 14 15 57.0834 +23 03 29.871 15.40 14.77 14.41 14.32   ~ 283 0
68 UGC 9240 AG? 14 24 43.21 +44 31 41.8 14.24 13.54 13.17 13.07   ~ 200 0
69 LEDA 2801026 LSB 16 13 47.504 +54 22 08.25     15.9     ~ 108 0
70 IC 5152 AG? 22 02 41.521 -51 17 47.20   11.03 10.9 10.19   ~ 252 1
71 ESO 407-18 G 23 26 27.52 -32 23 19.5 15.34 14.71 14.23 14.03   ~ 155 0
72 LEDA 2807157 GiG 23 45 35.177 +38 43 05.09   16.7 15.2     ~ 89 1
73 NAME Local Group GrG ~ ~           ~ 8391 0

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