2003ApJ...582..668B

Query : 2003ApJ...582..668B

2003ApJ...582..668B - Astrophys. J., 582, 668-688 (2003/January-2)

Tidally triggered star formation in close pairs of galaxies. II. Constraints on burst strengths and ages.

BARTON GILLESPIE E., GELLER M.J. and KENYON S.J.

Abstract (from CDS):

Galaxy-galaxy interactions rearrange the baryons in galaxies and trigger substantial star formation; the aggregate effects of these interactions on the evolutionary histories of galaxies in the universe are poorly understood. We combine B- and R-band photometry and optical spectroscopy to estimate the strengths and timescales of bursts of triggered star formation in the centers of 190 galaxies in pairs and compact groups. Based on an analysis of the measured colors and EW(Hα), we characterize the preexisting and triggered populations separately. The best-fitting burst scenarios assume stronger reddening corrections for line emission than for the continuum and continuous star formation lasting for ≳100 Myr. The most realistic scenarios require an initial mass function that is deficient in the highest mass stars. The color of the preexisting stellar population is the most significant source of uncertainty. Triggered star formation contributes substantially (probably ≳50%) to the R-band flux in the central regions of several galaxies; tidal tails do not necessarily accompany this star formation. Many of the galaxies in our sample have bluer centers than outskirts, suggesting that pre- or nonmerger interactions may lead to evolution along the Hubble sequence. These objects would appear blue and compact at higher redshifts; the older, redder outskirts of the disks would be difficult to detect. Our data indicate that galaxies with larger separations on the sky contain weaker, and probably older, bursts of star formation on average. However, confirmation of these trends requires further constraints on the colors of the older stellar populations and on the reddening for individual galaxies.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Evolution - Galaxies: Fundamental Parameters - Galaxies: Interactions - Galaxies: Kinematics and Dynamics - Galaxies: Structure

VizieR on-line data: <Available at CDS (J/ApJ/582/668): table1.dat>

Nomenclature: Table 1: [BGK2003] BHHMMSS.s+DDMMSS N=190.

Simbad objects: 196

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Number of rows : 196
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 7805 GiP 00 01 26.7746361744 +31 26 01.292844372   14.3       ~ 59 0
2 NGC 7806 GiP 00 01 30.0514235496 +31 26 30.863324400   14.4       ~ 68 0
3 UGC 12914 LIN 00 01 38.3220061296 +23 29 01.190922432   13.2       ~ 150 1
4 UGC 12915 GiP 00 01 41.937 +23 29 45.20   13.9       ~ 120 1
5 UGC 46 PaG 00 06 21.4 +17 26 03           ~ 9 0
6 UGC 46 B GiP 00 06 21.4765716192 +17 25 48.771799284   16       ~ 9 0
7 UGC 46 A GiP 00 06 21.740 +17 26 15.49   14.5       ~ 11 0
8 IC 1534 GiG 00 13 45.4290207456 +48 09 04.567064796   15.2       ~ 17 0
9 IC 1535 GiG 00 13 57.3474499008 +48 09 28.796299488   15.2       ~ 25 0
10 [BGK2003] B001752.0-003255 GiP 00 20 25.7 -00 16 16           ~ 1 0
11 [BGK2003] B001753.7-003321 GiP 00 20 27.4 -00 16 42           ~ 1 0
12 MCG+05-02-001 GiP 00 21 13.2867245352 +30 28 27.789357144   15.2       ~ 20 0
13 MCG+05-02-002 GiP 00 21 16.0336540896 +30 30 21.692290464   15.3       ~ 19 0
14 Mrk 552 GiG 00 31 18.844 +08 28 30.33   15.0   13.40   ~ 76 0
15 UGC 312 AGN 00 31 23.840 +08 28 01.32   14.6   13.10   ~ 104 0
16 NGC 181 GiP 00 38 23.2168782960 +29 28 20.989561044   15.4       ~ 31 0
17 NGC 184 GiP 00 38 35.7976360032 +29 26 51.279721656   15.5       ~ 25 0
18 [BGK2003] B003639.5-003520 GiG 00 39 13.2 -00 18 51           ~ 1 0
19 [BGK2003] B003643.9-003814 GiG 00 39 17.6 -00 21 45           ~ 1 0
20 [BGK2003] B003644.8-003702 GiG 00 39 18.5 -00 20 33           ~ 1 0
21 UGC 418 GiP 00 39 37.674 +08 57 55.10   15.2       ~ 45 0
22 UGC 422 GiP 00 39 43.1710798992 +09 00 18.637819596   15.0       ~ 26 0
23 UGC 484 GiP 00 46 56.0222630808 +32 40 31.127024964   13.86       ~ 67 1
24 MCG+05-03-003 GiP 00 47 10.4 +32 41 37   15.1       ~ 19 0
25 UGC 644 GiP 01 03 18.1380720672 +14 02 15.552769884   14.5       ~ 34 0
26 UGC 644 S GiP 01 03 20.3991128712 +14 01 52.660328520   15       ~ 14 0
27 IC 1620W GiP 01 07 09.9567367872 +13 57 15.792763860   15       ~ 7 0
28 IC 1620 GiP 01 07 14.2439343480 +13 57 18.380819196   14.2       ~ 42 0
29 MCG+08-03-011 GiG 01 16 04.4785272600 +46 43 49.763257320   15.1       ~ 26 0
30 UGC 813 GiG 01 16 16.614 +46 44 23.50   14.6       ~ 51 1
31 VV 769 PaG 01 16 18.3 +46 44 35           ~ 42 1
32 UGC 816 GiG 01 16 20.5621583712 +46 44 52.472704488   15.0 13.65 13.19 13.00 ~ 51 1
33 Mrk 984 LIN 01 19 24.1283812104 +12 26 48.703034076   16.44 15.96     ~ 43 1
34 MCG+02-04-022 GiP 01 19 24.5861965632 +12 27 42.832475532   15.2       ~ 21 1
35 NGC 470 GiP 01 19 44.8526263032 +03 24 36.027176544 12.63 12.53 11.78     ~ 275 1
36 NGC 474 GiP 01 20 06.6870520512 +03 24 55.861973100 12.75 12.37 11.51 11.42 10.56 ~ 355 1
37 MCG+07-03-031 GiG 01 21 09.297 +40 28 12.98   14.0       ~ 24 0
38 NGC 477 Sy2 01 21 20.3410541880 +40 29 17.414141208   14.0       ~ 102 0
39 UGC 2784 GiG 03 34 19.4498374344 +39 32 44.568429540       8.250   ~ 23 1
40 2MASX J03341957+3935382 GiG 03 34 19.5376949160 +39 35 37.919887656   15.0       ~ 27 0
41 MCG+03-21-015 GiG 08 06 52.1101838160 +18 44 15.961077384   15.0       ~ 17 0
42 MCG+03-21-017 GiG 08 07 06.658 +18 45 50.60   15.2       ~ 9 0
43 UGC 4257 GiG 08 10 11.233 +24 53 35.01   15.61 15.06 14.55 13.97 ~ 58 0
44 NGC 2535 rG 08 11 13.484 +25 12 24.97   13.5 12.60     ~ 178 0
45 APG 82 PaG 08 11 14.0 +25 12 25           ~ 146 0
46 NGC 2536 GiP 08 11 15.9239979960 +25 10 45.549680232   14.8 13.93     ~ 91 0
47 2MASX J08112548+0853382 GiP 08 11 25.4888271264 +08 53 38.108640696   15.2       ~ 17 0
48 2MASX J08112703+0856280 GiP 08 11 27.036 +08 56 28.06   15.3       ~ 22 0
49 2MASX J08194129+2202311 H2G 08 19 41.2721499024 +22 02 30.892988328   15.5       ~ 29 0
50 NGC 2565 GiG 08 19 48.3010303872 +22 01 53.130704844   13.8       ~ 123 0
51 IC 2338 rG 08 23 32.6810743032 +21 20 16.898027244   14.7       ~ 68 0
52 IC 2339 AG? 08 23 34.2173971584 +21 20 51.537659028   14.7       ~ 43 0
53 MCG+05-21-013 IG 08 51 00.059 +29 10 54.81   15.5 15.03     ~ 24 0
54 [BGK2003] B084759.2+292157 GiP 08 51 00.6 +29 10 42           ~ 2 0
55 IC 2421 GiP 08 54 21.597 +32 40 51.07   14.9       ~ 51 0
56 MCG+06-20-013a GiP 08 54 29.434 +32 38 07.89   14.6       ~ 19 0
57 NGC 2719 LSB 09 00 15.7319130000 +35 43 39.222492060   13.7       ~ 74 0
58 MCG+06-20-018 GiP 09 00 16.010 +35 43 12.79   14       ~ 36 0
59 NGC 2735 GiP 09 02 38.6497937784 +25 56 04.177653216   14.2       ~ 72 0
60 MCG+04-22-003 GiP 09 02 41.8643186280 +25 56 18.327051060   14.2       ~ 17 0
61 NGC 2738 rG 09 04 00.4726807901 +21 58 03.336561047   13.8       ~ 58 0
62 Z 121-11 GiG 09 04 04.783 +22 03 41.65   15.4       ~ 20 0
63 IC 2441 GiG 09 10 01.8131495400 +22 51 18.126311940   15.3       ~ 14 0
64 IC 2441C GiG 09 10 02.8977367560 +22 51 06.385068468   15.3       ~ 11 0
65 IC 2442 GiP 09 10 05.1923756928 +22 50 17.945415708   15.2       ~ 14 0
66 2MASX J09100936+2250187 GiC 09 10 09.338 +22 50 18.58           ~ 10 0
67 UGC 4867 LSB 09 14 43.140 +40 52 46.31   15.2       ~ 53 0
68 NGC 2785 GiP 09 15 15.3411609600 +40 55 02.919730404   14.9       ~ 79 1
69 NGC 2830 Sy2 09 19 41.3832758544 +33 44 17.056851036   15.4   14.20   ~ 91 0
70 NGC 2831 rG 09 19 45.4837813104 +33 44 42.011689848   14.27 14.7     ~ 53 0
71 NGC 2832 BiC 09 19 46.853 +33 44 59.07   13.3 13.17     ~ 264 3
72 MCG+07-20-001 GiP 09 24 13.8372609480 +40 38 14.837708688   15.4       ~ 9 0
73 MCG+07-20-002 LIN 09 24 21.7496382336 +40 37 27.883792020   15.4       ~ 15 0
74 UGC 5044 IG 09 27 43.5280114656 +12 17 15.099939096   15.43   13.87   ~ 58 1
75 MCG+02-24-014 GiP 09 27 44.51949 +12 17 17.4712   16.09   14.62   ~ 22 0
76 NGC 2911 Sy2 09 33 46.10739467 +10 09 08.8215304   14.96 13.83     ~ 244 0
77 UGC 5093 GiG 09 34 00.132 +10 01 46.32   14.9       ~ 41 0
78 NGC 2914 LIN 09 34 02.7855845040 +10 06 31.380212052   13.7       ~ 67 0
79 MCG+06-21-068 Sy1 09 39 17.2551987048 +36 33 43.997168556   17.24 16.30     ~ 36 0
80 MCG+06-21-069 EmG 09 39 22.3860663936 +36 34 28.579161612   15.4       ~ 25 0
81 NGC 2988 GiP 09 46 47.967 +22 00 43.58   14.3       ~ 11 0
82 NGC 2991 GiP 09 46 50.1188628144 +22 00 50.151268332   14.3       ~ 29 0
83 2MASX J09530347+1926331 GiP 09 53 03.4486351584 +19 26 33.234770076           ~ 16 0
84 NGC 3040 GiP 09 53 05.0993013384 +19 25 55.854431004   14.2       ~ 23 0
85 2MASX J09550844+1417286 GiP 09 55 08.4328876080 +14 17 29.154086016   15.1       ~ 21 0
86 2MASX J09551395+1417576 GiP 09 55 13.9484059152 +14 17 57.382838736   15.4       ~ 23 0
87 IC 582 AGN 09 59 00.2193014952 +17 49 01.724686536   14.7       ~ 38 0
88 IC 583 AGN 09 59 05.0868755352 +17 49 17.510598408   15.2       ~ 23 0
89 UGC 5436 GiP 10 05 21.7840302552 +19 17 10.287950352   14.3       ~ 31 0
90 MCG+03-26-022 GiP 10 05 23.063 +19 16 18.70   15.2       ~ 15 0
91 UGC 5498 Sy2 10 12 03.664 +23 05 07.58   15.3       ~ 43 0
92 2MASX J10120623+2305221 GiP 10 12 06.20 +23 05 20.8           ~ 5 0
93 UGC 5625 GiP 10 23 48.519 +12 37 47.38   15.2       ~ 25 0
94 2MASX J10240735+1337038 LIN 10 24 07.3382721312 +13 37 03.927876024   15.2       ~ 19 0
95 APG 294 GrG 11 39.7 +31 55           ~ 260 0
96 NGC 3786 Sy2 11 39 42.5121341928 +31 54 33.971791752   14.62 13.74     ~ 393 1
97 NGC 3788 GiP 11 39 44.5783762224 +31 55 52.367128392   13.30 12.50     ~ 134 1
98 NGC 3799 LIN 11 40 09.3859877328 +15 19 38.408206368   14.4       ~ 72 0
99 NGC 3800 GiG 11 40 13.5 +15 20 33   13.1       ~ 100 0
100 NGC 3991 EmG 11 57 30.465 +32 20 03.00   13.8       ~ 156 1
101 2MASX J11573142+3220279 H2G 11 57 31.62 +32 20 27.8           ~ 25 0
102 NGC 3994 LIN 11 57 36.8662975416 +32 16 39.447161112   13.51 12.87     ~ 196 1
103 NGC 3993 EmG 11 57 37.837 +25 14 26.17   14.8       ~ 59 0
104 NGC 3995 rG 11 57 44.098 +32 17 38.64   12.81       ~ 166 0
105 NGC 3997 EmG 11 57 48.226 +25 16 14.21   14.3       ~ 97 1
106 UGC 7085 W GiP 12 05 36.3940784496 +08 59 15.698622300   15.0       ~ 21 0
107 UGC 7085 GiP 12 05 42.3482907288 +08 59 22.481113848   14.8       ~ 32 0
108 NGC 4132 GiP 12 09 01.4043628200 +29 15 00.375653772   14.6 13.99     ~ 52 0
109 NGC 4134 LIN 12 09 10.0033415256 +29 10 36.781347720   13.8 13.10     ~ 74 0
110 NGC 4169 Sy2 12 12 18.7701840312 +29 10 45.851425968   12.9 12.34 11.67   ~ 142 1
111 NGC 4174 Sy2 12 12 26.8876661016 +29 08 57.158312172   14.3 13.64 13.05   ~ 109 2
112 NGC 4175 AGN 12 12 31.086 +29 10 08.06   14.2 13.45 12.71   ~ 115 0
113 NGC 4613 EmG 12 41 28.9394966328 +26 05 18.980762784   15.5       ~ 44 0
114 NGC 4614 Sy1 12 41 31.4656424088 +26 02 33.676303884   14.2       ~ 76 0
115 NGC 4615 EmG 12 41 37.3165133424 +26 04 22.103980284   13.8       ~ 131 0
116 IC 819 AGN 12 46 10.1 +30 43 55           ~ 277 1
117 IC 820 AGN 12 46 11.2495347624 +30 43 21.856578924   14.1       ~ 123 1
118 IC 3990 GiP 12 59 39.1074596328 +28 53 43.941436692   15.0 14.00     ~ 47 0
119 IC 3991 EmG 12 59 39.7858498152 +28 55 35.657411016   15.5 14.36 14.34   ~ 33 0
120 MCG+07-27-056 GiP 13 16 06.194 +41 30 04.25   15.2       ~ 27 0
121 Mrk 1477 EmG 13 16 14.7080696663 +41 29 40.131281441   15.4       ~ 37 0
122 NGC 5177 EmG 13 29 24.2798258256 +11 47 49.369542036   15.4       ~ 40 0
123 NGC 5176 GiG 13 29 24.9659424024 +11 46 53.307080688   15.4       ~ 32 0
124 NGC 5296 GiP 13 46 18.6480301296 +43 51 04.765848516   15.0       ~ 60 0
125 NGC 5297 GiP 13 46 23.694 +43 52 19.34   12.3       ~ 170 0
126 IC 944 GiP 13 51 30.897 +14 05 31.66   14.7       ~ 78 0
127 MCG+02-35-020 GiP 13 51 32.9626582632 +14 06 39.005981532   15.4       ~ 19 0
128 NGC 5353 GiP 13 53 26.6998 +40 16 58.872   11.8   10.57   ~ 288 1
129 NGC 5354 LIN 13 53 26.7262413240 +40 18 09.928163700   12.3   10.64   ~ 158 0
130 2MFGC 11284 AGN 13 58 23.024 +22 53 16.81   15.1       ~ 19 0
131 2MASX J13582468+2255378 EmG 13 58 24.686 +22 55 37.82   15.0       ~ 17 0
132 2MFGC 11293 Sy2 13 58 35.1273992088 +28 50 52.067699700   16.38 15.41     ~ 18 0
133 2MASX J13583796+2851571 LIN 13 58 37.9722945240 +28 51 57.169596996   16.10 15.26     ~ 21 0
134 NGC 5403 GiP 13 59 50.756 +38 10 56.28   14.9   11.80   ~ 74 0
135 UGC 8919 N GiP 13 59 57.0517446506 +38 12 02.856723851   16   13.60   ~ 27 0
136 UGC 9110 LIN 14 14 13.3919549352 +15 37 20.658531504   14.0       ~ 51 0
137 2MASX J14142733+1536422 GiP 14 14 27.3729433248 +15 36 42.265683900   15.3       ~ 29 0
138 NGC 5730 GiP 14 39 52.1803415808 +42 44 32.817244524   14.7       ~ 82 0
139 NGC 5731 GiP 14 40 09.206 +42 46 46.38   14.0       ~ 57 0
140 Mrk 827 GiP 14 50 39.420 +42 44 27.42   14.6       ~ 44 0
141 Mrk 828 GiP 14 50 43.7373988296 +42 46 02.779518288   15.5       ~ 25 0
142 MCG+02-38-043 GiG 15 06 46.381 +12 51 01.12   15.3       ~ 29 0
143 NGC 5851 LIN 15 06 53.3823437112 +12 51 31.291992072   14.9       ~ 58 0
144 NGC 5852 LIN 15 06 56.4127 +12 50 48.613   14.7       ~ 46 0
145 NGC 5857 Sy2 15 07 27.2947029936 +19 35 51.873280440   13.99 13.11     ~ 64 0
146 NGC 5859 LIN 15 07 34.750 +19 34 56.21   13.10 12.47     ~ 90 0
147 NGC 5934 LIN 15 28 12.7256314392 +42 55 47.533609668   14.5       ~ 63 0
148 NGC 5935 LIN 15 28 16.6938591072 +42 56 38.773484448   15.1       ~ 33 0
149 IC 4564 SBG 15 36 27.0561176760 +43 31 07.470441912   14.4       ~ 49 0
150 IC 4566 LIN 15 36 42.1586294592 +43 32 21.525766872   14.3       ~ 88 0
151 UGC 10052 Sy2 15 49 57.3357785616 +20 48 18.623608452   14.4       ~ 31 0
152 MCG+04-37-041 GiP 15 49 59.3823873696 +20 48 20.148683688   14.4       ~ 7 0
153 MCG+07-33-016 GiP 15 56 33.0053700744 +41 53 53.264437332   15.0       ~ 12 0
154 NVSS J155636+415250 rG 15 56 36.399 +41 52 50.56   14.3       ~ 66 0
155 NVSS J160243+411150 rG 16 02 42.5717019456 +41 11 49.877531304   14.5       ~ 56 2
156 MCG+07-33-030 G 16 02 44.758 +41 11 58.94   14       ~ 15 0
157 SDSS J160426.50+174431.1 LIN 16 04 26.5009 +17 44 31.168   14.6       ~ 58 1
158 NGC 6040 LIN 16 04 26.7272564952 +17 45 01.162876140   14.6       ~ 64 0
159 2MASX J16044810+1407441 LIN 16 04 48.0944048760 +14 07 43.942417536   15.2       ~ 27 0
160 2MASX J16045793+1408148 EmG 16 04 57.9142724160 +14 08 15.235416348   15.4       ~ 27 0
161 NGC 6045 LIN 16 05 07.8833893968 +17 45 27.697067136   14.8       ~ 107 0
162 NGC 6047 rG 16 05 08.9880545352 +17 43 47.574625512   15.4       ~ 115 1
163 UGC 10197 GiP 16 06 04.439 +20 48 05.28   15.2       ~ 20 1
164 UGC 10198 GiP 16 06 05.936 +20 47 03.28   15.2       ~ 12 1
165 NGC 6276 GiP 17 00 44.982 +23 02 38.43   15.2       ~ 22 1
166 NGC 6278 GiP 17 00 50.3235598776 +23 00 39.735179064   13.8       ~ 159 0
167 NGC 6927 GiP 20 32 38.1875096712 +09 54 58.767151032   15.6       ~ 19 0
168 NGC 6928 GiP 20 32 50.222 +09 55 35.15   13.7       ~ 78 0
169 2MASX J20392206+0205082 GiG 20 39 22.068 +02 05 08.24   15.2       ~ 11 0
170 MCG+00-52-043 GiP 20 39 26.404 +02 01 06.97   15.2       ~ 26 0
171 MCG+03-54-002 GiP 21 08 21.2297828496 +18 12 00.808216308   14.9       ~ 20 0
172 UGC 11683 GiP 21 08 26.7034831152 +18 11 28.408551360   15.3       ~ 39 0
173 Mrk 517 PaG 21 56 56.2941787488 +06 38 54.236736564   14.8       ~ 13 0
174 2MASX J21565837+0639239 GiP 21 56 58.3832036160 +06 39 24.123340260           ~ 9 0
175 IC 1441 GiG 22 15 19.131 +37 18 05.42   15.3       ~ 27 0
176 NGC 7240 GiP 22 15 22.5555422832 +37 16 50.436180696   15       ~ 19 0
177 NGC 7253 AG? 22 19 27.700 +29 23 44.85   14.4       ~ 82 0
178 UGC 11985 GiP 22 19 30.17 +29 23 16.7   14.4       ~ 52 0
179 UGC 12011 PaG 22 23 00.6 +30 55 23   14.0       ~ 22 0
180 KPG 567a GiP 22 23 01.399 +30 55 29.24   14.0       ~ 15 0
181 2MASX J22230240+3055272 GiP 22 23 02.4128828136 +30 55 27.038370576   14.0       ~ 10 0
182 UGC 12265 S GiP 22 57 35.1091157304 +19 46 57.635587092   16.08       ~ 17 0
183 UGC 12265 PaG 22 57 35.6 +19 47 12           ~ 30 0
184 UGC 12265 N GiP 22 57 35.976 +19 47 25.66   14.5       ~ 43 0
185 NGC 7537 GiP 23 14 34.5173585112 +04 29 54.054910824   13.8       ~ 211 0
186 NGC 7541 GiP 23 14 43.857 +04 32 02.04   12.7       ~ 320 1
187 UGC 12543 GiG 23 21 33.4108458408 +27 07 06.756458592   15.4       ~ 40 0
188 UGC 12546 GiG 23 21 41.1792473184 +27 05 14.327449512   15.3       ~ 31 0
189 UGC 12545 GiG 23 21 41.8764956832 +27 04 14.532820356   15.3       ~ 30 0
190 UGC 12544 GiG 23 21 45.10 +09 04 40.0   15.5       ~ 31 0
191 NGC 7731 GiP 23 41 29.0818350168 +03 44 24.025713540   14.3       ~ 82 0
192 NGC 7732 GiP 23 41 33.852 +03 43 29.83   14.5       ~ 88 0
193 UGC 12812 GiP 23 51 18.628 +20 34 40.92   15.5       ~ 41 0
194 NGC 7770 GiG 23 51 22.610 +20 05 48.56   14.5       ~ 101 1
195 NGC 7771 GiG 23 51 24.880 +20 06 42.57 13.42 13.08 12.25     ~ 338 4
196 Mrk 331 GiP 23 51 26.731 +20 35 10.22   14.9       ~ 227 0

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