2015MNRAS.454.1742K


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.10CEST01:48:08

2015MNRAS.454.1742K - Mon. Not. R. Astron. Soc., 454, 1742-1750 (2015/December-1)

Interacting galaxies in the nearby Universe: only moderate increase of star formation.

KNAPEN J.H., CISTERNAS M. and QUEREJETA M.

Abstract (from CDS):

We investigate the influence of interactions on the star formation by studying a sample of almost 1500 of the nearest galaxies, all within a distance of ∼ 45Mpc. We define the massive star formation rate (SFR), as measured from far-IR emission, and the specific star formation rate (SSFR), which is the former quantity normalized by the stellar mass of the galaxy, and explore their distribution with morphological type and with stellar mass. We then calculate the relative enhancement of these quantities for each galaxy by normalizing them by the median SFR and SSFR values of individual control populations of similar non-interacting galaxies. We find that both SFR and SSFR are enhanced in interacting galaxies, and more so as the degree of interaction is higher. The increase is, however, moderate, reaching a maximum of a factor of 1.9 for the highest degree of interaction (mergers). The SFR and SSFR are enhanced statistically in the population, but in most individual interacting galaxies they are not enhanced at all. We discuss how those galaxies with the largest SFR and/or SSFR enhancement can be defined as starbursts. This study is based on a representative sample of nearby galaxies, including many low-mass and dwarf/irregular galaxies, and we argue that it should be used to place constraints on studies based on samples of galaxies at larger distances, beyond the local Universe.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): galaxies: interactions - galaxies: spiral - galaxies: starburst

Simbad objects: 19

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Number of rows : 19

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NGC 520 IG 01 24 35.071 +03 47 32.68 12.41 12.24 11.42     ~ 490 3
2 NGC 1222 SBG 03 08 56.747 -02 57 18.76   13.3   13.0 13.2 ~ 172 0
3 NGC 1482 GiP 03 54 38.928 -20 30 08.82 13.15 13.14 12.15 11.29   ~ 258 2
4 NGC 1808 Sy2 05 07 42.343 -37 30 46.98 11.05 10.80 9.94 9.36 10.2 ~ 653 3
5 NGC 2764 GiG 09 08 17.5019762535 +21 26 36.009522270   13.9       ~ 104 0
6 NGC 2798 GiP 09 17 22.954 +41 59 58.96 13.03 13.04 12.32     ~ 294 3
7 NGC 3094 G 10 01 25.917 +15 46 11.77   13.5       ~ 103 0
8 NGC 3065 GiP 10 01 55.2308741349 +72 10 13.115599850   14.17 13.19     ~ 108 0
9 NGC 3928 AGN 11 51 47.6189114011 +48 40 59.276693861   13.1       ~ 157 0
10 NGC 4194 AGN 12 14 09.615 +54 31 35.93   13.79 13.30     ~ 410 2
11 NGC 4385 AGN 12 25 42.8108150606 +00 34 21.279221919   14.63 14.12 13.1 12.8 ~ 247 0
12 NGC 4355 Sy2 12 26 54.628 -00 52 39.51   14.21 13.37     ~ 409 2
13 NGC 5018 GiP 13 13 01.000 -19 31 05.87   11.71   10.31   ~ 286 1
14 NGC 5078 LIN 13 19 50.024 -27 24 36.30   11.51   10.14 11.1 ~ 99 1
15 NGC 5173 GiP 13 28 25.2817718603 +46 35 29.896777764   13.10       ~ 131 1
16 IC 4553 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 2689 4
17 NGC 6014 G 15 55 57.4089407867 +05 55 55.139745695   13.8       ~ 83 0
18 ESO 402-30 EmG 21 26 44.451 -34 29 56.53   14.30       ~ 26 0
19 NGC 7465 GiP 23 02 00.952 +15 57 53.55   13.3       ~ 259 0

    Equat.    Gal    SGal    Ecl

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2020.08.10-01:48:08

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