SIMBAD references

2016MNRAS.459.2948L - Mon. Not. R. Astron. Soc., 459, 2948-2963 (2016/July-1)

The ultraviolet and infrared star formation rates of compact group galaxies: an expanded sample.

LENKIC L., TZANAVARIS P., GALLAGHER S.C., DESJARDINS T.D., WALKER L.M., JOHNSON K.E., FEDOTOV K., CHARLTON J., HORNSCHEMEIER A.E., DURRELL P.R. and GRONWALL C.

Abstract (from CDS):

Compact groups of galaxies provide insight into the role of low-mass, dense environments in galaxy evolution because the low velocity dispersions and close proximity of galaxy members result in frequent interactions that take place over extended time-scales. We expand the census of star formation in compact group galaxies by Tzanavaris et al. (2010) and collaborators with Swift UVOT, Spitzer IRAC and MIPS 24 µm photometry of a sample of 183 galaxies in 46 compact groups. After correcting luminosities for the contribution from old stellar populations, we estimate the dust-unobscured star formation rate (SFRUV) using the UVOT uvw2 photometry. Similarly, we use the MIPS 24 µm photometry to estimate the component of the SFR that is obscured by dust (SFRIR). We find that galaxies which are MIR-active (MIR-'red'), also have bluer UV colours, higher specific SFRs, and tend to lie in H i-rich groups, while galaxies that are MIR-inactive (MIR-'blue') have redder UV colours, lower specific SFRs, and tend to lie in H i-poor groups. We find the SFRs to be continuously distributed with a peak at about 1 M/yr, indicating this might be the most common value in compact groups. In contrast, the specific SFR distribution is bimodal, and there is a clear distinction between star-forming and quiescent galaxies. Overall, our results suggest that the specific SFR is the best tracer of gas depletion and galaxy evolution in compact groups.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: evolution - galaxies: photometry - galaxies: star formation - galaxies: star formation

VizieR on-line data: <Available at CDS (J/MNRAS/459/2948): groups.dat table3.dat table5.dat table6.dat>

Status in Simbad:  will not be processed

Simbad objects: 94

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2019.12.06-07:33:04

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