SIMBAD references

2017MNRAS.464..666B - Mon. Not. R. Astron. Soc., 464, 666-679 (2017/January-1)

The Void Galaxy Survey: photometry, structure and identity of void galaxies.

BEYGU B., PELETIER R.F., VAN DER HULST J.M., JARRETT T.H., KRECKEL K., VAN DE WEYGAERT R., VAN GORKOM J.H. and ARAGON-CALVO M.A.

Abstract (from CDS):

We analyse photometry from deep B-band images of 59 void galaxies in the Void Galaxy Survey (VGS), together with their near-infrared 3.6 µm and 4.5 µm Spitzer photometry. The VGS galaxies constitute a sample of void galaxies that were selected by a geometric-topological procedure from the Sloan Digital Sky Survey Data Release 7 data release, and which populate the deep interior of voids. Our void galaxies span a range of absolute B-magnitude from MB = -15.5 to -20, while at the 3.6 µm band their magnitudes range from M3.6 = -18 to -24. Their B-[3.6] colour and structural parameters indicate these are star-forming galaxies. A good reflection of the old stellar population, the near-infrared band photometry also provide a robust estimate of the stellar mass, which for the VGS galaxies we confirm to be smaller than 3 x 1010 M. In terms of the structural parameters and morphology, our findings align with other studies in that our VGS galaxy sample consists mostly of small late-type galaxies. Most of them are similar to Sd-Sm galaxies, although a few are irregularly shaped galaxies. The sample even includes two early-type galaxies, one of which is an AGN. Their Sersic indices are nearly all smaller than n = 2 in both bands and they also have small half-light radii. In all, we conclude that the principal impact of the void environment on the galaxies populating them mostly concerns their low stellar mass and small size.

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

Journal keyword(s): galaxies: formation - galaxies: photometry - galaxies: structure - cosmology: observations - large-scale structure of Universe - large-scale structure of Universe

VizieR on-line data: <Available at CDS (J/MNRAS/464/666): table1.dat>

Simbad objects: 75

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2019.12.14-22:17:56

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