The void galaxy survey: photometry, structure and identity of void galaxies

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dc.contributor.authorBeygu, B
dc.contributor.authorPeletier, R F
dc.contributor.authorHulst, J M van der
dc.contributor.authorJarrett, T H
dc.contributor.authorKreckel, K
dc.contributor.authorWeygaert, R van de
dc.contributor.authorvan Gorkom, J H
dc.contributor.authorAragon-Calvo, M A
dc.date.accessioned2021-10-08T07:08:26Z
dc.date.available2021-10-08T07:08:26Z
dc.date.issued2017
dc.description.abstractWe 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 × 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 Sérsic 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.
dc.identifier.apacitationBeygu, B., Peletier, R. F., Hulst, J. M. v. d., Jarrett, T. H., Kreckel, K., Weygaert, R. v. d., ... Aragon-Calvo, M. A. (2017). The void galaxy survey: photometry, structure and identity of void galaxies. <i>Monthly Notices of the Royal Astronomical Society</i>, 464(1), 666 - 679. http://hdl.handle.net/11427/34579en_ZA
dc.identifier.chicagocitationBeygu, B, R F Peletier, J M van der Hulst, T H Jarrett, K Kreckel, R van de Weygaert, J H van Gorkom, and M A Aragon-Calvo "The void galaxy survey: photometry, structure and identity of void galaxies." <i>Monthly Notices of the Royal Astronomical Society</i> 464, 1. (2017): 666 - 679. http://hdl.handle.net/11427/34579en_ZA
dc.identifier.citationBeygu, B., Peletier, R.F., Hulst, J.M.v.d., Jarrett, T.H., Kreckel, K., Weygaert, R.v.d., van Gorkom, J.H. & Aragon-Calvo, M.A. et al. 2017. The void galaxy survey: photometry, structure and identity of void galaxies. <i>Monthly Notices of the Royal Astronomical Society.</i> 464(1):666 - 679. http://hdl.handle.net/11427/34579en_ZA
dc.identifier.issn0035-8711
dc.identifier.issn1365-2966
dc.identifier.ris TY - Journal Article AU - Beygu, B AU - Peletier, R F AU - Hulst, J M van der AU - Jarrett, T H AU - Kreckel, K AU - Weygaert, R van de AU - van Gorkom, J H AU - Aragon-Calvo, M A AB - 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 × 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 Sérsic 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. DA - 2017 DB - OpenUCT DP - University of Cape Town IS - 1 J1 - Monthly Notices of the Royal Astronomical Society LK - https://open.uct.ac.za PY - 2017 SM - 0035-8711 SM - 1365-2966 T1 - The void galaxy survey: photometry, structure and identity of void galaxies TI - The void galaxy survey: photometry, structure and identity of void galaxies UR - http://hdl.handle.net/11427/34579 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/34579
dc.identifier.vancouvercitationBeygu B, Peletier RF, Hulst JMvd, Jarrett TH, Kreckel K, Weygaert Rvd, et al. The void galaxy survey: photometry, structure and identity of void galaxies. Monthly Notices of the Royal Astronomical Society. 2017;464(1):666 - 679. http://hdl.handle.net/11427/34579.en_ZA
dc.publisher.departmentDepartment of Astronomy
dc.publisher.facultyFaculty of Science
dc.sourceMonthly Notices of the Royal Astronomical Society
dc.source.journalissue1
dc.source.journalvolume464
dc.source.pagination666 - 679
dc.source.urihttps://dx.doi.org/10.1093/mnras/stw2362
dc.subject.otherGalaxies
dc.subject.otherPhotometry
dc.subject.otherprospection
dc.subject.othersurvey
dc.subject.othermesse
dc.subject.otherMass
dc.subject.otherStructure
dc.subject.otherIdentity (Philosophical concept)
dc.subject.otheridentité
dc.subject.otherprocédure
dc.subject.otherSky
dc.subject.otherabsolu
dc.subject.othercolour
dc.subject.othercouleur
dc.subject.otherColor
dc.subject.otherbien
dc.subject.otherreflection
dc.subject.otherréflexion
dc.subject.otherpopulation
dc.subject.otherPopulation
dc.subject.otherMorphology
dc.subject.othermorphology
dc.subject.othermorphologie (langue)
dc.subject.otherIndexes
dc.subject.otherBands
dc.subject.otherImpact
dc.subject.otherEcology
dc.subject.otherenvironnement
dc.subject.otherAdaptation (Biology)
dc.subject.otherenvironment
dc.subject.otherEuthenics
dc.subject.otherNature and nurture
dc.subject.otherpeuplement
dc.subject.otherSize
dc.subject.othergalaxies: formation
dc.subject.othergalaxies: photometry
dc.subject.othergalaxies: structure
dc.subject.othercosmology: observations
dc.subject.otherlarge-scale structure of Universe
dc.subject.otherSPECTROSCOPIC SURVEY
dc.subject.otherC
dc.titleThe void galaxy survey: photometry, structure and identity of void galaxies
dc.typeJournal Article
uct.type.publicationResearch
uct.type.resourceJournal Article
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