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Measuring star formation in high-z massive galaxies: a mid-infrared to submillimetre study of the GOODS NICMOS Survey sample

Viero, M. P. and Moncelsi, L. and Mentuch, E. and Buitrago, F. and Bauer, A. E. and Chapin, E. L. and Conselice, C. J. and Devlin, M. J. and Halpern, M. and Marsden, G. and Netterfield, C. B. and Pascale, E. and Peréz-González, P. G. and Rex, M. and Scott, D. and Smith, M. W. L. and Truch, M. D. P. and Trujillo, I. and Wiebe, D. V. (2012) Measuring star formation in high-z massive galaxies: a mid-infrared to submillimetre study of the GOODS NICMOS Survey sample. Monthly Notices of the Royal Astronomical Society, 421 (3). pp. 2161-2169. ISSN 0035-8711. https://resolver.caltech.edu/CaltechAUTHORS:20120515-154651417

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Abstract

We present measurements of the mean mid-infrared to submillimetre flux densities of massive (M_* ≳ 10^(11) M_⊙) galaxies at redshifts 1.7 < z < 2.9, obtained by stacking positions of known objects taken from the GOODS NICMOS Survey (GNS) catalogue on maps at 24 inline imagem (Spitzer/MIPS); 70, 100 and 160 inline imagem (Herschel/PACS); 250, 350 and 500 inline imagem (BLAST); and 870 inline imagem (LABOCA). A modified blackbody spectrum fit to the stacked flux densities indicates a median [interquartile] star formation rate (SFR) of SFR = 63[48, 81] M_⊙ yr^(−1). We note that not properly accounting for correlations between bands when fitting stacked data can significantly bias the result. The galaxies are divided into two groups, disc-like and spheroid-like, according to their Sérsic indices, n. We find evidence that most of the star formation is occurring in n≤ 2 (disc-like) galaxies, with median [interquartile] SFR = 122[100, 150] M_⊙ yr^(−1), while there are indications that the n > 2 (spheroid-like) population may be forming stars at a median [interquartile] SFR = 14[9, 20] M_⊙ yr^(−1), if at all. Finally, we show that star formation is a plausible mechanism for size evolution in this population as a whole, but find only marginal evidence that it is what drives the expansion of the spheroid-like galaxies.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1111/j.1365-2966.2012.20456.x DOIArticle
ORCID:
AuthorORCID
Moncelsi, L.0000-0002-4242-3015
Conselice, C. J.0000-0003-1949-7638
Halpern, M.0000-0002-1760-0868
Pascale, E.0000-0002-3242-8154
Scott, D.0000-0002-6878-9840
Smith, M. W. L.0000-0002-3532-6970
Additional Information:© 2012 The Authors. Monthly Notices of the Royal Astronomical Society © 2012 RAS. Accepted 2011 December 25. Received 2011 December 25; in original form 2011 July 23. Article first published online: 10 Feb 2012. The authors would like to extend a big thanks to the LESS team for providing the 870-μm map, and to David Frayer for the Spitzer 70-μm map used in the first version of this paper. We would also like to thank Ian Smail, Kimberly Scott and Ivana Damjanov for constructive comments. Finally, we would like to thank Hervé Aussel for his helpful advice. We acknowledge the support of NASA through grant numbers NAG5-12785, NAG5-13301 and NNGO-6GI11G, the NSF Office of Polar Programmes, the Canadian Space Agency, the Natural Sciences and Engineering Research Council (NSERC) of Canada, and the UK Science and Technology Facilities Council (STFC). This publication is based on data acquired with the Atacama Pathfinder Experiment (APEX) under programme numbers 078.F-9028(A), 079.F-9500(A), 080.A-3023(A) and 081.F- 9500(A). APEX is a collaboration between the Max-Planck-Institut fur Radioastronomie, the European Southern Observatory and the Onsala Space Observatory.
Funders:
Funding AgencyGrant Number
NASANAG5-12785
NASANAG5-13301
NASANNGO-6GI11G
NSF Office of Polar ProgrammesUNSPECIFIED
Canadian Space Agency (CSA)UNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Science and Technology Facilities Council (STFC)UNSPECIFIED
Atacama Pathfinder Experiments (APEX)078.F-9028(A)
Atacama Pathfinder Experiments (APEX)079.F-9500(A)
Atacama Pathfinder Experiments (APEX)080.A-3023(A)
Atacama Pathfinder Experiments (APEX)081.F-9500(A)
Subject Keywords: galaxies: evolution; galaxies: high-redshift; infrared: galaxies
Issue or Number:3
Record Number:CaltechAUTHORS:20120515-154651417
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20120515-154651417
Official Citation:Viero, M. P., Moncelsi, L., Mentuch, E., Buitrago, F., Bauer, A. E., Chapin, E. L., Conselice, C. J., Devlin, M. J., Halpern, M., Marsden, G., Netterfield, C. B., Pascale, E., Pérez-González, P. G., Rex, M., Scott, D., Smith, M. W. L., Truch, M. D. P., Trujillo, I. and Wiebe, D. V. (2012), Measuring star formation in high-z massive galaxies: a mid-infrared to submillimetre study of the GOODS NICMOS Survey sample. Monthly Notices of the Royal Astronomical Society, 421: 2161–2169. doi: 10.1111/j.1365-2966.2012.20456.x
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:31491
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:16 May 2012 15:00
Last Modified:09 Mar 2020 13:19

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