Studying large- and small-scale environments of ultraviolet luminous galaxies

Antara R. Basu-Zych, David Schiminovich, Sebastien Heinis, Roderik Overzier, Tim Heckman, Michel Zamojski, Olivier Ilbert, Anton M. Koekemoer, Tom A. Barlow, Luciana Bianchi, Tim Conrow, Jose Donas, Karl G. Forster, Peter G. Friedman, Young Wook Lee, Barry F. Madore, D. Christopher Martin, Bruno Milliard, Patrick Morrissey, Susan G. NeffR. Michael Rich, Samir Salim, Mark Seibert, Todd A. Small, Alex S. Szalay, Ted K. Wyder, Sukyoung Yi

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7 Citations (Scopus)

Abstract

Studying the environments of 0.4 < z < 1.2 ultraviolet (UV)-selected galaxies, as examples of extreme star-forming galaxies (with star formation rates (SFRs) in the range of 3-30 M 1 yr-1), we explore the relationship between high rates of star formation, host halo mass, and pair fractions. We study the large- and small-scale environments of local ultraviolet luminous galaxies (UVLGs) by measuring angular correlation functions. We cross-correlate these systems with other galaxy samples: a volume-limited sample (ALL), a blue luminous galaxy sample, and a luminous red galaxy (LRG) sample. We determine the UVLG comoving correlation length to be r 0 = 4.8+11.6 -2.4 h -1 Mpc at 〈z〉 = 1.0, which is unable to constrain the halo mass for this sample. However, we find that UVLGs form close (separation <30 kpc) pairs with the ALL sample, but do not frequently form pairs with LRGs. A rare subset of UVLGs, those with the highest FUV surface brightnesses, are believed to be local analogs of high-redshift Lyman break galaxies (LBGs) and are called Lyman break analogs (LBAs). LBGs and LBAs share similar characteristics (i.e., color, size, surface brightness, specific SFRs, metallicities, and dust content). Recent Hubble Space Telescope images of z 0.2 LBAs show disturbed morphologies, signs of mergers and interactions. UVLGs may be influenced by interactions with other galaxies and we discuss this result in terms of other high star-forming, merging systems.

Original languageEnglish
Pages (from-to)1307-1320
Number of pages14
JournalAstrophysical Journal
Volume699
Issue number2
DOIs
Publication statusPublished - 2009

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Basu-Zych, A. R., Schiminovich, D., Heinis, S., Overzier, R., Heckman, T., Zamojski, M., Ilbert, O., Koekemoer, A. M., Barlow, T. A., Bianchi, L., Conrow, T., Donas, J., Forster, K. G., Friedman, P. G., Lee, Y. W., Madore, B. F., Martin, D. C., Milliard, B., Morrissey, P., ... Yi, S. (2009). Studying large- and small-scale environments of ultraviolet luminous galaxies. Astrophysical Journal, 699(2), 1307-1320. https://doi.org/10.1088/0004-637X/699/2/1307