Properties of the KISS Green Pea Galaxies
Abstract
Green peas (GPs) are a class of extreme star-forming galaxies (SFGs) at intermediate redshifts, originally discovered via color selection using multifilter, wide-field survey imaging data. They are commonly thought of as being analogs of high-redshift Lyα-emitting galaxies. The defining characteristic of GP galaxies is a high-excitation nebular spectrum with very large equivalent width lines, leading to the recognition that GP-like galaxies can also be identified in samples of emission-line galaxies. Here we compare the properties a sample of [O iii]-selected SFGs (z = 0.29–0.41) from the KPNO International Spectroscopic Survey (KISS) with the color-selected GPs. We find that the KISS [O iii]-selected galaxies overlap with the parameter space defined by the color-selected GPs; the two samples appear to be drawn from the same population of objects. We compare the KISS GPs with the full Hα-selected KISS SFG sample (z < 0.1) and find that they are extreme systems. Many appear to be young systems at their observed look-back times (3–4 Gyr), with more than 90% of their rest-frame B-band luminosity coming from the starburst population. We compute the volume density of the KISS red (KISSR) GPs at z = 0.29–0.41 and find that they are extremely rare objects. We do not see galaxies as extreme as the KISSR GPs in the local universe, although we recognize several lower-luminosity systems at z < 0.1.
Additional Information
© 2020 The American Astronomical Society. Received 2020 June 8; accepted 2020 June 18; published 2020 July 24. We acknowledge financial support from the National Science Foundation for the KISS project, as well as for the subsequent follow-up spectroscopy campaign (NSF-AST-9553020, NSF-AST-0071114, and NSF-AST-0307766). We are grateful to the Indiana University College of Arts and Sciences for their continued support of the WIYN Observatory. We thank the staff of the WIYN Observatory for their excellent support during both our WHIRC NIR imaging observations and our Hydra spectroscopic runs. This work is based in part on observations made with the Spitzer Space Telescope, which was operated by the Jet Propulsion Laboratory, California Institute of Technology, under a contract with NASA. This publication makes use of data products from the Wide-field Infrared Survey Explorer (WISE), which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration. Funding for the SDSS has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the U.S. Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England. The SDSS website is http://www.sdss.org/. The SDSS is managed by the Astrophysical Research Consortium for the Participating Institutions. The Participating Institutions are the American Museum of Natural History, the Astrophysical Institute Potsdam, the University of Basel, the University of Cambridge, Case Western Reserve University, the University of Chicago, Drexel University, Fermilab, the Institute for Advanced Study, the Japan Participation Group, Johns Hopkins University, the Joint Institute for Nuclear Astrophysics, the Kavli Institute for Particle Astrophysics and Cosmology, the Korean Scientist Group, the Chinese Academy of Sciences (LAMOST), Los Alamos National Laboratory, the Max Planck Institute for Astronomy (MPIA), the Max Planck Institute for Astrophysics (MPA), New Mexico State University, Ohio State University, the University of Pittsburgh, the University of Portsmouth, Princeton University, the United States Naval Observatory, and the University of Washington. Facilities: WIYN (Hydra and WHIRC) - , Spitzer - , WISE. -Attached Files
Published - Brunker_2020_ApJ_898_68.pdf
Accepted Version - 2006.14663.pdf
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Additional details
- Eprint ID
- 104570
- Resolver ID
- CaltechAUTHORS:20200724-123517794
- AST-9553020
- NSF
- AST-0071114
- NSF
- AST-0307766
- NSF
- NASA/JPL/Caltech
- Alfred P. Sloan Foundation
- Participating Institutions
- Department of Energy (DOE)
- Monbukagakusho
- Max Planck Society
- Higher Education Funding Council for England
- Created
-
2020-07-24Created from EPrint's datestamp field
- Updated
-
2021-11-16Created from EPrint's last_modified field
- Caltech groups
- Infrared Processing and Analysis Center (IPAC)