skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: CLASH: EXTREME EMISSION-LINE GALAXIES AND THEIR IMPLICATION ON SELECTION OF HIGH-REDSHIFT GALAXIES

Abstract

We utilize the Cluster Lensing And Supernova survey with Hubble observations of 25 clusters to search for extreme emission-line galaxies (EELGs). The selections are carried out in two central bands: F105W (Y {sub 105}) and F125W (J {sub 125}), as the flux of the central bands could be enhanced by the presence of [O III] λλ4959, 5007 at redshifts of ∼0.93-1.14 and 1.57-1.79, respectively. The multiband observations help to constrain the equivalent widths (EWs) of emission lines. Thanks to cluster lensing, we are able to identify 52 candidates down to an intrinsic limiting magnitude of 28.5 and to a rest-frame [O III] λλ4959, 5007 EW of ≅ 3700 Å. Our samples include a number of EELGs at lower luminosities that are missed in other surveys, and the extremely high EW can only be found in such faint galaxies. These EELGs can mimic a dropout feature similar to that of high-redshift galaxies and contaminate the color-color selection of high-redshift galaxies when the signal-to-noise ratio is limited or the band coverage is incomplete.

Authors:
; ;  [1]; ; ;  [2];  [3];  [4];  [5];  [6]; ; ;  [7];  [8];  [9];  [10];  [11];  [12];
  1. CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei, Anhui 230026 (China)
  2. Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218 (United States)
  3. Department of Physics and Astronomy, Siena College, 515 Loudon Road, Loudonville, NY 12211 (United States)
  4. Max-Planck Institute for Astronomy, Königstuhl 17, D-69117, Heidelberg (Germany)
  5. Cahill Center for Astronomy and Astrophysics, California Institute of Technology, MS 249-17, Pasadena, CA 91125 (United States)
  6. Steward Observatory/Department of Astronomy, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721-0065 (United States)
  7. Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21208 (United States)
  8. Leiden Observatory, Leiden University, P. O. Box 9513, 2300 RA Leiden (Netherlands)
  9. Instituto de Astrofísica de Andalucía (CSIC), C/Camino Bajo de Huétor 24, Granada E-18008 (Spain)
  10. Department of Theoretical Physics, University of Basque Country UPV/EHU E-Bilbao (Spain)
  11. Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824 (United States)
  12. Departamento de Astronoía y Astrofísica, Pontificia Universidad Católica de Chile, V. Mackenna 4860 Santiago 22 (Chile)
Publication Date:
OSTI Identifier:
22522043
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 801; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COLOR; EMISSION SPECTRA; GALAXIES; LUMINOSITY; OXYGEN IONS; PHOTOMETRY; RED SHIFT; SIGNAL-TO-NOISE RATIO

Citation Formats

Huang, Xingxing, Wang, Junxian, Shu, Xinwen, Zheng, Wei, Ford, Holland, Lemze, Doron, Moustakas, John, Van der Wel, Arjen, Zitrin, Adi, Frye, Brenda L., Postman, Marc, Bradley, Larry, Coe, Dan, Bartelmann, Matthias, Benítez, Narciso, Broadhurst, Tom, Donahue, Megan, Infante, Leopoldo, E-mail: hxx@mail.ustc.edu.cn, and and others. CLASH: EXTREME EMISSION-LINE GALAXIES AND THEIR IMPLICATION ON SELECTION OF HIGH-REDSHIFT GALAXIES. United States: N. p., 2015. Web. doi:10.1088/0004-637X/801/1/12.
Huang, Xingxing, Wang, Junxian, Shu, Xinwen, Zheng, Wei, Ford, Holland, Lemze, Doron, Moustakas, John, Van der Wel, Arjen, Zitrin, Adi, Frye, Brenda L., Postman, Marc, Bradley, Larry, Coe, Dan, Bartelmann, Matthias, Benítez, Narciso, Broadhurst, Tom, Donahue, Megan, Infante, Leopoldo, E-mail: hxx@mail.ustc.edu.cn, & and others. CLASH: EXTREME EMISSION-LINE GALAXIES AND THEIR IMPLICATION ON SELECTION OF HIGH-REDSHIFT GALAXIES. United States. doi:10.1088/0004-637X/801/1/12.
Huang, Xingxing, Wang, Junxian, Shu, Xinwen, Zheng, Wei, Ford, Holland, Lemze, Doron, Moustakas, John, Van der Wel, Arjen, Zitrin, Adi, Frye, Brenda L., Postman, Marc, Bradley, Larry, Coe, Dan, Bartelmann, Matthias, Benítez, Narciso, Broadhurst, Tom, Donahue, Megan, Infante, Leopoldo, E-mail: hxx@mail.ustc.edu.cn, and and others. Sun . "CLASH: EXTREME EMISSION-LINE GALAXIES AND THEIR IMPLICATION ON SELECTION OF HIGH-REDSHIFT GALAXIES". United States. doi:10.1088/0004-637X/801/1/12.
@article{osti_22522043,
title = {CLASH: EXTREME EMISSION-LINE GALAXIES AND THEIR IMPLICATION ON SELECTION OF HIGH-REDSHIFT GALAXIES},
author = {Huang, Xingxing and Wang, Junxian and Shu, Xinwen and Zheng, Wei and Ford, Holland and Lemze, Doron and Moustakas, John and Van der Wel, Arjen and Zitrin, Adi and Frye, Brenda L. and Postman, Marc and Bradley, Larry and Coe, Dan and Bartelmann, Matthias and Benítez, Narciso and Broadhurst, Tom and Donahue, Megan and Infante, Leopoldo, E-mail: hxx@mail.ustc.edu.cn and and others},
abstractNote = {We utilize the Cluster Lensing And Supernova survey with Hubble observations of 25 clusters to search for extreme emission-line galaxies (EELGs). The selections are carried out in two central bands: F105W (Y {sub 105}) and F125W (J {sub 125}), as the flux of the central bands could be enhanced by the presence of [O III] λλ4959, 5007 at redshifts of ∼0.93-1.14 and 1.57-1.79, respectively. The multiband observations help to constrain the equivalent widths (EWs) of emission lines. Thanks to cluster lensing, we are able to identify 52 candidates down to an intrinsic limiting magnitude of 28.5 and to a rest-frame [O III] λλ4959, 5007 EW of ≅ 3700 Å. Our samples include a number of EELGs at lower luminosities that are missed in other surveys, and the extremely high EW can only be found in such faint galaxies. These EELGs can mimic a dropout feature similar to that of high-redshift galaxies and contaminate the color-color selection of high-redshift galaxies when the signal-to-noise ratio is limited or the band coverage is incomplete.},
doi = {10.1088/0004-637X/801/1/12},
journal = {Astrophysical Journal},
number = 1,
volume = 801,
place = {United States},
year = {Sun Mar 01 00:00:00 EST 2015},
month = {Sun Mar 01 00:00:00 EST 2015}
}