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Title: HECTOSPEC AND HYDRA SPECTRA OF INFRARED LUMINOUS SOURCES IN THE AKARI NORTH ECLIPTIC POLE SURVEY FIELD

Abstract

We present spectra of 1796 sources selected in the AKARI North Ecliptic Pole Wide Survey field, obtained with MMT/Hectospec and WIYN/Hydra, for which we measure 1645 redshifts. We complemented the generic flux-limited spectroscopic surveys at 11 {mu}m and 15 {mu}m, with additional sources selected based on the MIR and optical colors. In MMT/Hectospec observations, the redshift identification rates are {approx}80% for objects with R < 21.5 mag. On the other hand, in WIYN/Hydra observations, the redshift identification rates are {approx}80% at R magnitudes brighter than 19 mag. The observed spectra were classified through the visual inspection or from the line diagnostics. We identified 1128 star-forming or absorption-line-dominated galaxies, 198 Type-1 active galactic nuclei (AGNs), 8 Type-2 AGNs, 121 Galactic stars, and 190 spectra in unknown category due to low signal-to-noise ratio. The spectra were flux-calibrated but to an accuracy of 0.1-0.18 dex for most of the targets and worse for the remainder. We derive star formation rates (SFRs) from the mid-infrared fluxes or from the optical emission lines, showing that our sample spans an SFR range of 0.1 to a few hundred M{sub Sun} yr{sup -1}. We find that the extinction inferred from the difference between the IR and opticalmore » SFR increases as the IR luminosity increases but with a large scatter.« less

Authors:
 [1]; ; ; ;  [2];  [3];  [4];  [5];
  1. Department of Earth Science Education, Kyungpook National University, Daegu 702-701 (Korea, Republic of)
  2. Department of Physics and Astronomy, FPRD, Seoul National University, Seoul 151-742 (Korea, Republic of)
  3. Korea Astronomy and Space Science Institute (KASI), Daejeon 305-348 (Korea, Republic of)
  4. Center for the Exploration of the Origin of the Universe (CEOU), Seoul National University, Seoul 151-742 (Korea, Republic of)
  5. George P. and Cynthia W. Mitchell Institute for Fundamental Physics and Astronomy, Department of Physics, Texas A and M University, College Station, TX 77843 (United States)
Publication Date:
OSTI Identifier:
22136582
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal, Supplement Series
Additional Journal Information:
Journal Volume: 207; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0067-0049
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ABSORPTION; ACCURACY; COLOR; EMISSION; GALAXIES; GALAXY NUCLEI; INFRARED RADIATION; INSPECTION; LUMINOSITY; RED SHIFT; SIGNAL-TO-NOISE RATIO; SPECTRA

Citation Formats

Shim, Hyunjin, Im, Myungshin, Jeon, Yiseul, Kim, Seong Jin, Lee, Hyung Mok, Ko, Jongwan, Karouzos, Marios, Papovich, Casey, Willmer, Christopher, and Weiner, Benjamin J., E-mail: hjshim@knu.ac.kr. HECTOSPEC AND HYDRA SPECTRA OF INFRARED LUMINOUS SOURCES IN THE AKARI NORTH ECLIPTIC POLE SURVEY FIELD. United States: N. p., 2013. Web. doi:10.1088/0067-0049/207/2/37.
Shim, Hyunjin, Im, Myungshin, Jeon, Yiseul, Kim, Seong Jin, Lee, Hyung Mok, Ko, Jongwan, Karouzos, Marios, Papovich, Casey, Willmer, Christopher, & Weiner, Benjamin J., E-mail: hjshim@knu.ac.kr. HECTOSPEC AND HYDRA SPECTRA OF INFRARED LUMINOUS SOURCES IN THE AKARI NORTH ECLIPTIC POLE SURVEY FIELD. United States. https://doi.org/10.1088/0067-0049/207/2/37
Shim, Hyunjin, Im, Myungshin, Jeon, Yiseul, Kim, Seong Jin, Lee, Hyung Mok, Ko, Jongwan, Karouzos, Marios, Papovich, Casey, Willmer, Christopher, and Weiner, Benjamin J., E-mail: hjshim@knu.ac.kr. 2013. "HECTOSPEC AND HYDRA SPECTRA OF INFRARED LUMINOUS SOURCES IN THE AKARI NORTH ECLIPTIC POLE SURVEY FIELD". United States. https://doi.org/10.1088/0067-0049/207/2/37.
@article{osti_22136582,
title = {HECTOSPEC AND HYDRA SPECTRA OF INFRARED LUMINOUS SOURCES IN THE AKARI NORTH ECLIPTIC POLE SURVEY FIELD},
author = {Shim, Hyunjin and Im, Myungshin and Jeon, Yiseul and Kim, Seong Jin and Lee, Hyung Mok and Ko, Jongwan and Karouzos, Marios and Papovich, Casey and Willmer, Christopher and Weiner, Benjamin J., E-mail: hjshim@knu.ac.kr},
abstractNote = {We present spectra of 1796 sources selected in the AKARI North Ecliptic Pole Wide Survey field, obtained with MMT/Hectospec and WIYN/Hydra, for which we measure 1645 redshifts. We complemented the generic flux-limited spectroscopic surveys at 11 {mu}m and 15 {mu}m, with additional sources selected based on the MIR and optical colors. In MMT/Hectospec observations, the redshift identification rates are {approx}80% for objects with R < 21.5 mag. On the other hand, in WIYN/Hydra observations, the redshift identification rates are {approx}80% at R magnitudes brighter than 19 mag. The observed spectra were classified through the visual inspection or from the line diagnostics. We identified 1128 star-forming or absorption-line-dominated galaxies, 198 Type-1 active galactic nuclei (AGNs), 8 Type-2 AGNs, 121 Galactic stars, and 190 spectra in unknown category due to low signal-to-noise ratio. The spectra were flux-calibrated but to an accuracy of 0.1-0.18 dex for most of the targets and worse for the remainder. We derive star formation rates (SFRs) from the mid-infrared fluxes or from the optical emission lines, showing that our sample spans an SFR range of 0.1 to a few hundred M{sub Sun} yr{sup -1}. We find that the extinction inferred from the difference between the IR and optical SFR increases as the IR luminosity increases but with a large scatter.},
doi = {10.1088/0067-0049/207/2/37},
url = {https://www.osti.gov/biblio/22136582}, journal = {Astrophysical Journal, Supplement Series},
issn = {0067-0049},
number = 2,
volume = 207,
place = {United States},
year = {Thu Aug 15 00:00:00 EDT 2013},
month = {Thu Aug 15 00:00:00 EDT 2013}
}