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Title: ULTRALUMINOUS INFRARED GALAXIES IN THE WISE AND SDSS SURVEYS

In this paper, we present a large catalog of 419 Ultraluminous infrared galaxies (ULIRGs), carefully selected from the Wide-field Infrared Survey Explorer mid-infrared data and the Sloan Digital Sky Survey eighth data release, and classify them into three subsamples, based on their emission line properties: H II-like ULIRGs, Seyfert 2 ULIRGs, and composite ULIRGs. We apply our new efficient spectral synthesis technique, which is based on mean field approach to Bayesian independent component analysis (MF-ICA) method, to the galaxy integrated spectra. We also analyze the stellar population properties, including percentage contribution, stellar age, and stellar mass, for these three types of ULIRGs, and explore the evolution among them. We find no significant difference between the properties of stellar populations in ULIRGs with or without active galactic nucleus components. Our results suggest that there is no evolutionary link among these three type ULIRGs.
Authors:
; ;  [1] ;  [2]
  1. Center for Astrophysics, University of Science and Technology of China, Hefei 230026 (China)
  2. Institute for Astronomy and History of Science and Technology, Dali University, Yunnan 671003 (China)
Publication Date:
OSTI Identifier:
22270529
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 778; 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; ASTRONOMY; ASTROPHYSICS; CATALOGS; EMISSION SPECTRA; GALACTIC EVOLUTION; GALAXY NUCLEI; INFRARED SURVEYS; INTERMEDIATE INFRARED RADIATION; MASS; MEAN-FIELD THEORY; SEYFERT GALAXIES