The Subaru-XMM-Newton Deep Survey (SXDS). VIII. Multi-wavelength identification, optical/NIR spectroscopic properties, and photometric redshifts of X-ray sources

Akiyama, Masayuki, Ueda, Yoshihiro, Watson, Mike G., Furusawa, Hisanori, Takata, Tadafumi, Simpson, Chris, Morokuma, Tomoki, Yamada, Toru, Ohta, Kouji, Iwamuro, Fumihide, Yabe, Kiyoto, Tamura, Naoyuki, Moritani, Yuuki, Takato, Naruhisa, Kimura, Masahiko, Maihara, Toshinori, Dalton, Gavin, Lewis, Ian, Lee, Hanshin, Curtis-Lake, Emma, Macaulay, Edward, Clarke, Frazer, Silverman, John D., Croom, Scott, Ouchi, Masami, Hanami, Hitoshi, Diaz Tello, Jorge, Yoshikawa, Tomohiro, Fujishiro, Naofumi and Sekiguchi, Kazuhiro (2015) The Subaru-XMM-Newton Deep Survey (SXDS). VIII. Multi-wavelength identification, optical/NIR spectroscopic properties, and photometric redshifts of X-ray sources. Publications of the Astronomical Society of Japan, 67 5: 1-42. doi:10.1093/pasj/psv050

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Author Akiyama, Masayuki
Ueda, Yoshihiro
Watson, Mike G.
Furusawa, Hisanori
Takata, Tadafumi
Simpson, Chris
Morokuma, Tomoki
Yamada, Toru
Ohta, Kouji
Iwamuro, Fumihide
Yabe, Kiyoto
Tamura, Naoyuki
Moritani, Yuuki
Takato, Naruhisa
Kimura, Masahiko
Maihara, Toshinori
Dalton, Gavin
Lewis, Ian
Lee, Hanshin
Curtis-Lake, Emma
Macaulay, Edward
Clarke, Frazer
Silverman, John D.
Croom, Scott
Ouchi, Masami
Hanami, Hitoshi
Diaz Tello, Jorge
Yoshikawa, Tomohiro
Fujishiro, Naofumi
Sekiguchi, Kazuhiro
Title The Subaru-XMM-Newton Deep Survey (SXDS). VIII. Multi-wavelength identification, optical/NIR spectroscopic properties, and photometric redshifts of X-ray sources
Journal name Publications of the Astronomical Society of Japan   Check publisher's open access policy
ISSN 2053-051X
0004-6264
Publication date 2015-06-30
Sub-type Article (original research)
DOI 10.1093/pasj/psv050
Open Access Status Not Open Access
Volume 67
Issue 5
Start page 1
End page 42
Total pages 42
Place of publication Mitaka, Tokyo, Japan
Publisher Nihon Tenmon Gakkai / Astronomical Society of Japan
Collection year 2016
Language eng
Formatted abstract
We report on the multi-wavelength identification of the X-ray sources found in the Subaru–XMM-Newton Deep Survey (SXDS) using deep imaging data covering the wavelength range between the far-UV and mid-IR (MIR). We select a primary counterpart of each X-ray source by applying the likelihood ratio method to R-band, 3.6 μm, near-UV, and 24 μm source catalogs as well as matching catalogs of active galactic nucleus (AGN) candidates selected in 1.4 GHz radio and i′-band variability surveys. Once candidates for Galactic stars, ultra-luminous X-ray sources in a nearby galaxy, and clusters of galaxies are removed there are 896 AGN candidates in the sample. We conduct spectroscopic observations of the primary counterparts with multi-object spectrographs in the optical and NIR; 65% of the X-ray AGN candidates are spectroscopically identified. For the remaining X-ray AGN candidates, we evaluate their photometric redshift with photometric data in 15 bands. Utilizing the multi-wavelength photometric data of the large sample of X-ray-selected AGNs, we evaluate the stellar masses, M*, of the host galaxies of the narrow-line AGNs. The distribution of the stellar mass is remarkably constant from z = 0.1 to 4.0. The relation between M* and 2–10 keV luminosity can be explained with strong cosmological evolution of the relationship between the black hole mass and M*. We also evaluate the scatter of the UV–MIR spectral energy distribution (SED) of the X-ray AGNs as a function of X-ray luminosity and absorption by the nucleus. The scatter is compared with galaxies which have redshift and stellar mass distribution matched with the X-ray AGN. The UV–NIR (near-IR) SEDs of obscured X-ray AGNs are similar to those of the galaxies in the matched sample. In the NIR–MIR range, the median SEDs of X-ray AGNs are redder, but the scatter of the SEDs of the X-ray AGN broadly overlaps that of the galaxies in the matched sample.
Keyword Catalogs
Galaxies: active
Quasars: general
Surveys
X-rays: galaxies
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2016 Collection
 
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