A large, uniform sample of X-ray-emitting active galactic nuclei from the ROSAT all sky and Sloan digital sky surveys: The data release 5 sample

Scott F. Anderson, Bruce Margon, Wolfgang Voges, Richard M. Plotkin, David Syphers, Daryl Haggard, Matthew J. Collinge, Jillian Meyer, Michael A. Strauss, Marcel A. Agüeros, Patrick B. Hall, L. Homer, Željko Ivezić, Gordon T. Richards, Michael W. Richmond, Donald P. Schneider, Gregory Stinson, Daniel E. Vanden Berk, Donald G. York

Research output: Contribution to journalReview article

55 Citations (Scopus)

Abstract

We describe further results of a program aimed at yielding ∼10 4 fully characterized optical identifications of ROSAT X-ray sources. Our program employs X-ray data from the ROSAT All Sky Survey (RASS) and both optical imaging and spectroscopic data from the Sloan Digital Sky Survey (SDSS). RASS/SDSS data from 5740 deg2 of sky spectroscopically covered in SDSS Data Release 5 provide an expanded catalog of 7000 confirmed quasars and other active galactic nuclei (AGNs) that are probable RASS identifications. Again, in our expanded catalog the identifications as X-ray sources are statistically secure, with only a few percent of the SDSS AGNs likely to be randomly superposed on unrelated RASS X-ray sources. Most identifications continue to be quasars and Seyfert 1 galaxies with 15 < m < 21 and 0.01 < z < 4, but the total sample size has grown to include very substantial numbers of even quite rare AGNs, e.g., it now includes several hundreds of candidate X-ray-emitting BL Lac objects and narrow-line Seyfert 1 galaxies. In addition to exploring rare subpopulations, such a large total sample may be useful when considering correlations between the X-ray and the optical and may also serve as a resource list from which to select the "best" object (e.g., X-ray-brightest AGN of a certain subclass at a preferred redshift or luminosity) for follow-up X-ray spectral or alternate detailed studies.

Original languageEnglish (US)
Pages (from-to)313-329
Number of pages17
JournalAstronomical Journal
Volume133
Issue number1
DOIs
StatePublished - Jan 1 2007

Fingerprint

active galactic nuclei
sky
x rays
quasars
catalogs
galaxies
subpopulation
lists
resources
luminosity
resource

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Anderson, Scott F. ; Margon, Bruce ; Voges, Wolfgang ; Plotkin, Richard M. ; Syphers, David ; Haggard, Daryl ; Collinge, Matthew J. ; Meyer, Jillian ; Strauss, Michael A. ; Agüeros, Marcel A. ; Hall, Patrick B. ; Homer, L. ; Ivezić, Željko ; Richards, Gordon T. ; Richmond, Michael W. ; Schneider, Donald P. ; Stinson, Gregory ; Vanden Berk, Daniel E. ; York, Donald G. / A large, uniform sample of X-ray-emitting active galactic nuclei from the ROSAT all sky and Sloan digital sky surveys : The data release 5 sample. In: Astronomical Journal. 2007 ; Vol. 133, No. 1. pp. 313-329.
@article{80ec61d8a06e484187c7d19a10c82261,
title = "A large, uniform sample of X-ray-emitting active galactic nuclei from the ROSAT all sky and Sloan digital sky surveys: The data release 5 sample",
abstract = "We describe further results of a program aimed at yielding ∼10 4 fully characterized optical identifications of ROSAT X-ray sources. Our program employs X-ray data from the ROSAT All Sky Survey (RASS) and both optical imaging and spectroscopic data from the Sloan Digital Sky Survey (SDSS). RASS/SDSS data from 5740 deg2 of sky spectroscopically covered in SDSS Data Release 5 provide an expanded catalog of 7000 confirmed quasars and other active galactic nuclei (AGNs) that are probable RASS identifications. Again, in our expanded catalog the identifications as X-ray sources are statistically secure, with only a few percent of the SDSS AGNs likely to be randomly superposed on unrelated RASS X-ray sources. Most identifications continue to be quasars and Seyfert 1 galaxies with 15 < m < 21 and 0.01 < z < 4, but the total sample size has grown to include very substantial numbers of even quite rare AGNs, e.g., it now includes several hundreds of candidate X-ray-emitting BL Lac objects and narrow-line Seyfert 1 galaxies. In addition to exploring rare subpopulations, such a large total sample may be useful when considering correlations between the X-ray and the optical and may also serve as a resource list from which to select the {"}best{"} object (e.g., X-ray-brightest AGN of a certain subclass at a preferred redshift or luminosity) for follow-up X-ray spectral or alternate detailed studies.",
author = "Anderson, {Scott F.} and Bruce Margon and Wolfgang Voges and Plotkin, {Richard M.} and David Syphers and Daryl Haggard and Collinge, {Matthew J.} and Jillian Meyer and Strauss, {Michael A.} and Ag{\"u}eros, {Marcel A.} and Hall, {Patrick B.} and L. Homer and Željko Ivezić and Richards, {Gordon T.} and Richmond, {Michael W.} and Schneider, {Donald P.} and Gregory Stinson and {Vanden Berk}, {Daniel E.} and York, {Donald G.}",
year = "2007",
month = "1",
day = "1",
doi = "10.1086/509765",
language = "English (US)",
volume = "133",
pages = "313--329",
journal = "Astronomical Journal",
issn = "0004-6256",
publisher = "IOP Publishing Ltd.",
number = "1",

}

Anderson, SF, Margon, B, Voges, W, Plotkin, RM, Syphers, D, Haggard, D, Collinge, MJ, Meyer, J, Strauss, MA, Agüeros, MA, Hall, PB, Homer, L, Ivezić, Ž, Richards, GT, Richmond, MW, Schneider, DP, Stinson, G, Vanden Berk, DE & York, DG 2007, 'A large, uniform sample of X-ray-emitting active galactic nuclei from the ROSAT all sky and Sloan digital sky surveys: The data release 5 sample', Astronomical Journal, vol. 133, no. 1, pp. 313-329. https://doi.org/10.1086/509765

A large, uniform sample of X-ray-emitting active galactic nuclei from the ROSAT all sky and Sloan digital sky surveys : The data release 5 sample. / Anderson, Scott F.; Margon, Bruce; Voges, Wolfgang; Plotkin, Richard M.; Syphers, David; Haggard, Daryl; Collinge, Matthew J.; Meyer, Jillian; Strauss, Michael A.; Agüeros, Marcel A.; Hall, Patrick B.; Homer, L.; Ivezić, Željko; Richards, Gordon T.; Richmond, Michael W.; Schneider, Donald P.; Stinson, Gregory; Vanden Berk, Daniel E.; York, Donald G.

In: Astronomical Journal, Vol. 133, No. 1, 01.01.2007, p. 313-329.

Research output: Contribution to journalReview article

TY - JOUR

T1 - A large, uniform sample of X-ray-emitting active galactic nuclei from the ROSAT all sky and Sloan digital sky surveys

T2 - The data release 5 sample

AU - Anderson, Scott F.

AU - Margon, Bruce

AU - Voges, Wolfgang

AU - Plotkin, Richard M.

AU - Syphers, David

AU - Haggard, Daryl

AU - Collinge, Matthew J.

AU - Meyer, Jillian

AU - Strauss, Michael A.

AU - Agüeros, Marcel A.

AU - Hall, Patrick B.

AU - Homer, L.

AU - Ivezić, Željko

AU - Richards, Gordon T.

AU - Richmond, Michael W.

AU - Schneider, Donald P.

AU - Stinson, Gregory

AU - Vanden Berk, Daniel E.

AU - York, Donald G.

PY - 2007/1/1

Y1 - 2007/1/1

N2 - We describe further results of a program aimed at yielding ∼10 4 fully characterized optical identifications of ROSAT X-ray sources. Our program employs X-ray data from the ROSAT All Sky Survey (RASS) and both optical imaging and spectroscopic data from the Sloan Digital Sky Survey (SDSS). RASS/SDSS data from 5740 deg2 of sky spectroscopically covered in SDSS Data Release 5 provide an expanded catalog of 7000 confirmed quasars and other active galactic nuclei (AGNs) that are probable RASS identifications. Again, in our expanded catalog the identifications as X-ray sources are statistically secure, with only a few percent of the SDSS AGNs likely to be randomly superposed on unrelated RASS X-ray sources. Most identifications continue to be quasars and Seyfert 1 galaxies with 15 < m < 21 and 0.01 < z < 4, but the total sample size has grown to include very substantial numbers of even quite rare AGNs, e.g., it now includes several hundreds of candidate X-ray-emitting BL Lac objects and narrow-line Seyfert 1 galaxies. In addition to exploring rare subpopulations, such a large total sample may be useful when considering correlations between the X-ray and the optical and may also serve as a resource list from which to select the "best" object (e.g., X-ray-brightest AGN of a certain subclass at a preferred redshift or luminosity) for follow-up X-ray spectral or alternate detailed studies.

AB - We describe further results of a program aimed at yielding ∼10 4 fully characterized optical identifications of ROSAT X-ray sources. Our program employs X-ray data from the ROSAT All Sky Survey (RASS) and both optical imaging and spectroscopic data from the Sloan Digital Sky Survey (SDSS). RASS/SDSS data from 5740 deg2 of sky spectroscopically covered in SDSS Data Release 5 provide an expanded catalog of 7000 confirmed quasars and other active galactic nuclei (AGNs) that are probable RASS identifications. Again, in our expanded catalog the identifications as X-ray sources are statistically secure, with only a few percent of the SDSS AGNs likely to be randomly superposed on unrelated RASS X-ray sources. Most identifications continue to be quasars and Seyfert 1 galaxies with 15 < m < 21 and 0.01 < z < 4, but the total sample size has grown to include very substantial numbers of even quite rare AGNs, e.g., it now includes several hundreds of candidate X-ray-emitting BL Lac objects and narrow-line Seyfert 1 galaxies. In addition to exploring rare subpopulations, such a large total sample may be useful when considering correlations between the X-ray and the optical and may also serve as a resource list from which to select the "best" object (e.g., X-ray-brightest AGN of a certain subclass at a preferred redshift or luminosity) for follow-up X-ray spectral or alternate detailed studies.

UR - http://www.scopus.com/inward/record.url?scp=33846496167&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33846496167&partnerID=8YFLogxK

U2 - 10.1086/509765

DO - 10.1086/509765

M3 - Review article

AN - SCOPUS:33846496167

VL - 133

SP - 313

EP - 329

JO - Astronomical Journal

JF - Astronomical Journal

SN - 0004-6256

IS - 1

ER -