The extended Chandra deep field-south survey

Chandra point-source catalogs

B. D. Lehmer, W. N. Brandt, D. M. Alexander, F. E. Bauer, D. P. Schneider, P. Tozzi, J. Bergeron, G. P. Garmire, R. Giacconi, R. Gilli, G. Hasinger, A. E. Hornschemeier, A. M. Koekemoer, V. Mainieri, T. Miyaji, M. Nonino, P. Rosati, J. D. Silverman, G. Szokoly, C. Vignali

Research output: Contribution to journalArticle

223 Citations (Scopus)

Abstract

We present Chandra point-source catalogs for the Extended Chandra Deep Field-South (E-CDF-S) survey. The E-CDF-S consists of four contiguous 250 ks Chandra observations covering an approximately square region of total solid angle ≈0.3 deg 2, which flank the existing ≈1 Ms Chandra Deep Field-South (CDF-S). The survey reaches sensitivity limits of ≈1.1 × 10 -16 and ≈6.7 × 10 -16 ergs cm -2 s -1 for the 0.5-2.0 and 2-8 keV bands, respectively. We detect 762 distinct X-ray point sources within the E-CDF-S exposure; 589 of these sources are new (i.e., not previously detected in the ≈1 Ms CDF-S). This brings the total number of X-ray point sources detected in the E-CDF-S region to 915 (via the E-CDF-S and ≈1 Ms CDF-S observations). Source positions are determined using matched-filter and centroiding techniques; the median positional uncertainty is ≈0″.35. The basic X-ray and optical properties of these sources indicate a variety of source types, although absorbed active galactic nuclei (AGNs) seem to dominate. In addition to our main Chandra catalog, we constructed a supplementary source catalog containing 33 lower significance X-ray point sources that have bright optical counterparts (R <23). These sources generally have X-ray-to-optical flux ratios expected for normal and starburst galaxies, which lack a strong AGN component. We present basic number-count results for our main Chandra catalog and find good agreement with the ≈1 Ms CDF-S for sources with 0.5-2.0 and 2-8 keV fluxes greater than 3 × 10 -16 and 1 × 10 -15 ergs cm -2 s -1, respectively. Furthermore, three extended sources are detected in the 0.5-2.0 keV band, which are found to be likely associated with galaxy groups or poor clusters at z ≈ 0.1-0.7; these have typical rest-frame 0.5-2.0 keV luminosities of (1-5) × 10 42 ergs s -1.

Original languageEnglish
Pages (from-to)21-40
Number of pages20
JournalAstrophysical Journal, Supplement Series
Volume161
Issue number1
DOIs
Publication statusPublished - Nov 2005

Fingerprint

point sources
catalogs
point source
erg
x rays
active galactic nuclei
optical property
galactic clusters
matched filters
starburst galaxies
filter
coverings
luminosity
galaxies
optical properties
sensitivity

Keywords

  • Cosmology: observations
  • Diffuse radiation
  • Galaxies: active
  • Machine-readable tables
  • Surveys
  • X-rays Online material: color figure

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Lehmer, B. D., Brandt, W. N., Alexander, D. M., Bauer, F. E., Schneider, D. P., Tozzi, P., ... Vignali, C. (2005). The extended Chandra deep field-south survey: Chandra point-source catalogs. Astrophysical Journal, Supplement Series, 161(1), 21-40. https://doi.org/10.1086/444590

The extended Chandra deep field-south survey : Chandra point-source catalogs. / Lehmer, B. D.; Brandt, W. N.; Alexander, D. M.; Bauer, F. E.; Schneider, D. P.; Tozzi, P.; Bergeron, J.; Garmire, G. P.; Giacconi, R.; Gilli, R.; Hasinger, G.; Hornschemeier, A. E.; Koekemoer, A. M.; Mainieri, V.; Miyaji, T.; Nonino, M.; Rosati, P.; Silverman, J. D.; Szokoly, G.; Vignali, C.

In: Astrophysical Journal, Supplement Series, Vol. 161, No. 1, 11.2005, p. 21-40.

Research output: Contribution to journalArticle

Lehmer, BD, Brandt, WN, Alexander, DM, Bauer, FE, Schneider, DP, Tozzi, P, Bergeron, J, Garmire, GP, Giacconi, R, Gilli, R, Hasinger, G, Hornschemeier, AE, Koekemoer, AM, Mainieri, V, Miyaji, T, Nonino, M, Rosati, P, Silverman, JD, Szokoly, G & Vignali, C 2005, 'The extended Chandra deep field-south survey: Chandra point-source catalogs', Astrophysical Journal, Supplement Series, vol. 161, no. 1, pp. 21-40. https://doi.org/10.1086/444590
Lehmer BD, Brandt WN, Alexander DM, Bauer FE, Schneider DP, Tozzi P et al. The extended Chandra deep field-south survey: Chandra point-source catalogs. Astrophysical Journal, Supplement Series. 2005 Nov;161(1):21-40. https://doi.org/10.1086/444590
Lehmer, B. D. ; Brandt, W. N. ; Alexander, D. M. ; Bauer, F. E. ; Schneider, D. P. ; Tozzi, P. ; Bergeron, J. ; Garmire, G. P. ; Giacconi, R. ; Gilli, R. ; Hasinger, G. ; Hornschemeier, A. E. ; Koekemoer, A. M. ; Mainieri, V. ; Miyaji, T. ; Nonino, M. ; Rosati, P. ; Silverman, J. D. ; Szokoly, G. ; Vignali, C. / The extended Chandra deep field-south survey : Chandra point-source catalogs. In: Astrophysical Journal, Supplement Series. 2005 ; Vol. 161, No. 1. pp. 21-40.
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T1 - The extended Chandra deep field-south survey

T2 - Chandra point-source catalogs

AU - Lehmer, B. D.

AU - Brandt, W. N.

AU - Alexander, D. M.

AU - Bauer, F. E.

AU - Schneider, D. P.

AU - Tozzi, P.

AU - Bergeron, J.

AU - Garmire, G. P.

AU - Giacconi, R.

AU - Gilli, R.

AU - Hasinger, G.

AU - Hornschemeier, A. E.

AU - Koekemoer, A. M.

AU - Mainieri, V.

AU - Miyaji, T.

AU - Nonino, M.

AU - Rosati, P.

AU - Silverman, J. D.

AU - Szokoly, G.

AU - Vignali, C.

PY - 2005/11

Y1 - 2005/11

N2 - We present Chandra point-source catalogs for the Extended Chandra Deep Field-South (E-CDF-S) survey. The E-CDF-S consists of four contiguous 250 ks Chandra observations covering an approximately square region of total solid angle ≈0.3 deg 2, which flank the existing ≈1 Ms Chandra Deep Field-South (CDF-S). The survey reaches sensitivity limits of ≈1.1 × 10 -16 and ≈6.7 × 10 -16 ergs cm -2 s -1 for the 0.5-2.0 and 2-8 keV bands, respectively. We detect 762 distinct X-ray point sources within the E-CDF-S exposure; 589 of these sources are new (i.e., not previously detected in the ≈1 Ms CDF-S). This brings the total number of X-ray point sources detected in the E-CDF-S region to 915 (via the E-CDF-S and ≈1 Ms CDF-S observations). Source positions are determined using matched-filter and centroiding techniques; the median positional uncertainty is ≈0″.35. The basic X-ray and optical properties of these sources indicate a variety of source types, although absorbed active galactic nuclei (AGNs) seem to dominate. In addition to our main Chandra catalog, we constructed a supplementary source catalog containing 33 lower significance X-ray point sources that have bright optical counterparts (R <23). These sources generally have X-ray-to-optical flux ratios expected for normal and starburst galaxies, which lack a strong AGN component. We present basic number-count results for our main Chandra catalog and find good agreement with the ≈1 Ms CDF-S for sources with 0.5-2.0 and 2-8 keV fluxes greater than 3 × 10 -16 and 1 × 10 -15 ergs cm -2 s -1, respectively. Furthermore, three extended sources are detected in the 0.5-2.0 keV band, which are found to be likely associated with galaxy groups or poor clusters at z ≈ 0.1-0.7; these have typical rest-frame 0.5-2.0 keV luminosities of (1-5) × 10 42 ergs s -1.

AB - We present Chandra point-source catalogs for the Extended Chandra Deep Field-South (E-CDF-S) survey. The E-CDF-S consists of four contiguous 250 ks Chandra observations covering an approximately square region of total solid angle ≈0.3 deg 2, which flank the existing ≈1 Ms Chandra Deep Field-South (CDF-S). The survey reaches sensitivity limits of ≈1.1 × 10 -16 and ≈6.7 × 10 -16 ergs cm -2 s -1 for the 0.5-2.0 and 2-8 keV bands, respectively. We detect 762 distinct X-ray point sources within the E-CDF-S exposure; 589 of these sources are new (i.e., not previously detected in the ≈1 Ms CDF-S). This brings the total number of X-ray point sources detected in the E-CDF-S region to 915 (via the E-CDF-S and ≈1 Ms CDF-S observations). Source positions are determined using matched-filter and centroiding techniques; the median positional uncertainty is ≈0″.35. The basic X-ray and optical properties of these sources indicate a variety of source types, although absorbed active galactic nuclei (AGNs) seem to dominate. In addition to our main Chandra catalog, we constructed a supplementary source catalog containing 33 lower significance X-ray point sources that have bright optical counterparts (R <23). These sources generally have X-ray-to-optical flux ratios expected for normal and starburst galaxies, which lack a strong AGN component. We present basic number-count results for our main Chandra catalog and find good agreement with the ≈1 Ms CDF-S for sources with 0.5-2.0 and 2-8 keV fluxes greater than 3 × 10 -16 and 1 × 10 -15 ergs cm -2 s -1, respectively. Furthermore, three extended sources are detected in the 0.5-2.0 keV band, which are found to be likely associated with galaxy groups or poor clusters at z ≈ 0.1-0.7; these have typical rest-frame 0.5-2.0 keV luminosities of (1-5) × 10 42 ergs s -1.

KW - Cosmology: observations

KW - Diffuse radiation

KW - Galaxies: active

KW - Machine-readable tables

KW - Surveys

KW - X-rays Online material: color figure

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