A sensitive 1.5 GHz radio survey around the north ecliptic pole

Ronald I. Kollgaard, Wolfgang Brinkmann, Margaret Mcmath Chester, Eric D. Feigelson, Paul Hertz, Patricia Reich, Richard Wielebinski

Research output: Contribution to journalReview article

25 Citations (Scopus)

Abstract

A 29.3 deg2 region surrounding the north ecliptic pole (NEP; α = 18h00m, δ = +66°30′) was mapped with the Very Large Array at 1.5 GHz to support the deepest portion of the ROSAT all-sky soft X-ray survey. The resulting VLA-NEP survey catalog contains 2435 radio sources with flux densities in the range of 0.3-1000 mJy, including over 200 fainter than 1 mJy. The 28 fields of the inner 1°.5 have noise levels σ ≈ 60 μJy, and the 85 fields centered between 1°.5 and 3°.0 from the NEP have σ ≈ 120 μJy. The typical spatial resolution is 20″ HPBW, and most positions are accurate to <2″. Approximately 6% of the sources are found to be extended with size >30″. We have compared the VLA-NEP catalog with four other radio catalogs made at lower resolution, as well as with the NASA Extragalactic Database and find counterparts for ∼18% of the VLA-NEP objects. The normalized, differential radio source count is in agreement with previous studies. Between 1 and 150 mJy the slope of the log N-log S relation is 0.68 ± 0.03. The catalog and related tables are available electronically.

Original languageEnglish (US)
Pages (from-to)145-159
Number of pages15
JournalAstrophysical Journal, Supplement Series
Volume93
Issue number1
DOIs
StatePublished - Jul 1994

Fingerprint

ecliptic
catalogs
poles
radio
Very Large Array (VLA)
spatial resolution
sky
flux density
slopes
x rays

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Kollgaard, R. I., Brinkmann, W., Chester, M. M., Feigelson, E. D., Hertz, P., Reich, P., & Wielebinski, R. (1994). A sensitive 1.5 GHz radio survey around the north ecliptic pole. Astrophysical Journal, Supplement Series, 93(1), 145-159. https://doi.org/10.1086/192049
Kollgaard, Ronald I. ; Brinkmann, Wolfgang ; Chester, Margaret Mcmath ; Feigelson, Eric D. ; Hertz, Paul ; Reich, Patricia ; Wielebinski, Richard. / A sensitive 1.5 GHz radio survey around the north ecliptic pole. In: Astrophysical Journal, Supplement Series. 1994 ; Vol. 93, No. 1. pp. 145-159.
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abstract = "A 29.3 deg2 region surrounding the north ecliptic pole (NEP; α = 18h00m, δ = +66°30′) was mapped with the Very Large Array at 1.5 GHz to support the deepest portion of the ROSAT all-sky soft X-ray survey. The resulting VLA-NEP survey catalog contains 2435 radio sources with flux densities in the range of 0.3-1000 mJy, including over 200 fainter than 1 mJy. The 28 fields of the inner 1°.5 have noise levels σ ≈ 60 μJy, and the 85 fields centered between 1°.5 and 3°.0 from the NEP have σ ≈ 120 μJy. The typical spatial resolution is 20″ HPBW, and most positions are accurate to <2″. Approximately 6{\%} of the sources are found to be extended with size >30″. We have compared the VLA-NEP catalog with four other radio catalogs made at lower resolution, as well as with the NASA Extragalactic Database and find counterparts for ∼18{\%} of the VLA-NEP objects. The normalized, differential radio source count is in agreement with previous studies. Between 1 and 150 mJy the slope of the log N-log S relation is 0.68 ± 0.03. The catalog and related tables are available electronically.",
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Kollgaard, RI, Brinkmann, W, Chester, MM, Feigelson, ED, Hertz, P, Reich, P & Wielebinski, R 1994, 'A sensitive 1.5 GHz radio survey around the north ecliptic pole', Astrophysical Journal, Supplement Series, vol. 93, no. 1, pp. 145-159. https://doi.org/10.1086/192049

A sensitive 1.5 GHz radio survey around the north ecliptic pole. / Kollgaard, Ronald I.; Brinkmann, Wolfgang; Chester, Margaret Mcmath; Feigelson, Eric D.; Hertz, Paul; Reich, Patricia; Wielebinski, Richard.

In: Astrophysical Journal, Supplement Series, Vol. 93, No. 1, 07.1994, p. 145-159.

Research output: Contribution to journalReview article

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AU - Kollgaard, Ronald I.

AU - Brinkmann, Wolfgang

AU - Chester, Margaret Mcmath

AU - Feigelson, Eric D.

AU - Hertz, Paul

AU - Reich, Patricia

AU - Wielebinski, Richard

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