The 100 strongest radio point sources in the field of the Large Magellanic Cloud at 1.4 GHz

J. L. Payne; L. A. Tauber; M. D. Filipović; E. J. Crawford; A. Y. De Horta

doi:10.2298/SAJ0978065P

The 100 strongest radio point sources in the field of the Large Magellanic Cloud at 1.4 GHz

J. L. Payne, L. A. Tauber, M. D. Filipović, E. J. Crawford, A. Y. De Horta

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4 Citations (Scopus)

Abstract

We present the 100 strongest 1.4 GHz point sources from a new mosaic image in the direction of the Large Magellanic Cloud (LMC). The observations making up the mosaic were made using Australia Telescope Compact Array (ATCA) over a ten year period and were combined with Parkes single dish data at 1.4 GHz to complete the image for short spacing. An initial list of co-identifications within 10” at 0.843, 4.8 and 8.6 GHz consisted of 2682 sources. Elimination of extended objects and artifact noise allowed the creation of a refined list containing 1988 point sources. Most of these are presumed to be background objects seen through the LMC; a small portion may represent compact HII regions, young SNRs and radio planetary nebulae. For the 1988 point sources we find a preliminary average spectral index of -0.53 and present a 1.4 GHz image showing source location in the direction of the LMC.

Original language	English
Pages (from-to)	65-70
Number of pages	6
Journal	Serbian Astronomical Journal
Volume	178
DOIs	https://doi.org/10.2298/SAJ0978065P
Publication status	Published - 2009

Keywords

Magellanic Clouds
galaxies
point sources

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10.2298/SAJ0978065P

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title = "The 100 strongest radio point sources in the field of the Large Magellanic Cloud at 1.4 GHz",

abstract = "We present the 100 strongest 1.4 GHz point sources from a new mosaic image in the direction of the Large Magellanic Cloud (LMC). The observations making up the mosaic were made using Australia Telescope Compact Array (ATCA) over a ten year period and were combined with Parkes single dish data at 1.4 GHz to complete the image for short spacing. An initial list of co-identifications within 10” at 0.843, 4.8 and 8.6 GHz consisted of 2682 sources. Elimination of extended objects and artifact noise allowed the creation of a refined list containing 1988 point sources. Most of these are presumed to be background objects seen through the LMC; a small portion may represent compact HII regions, young SNRs and radio planetary nebulae. For the 1988 point sources we find a preliminary average spectral index of -0.53 and present a 1.4 GHz image showing source location in the direction of the LMC.",

keywords = "Magellanic Clouds, galaxies, point sources",

author = "Payne, {J. L.} and Tauber, {L. A.} and Filipovi{\'c}, {M. D.} and Crawford, {E. J.} and {De Horta}, {A. Y.}",

year = "2009",

doi = "10.2298/SAJ0978065P",

language = "English",

volume = "178",

pages = "65--70",

journal = "Serbian Astronomical Journal",

issn = "1450-698X",

publisher = "Astronomical Observatory of Belgrade",

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TY - JOUR

T1 - The 100 strongest radio point sources in the field of the Large Magellanic Cloud at 1.4 GHz

AU - Payne, J. L.

AU - Tauber, L. A.

AU - Filipović, M. D.

AU - Crawford, E. J.

AU - De Horta, A. Y.

PY - 2009

Y1 - 2009

N2 - We present the 100 strongest 1.4 GHz point sources from a new mosaic image in the direction of the Large Magellanic Cloud (LMC). The observations making up the mosaic were made using Australia Telescope Compact Array (ATCA) over a ten year period and were combined with Parkes single dish data at 1.4 GHz to complete the image for short spacing. An initial list of co-identifications within 10” at 0.843, 4.8 and 8.6 GHz consisted of 2682 sources. Elimination of extended objects and artifact noise allowed the creation of a refined list containing 1988 point sources. Most of these are presumed to be background objects seen through the LMC; a small portion may represent compact HII regions, young SNRs and radio planetary nebulae. For the 1988 point sources we find a preliminary average spectral index of -0.53 and present a 1.4 GHz image showing source location in the direction of the LMC.

AB - We present the 100 strongest 1.4 GHz point sources from a new mosaic image in the direction of the Large Magellanic Cloud (LMC). The observations making up the mosaic were made using Australia Telescope Compact Array (ATCA) over a ten year period and were combined with Parkes single dish data at 1.4 GHz to complete the image for short spacing. An initial list of co-identifications within 10” at 0.843, 4.8 and 8.6 GHz consisted of 2682 sources. Elimination of extended objects and artifact noise allowed the creation of a refined list containing 1988 point sources. Most of these are presumed to be background objects seen through the LMC; a small portion may represent compact HII regions, young SNRs and radio planetary nebulae. For the 1988 point sources we find a preliminary average spectral index of -0.53 and present a 1.4 GHz image showing source location in the direction of the LMC.

KW - Magellanic Clouds

KW - galaxies

KW - point sources

UR - http://handle.uws.edu.au:8081/1959.7/549370

U2 - 10.2298/SAJ0978065P

DO - 10.2298/SAJ0978065P

M3 - Article

SN - 1450-698X

VL - 178

SP - 65

EP - 70

JO - Serbian Astronomical Journal

JF - Serbian Astronomical Journal

ER -

The 100 strongest radio point sources in the field of the Large Magellanic Cloud at 1.4 GHz

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Keywords

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