Radio continuum sources behind the Large Magellanic Cloud-Reference-Cited by-同舟云学术

Radio continuum sources behind the Large Magellanic Cloud

Published:2021-08-06 Issue:2 Volume:507 Page:2885-2904
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Filipović M D¹^ORCID,Bojičić I S¹^ORCID,Grieve K R¹,Norris R P¹²^ORCID,Tothill N F H¹,Shobhana D¹,Rudnick L³^ORCID,Prandoni I⁴^ORCID,Andernach H⁵^ORCID,Hurley-Walker N⁶,Alsaberi R Z E¹^ORCID,Anderson C S²^ORCID,Collier J D¹⁷^ORCID,Crawford E J¹^ORCID,For B-Q⁸⁹^ORCID,Galvin T J⁶^ORCID,Haberl F¹⁰,Hopkins A M¹¹¹,Ingallinera A¹²^ORCID,Kavanagh P J¹³,Koribalski B S¹²^ORCID,Kothes R¹⁴,Leahy D¹⁵^ORCID,Leverenz H¹^ORCID,Maggi P¹⁶,Maitra C¹⁰^ORCID,Marvil J¹⁷,Pannuti T G¹⁸,Park L A F¹,Payne J L¹,Pennock C M¹⁹^ORCID,Riggi S¹²^ORCID,Rowell G²⁰,Sano H²¹^ORCID,Sasaki M²²^ORCID,Staveley-Smith L⁷⁸^ORCID,Trigilio C¹²,Umana G¹²,Urošević D²³²⁴,van Loon J Th¹⁹,Vardoulaki E²⁵

Affiliation:

1. School of Science, Western Sydney University, Locked Bag 1797, Penrith South DC, NSW 2751, Australia

2. CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW 1710, Australia

3. Minnesota Institute for Astrophysics, School of Physics and Astronomy, University of Minnesota, 116 Church Street SE, Minneapolis, MN 55455, USA

4. INAF – Istituto di Radioastronomia, Via P. Gobetti 101, I-40129 Bologna, Italy

5. Depto. de Astronomía, DCNE, Universidad de Guanajuato, Cjón. de Jalisco s/n, Col. Valenciana, Guanajuato, CP 36023, Gto., Mexico

6. International Centre for Radio Astronomy Research, Curtin University, Bentley, WA 6102, Australia

7. The Inter-University Institute for Data Intensive Astronomy (IDIA), Department of Astronomy, University of Cape Town, Rondebosch 7701, South Africa

8. ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), Australia

9. International Centre for Radio Astronomy Research, University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia

10. Max-Planck-Institut für extraterrestrische Physik, Gießenbachstraße 1, D-85748 Garching, Germany

11. Australian Astronomical Optics, AAO-Macquarie, Faculty of Science and Engineering, Macquarie University, 105 Delhi Rd, North Ryde, NSW 2113, Australia

12. INAF – Osservatorio Astrofisico di Catania, via Santa Sofia 78, I-95123 Catania, Italia

13. School of Cosmic Physics, Dublin Institute for Advanced Studies, 31 Fitzwilliam Place, Dublin 2, Ireland

14. Dominion Radio Astrophysical Observatory, Herzberg Astronomy and Astrophysics, National Research Council Canada, PO Box 248, Penticton, BC V2A 6J9, Canada

15. Department of Physics and Astronomy, University of Calgary, Calgary, AB T2N 1N4, Canada

16. Observatoire Astronomique de Strasbourg, Université de Strasbourg, CNRS, 11 rue de l’Université, F-67000 Strasbourg, France

17. National Radio Astronomy Observatory, 1003 Lopezville Road, Socorro, NM 87801, USA

18. Department of Physics, Earth Science and Space Systems Engineering, Morehead State University, 235 Martindale Drive, Morehead, KY 40351, USA

19. Lennard-Jones Laboratories, Keele University, Staffordshire ST5 5BG, UK

20. School of Physical Sciences, The University of Adelaide, Adelaide 5005, Australia

21. National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588, Japan

22. Remeis Observatory and ECAP, Universität Erlangen-Nürnberg, Sternwartstraße 7, D-96049 Bamberg, Germany

23. Department of Astronomy, Faculty of Mathematics, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia

24. Isaac Newton Institute of Chile, Yugoslavia Branch

25. Thüringer Landessternwarte, Sternwarte 5, D-07778 Tautenburg, Germany

Abstract

ABSTRACT We present a comprehensive multifrequency catalogue of radio sources behind the Large Magellanic Cloud (LMC) between 0.2 and 20 GHz, gathered from a combination of new and legacy radio continuum surveys. This catalogue covers an area of ∼144 deg2 at angular resolutions from 45 arcsec to ∼3 arcmin. We find 6434 discrete radio sources in total, of which 3789 are detected at two or more radio frequencies. We estimate the median spectral index (α; where Sv ∼ να) of α = −0.89 and mean of −0.88 ± 0.48 for 3636 sources detected exclusively at two frequencies (0.843 and 1.384 GHz) with similar resolution [full width at half-maximum (FWHM) ∼40–45 arcsec]. The large frequency range of the surveys makes it an effective tool to investigate Gigahertz Peak Spectrum (GPS), Compact Steep Spectrum (CSS), and Infrared Faint Radio Source (IFRS) populations within our sample. We find 10 GPS candidates with peak frequencies near 5 GHz, from which we estimate their linear size. 1866 sources from our catalogue are CSS candidates with α < −0.8. We found six candidates for High Frequency Peaker (HFP) sources, whose radio fluxes peak above 5 GHz and no sources with unconstrained peaks and α > 0.5. We found optical counterparts for 343 of the radio continuum sources, of which 128 have a redshift measurement. Finally, we investigate the population of 123 IFRSs found in this study.

Funder

Government of Western Australia

Australian Research Council

INAF

Universidad de Guanajuato

Ministry of Education, Science and Technological Development of the Republic of Serbia

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

Link

http://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stab2249/39593329/stab2249.pdf