| Download | - View final version: Radio continuum sources behind the Large Magellanic Cloud (PDF, 1.5 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1093/mnras/stab2249 |
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| Author | Search for: Filipović, M. D.ORCID identifier: https://orcid.org/0000-0002-4990-9288; Search for: Bojičić, I. S.ORCID identifier: https://orcid.org/0000-0002-4362-9664; Search for: Grieve, K. R.; Search for: Norris, R. P.ORCID identifier: https://orcid.org/0000-0002-4597-1906; Search for: Tothill, N. F. H.; Search for: Shobhana, D.; Search for: Rudnick, L.ORCID identifier: https://orcid.org/0000-0001-5636-7213; Search for: Prandoni, I.ORCID identifier: https://orcid.org/0000-0001-9680-7092; Search for: Andernach, H.ORCID identifier: https://orcid.org/0000-0003-4873-1681; Search for: Hurley-Walker, N.; Search for: Alsaberi, R. Z. E.ORCID identifier: https://orcid.org/0000-0001-5609-7372; Search for: Anderson, C. S.ORCID identifier: https://orcid.org/0000-0002-6243-7879; Search for: Collier, J. D.ORCID identifier: https://orcid.org/0000-0002-2326-7432; Search for: Crawford, E. J.ORCID identifier: https://orcid.org/0000-0001-5197-1091; Search for: For, B-QORCID identifier: https://orcid.org/0000-0002-0196-5248; Search for: Galvin, T. J.ORCID identifier: https://orcid.org/0000-0002-2801-766X; Search for: Haberl, F.; Search for: Hopkins, A. M.; Search for: Ingallinera, A.ORCID identifier: https://orcid.org/0000-0002-3137-473X; Search for: Kavanagh, P. J.; Search for: Koribalski, B. S.ORCID identifier: https://orcid.org/0000-0003-4351-993X; Search for: Kothes, R.1; Search for: Leahy, D.ORCID identifier: https://orcid.org/0000-0002-4814-958X; Search for: Leverenz, H.ORCID identifier: https://orcid.org/0000-0001-8772-9475; Search for: Maggi, P.; Search for: Maitra, C.ORCID identifier: https://orcid.org/0000-0002-0766-7313; Search for: Marvil, J.; Search for: Pannuti, T. G.; Search for: Park, L. A. F.; Search for: Payne, J. L.; Search for: Pennock, C. M.ORCID identifier: https://orcid.org/0000-0003-2164-5337; Search for: Riggi, S.ORCID identifier: https://orcid.org/0000-0001-6368-8330; Search for: Rowell, G.; Search for: Sano, H.ORCID identifier: https://orcid.org/0000-0003-2062-5692; Search for: Sasaki, M.ORCID identifier: https://orcid.org/0000-0001-5302-1866; Search for: Staveley-Smith, L.ORCID identifier: https://orcid.org/0000-0002-8057-0294; Search for: Trigilio, C.; Search for: Umana, G.; Search for: Urošević, D.; Search for: Van Loon, J. Th; Search for: Vardoulaki, E. |
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| Affiliation | - National Research Council of Canada. Herzberg Astronomy and Astrophysics
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| Funder | Search for: Government of Western Australia; Search for: Australian Research Council; Search for: INAF; Search for: Universidad de Guanajuato; Search for: Ministry of Education, Science and Technological Development of the Republic of Serbia |
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| Format | Text, Article |
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| Subject | catalogues; galaxies: active; Magellanic Clouds; radio continuum: general |
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| 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. |
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| Publication date | 2021-08-06 |
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| Publisher | Oxford Academic
Royal Astronomical Society |
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| Licence | |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 349b7b18-6dac-4fcd-91f5-ef137e8297c2 |
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| Record created | 2023-04-20 |
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| Record modified | 2023-04-20 |
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