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dc.contributor.author
Saponara, Juliana
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dc.contributor.author
Benaglia, Paula
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dc.contributor.author
Andruchow, Ileana
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dc.contributor.author
Ishwara Chandra, C. H.
dc.contributor.author
Intema, H. T.
dc.date.available
2021-11-04T14:15:16Z
dc.date.issued
2021-09
dc.identifier.citation
Saponara, Juliana; Benaglia, Paula; Andruchow, Ileana; Ishwara Chandra, C. H.; Intema, H. T.; Investigation of the double-lobed sources of the Cygnus constellation core; Csiro Publishing; Publications Of The Astronomical Society Of Australia; 38; 9-2021; 1-20
dc.identifier.issn
1323-3580
dc.identifier.uri
http://hdl.handle.net/11336/145979
dc.description.abstract
We present a collection of double-lobed sources towards a area of the Cygnus region at the northern sky, observed at 325 and 610 MHz with the Giant Metrewave Radio Telescope. The 10 resolution achieved at 325 MHz is 5.5 times better than previous studies, while at 610 MHz, these are the first results ever of such a large area, mapped with 6 angular resolution. After a thorough visual inspection of the images at the two bands, we found 43 double-lobed source candidates, proposed as such due to the presence of 2 bright peaks, within a few arcminutes apart, joined by a bridge or a central nucleus. All but two are presented here as a double-lobed candidates for the first time. Thirty nine of the candidates were covered at both bands, and we provide the spectral index information for them. We have searched for positional coincidences between the detected sources/components and other objects from the literature, along the electromagnetic spectrum. Twenty-three candidates possess radio counterpart(s), 12 present infrared counterparts, and 1 showed an overlapping X-ray source. We analysed each candidate considering morphology, counterparts, and spectral indices. Out of the 43 candidates, 37 show characteristics compatible with an extragalactic nature, 2 of probably Galactic origin, 3 remain as dubious cases, though with feature(s) compatible with an extragalactic nature, and the remaining one, evidence of physically unrelated components. The median spectral index of the 40 putative extragalactic sources is . Their celestial surface density at 610 MHz resulted in , across a region lying at the Galactic plane.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Csiro Publishing
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
catalogues
dc.subject
radio continuum: general
dc.subject.classification
Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Investigation of the double-lobed sources of the Cygnus constellation core
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-11-04T13:17:58Z
dc.journal.volume
38
dc.journal.pagination
1-20
dc.journal.pais
Australia
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dc.description.fil
Fil: Saponara, Juliana. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina
dc.description.fil
Fil: Benaglia, Paula. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina
dc.description.fil
Fil: Andruchow, Ileana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
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Fil: Ishwara Chandra, C. H.. National Centre For Radio Astrophysics; India
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Fil: Intema, H. T.. University of Western Australia; Australia
dc.journal.title
Publications Of The Astronomical Society Of Australia
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/product/identifier/S1323358021000436/type/journal_article
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1017/pasa.2021.43
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/pdf/2108.01505.pdf
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