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dc.contributor.author
Marchesini, Ezequiel Joaquín  
dc.contributor.author
Masetti, Nicola  
dc.contributor.author
Chavushyan, V.  
dc.contributor.author
Cellone, Sergio Aldo  
dc.contributor.author
Andruchow, Ileana  
dc.contributor.author
Bassani, L.  
dc.contributor.author
Bazzano, A.  
dc.contributor.author
Jiménez-Bailón, E.  
dc.contributor.author
Landi, R.  
dc.contributor.author
Malizia, A.  
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Palazzi, E.  
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Patiño Álvarez, V.  
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Rodríguez Castillo, G. A.  
dc.contributor.author
Stephen, J. B.  
dc.contributor.author
Ubertini, P.  
dc.date.available
2018-03-05T17:12:00Z  
dc.date.issued
2016-11  
dc.identifier.citation
Marchesini, Ezequiel Joaquín; Masetti, Nicola; Chavushyan, V.; Cellone, Sergio Aldo; Andruchow, Ileana; et al.; Looking for blazars in a sample of unidentified high-energy emitting Fermi sources; EDP Sciences; Astronomy and Astrophysics; 596; A10; 11-2016; 10-18  
dc.identifier.issn
0004-6361  
dc.identifier.uri
http://hdl.handle.net/11336/37791  
dc.description.abstract
Context. Based on their overwhelming dominance among associated Fermi γ-ray catalogue sources, it is expected that a large fraction of the unidentified Fermi objects are blazars. Through crossmatching between the positions of unidentified γ-ray sources from the First Fermi Catalog of γ-ray sources emitting above 10 GeV (1FHL) and the ROSAT and Swift/XRT catalogues of X-ray objects and between pointed XRT observations, a sample of 36 potential associations was found in previous works with less than 15 arcsec of positional offset. One-third of them have recently been classified; the remainder, though believed to belong to the blazar class, still lack spectroscopic classifications. Aims. We study the optical spectrum of the putative counterparts of these unidentified gamma-ray sources in order to find their redshifts and to determine their nature and main spectral characteristics. Methods. An observational campaign was carried out on the putative counterparts of 13 1FHL sources using medium-resolution optical spectroscopy from the Osservatorio Astronomico di Bologna in Loiano, Italy; the Telescopio Nazionale Galileo and the Nordic Optical Telescope, both in the Canary Islands, Spain; and the Observatorio Astronómico Nacional San Pedro Mártir in Baja California, Mexico. Results. We were able to classify 14 new objects based on their continuum shapes and spectral features. Conclusions. Twelve new blazars were found, along with one new quasar and one new narrow line Seyfert 1 (NLS1) to be potentially associated with the 1FHL sources of our sample. Redshifts or lower limits were obtained when possible alongside central black hole mass and luminosity estimates for the NLS1 and the quasar.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
EDP Sciences  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Gamma Rays  
dc.subject
X Rays  
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Active Galaxies  
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Bl Lacertae Objects  
dc.subject.classification
Astronomía  
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Ciencias Físicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Looking for blazars in a sample of unidentified high-energy emitting Fermi sources  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-02-07T17:03:24Z  
dc.journal.volume
596  
dc.journal.number
A10  
dc.journal.pagination
10-18  
dc.journal.pais
Francia  
dc.journal.ciudad
Paris  
dc.description.fil
Fil: Marchesini, Ezequiel Joaquín. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina  
dc.description.fil
Fil: Masetti, Nicola. Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna; Italia  
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Fil: Chavushyan, V.. Instituto Nacional de Astrofísica, Óptica y Electrónica; México  
dc.description.fil
Fil: Cellone, Sergio Aldo. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. 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  
dc.description.fil
Fil: Andruchow, Ileana. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. 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  
dc.description.fil
Fil: Bassani, L.. Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna; Italia  
dc.description.fil
Fil: Bazzano, A.. Istituto di Astrofisica e Planetologia Spaziali; Italia  
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Fil: Jiménez-Bailón, E.. Universidad Nacional Autónoma de México; México  
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Fil: Landi, R.. Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna; Italia  
dc.description.fil
Fil: Malizia, A.. Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna; Italia  
dc.description.fil
Fil: Palazzi, E.. Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna; Italia  
dc.description.fil
Fil: Patiño Álvarez, V.. Instituto Nacional de Astrofísica, Óptica y Electrónica; México  
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Fil: Rodríguez Castillo, G. A.. Osservatorio Astronomico di Roma; Italia  
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Fil: Stephen, J. B.. Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna; Italia  
dc.description.fil
Fil: Ubertini, P.. Istituto di Astrofisica e Planetologia Spaziali; Italia  
dc.journal.title
Astronomy and Astrophysics  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361/201629028  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2016/12/aa29028-16/aa29028-16.html