The nature of 50 Palermo Swift-BAT hard X-ray objects through optical spectroscopy
| العنوان: | The nature of 50 Palermo Swift-BAT hard X-ray objects through optical spectroscopy |
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| المؤلفون: | R. Landi, Pietro Ubertini, V. H. Chavushyan, Angela Malizia, I. Gavignaud, Víctor M. Patiño-Álvarez, A. F. Rojas, Loredana Bassani, N. Masetti, Lorenzo Morelli, George Hau, Gaspar Galaz, Dante Minniti, A. J. Bird, Eliana Palazzi, Elena Jiménez-Bailón, John B. Stephen, Angela Bazzano, Vanessa McBride |
| المساهمون: | ITA, USA, GBR, FRA, DEU, ESP, Department of Astronomy, Faculty of Science |
| المصدر: | Astronomy and Astrophysics A124-177 |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Swift, Galaxies: Seyfert, Active galactic nucleus, Astrophysics::High Energy Astrophysical Phenomena, Techniques: spectroscopic, Low-ionization nuclear emission-line region, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, X-rays: binaries, Binaries [X-rays], 0103 physical sciences, novae, cataclysmic variables, Astrophysics::Solar and Stellar Astrophysics, emission lineTechniques: spectroscopic [Quasars], Emission spectrum, Spectroscopy, Novae, 010303 astronomy & astrophysics, Novae , cataclysmic variables, Astrophysics::Galaxy Astrophysics, computer.programming_language, Physics, cataclysmic variables, Quasars: emission lines, 010308 nuclear & particles physics, seyfert [Galaxies], Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Redshift, Galaxy, Space and Planetary Science, Novae, cataclysmic variables, Low Mass, computer |
| الوصف: | We present the nature of 50 hard X-ray emitting objects unveiled through an optical spectroscopy campaign performed at seven telescopes in the northern and southern hemispheres. These objects were detected with the Burst Alert Telescope (BAT) instrument onboard the Swift satellite and listed as of unidentified nature in the 54-month Palermo BAT catalogue. In detail, 45 sources in our sample are identified as active galactic nuclei of which, 27 are classified as type 1 (with broad and narrow emission lines) and 18 are classified as type 2 (with only narrow emission lines). Among the broad-line emission objects, one is a type 1 high-redshift quasi-stellar object, and among the narrow-line emission objects, one is a starburst galaxy, one is a X-ray bright optically normal galaxy, and one is a low ionization nuclear emission line region. We report 30 new redshift measurements, 13 confirmations and 2 more accurate redshift values. The remaining five objects are galactic sources: three are Cataclismic Variables, one is a X-ray Binary probably with a low mass secondary star, and one is an active star. Based on observations obtained from the following observatories: Cerro Tololo Interamerican Observatory (Chile); Astronomical Observatory of Bologna in Loiano (Italy); Observatorio Astronómico Nacional (San Pedro Mártir, Mexico); Radcliffe telescope of the South African Astronomical Observatory (Sutherland, South Africa); Sloan Digital Sky Survey; Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias (Canary Islands, Spain) and New Technology Telescope (NTT) of La Silla Observatory, Chile. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| DOI: | 10.1051/0004-6361/201629463 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::190dc1429caeab6fbadc83f19a0058ee http://hdl.handle.net/20.500.12386/26696 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....190dc1429caeab6fbadc83f19a0058ee |
| قاعدة البيانات: | OpenAIRE |
| DOI: | 10.1051/0004-6361/201629463 |
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