Unveiling the nature of INTEGRAL objects through optical spectroscopy: X. A new multi-year, multi-observatory campaign

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dc.contributor.authorMasetti, N
dc.contributor.authorParisi, P
dc.contributor.authorPalazzi, E
dc.contributor.authorJiménez-Bailón, E
dc.contributor.authorChavushyan, V
dc.contributor.authorMcBride, V
dc.contributor.authorRojas, A F
dc.contributor.authorSteward, L
dc.contributor.authorBassani, L
dc.contributor.authorBazzano, A
dc.contributor.authorBird, A J
dc.contributor.authorCharles, P A
dc.contributor.authorGalaz, G
dc.contributor.authorLandi, R
dc.contributor.authorMalizia, A
dc.contributor.authorMason, E
dc.contributor.authorMinniti, D
dc.contributor.authorMorelli, L
dc.contributor.authorSchiavone, F
dc.contributor.authorStephen, J B
dc.contributor.authorUbertini, P
dc.date.accessioned2021-10-08T11:01:10Z
dc.date.available2021-10-08T11:01:10Z
dc.date.issued2013
dc.description.abstractWithin the framework of our program (running since 2004) of identification of hard X-ray INTEGRAL sources through optical spectroscopy, we present the results concerning the nature of 33 high-energy objects. The data were acquired with the use of six telescopes of different sizes and from one on-line archive. The results indicate that the majority of these objects (23 out of 33) are active galactic nuclei (AGNs), whereas 10 are sources in the local Universe with eight of which in the Galaxy and two in the Small Magellanic Cloud (SMC). Among the identified AGNs, 13 are of Type 1 (i.e., with broad emission lines), eight are of Type 2 (with narrow emissions only), and two are X-ray bright, optically normal galaxies with no apparent nuclear activity in the optical. Six of these AGNs lie at high redshift (z > 0.5). Concerning local objects, we found that five of them are Galactic cataclysmic variables, three are high-mass X-ray binaries (two of which lying in the SMC), one is a low-mass X-ray binary, and one is classified as a flare star that is likely of RS CVn type. The main optical properties and inferred physical characteristics of these sources are presented and discussed.
dc.identifier.apacitationMasetti, N., Parisi, P., Palazzi, E., Jiménez-Bailón, E., Chavushyan, V., McBride, V., ... Ubertini, P. (2013). Unveiling the nature of INTEGRAL objects through optical spectroscopy: X. A new multi-year, multi-observatory campaign. <i>Astronomy and Astrophysics</i>, 556(4), A120 - 177. http://hdl.handle.net/11427/35101en_ZA
dc.identifier.chicagocitationMasetti, N, P Parisi, E Palazzi, E Jiménez-Bailón, V Chavushyan, V McBride, A F Rojas, et al "Unveiling the nature of INTEGRAL objects through optical spectroscopy: X. A new multi-year, multi-observatory campaign." <i>Astronomy and Astrophysics</i> 556, 4. (2013): A120 - 177. http://hdl.handle.net/11427/35101en_ZA
dc.identifier.citationMasetti, N., Parisi, P., Palazzi, E., Jiménez-Bailón, E., Chavushyan, V., McBride, V., Rojas, A.F. & Steward, L. et al. 2013. Unveiling the nature of INTEGRAL objects through optical spectroscopy: X. A new multi-year, multi-observatory campaign. <i>Astronomy and Astrophysics.</i> 556(4):A120 - 177. http://hdl.handle.net/11427/35101en_ZA
dc.identifier.issn0004-6361
dc.identifier.issn1432-0746
dc.identifier.ris TY - Journal Article AU - Masetti, N AU - Parisi, P AU - Palazzi, E AU - Jiménez-Bailón, E AU - Chavushyan, V AU - McBride, V AU - Rojas, A F AU - Steward, L AU - Bassani, L AU - Bazzano, A AU - Bird, A J AU - Charles, P A AU - Galaz, G AU - Landi, R AU - Malizia, A AU - Mason, E AU - Minniti, D AU - Morelli, L AU - Schiavone, F AU - Stephen, J B AU - Ubertini, P AB - Within the framework of our program (running since 2004) of identification of hard X-ray INTEGRAL sources through optical spectroscopy, we present the results concerning the nature of 33 high-energy objects. The data were acquired with the use of six telescopes of different sizes and from one on-line archive. The results indicate that the majority of these objects (23 out of 33) are active galactic nuclei (AGNs), whereas 10 are sources in the local Universe with eight of which in the Galaxy and two in the Small Magellanic Cloud (SMC). Among the identified AGNs, 13 are of Type 1 (i.e., with broad emission lines), eight are of Type 2 (with narrow emissions only), and two are X-ray bright, optically normal galaxies with no apparent nuclear activity in the optical. Six of these AGNs lie at high redshift (z > 0.5). Concerning local objects, we found that five of them are Galactic cataclysmic variables, three are high-mass X-ray binaries (two of which lying in the SMC), one is a low-mass X-ray binary, and one is classified as a flare star that is likely of RS CVn type. The main optical properties and inferred physical characteristics of these sources are presented and discussed. DA - 2013 DB - OpenUCT DP - University of Cape Town IS - 4 J1 - Astronomy and Astrophysics LK - https://open.uct.ac.za PY - 2013 SM - 0004-6361 SM - 1432-0746 T1 - Unveiling the nature of INTEGRAL objects through optical spectroscopy: X. A new multi-year, multi-observatory campaign TI - Unveiling the nature of INTEGRAL objects through optical spectroscopy: X. A new multi-year, multi-observatory campaign UR - http://hdl.handle.net/11427/35101 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/35101
dc.identifier.vancouvercitationMasetti N, Parisi P, Palazzi E, Jiménez-Bailón E, Chavushyan V, McBride V, et al. Unveiling the nature of INTEGRAL objects through optical spectroscopy: X. A new multi-year, multi-observatory campaign. Astronomy and Astrophysics. 2013;556(4):A120 - 177. http://hdl.handle.net/11427/35101.en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Astronomy
dc.publisher.facultyFaculty of Science
dc.sourceAstronomy and Astrophysics
dc.source.journalissue4
dc.source.journalvolume556
dc.source.paginationA120 - 177
dc.source.urihttps://dx.doi.org/10.1051/0004-6361/201322026
dc.subject.othergalaxies: Seyfert
dc.subject.otherquasars: emission lines
dc.subject.otherX-rays: binaries
dc.subject.othernovae, cataclysmic variables
dc.subject.otherstars: flare
dc.subject.othernovae
dc.subject.othercataclysmic variables
dc.titleUnveiling the nature of INTEGRAL objects through optical spectroscopy: X. A new multi-year, multi-observatory campaign
dc.typeJournal Article
uct.type.publicationResearch
uct.type.resourceJournal Article
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