The nature of 50 Palermo Swift-BAT hard X-ray objects through optical spectroscopy

被引：20

作者：

Rojas, A. F. ^{[1
]}

Masetti, N. ^{[1
,2
]}

Minniti, D. ^{[1
,3
,4
]}

Jimenez-Bailon, E. ^{[5
]}

Chavushyan, V. ^{[6
]}

Hau, G. ^{[7
]}

McBride, V. A. ^{[8
,9
]}

Bassani, L. ^{[2
]}

Bazzano, A. ^{[10
]}

Bird, A. J. ^{[11
]}

Galaz, G. ^{[12
]}

Gavignaud, I. ^{[1
]}

Landi, R. ^{[2
]}

Malizia, A. ^{[2
]}

Morelli, L. ^{[13
,14
]}

Palazzi, E. ^{[2
]}

Patino-Alvarez, V. ^{[15
]}

Stephen, J. B. ^{[2
]}

Ubertini, P. ^{[10
]}

机构：

[1] Univ Andres Bello, Dept Ciencias Fis, Fernandez Concha 700,Campus Casona, Santiago, Chile

[2] Ist Astrofis Spaziale & Fis Cosm Bologna, INAF, Via Gobetti 101, I-40129 Bologna, Italy

[3] Millennium Inst Astrophys, Av Vicuna Mackenna 4860, Santiago 7820436, Chile

[4] Vatican Observ, I-00120 Vatican City, Vatican

[5] Univ Nacl Autonoma Mexico, Apartado Postal 70-264, Mexico City 04510, DF, Mexico

[6] Inst Nacl Astrofis Opt & Electr, Apartado Postal 51-216, Puebla 72000, Mexico

[7] European Southern Observ, Ave Alonso Cordoba 3107,Casilla 19001, Santiago, Chile

[8] Univ Cape Town, Cosmol & Grav Ctr, Dept Astron Astrophys, Private Bag X3, ZA-7701 Rondebosch, South Africa

[9] South African Astron Observ, ZA-7935 Observatory, South Africa

[10] Inst Astrofis Planetol Spaziali, INAF, Via Fosso Cavaliere 100, I-00133 Rome, Italy

[11] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England

[12] Pontificia Univ Catolica Chile, Fac Fis, Inst Astrofis, Casilla 306, Santiago 22, Chile

[13] Univ Padua, Dipartimento Fis Astron G Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy

[14] Osserv Astron Padova, INAF, Vicolo Osservatorio 5, I-35122 Padua, Italy

[15] Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany

来源：

ASTRONOMY & ASTROPHYSICS | 2017年 / 602卷

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

galaxies: Seyfert; quasars: emission lines; X-rays: binaries; novae; cataclysmic variables; techniques: spectroscopic; ACTIVE GALACTIC NUCLEI; ALL-SKY SURVEY; BLACK-HOLE; INTEGRAL OBJECTS; COMPTON-THICK; NEUTRON-STAR; MU-M; IDENTIFICATION; GALAXIES; DISCOVERY;

D O I：

10.1051/0004-6361/201629463

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 quasistellar 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.

引用

页数：25

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