title   
  

Identifications of five INTEGRAL sources via optical spectroscopy

Butler, Suzanne C. and Tomsick, John A. and Chaty, Sylvain and Heras, Juan A. Zurita and Rodriguez, Jerome and Walter, Roland and Kaaret, Philip and Kalemci, Emrah and Özbey, Mehtap (2009) Identifications of five INTEGRAL sources via optical spectroscopy. The Astrophysical Journal, 698 (1). pp. 502-508. ISSN 0004-637X

This is the latest version of this item.

[img]
Preview
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
246Kb

Official URL: http://dx.doi.org/10.1088/0004-637X/698/1/502

Abstract

The International Gamma-Ray Astrophysics Laboratory (INTEGRAL) is discovering hundreds of new hard X-ray sources, many of which remain unidentified. We report on optical spectroscopy of five such sources for which X-ray observations at lower energies (similar to 0.5-10 keV) and higher angular resolutions than INTEGRAL have allowed for unique optical counterparts to be located. We find that INTEGRAL Gamma-Ray (IGR) J16426+6536 and IGR J22292+6647 are Type 1 Seyfert active galactic nuclei (with IGR J16426+6536 further classified as a Seyfert 1.5) which have redshifts of z = 0.323 and z = 0.113, respectively. IGR J18308-1232 is identified as a cataclysmic variable (CV), and we confirm a previous identification of IGR J19267+1325 as a magnetic CV. IGR J18214-1318 is identified as an obscured high-mass X-ray binary (HMXB), which are systems thought to have a compact object embedded in the stellar wind of a massive star. We combine Chandra fluxes with distances based on the optical observations to calculate X-ray luminosities of the HMXB and CVs, finding L0.3-10 (keV) = 5 x 10(36) erg s(-1) for IGR J18214-1318, L0.3-10 keV = 1.3 x 10(32) erg s(-1) for IGR J18308-1232, and L0.3-10 keV = 6.7 x 10(32) erg s(-1) for IGR J19267+1325.

Item Type:Article
Uncontrolled Keywords:galaxies: Seyfert; novae, cataclysmic variables; techniques: spectroscopic; X-rays: binaries; X-rays: individual (IGR J16426+6536, IGR J18214-1318, IGR J18308-1232, IGR J19267+1325, IGR J22292+6647)
Subjects:Q Science > QB Astronomy > QB495-903 Descriptive astronomy > QB799-903 Stars
ID Code:11881
Deposited By:Emrah Kalemci
Deposited On:08 Sep 2009 10:03
Last Modified:25 May 2011 14:07

Available Versions of this Item

Repository Staff Only: item control page