Optical identification of four INTEGRAL sources
ATel #880; Burenin R. (IKI), Mescheryakov A. (IKI), Revnivtsev M. (IKI, MPA), Bikmaev I. (KSU, AST), Sunyaev R. (MPA, IKI)
on 5 Sep 2006; 07:38 UT
Credential Certification: Rodion Burenin (firstname.lastname@example.org)
Subjects: Optical, X-ray, Gamma Ray, AGN, Binary
We report optical spectroscopic identification of four INTEGRAL sources,
detected in INTEGRAL all-sky survey (Krivonos et al. 2006). Original
astrometric positions of all sources were refined using ROSAT, Chandra or
Optical data were obtained with Russian-Turkish 1.5-m telescope (RTT-150,
Bakirlitepe, TUBITAK National Observatory, Turkey), using TUG Faint Object
Spectrograph and Camera (TFOSC).
IGR J03334+3718 --- The source was also detected in ROSAT All-Sky Survey
(1RXS J033316.2+371815). These data strongly diminish the positional
uncertainty of the source (down to ~= 10 arcsec). The X-ray source can be
clearly associated with bright galaxy with star-like nucleus at RA,Dec =
03:33:18.8 +37:18:11 (J2000). The optical spectrum of the galaxy nucleus
shows redshifted and broadened H_alpha (blended with NII), H_beta and other
Balmer lines and narrow emission lines [OIII] 4959,5007 and others. Using
the narrow lines only we measured the redshift z=0.05471. The broad emission
lines are typical for Seyfert 1 AGN.
IGR J13038+5348 --- The source was observed by SWIFT/XRT and is associated
with the nucleus of bright nearby galaxy MCG +09-21-096, which was also
classified as emission line object (SBS 1301+540) in Second Byurakan
Spectral Sky Survey (Markarian et al. 1983-1986). The optical spectrum of
the source is very similar to that of IGR J03334+3718. It shows redshifted
and broadened Balmer lines and narrow emission lines. Using the narrow lines
only we measured the redshift z=0.02988. The broad emission lines are
typical for Seyfert 1 AGN.
IGR J18048-1455 --- The exact astrometry was obtained using Chandra
observations of this field (Mar. 28, 2006): RA,Dec = 18:04:38.96 -14:56:47.3
(J2000). The optical object near this position shows H_alpha emission line
of EW=-14 angstroms at zero redshift. This is consistent with a Galactic
high mass X-ray binary.
IGRJ20006+3210 --- The source was observed by SWIFT/XRT. The optical
counterpart at RA,Dec = 20:00:21.9 +32:11:23 (J2000) shows H_alpha emission
line of EW=-10 angstroms at zero redshift. This is consistent with a
Galactic high mass X-ray binary.