2004A&A...426L..41M


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.24CEST18:13:49

2004A&A...426L..41M - Astronomy and Astrophysics, volume 426, L41-44 (2004/11-1)

Unveiling the nature of three INTEGRAL sources through optical spectroscopy.

MASETTI N., PALAZZI E., BASSANI L., MALIZIA A. and STEPHEN J.B.

Abstract (from CDS):

The results of an optical spectroscopy campaign performed at the Astronomical Observatory of Bologna in Loiano (Italy) on three hard X-ray sources detected by INTEGRAL (IGR J17303-0601, IGR J18027-1455 and IGR J21247+5058) are presented. These data have allowed a determination of the nature for two of them, with IGR J17303-0601 being a low mass X-ray binary in the Galaxy and IGR J18027-1455 a background type 1 Seyfert galaxy at redshift z=0.035. IGR J21247+5058, instead, has a quite puzzling spectroscopic appearance, with a broad, redshifted Hα complex superimposed onto a ``normal'' F/G-type Galactic star continuum: these features, together with the spatially coincident extended radio emission, might suggest a chance alignment between a relatively nearby star and a background radio galaxy. These results underline the still non-negligible importance of smaller telescopes in modern astrophysics.

Abstract Copyright:

Journal keyword(s): X-rays: binaries - X-rays: galaxies - techniques: spectroscopic - X-rays: individual: IGR J17303-0601, IGR J18027-1455, IGR J21247+5058

Simbad objects: 5

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Number of rows : 5

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 1H 1726-058 CV* 17 30 21.9016472695 -05 59 31.840647628   17.04 16.15     ~ 71 0
2 1RXS J180245.5-145432 X 18 02 45.506 -14 54 32.00           ~ 6 1
3 NVSS J180247-145451 Rad 18 02 47 -14 54.9           ~ 5 1
4 2MASXI J1802473-145454 Sy1 18 02 47.3 -14 54 55   19.3       ~ 50 2
5 4C 50.55 Sy1 21 24 39.4 +50 58 25           ~ 85 1

    Equat.    Gal    SGal    Ecl

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2020.10.24-18:13:49

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