Journal
ASTRONOMY & ASTROPHYSICS
Volume 448, Issue 3, Pages 1101-1106Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361:20053411
Keywords
X-rays : binaries; X-rays : individuals : EXO 1912+098, IGR J19140+0951, 2MASS 19140422+0952577
Categories
Ask authors/readers for more resources
IGR J19140+0951 was discovered by INTEGRAL in 2003 in the 4-100 keV band. Observations with INTEGRAL and RXTE provide a tentative identification as a high-mass X-ray binary (HMXB) with a neutron star as accretor. However, an optical counterpart was thus far not established, nor was the presence of a pulsar which is commonly observed in HMXBs. We observed IGR J19140+0951 with Chandra and find the source to be active at a similar flux as previous measurements. The lightcurve shows a marginally significant oscillation at 6.5 ks which requires confirmation. We determine a sub-arcsecond position from the Chandra data and identify the heavily reddened optical counterpart 2MASS 19140422+0952577 in the 2MASS catalog. Optical follow-up observations with the William Herschel Telescope at La Palma exhibit a continuum spectrum coming out of extinction above 7000 angstrom without strong absorption or emission features. V, I and K-s band photometry point to an optical counterpart with an extinction of A(V) = 11 +/- 2. The extinction is consistent with the interstellar value. None of the data reject the suspicion that IGR J19140+0951 is an HMXB with additional circumstellar obscuration around the accretor.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available