2005A&A...429L..47S


Query : 2005A&A...429L..47S

2005A&A...429L..47S - Astronomy and Astrophysics, volume 429, L47-50 (2005/1-3)

The soft X-ray counterpart of the newly discovered INTEGRAL source IGR J16195-4945.

SIDOLI L., VERCELLONE S., MEREGHETTI S. and TAVANI M.

Abstract (from CDS):

The INTEGRAL satellite, during its regular scanning observations of the Galactic plane, has discovered several new X-ray sources emitting above 20 keV. The nature of the great majority of them is still unknown. Here we report on the likely low energy counterpart, observed with ASCA in 1994 and 1997, of one of these sources, IGR J16195-4945. The ASCA source is faint (F2–10keV∼10–11erg/cm2/s), highly absorbed (NH∼1023cm–2) and has a rather hard spectrum (photon index ∼0.6). These spectral properties are suggestive of a neutron star in a High Mass X-ray Binary. Our analysis of all the public INTEGRAL data of IGR J16195-4945 shows that this source is variable and was in a high state with a 20-40keV flux of ∼17mCrab in two occasions in March 2003.

Abstract Copyright:

Journal keyword(s): individual: IGR J16195-4945, AX J161929-4945 - X-rays: binaries

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 HD 146628 * 16 19 29.5214538960 -49 45 40.715149896 10.23 10.58 10.06 10.02   B1/2Ia 70 1
2 IGR J16195-4945 HXB 16 19 32.1832111152 -49 44 30.565493340   17.4 16.8 15.3 15.295 ON9.7Iab 54 0
3 SAX J1802.7-2017 HXB 18 02 41.9407199832 -20 17 17.312648064   17.4 16.4     BIII 90 0
4 IGR J18410-0535 HXB 18 41 00.4353543192 -05 35 46.474692324   15.91   13.645 11.631 B1Ib 138 0

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