2002A&A...383..568C


Query : 2002A&A...383..568C

2002A&A...383..568C - Astronomy and Astrophysics, volume 383, 568-573 (2002/2-4)

The Galactic Centre source IRS 13E: A post-LBV Wolf-Rayet colliding wind binary?

COKER R.F., PITTARD J.M. and KASTNER J.H.

Abstract (from CDS):

IRS 13E is an infrared, mm and X-ray source in the Galactic Centre. We present the first Chandra X-ray spectrum for IRS 13E and show that it is consistent with a luminous and highly absorbed X-ray binary system. Since the X-ray luminosity is too large for a solitary star, our interpretation is that of an early-type long-period binary with strong colliding winds emission. This naturally explains the observed X-ray spectrum and count rate as well as its lack of significant short term variability. Due to the short lifetime of any nebula 0.2pc from the putative central super-massive black-hole, we argue that the primary of IRS 13E has exited the LBV phase in the last few thousand years.

Abstract Copyright:

Journal keyword(s): X-rays: stars - stars: Wolf-Rayet - stars: individual: IRS 13E

Simbad objects: 9

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Number of rows : 9
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 NAME Sgr A Region reg 17 45 12 -28 48.3           ~ 939 0
2 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 14417 0
3 GCIRS 13E Cl* 17 45 39.73 -29 00 29.7           WN9 118 0
4 GCIRS 13W * 17 45 39.78 -29 00 30.5           M0III 21 0
5 GCIRS 13E2 WR* 17 45 39.8006 -29 00 29.819           WN8 48 0
6 GCIRS 13E3 ** 17 45 39.8038 -29 00 29.627           ~ 34 1
7 GCIRS 13E1 s*b 17 45 39.8166 -29 00 29.730           B0/1I 37 0
8 WR 102ae WR* 17 45 50.28 -28 49 11.4           WN9h 36 0
9 EM* AS 431 WR* 20 36 43.6322747712 +40 21 07.442607924     13.73 12.51   WN8(h)+B0.5V 220 0

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