2006A&A...447L...1S


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.18CEST01:18:27

2006A&A...447L...1S - Astronomy and Astrophysics, volume 447, L1-4 (2006/2-4)

Assisted stellar suicide in V617 Sagittarii.

STEINER J.E., OLIVEIRA A.S., CIESLINSKI D. and RICCI T.V.

Abstract (from CDS):

V617 Sgr is a V Sagittae star - a group of binaries thought to be the galactic counterparts of the Compact Binary Supersoft X-ray Sources - CBSS. To check this hypothesis, we measured the time derivative of its orbital period. Observed timings of eclipse minima spanning over 30000 orbital cycles are presented. We found that the orbital period evolves quite rapidly: P/{dot}(P)=1.1x106-years. This is consistent with the idea that V617 Sgr is a wind driven accretion supersoft source. As the binary system evolves with a time-scale of about one million years, which is extremely short for a low mass evolved binary, it is likely that the system will soon end either by having its secondary completely evaporated or by the primary exploding as a supernova of type Ia.

Abstract Copyright:

Journal keyword(s): binaries: close - stars: winds, outflows - stars: individual: V617 Sgr - supernovae: general

Simbad objects: 7

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Number of rows : 7

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* QR And EB* 00 19 49.9252841335 +21 56 52.166609264   12.38 12.73 11.86   Ss 125 0
2 2E 0035.4-7229 XB* 00 37 19.0 -72 14 14   20.0 20.2     ~ 98 0
3 RX J0537.6-7033 XB* 05 37 43.0 -70 34 15           ~ 30 0
4 NOVA Pyx 1890 No* 09 04 41.5062068236 -32 22 47.503345173   7.0       ~ 389 1
5 RX J0925.7-4758 XB* 09 25 46.0017213799 -47 58 17.339989324   19.2       ~ 86 0
6 WR 109 WR* 18 07 50.8974693468 -35 10 25.119230585           WN3 51 0
7 V* V Sge CV* 20 20 14.6910210608 +21 06 10.437296116   11.27 11.22 11.54   Be 201 0

    Equat.    Gal    SGal    Ecl

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2021.04.18-01:18:27

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