1997A&A...321..477B


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.19CEST18:33:29

1997A&A...321..477B - Astronomy and Astrophysics, volume 321, 477-484 (1997/5-2)

Spectroscopic study of GRO J1655-40: the outburst and the decline.

BIANCHINI A., DELLA VALLE M., MASETTI N. and MARGONI R.

Abstract (from CDS):

We have analysed 53 optical spectra (40 taken during the outburst peak and 13 during the decline) of the Soft X-ray Transient GRO J1655-40 (=X-Ray Nova Scorpii 1994). The Hα flux during outburst shows a periodicity of 1.3-days, which is almost exactly one half of the one obtained by Bailyn et al. (1995b) from radial velocity variations. A possible explanation for this behaviour is provided. We also notice that the spectral emission features shrink or turn into absorption lines with an emission core during the decline. This is typical of Soft X-ray Transients and suggests that an expansion of the disk takes place after the outburst peak phase.

Abstract Copyright:

Journal keyword(s): accretion disks - stars: individual (GRO J1655-40 = X-ray Nova Sco 1994) - X-rays: stars

Simbad objects: 8

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Number of rows : 8

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 CD-34 239 PM* 00 41 30.4742099792 -33 37 32.032402561 13.138 11.969 10.525 9.619 8.741 K9V 95 0
2 V* V518 Per HXB 04 21 42.7231318463 +32 54 26.936934166 13.00 13.50 13.2     M4.5V 623 1
3 V* MM Vel HXB 10 13 36.4107940553 -45 04 32.555813596   14.84 14.71     G5V-M0V 185 0
4 V* V1033 Sco HXB 16 54 00.137 -39 50 44.90   15.20 14.2 16.14   F5IV 1719 1
5 V* V2293 Oph LXB 17 19 36.930 -25 01 03.43   17.55 16.65     ~ 149 0
6 CD-44 12736 PM* 18 36 25.9487430436 -44 18 36.919462094   10.83 10.22     G0 195 0
7 V* V404 Cyg HXB 20 24 03.820 +33 52 01.90 14.50 14.20 12.7     K0IV 1102 0
8 LP 877-23 PM* 22 52 41.0353308036 -20 35 32.995847106   13.02 11.90     ~ 104 0

    Equat.    Gal    SGal    Ecl

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2020.10.19-18:33:29

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