1997A&A...318...73S


Query : 1997A&A...318...73S

1997A&A...318...73S - Astronomy and Astrophysics, volume 318, 73-80 (1997/2-1)

Visual light from the eclipsing supersoft X-ray source CAL 87.

SCHANDL S., MEYER-HOFMEISTER E. and MEYER F.

Abstract (from CDS):

We calculate the visual light curve of CAL 87 based on the assumption that an accreting steadily burning white dwarf irradiates the accretion disk and the secondary star, as suggested by van den Heuvel et al. (1992A&A...262...97V). We find a reasonable fit including the following sources of visual light: 1. the secondary star where the energy from irradiation is spread out over the surface, 2. the accretion disk with an optically thick, cold, clumpy spray presumably caused by an accretion stream of high mass flow rate impinging on the disk (hot spot). This spray moving around the disk can account for the asymmetry in the light curve and the depth of the secondary minimum. This supports the assumption that the white dwarf is permanently hidden by the disk.

Abstract Copyright:

Journal keyword(s): accretion disks - binaries: eclipsing - stars: CAL 87 (LMC) - X-rays: stars

CDS comments: p.73 : RX J0019 = RX J0019.8+2156

Simbad objects: 5

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Number of rows : 5
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 V* QR And EB* 00 19 49.9252996176 +21 56 52.169584416   12.38 12.73 11.86   Ss 126 0
2 SV* HV 5682 XB* 05 13 50.809 -69 51 47.30     16.566 16.606 16.62 ~ 307 0
3 2E 1550 XB* 05 43 34.1600044704 -68 22 22.191505716   15.9   17.2 16.54 ~ 309 0
4 OGLE LMC-SC20 113500 EB* 05 46 46.54 -71 08 53.9     19.163   18.886 ~ 248 0
5 V* V691 CrA LXB 18 25 46.8185061768 -37 06 18.529336656 14.30 15.20 15.1     ~ 414 0

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2022.05.20-20:03:57

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