RCB VARIABLES .7. INFRARED VARIABILITY OF RY SGR

被引：14

作者：

FEAST, MW ^{[1
]}

CATCHPOLE, RM ^{[1
]}

EVANS, TL ^{[1
]}

ROBERTSON, BSC ^{[1
]}

DEAN, JF ^{[1
]}

BYWATER, RA ^{[1
]}

机构：

[1] S AFRICAN ASTRON OBSERV,CAPE TOWN,SOUTH AFRICA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1977年 / 178卷 / 02期

关键词：

Dust - Light sources;

D O I：

10.1093/mnras/178.3.415

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

J, H, K, L(1.2-3.5μ) and B, V, RC, Ic photometry of the pulsating RCB star RY Sgr in 1975 are reported. A few radial velocities are also included. The infrared excess varies in the pulsation period of the visible star. This indicates that the infrared source derives its energy from this star, (presumably because it is a dust shell around the star). There is no need to postulate the presence of an infrared companion star. The 1100-day periodicity in the infrared excess of R CrB itself may be due to a natural pulsation of the circumstellar dust shell. © Royal Astronomical Society.

引用

页码：415 / 421

页数：7

共 14 条

[1] SPECTROSCOPIC AND PHOTOMETRIC STUDY OF PULSATING R CORONAE BOREALIS TYPE VARIABLE, RY SAGITTARII [J].