EXTENDED NON-THERMAL EMISSION POSSIBLY ASSOCIATED WITH CYG OB2 #5

被引：0

作者：

Ortiz-Leon, Gisela N. ^{[1
]}

Rodriguez, Luis F. ^{[1
,2
]}

Tapia, Mauricio ^{[3
]}

机构：

[1] Univ Nacl Autonoma Mexico, Ctr Radioastron & Astrofis, Morelia 58089, Michoacan, Mexico

[2] King Abdulaziz Univ, Fac Sci, Dept Astron, Jeddah, Saudi Arabia

[3] Univ Nacl Autonoma Mexico, Inst Astron, Ensenada, Baja California, Mexico

来源：

REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA | 2012年 / 48卷 / 01期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

radio continuum: stars; stars: individual (Cyg OB2 #5); EARLY-TYPE STARS; CYG-OB2; NO; 5; RADIO-EMISSION; PARTICLE-ACCELERATION; VLA OBSERVATIONS; MODELS; RAY; POPULATION; COMPANION; COMPONENT;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Cyg OB2 #5 is a contact binary system (O6.5-7+O5.5-6) with associated radio continuum emission. Two compact (<= 0.'' 3) radio continuum components have been reported previously: the primary is associated with the contact binary and the secondary is an arc-like source to the NE of the primary. This arc-like source results from the interaction of the winds of the contact binary and a B-type star in the region. In this paper we report the detection of an extended (similar to 30 ''), non-thermal component to the NE of the compact components. We propose that this extended emission could be an unresolved background source (i.e. a radio galaxy), extended galactic emission, or non-thermal emission related to the relativistic electrons that are produced in the shock between the contact binary and the B-type star and that are carried away to large distances by the wind from the contact binary.

引用

页码：85 / 93

页数：9

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