TESTING MASS LOSS IN LARGE MAGELLANIC CLOUD CEPHEIDS USING INFRARED AND OPTICAL OBSERVATIONS. II. PREDICTIONS AND TESTS OF THE OGLE-III FUNDAMENTAL-MODE CEPHEIDS

NCU Institutional Repository > 理學院 > 天文研究所 > 期刊論文 > Item 987654321/50786

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/50786

题名:	TESTING MASS LOSS IN LARGE MAGELLANIC CLOUD CEPHEIDS USING INFRARED AND OPTICAL OBSERVATIONS. II. PREDICTIONS AND TESTS OF THE OGLE-III FUNDAMENTAL-MODE CEPHEIDS
作者:	Neilson,HR;Ngeow,CC;Kanbur,SM;Lester,JB
贡献者:	天文研究所
关键词:	PERIOD-LUMINOSITY RELATIONS;GRAVITATIONAL LENSING EXPERIMENT;HIGH-RESOLUTION SPECTROSCOPY;AMPLITUDE-COLOR RELATIONS;HUBBLE-SPACE-TELESCOPE;CLASSICAL CEPHEIDS;GALACTIC CEPHEIDS;EXTENDED ENVELOPES;RADIUS RELATION;RS-PUPPIS
日期:	2010
上传时间:	2012-03-27 18:10:09 (UTC+8)
出版者:	國立中央大學
摘要:	In this paper, we test the hypothesis that Cepheids have infrared excesses due to mass loss. We fit a model using the mass-loss rate and the stellar radius as free parameters to optical observations from the OGLE-III survey and infrared observations from the Two Micron All Sky Survey and SAGE data sets. The sample of Cepheids has predicted minimum mass-loss rates ranging from 0 to 10(-8)M(circle dot) yr(-1), where the rates depend on the chosen dust properties. We use the predicted radii to compute the period-radius relation for LMC Cepheids and to estimate the uncertainty caused by the presence of infrared excess for determining angular diameters with the infrared surface brightness technique. Finally, we calculate the linear and nonlinear period-luminosity (P-L) relations for the LMC Cepheids at VIJHK + IRAC wavelengths and find that the P-L relations are consistent with being nonlinear at infrared wavelengths contrary to previous results.
關聯:	ASTROPHYSICAL JOURNAL
显示于类别:	[天文研究所] 期刊論文

文件中的档案:

档案	描述	大小	格式	浏览次数
index.html		0Kb	HTML	363	检视/开启

在NCUIR中所有的数据项都受到原著作权保护.

社群 sharing

数据加载中.....