两种EROS候选微镜星的光谱研究
天体物理学
2007-05-23 v1
摘要
为两种EROS微镜候选星获得了低分辨率光谱和UBVRI光度测量。径向速度表明，这两颗星都是大银河系漂移星系(LMC)的成员。EROS1的光谱和颜色揭示它是一颗 moderately reddened 的主序B星，伴有H发射线。H吸收线的存在似乎更像是正常星而非类星体变星。至于EROS2，第二颗候选星，其光谱和光度为一颗未被 reddening 的主序A星，但不能完全排除它们是否代表一次 nova 爆发前的状态。虽然尚不能排除固体变动的可能性，但以微镜效应解释仍是最自然的解释。
引用
@article{arxiv.astro-ph/9411051,
title = {Spectroscopic Studies of the Two Eros Candidate Microlensed Stars},
author = {J. P. Beaulieu and R. Ferlet and Ph. Grison and A. Vidal-Madjar and J. P. Kneib and E. Maurice and L. Prevot and C. Gry and J. Guibert and O. Moreau and F. Tajahmady and E. Aubourg and P. Bareyre and S. Brehin and M. Gros and M. Lachieze-Rey and B. Laurent and E. Lesquoy and C. Magneville and A. Milsztajn and L. Moscoso and F. Queinnec and J. Rich and M. Spiro and L. Vigroux and S. Zylberajch and R. Ansari and F. Cavalier and M. Moniez},
journal= {arXiv preprint arXiv:astro-ph/9411051},
year = {2007}
}
备注
5 pages, uuencoded compressed PS file, including 1 figure. submitted to Astronomy and Astrophysics, 28 July, 1994