Beta Pictoris 气体盘的可能光谱线
天体物理学
2007-05-23 v1
摘要
We present the results of exploratory HST observations to detect the emission lines of ions in the Beta Pic disk with the spectrograph slit placed off the star. Possible emission lines from FeII have been detected at erg cm-2 s-1 at 0.5 arcsec from Beta Pic, which would suggest a total FeII density of > 2. cm-3 at 10 AU. This detection needs confirmation. If real, it requires a large production rate of gas and dust equivalent to the total disruption of ten bodies 30 kilometers in radius per year.
关键词
引用
@article{arxiv.astro-ph/9908266,
title = {Possible spectral lines from the gaseous Beta Pictoris disk},
author = {A. Lecavelier des Etangs and L. M. Hobbs and A. Vidal-Madjar and H. Beust and P. D. Feldman and R. Ferlet and A. -M. Lagrange and W. Moos and M. McGrath},
journal= {arXiv preprint arXiv:astro-ph/9908266},
year = {2007}
}
备注
Research Note, submitted to Astronomy & Astrophysics, 4 figures, 4 pages