[O I] 6300 A Emission from Disks Around Herbig Ae/Be Stars
Abstract
We present high spectral-resolution optical spectra of 49 Herbig Ae/Be stars in a search for the [O I] 6300.2 A line. The vast majority of the stars in our sample show narrow (FWHM < 100 km/s) emission lines, centered on the stellar radial velocity. Some stars in our sample show double-peaked lines profiles, with peak-to-peak separations of about 10 km/s. The presence and strength of the [O I] line emission appears to be well correlated with the far-infrared energy distribution of each source: stars with a strong excess at 60 micron have in general stronger [O I] emission than stars with weaker 60 micron excesses. We interpret the observed [O I] 6300.2 A line profiles as arising in the surface layers of the protoplanetary disks surrounding Herbig Ae/Be stars.
Keywords
Cite
@article{arxiv.astro-ph/0408199,
title = {[O I] 6300 A Emission from Disks Around Herbig Ae/Be Stars},
author = {M. E. van den Ancker and B. Acke and C. P. Dullemond},
journal= {arXiv preprint arXiv:astro-ph/0408199},
year = {2007}
}
Comments
6 pages, 7 figures; to appear in on-line proceedings Second TPF/Darwin International Conference