Terrestrial Zone Debris Disk Candidates in h and chi Persei
Astrophysics
2007-06-28 v2
Abstract
We analyze 8 sources with strong mid-infrared excesses in the 13 Myr-old double cluster h and chi Persei. New optical spectra and broadband SEDs (0.36-8 mu_m) are consistent with cluster membership. We show that material with T ~ 300-400 K and Ld/Lstar ~ 10^-4-10^-3 produces the excesses in these sources. Optically-thick blackbody disk models - including those with large inner holes - do not match the observed SEDs. The SEDs of optically-thin debris disks produced from terrestrial planet formation calculations match the observations well. Thus, some h and chi Persei stars may have debris from terrestrial zone planet formation.
Cite
@article{arxiv.0706.0535,
title = {Terrestrial Zone Debris Disk Candidates in h and chi Persei},
author = {Thayne Currie and Scott J. Kenyon and George Rieke and Zoltan Balog and Benjamin C. Bromley},
journal= {arXiv preprint arXiv:0706.0535},
year = {2007}
}