LMC Papillon Nebula相关的星族群
摘要
We study the Large Magellanic Cloud Papillon Nebula (N159-5), a conspicuous High Excitation Blob (HEB) lying in the star forming complex N159. Using JHK near-infrared photometry obtained at the ESO VLT with the ISAAC camera, we examine the stellar populations associated with the Papillon, tracing their history using stellar evolution models. Two populations are revealed: one composed of young, massive stars with an age ~ 3 Myr, and a second consisting of older lower mass stars of age spreading between 1 and 10 Gyr. We analyze the properties of those populations and discuss their significance in the context of N159. We also estimate that if the star at the center of the Papillon is single its initial mass is ~ 50 solar masses and it is affected by an extinction Av ~ 7 mag.
关键词
引用
@article{arxiv.astro-ph/0403625,
title = {Fine-tuning the accretion disk clock in Hercules X-1},
author = {M. Still and P. Boyd},
journal= {arXiv preprint arXiv:astro-ph/0403625},
year = {2009}
}
备注
9 pages, 4 figures, ApJL in press