X-ray Properties of Young Stars and Stellar Clusters
| dc.creator | Feigelson, Eric | |
| dc.creator | Townsley, Leisa | |
| dc.creator | Gudel, Manuel | |
| dc.creator | Stassun, Keivan | |
| dc.date | 2006-02-27 | |
| dc.date.accessioned | 2026-07-07T07:00:54Z | |
| dc.date.available | 2026-07-07T07:00:54Z | |
| dc.description | Although the environments of star and planet formation are thermodynamically cold, substantial X-ray emission from 10-100 MK plasmas is present. In low mass pre-main sequence stars, X-rays are produced by violent magnetic reconnection flares. In high mass O stars, they are produced by wind shocks on both stellar and parsec scales. The recent Chandra Orion Ultradeep Project, XMM-Newton Extended Survey of Taurus, and Chandra studies of more distant high-mass star forming regions reveal a wealth of X-ray phenomenology and astrophysics. X-ray flares mostly resemble solar-like magnetic activity from multipolar surface fields, although extreme flares may arise in field lines extending to the protoplanetary disk. Accretion plays a secondary role. Fluorescent iron line emission and absorption in inclined disks demonstrate that X-rays can efficiently illuminate disk material. The consequent ionization of disk gas and irradiation of disk solids addresses a variety of important astrophysical issues of disk dynamics, planet formation, and meteoritics. New observations of massive star forming environments such as M 17, the Carina Nebula and 30 Doradus show remarkably complex X-ray morphologies including the low-mass stellar population, diffuse X-ray flows from blister HII regions, and inhomogeneous superbubbles. X-ray astronomy is thus providing qualitatively new insights into star and planet formation. | |
| dc.description | 18 pages, 7 figures and 4 color plates. A review article to appear in Protostars & Planets V (eds. Reipurth et al., Univ. Arizona Press). A PDF version with high-quality figures can be found at http://www.astro.psu.edu/users/edf/feig_PPV.pdf | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0602603 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0602603 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/108118 | |
| dc.subject | Astrophysics | |
| dc.title | X-ray Properties of Young Stars and Stellar Clusters | |
| dc.type | text |