Results and Perspectives of Young Stellar Object long look programs

Details Results and Perspectives of Young Stellar Object long look programs Results and Perspectives of Young Stellar Object long look programs

2007-12-03

arxiv.org/abs/0712.0281v1

Astronomy and Astrophysics

Astrophysics

Proceedings of the "XMM-Newton: the next decade", to appear in Astronomische Nachrichten (4 pages and 5 figures)

Scientific paper

10.1002/asna.200710916

Both Chandra and XMM-Newton have performed long look programs for studying the YSO physics. I will discuss recent results on the controversial issue of Class 0 YSO X-ray emission, the observational evidence of magnetic funnels interconnecting the YSO with its circumstellar disk and the Fe 6.4 keV fluorescent line emission and its origin. While recent results of the XMM-Newton DROXO program challenge the ''standard'' interpretation of the Fe 6.4 line origin as due to photoionized fluorescing disk material, the discovery of X-ray excited Ne 12.81 micron line is a clear evidence of the interaction between X-rays and disk material. Future long look observations with XMM-Newton are required to clarify the X-ray effects on YSO disk.

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