AAS 206th Meeting, 29 May - 2 June 2005
Session 8 Circumstellar Shells and Disks
Poster, Monday, 9:20am-6:30pm, Tuesday, 10:00am-7:00pm, May 30, 2005, Ballroom A

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[8.10] Rotation, Disks, and X-Rays in the Orion Flanking Fields and NGC 2264

L. M. Rebull (SSC), S. V. Ramirez (IPAC), J. R. Stauffer (SSC), E. Flaccomio, S. Sciortino, G. Micela (INAF/Palermo)

Low-mass pre-main-sequence stars are often strong X-ray emitters. There is a clear relationship between rotation and X-ray activity in older low-mass stars, but exactly when this relationship is established is unclear. Most if not all young low-mass stars form with circumstellar disks. Despite the logical suggestion that circumstellar matter should influence X-ray flux from young stars, there is mixed evidence in the literature of any correlation between circumstellar disks and X-rays. We have obtained Chandra X-ray data of two fields in the Orion Flanking Fields (~3 Myr) and two fields in NGC 2264 (~5 Myr). In this poster, we examine whether or not there is any correlations between disks, rotation, and X-rays in these young clusters.

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Bulletin of the American Astronomical Society, 37 #2
© 2005. The American Astronomical Soceity.