Simultaneous Spitzer/Chandra Observation Of Young Stellar Objects In GGD 12-15 - Do X-ray Flares Produce Disk Afterglows?

Type Conference Paper
Names Jan Forbrich, K. R. Covey, S. J. Wolk, J. R. Stauffer, R. R. A. Gutermuth, M. Morales Calderon, B. A. Whitney, J. L. Hora, B. Posselt
Proceedings Title Bulletin of the American Astronomical Society
Conference Name American Astronomical Society, AAS Meeting #218, #226.09
Volume 43
Date May 1, 2011
Library Catalog NASA ADS
Abstract We present first results of a simultaneous 20h Spitzer/Chandra monitoring campaign of the young cluster GGD 12-15. By analyzing correlated X-ray and mid-IR variability on different timescales, we are testing 1) theoretical predictions of X-ray heating in circumstellar disks (in an analogy to reverberation mapping), and 2) whether disk accretion rates rise following stellar X-ray flares, as expected from disk accretion models. Focusing on simultaneous X-ray and mid-infrared observations and timescales of minutes to hours, this project is leveraging extensive mid-IR light curves obtained via the Spitzer Warm Mission program YSOVAR. Ancillary science includes the identification of weak-line T Tauri stars to study their mid-IR variability and the LX-rotation relation of protostars, using mid-IR periods.
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