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