Connecting Young Stellar Object Variability Across the Great Observatories: A Combined Spitzer and Chandra Study of Variability in IC 348

Details Connecting Young Stellar Object Variability Across the Great Observatories: A Combined Spitzer and Chandra Study of Variability in IC 348 Connecting Young Stellar Object Variability Across the Great Observatories: A Combined Spitzer and Chandra Study of Variability in IC 348

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011sptz.prop80174f&link_type=abstract

Spitzer Proposal ID #80174

Computer Science

Scientific paper

While most of our knowledge of circumstellar disks is based on single snapshots of many systems, their evolution is in fact highly dynamic on short timescales. We propose to monitor a cluster of young stars at 3.6 and 4.5 micron with Spitzer, as well as in the X-ray with Chandra, in order to trace infrared variability on timescales of months to years as well as connect it with known sources of X-ray variability. Previous observations have found that many young stellar objects fluctuate in as little as a few days. Possible sources of this variability include variable heating by X-ray, accretion or stellar flux, dynamical interactions with the stellar magnetic field or perturbations from a possibly planetary-mass companion embedded in the disk. Coordinated Spitzer and Chandra observations, along with supporting data tracing the accretion and stellar flux, will be able to put strong constraints on the source of the variability and study the importance of X-rays in setting the disk structure. This type of multi-wavelength multi-epoch campaign has not been performed in the past and has the potential to greatly advance our understanding of young stellar object evolution.

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