AAS 197, January 2001
Session 10. Low Mass Star Formation
Display, Monday, January 8, 2001, 9:30am-7:00pm, Exhibit Hall

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[10.12] Optical Photometric Monitoring of HH30 IRS

K. Wood, K.Z. Stanek, S. Wolk (CfA), B. Whitney (SSI), K. Stassun (Wisconsin)

Recently we presented results of a VRI photometric monitoring campaign on the classical T Tauri star HH30 IRS. We found that HH30 IRS is highly variable by up to 1.5mags over timescales of a few days. The short timescale of the variability suggests changes are ocurring close to the star, possibly rotational modulation due to hot spots on the stellar surface or shadowing by inhomogeneities in the inner accretion disk. We will presnt new photometry from our continued monitoring of HH30 IRS and discuss this in the context of different variability models.

This work is supported by HST archival grant AR-08367.01-97A; NASA grants NAG5 6039, NAG5 8412; NSF grant AST 9909966; and Hubble Fellowship grant HF-01124.01-99A.

The author(s) of this abstract have provided an email address for comments about the abstract: kenny@claymore.harvard.edu

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