Optical Photometric Monitoring of HH30 IRS

Details Optical Photometric Monitoring of HH30 IRS Optical Photometric Monitoring of HH30 IRS

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...197.1012w&link_type=abstract

American Astronomical Society, 197th AAS Meeting, #10.12; Bulletin of the American Astronomical Society, Vol. 32, p.1414

Astronomy and Astrophysics

Astronomy

2

Scientific paper

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.

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