Additional UBVRI and JHKL photometry of T Tauri stars in the Taurus region

Details Additional UBVRI and JHKL photometry of T Tauri stars in the Taurus region Additional UBVRI and JHKL photometry of T Tauri stars in the Taurus region

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983aj.....88.1017r&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 88, July 1983, p. 1017-1026.

Astronomy and Astrophysics

Astronomy

67

Stellar Color, Stellar Envelopes, Stellar Spectrophotometry, T Tauri Stars, Taurus Constellation, Chromosphere, Infrared Stars, Interstellar Extinction, Orion Constellation, Stellar Magnitude, Stellar Temperature, Ubv Spectra

Scientific paper

We present nearly simultaneous UB VRI and JHKL photometry for 21 T Tauri stars in the Taurus region and three stars in northern Orion. Some nonsimultaneous UBVRJ and JHKL photometry of T Tauri stars in the Taurus and NGC 2264 regions is also given. These new data reinforce the conclusion from Rydgren, Schmelz, and Vrba (1982) that the T Tauri loci in the (J - H, H - K) and (H - K, K - L) diagrams are relatively narrow, implying a limited range in maximum temperature for the associated circumstellar dust. From an analysis of the available data for five actively variable T Tauri stars we find that (1) the slopes d (B - V )/d V and d (V - I)/dV differ significantly between stars, (2) the j - H, H - K, and K - L colors tend to become larger when the star is fainter at V, and (3) the amplitude of variations at L is much smaller than the amplitude at V. The resulting constraints on models for T Tauri variability are considered.

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