Multifrequency monitoring of the pre-main-sequence star RU LUPI

Details Multifrequency monitoring of the pre-main-sequence star RU LUPI Multifrequency monitoring of the pre-main-sequence star RU LUPI

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.169...55g&link_type=abstract

(IAU, European Regional Astronomy Meeting on New Windows to the Universe, 11th, La Laguna, Spain, July 3-8, 1989) Astrophysics a

Astronomy and Astrophysics

Astrophysics

4

Early Stars, Pre-Main Sequence Stars, Stellar Spectra, T Tauri Stars, Infrared Spectra, Iue, Spectral Energy Distribution, Stellar Envelopes, Ultraviolet Spectra, X Ray Spectra

Scientific paper

Within the framework of a five-year campaign of coordinated multifrequency observations of the T Tauri star RU Lupi, results obtained in X-ray, UV, optical, and IR spectral regions are presented. Data analysis shows a large variability at different wavelengths both in the continuum and lines, stronger in the UV and weaker in the IR. Correlations among variations in the UV and optical continua have been found. Moreover, flare-like events (FLEs), probably due to strong activity in the surface layers of the stars and burst phenomena on large scale, were detected. No forbidden coronal lines were detected in UV and optical regions with the IUE and ESO 1.4 m CAT telescope, respectively.

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