Stempels, Eric

Contact Email: piskunov@astro.uu.se
Institute: Department of Astronomy and Space Physics
Uppsala University
First Coauthor: Nikolai Piskunov
Research URL:http://www.astro.uu.se
Presenting Thesis: Yes
Subject Area: Star Formation, Very Young Stars, T-Tauri, H-H Objects
Waveband: Optical
Technique: Spectroscopy
Presentation: Poster Display
Title: Probing magnetospheric infall onto CTTS with time-resolved veiling measurements
Abstract: We show that time-resolved veiling measurements over a large wavelength range can probe individual accretion events onto Classical T Tauri Stars. We demonstrate two methods of measuring veiling. Using these measurements, we model CTTS spectra as a superposition of two black-body spectra representing stellar and accretion emission. The simple but functional method allows us to estimate the temperature of the accretion shock and the relative surface area of the accretion regions on the star. We apply this method to a series of spectra of the CTTS RU Lupi and present our first results.