Detecting Faint Echoes in Stellar Flare Lightcurves
Abstract
Observational considerations are discussed for detecting echoes from flare star photospheres and from stellar or planetary companions. Synethetic spectra are used to determine optimal conditions for the recovery of echoes in flare lightcurves. The most detectable echoes are expected to appear in broadband observations of the UV continuum. Short-livedflares are ideal for resolving echoes from the flare star photosphere and may provide constraints for stellar flare models. Strong outbursts may be used to detect stellar or planetary companions of a flare star. However, the possible planetary configurations that may be probed by this method are limited to Jupiter-size objects in tight orbits (</= 0.1 AU) about the parent star. (SECTION: Stars)
- Publication:
-
Publications of the Astronomical Society of the Pacific
- Pub Date:
- November 1992
- DOI:
- 10.1086/133089
- Bibcode:
- 1992PASP..104.1049B
- Keywords:
-
- Flare Stars;
- Light Curve;
- Photosphere;
- Stellar Models;
- Stellar Spectra;
- Ultraviolet Astronomy;
- Astrophysics;
- STARS: FLARE;
- CIRCUMSTELLAR MATTER