Evidence of large-scale structures in the atmosphere of the active K-dwarf component of V471 Tauri

Details Evidence of large-scale structures in the atmosphere of the active K-dwarf component of V471 Tauri Evidence of large-scale structures in the atmosphere of the active K-dwarf component of V471 Tauri

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.263..197g&link_type=abstract

In ESA Proceedings of an International Symposium on New Insights in Astrophysics. Eight Years of UV Astronomy with IUE p 197-20

Astronomy and Astrophysics

Astrophysics

27

Eclipsing Binary Stars, K Stars, Stellar Atmospheres, Stellar Structure, Iue, Starspots, Stellar Spectra, Ultraviolet Spectroscopy

Scientific paper

The authors have analyzed contemporaneous IUE ultraviolet spectra and visible photoelectric data of the eclipsing binary V471 Tauri (K2 V+DA) between 1979 and 1985. The combined data detail the three-dimensional structure of atmospheric loops and their associated starspots on the K dwarf. The distribution of starspot regions on the surface of the K star has been inferred from the visible photometry. When spots are located near the limb of the K dwarf prior to and shortly after the total eclipse of the white dwarf, absorption lines such as C II, C III, C IV, and Si IV appear superimposed on the continuum of the white dwarf. These absorption lines are likely caused by "cool coronal loops" overlying the spots in the atmosphere of the K dwarf. Occasionally, the loops can extend nearly one stellar radius above the surface of the K2 V star.

Affiliated with

Also associated with

No associations

Rating

Evidence of large-scale structures in the atmosphere of the active K-dwarf component of V471 Tauri does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Evidence of large-scale structures in the atmosphere of the active K-dwarf component of V471 Tauri, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evidence of large-scale structures in the atmosphere of the active K-dwarf component of V471 Tauri will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1294747