Polarimetric observations of HD 199178 - an FK Comae type star

Details Polarimetric observations of HD 199178 - an FK Comae type star Polarimetric observations of HD 199178 - an FK Comae type star

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...110..351p&link_type=abstract

Astronomy and Astrophysics, vol. 110, no. 2, June 1982, p. 351-354.

Astronomy and Astrophysics

Astrophysics

10

Linear Polarization, Polarimetry, Stellar Spectrophotometry, Variable Stars, Chromosphere, H Alpha Line, Periodic Variations, Rayleigh Scattering, Southern Hemisphere, Stellar Magnetic Fields, Stellar Rotation, Ubv Spectra, Zeeman Effect

Scientific paper

Linear polarization observations (UBVRI) of HD 199178, a star of the FK Com type, are reported. The polarization shows a dependence of roughly gamma to to -4 and is variable, with a periodicity of 4 d. Magnetic active regions (spots or faculae) asymmetrically distributed along the longitude, are seen as the probable cause of the polarization (Rayleigh scattering and/or saturation in the transverse Zeeman effect) varying with the stellar rotation period. The polarization in the R and V bands is found to be larger than expected. It is thought that the intrisinic linear polarization observed in HD 199178 probably derives from chromospheric activity.

Affiliated with

Also associated with

No associations

Rating

Polarimetric observations of HD 199178 - an FK Comae type star 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 Polarimetric observations of HD 199178 - an FK Comae type star, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polarimetric observations of HD 199178 - an FK Comae type star will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1351058