Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a...104..260r&link_type=abstract
Astronomy and Astrophysics, vol. 104, no. 2, Dec. 1981, p. 260-263. Research supported by the University of Toledo.
Astronomy and Astrophysics
Astrophysics
32
Giant Stars, Light Curve, Stellar Spectrophotometry, Ubv Spectra, Brightness, Colorimetry, Stellar Temperature, Variable Stars
Scientific paper
The light curves in five Johnson photometry colors are given. The period of photometric variability (2.400d) is confirmed, although some systematic drifts of the light curves that are noticeable in less than three weeks also seem to be present. The flare activity is found to increase the noise of the light curves, especially at shorter wavelengths. It is noted that the light variation of about 0.08 in V can be explained by a longitudinally asymmetric region of dark spots covering no less than 10% of the hemisphere; here, the temperature difference relative to the photosphere is of the order of 500-800 K. The variations of individual colors, however, are not consistent with a unique value of that difference. The V-R and R-I colors at maximum suggest an effective temperature of about 4900 K, which agrees with the low-temperature end in the range of existing spectral classifications.
No associations
LandOfFree
UBVRI photometry of FK Comae 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 UBVRI photometry of FK Comae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and UBVRI photometry of FK Comae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1259552