Starspot cycles from long-term photometry

Details Starspot cycles from long-term photometry Starspot cycles from long-term photometry

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002an....323..361o&link_type=abstract

Astronomische Nachrichten, vol. 323, no. 3/4, p. 361-366

Astronomy and Astrophysics

Astronomy

23

Stars: Spots, Stars: Activity, Stars: Cycles

Scientific paper

We continue investigating the photometric cycle lengths of some active stars. Using datasets now up to 34 years long we confirm previously derived activity cycles for the shorter period systems of our sample (LQ Hya, V833 Tau, EI Eri, V711 Tau, HU Vir and IL Hya), but find different cycle lengths for the two long-period giants HK Lac and IM Peg. We add UZ Lib to our previous sample. The connection between the rotational period and cycle length seems evident for the shortest derived cycle lengths. A similar connection between the rotational period and the longer cycle lengths is not as clear, taking into account recent results on the time variability of the longer term solar cycles. While the time base of the observations puts an upper limit to the detectable lengths of the longer cycles, a general dependence of the cycle period on the rotation rate is maintained. The length of the shortest cycle that we found for LQ Hya agrees with the cycle period derived from dynamo modelling of this star.

Affiliated with

Also associated with

No associations

Rating

Starspot cycles from long-term photometry 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 Starspot cycles from long-term photometry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Starspot cycles from long-term photometry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-960034