Magnetic Activity in Low Mass Stars: SDSS Results

Details Magnetic Activity in Low Mass Stars: SDSS Results Magnetic Activity in Low Mass Stars: SDSS Results

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004iaus..219..935w&link_type=abstract

Stars as suns : activity, evolution and planets, Proceedings of the 219th symposium of the International Astronomical Union held

Astronomy and Astrophysics

Astronomy

Scientific paper

We present a study of the magnetic activity properties of low-mass stars in the Sloan Digital Sky Survey. Using the H-alpha emission line as an activity indicator we examine the fraction of active stars as a function of spectral type and find a peak near type M7 confirming previous results. However contrary to past findings we find that not all M7 stars are active. We investigate the ratio of the luminosity emitted in H-alpha compared to the bolometric luminosity for each star and find a roughly constant ratio (with large scatter) over the range M0-M7. There appears to be a slight decrease in this ratio for types M8-L0 in agreement with previous determinations. We also explore the effect of metallicity on activity and examine whether activity is correlated with changes in SDSS colors.

Affiliated with

Also associated with

No associations

Rating

Magnetic Activity in Low Mass Stars: SDSS Results 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 Magnetic Activity in Low Mass Stars: SDSS Results, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic Activity in Low Mass Stars: SDSS Results will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1546621