Investigation of micro-flaring and secular and quasi-periodic variations in dMe flare stars. IV - Harmonic analysis of YZ Canis Minoris and a possible connection with the Ionson-Mullan hypothesis of coronal heating

Details Investigation of micro-flaring and secular and quasi-periodic variations in dMe flare stars. IV - Harmonic analysis of YZ Canis Minoris and a possible connection with the Ionson-Mullan hypothesis of coronal heating Investigation of micro-flaring and secular and quasi-periodic variations in dMe flare stars. IV - Harmonic analysis of YZ Canis Minoris and a possible connection with the Ionson-Mullan hypothesis of coronal heating

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...229..504a&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 229, no. 2, March 1990, p. 504-512. Research supported by the Department of Ed

Astronomy and Astrophysics

Astrophysics

9

Flare Stars, Periodic Variations, Secular Variations, Stellar Atmospheres, Stellar Coronas, Stellar Flares, Astronomical Photometry, Late Stars, Solar Neighborhood, Stellar Activity, Stellar Atmospheres, Stellar Coronae, Dme Flare Stars, Surface Activity, Asteroseismology, Stellar Photometry, Stars: V1285 Aql, V645 Cen, Uv Cet, Yz Cmi, Ev Lac, At Mic, V1054 Oph, V468 Tau

Scientific paper

Periodograms of U-band photometric data have been examined to search for "time signatures" in YZ Canis Minoris down to periods of about 6 seconds. Quasi-periods are found at 7.1, 15.4, 33.2 and 92.9 s. From harmonic analysis the fundamental frequencies, 46.3 mHz (21.6s period) and 35.8 mHz (27.9 s) and 10.8 mHz (92.9 s), and several overtones and found. The 7.1-s "time signature" appears to be superposed overtones of these fundamentals. The 15.4-s "time signature" is very close to the 5th overtone of 10.8 mHz. Similarities with other dM4.5e stars, e.g. AT Microscopii (with "time signatures" 13.2 and 7.9 s), may be explicable in terms of a few such close fundamental frequencies. These fundamental frequencies and their overtones may have a bearing on the Ionson-Mullan hypothesis that coronal-heating is coupled to convective motion in late-type stars, and they are important new parameters possibly related to the flaring mechanism.

Affiliated with

Also associated with

No associations

Rating

Investigation of micro-flaring and secular and quasi-periodic variations in dMe flare stars. IV - Harmonic analysis of YZ Canis Minoris and a possible connection with the Ionson-Mullan hypothesis of coronal heating 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 Investigation of micro-flaring and secular and quasi-periodic variations in dMe flare stars. IV - Harmonic analysis of YZ Canis Minoris and a possible connection with the Ionson-Mullan hypothesis of coronal heating, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Investigation of micro-flaring and secular and quasi-periodic variations in dMe flare stars. IV - Harmonic analysis of YZ Canis Minoris and a possible connection with the Ionson-Mullan hypothesis of coronal heating will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1884810