The period structure and stability of the pulsating white dwarf L19-2

Details The period structure and stability of the pulsating white dwarf L19-2 The period structure and stability of the pulsating white dwarf L19-2

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.228..949o&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 228, Oct. 15, 1987, p. 949-955. Research supported by t

Astronomy and Astrophysics

Astronomy

27

Stellar Oscillations, Stellar Spectrophotometry, Stellar Structure, White Dwarf Stars

Scientific paper

Observations made in 1983 - 85 confirm the earlier detection of a slight inequality in the splitting of the frequency triplet near 192 s of the pulsating DA white dwarf L 19-2. If interpreted as second-order splitting of rotationally-perturbed non-radial g-mode pulsations, the measured value, 2.0×10-6mHz, is in rough agreement with outdated theoretical calculations which should be repeated with more realistic white dwarf models. The new observations are also used to set an upper limit of 3.0×10-14s s-1 on the rate of period change of the 192 s oscillation corresponding to an evolutionary cooling time-scale longer than 2.0×108yr.

Affiliated with

Also associated with

No associations

Rating

The period structure and stability of the pulsating white dwarf L19-2 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 The period structure and stability of the pulsating white dwarf L19-2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The period structure and stability of the pulsating white dwarf L19-2 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1776148