Two extreme examples of compact pulsators - PG 1115+1158 and PG 1351+489

Details Two extreme examples of compact pulsators - PG 1115+1158 and PG 1351+489 Two extreme examples of compact pulsators - PG 1115+1158 and PG 1351+489

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...316..305w&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 316, May 1, 1987, p. 305-310. Research supported by McDonald Observatory.

Other

35

Helium, Light Curve, Stellar Oscillations, White Dwarf Stars, Periodic Variations, Stellar Atmospheres, Stellar Spectrophotometry

Scientific paper

The authors have discovered pulsations in the helium atmosphere (DB) white dwarfs PG 1115+158 and PG 1351+489 of a character unlike those seen before in any compact pulsators. The peak-to-peak amplitudes of the light curve variations, 0.11 mag for PG 1115+158 and 0.16 mag for PG 1351+489, are similar to those found in the two other known DB pulsators. The light curves of PG 1115+158 show a complex range of periods with evidence for periods which are the longest ever observed in a pulsating white dwarf. In contrast, PG 1351+489 has the simplest light curve of any known variable white dwarf: it is dominated by a single period, 489.5 s and its harmonics. Unlike similar pulsators, essentially all of the observed modulation is confined to this single period.

Affiliated with

Also associated with

No associations

Rating

Two extreme examples of compact pulsators - PG 1115+1158 and PG 1351+489 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 Two extreme examples of compact pulsators - PG 1115+1158 and PG 1351+489, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two extreme examples of compact pulsators - PG 1115+1158 and PG 1351+489 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-856951