Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...304..728s&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 304, May 15, 1986, p. 728-738.
Astronomy and Astrophysics
Astrophysics
21
Astronomical Spectroscopy, B Stars, Stellar Oscillations, Variable Stars, Binary Stars, Ephemeris Time, Line Spectra, Silicon
Scientific paper
On three occasions the author has observed the Si III λλ4552 - 4574 line profiles in the typical B0.3 IV star δ Scorpii to vary over short time scales. The analysis of these variations suggests the presence of a total of six nonradial modes; no more than two are usually active at one time. These modes have short periods, large amplitudes, and are characterized by nonradial indices -m = l. Four of these modes seem to be members of a "commensurability" family. The physical pulsational amplitudes appear to be unequal from cycle to cycle. Some of the periods are "modulated" around a mean value. There is also a modulation pattern of periods which repeats during every superperiod (360° circuit of a wave around the star).
No associations
LandOfFree
Pulsation mode typing in line-profile variables. VII - Commensurable modes and nonuniform period behavior in Delta Scorpii 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 Pulsation mode typing in line-profile variables. VII - Commensurable modes and nonuniform period behavior in Delta Scorpii, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulsation mode typing in line-profile variables. VII - Commensurable modes and nonuniform period behavior in Delta Scorpii will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1773183