Theta Tucanae: a binary with a delta Scuti primary

Details Theta Tucanae: a binary with a delta Scuti primary Theta Tucanae: a binary with a delta Scuti primary

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...336..527d&link_type=abstract

Astronomy and Astrophysics, v.336, p.527-534 (1998)

Astronomy and Astrophysics

Astrophysics

20

Stars: Binaries: Spectroscopic, Stars: Individual: Theta Tuc, Stars: Oscillations, Stars: Variables: Delta Sct

Scientific paper

Using seven four-hour time series of high-resolution spectra, the binary nature and the oscillations of theta Tuc are investigated. The spectrum is double-lined, proving the binarity. theta Tuc is a binary with a circular orbit and with an anomalous mass ratio q=0.09. The for the first time determined orbital elements are P=7.1036 days, K1=8.6 km/s and K2=95.6 km/s. The oscillations of the delta Scuti-type main component are spectroscopically investigated. Line-profile variations are discovered, and radial-velocity variations reveal a main oscillation frequency of f1=20.27 c/d which corresponds to the main oscillation 20.2806 c/d in photometry. Another frequency, f2=18.82 c/d found in the spectroscopic data and not present in the photometric dataset, needs to be investigated more profoundly. Based on observations collected at the European Southern Observatory, La Silla, Chile. (Observing proposals 57 E-0269 and 58 D-0150)

Affiliated with

Also associated with

No associations

Rating

Theta Tucanae: a binary with a delta Scuti primary 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 Theta Tucanae: a binary with a delta Scuti primary, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Theta Tucanae: a binary with a delta Scuti primary will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1574084