Orbital period study of the Algol-type eclipsing binary system TW Draconis

Details Orbital period study of the Algol-type eclipsing binary system TW Draconis Orbital period study of the Algol-type eclipsing binary system TW Draconis

Oct 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002newa....7..435q&link_type=abstract

New Astronomy, Volume 7, Issue 7, p. 435-439.

Astronomy and Astrophysics

Astronomy

11

Scientific paper

The century-long times of light minimum of the Algol-type eclipsing binary star, TW Dra (BD/+64°1077, SpA5V+K2III), are investigated by considering a new pattern of period change. Two sudden period increases and two successive period decreases are discovered to superimpose on a rapid secular increase (dP/dt=+4.43×10-6days/year). The secular increase may be caused by a dynamical mass transfer from the secondary to the primary component (dm/dt=6.81×10-7Msolar/year) that is in agreement with the semi-detached configuration of the system and with the existence of a hot spot and a gaseous stream in the binary system. The irregular period jumps superimposed on the secular increase can be explained by the structure variation of the K2-type giant via instabilities of the outer convective layer or via magnetic activity cycles.

Affiliated with

Also associated with

No associations

Rating

Orbital period study of the Algol-type eclipsing binary system TW Draconis 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 Orbital period study of the Algol-type eclipsing binary system TW Draconis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Orbital period study of the Algol-type eclipsing binary system TW Draconis will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1861718