The 1997/1998 eclipse of VV Cephei was late

Details The 1997/1998 eclipse of VV Cephei was late The 1997/1998 eclipse of VV Cephei was late

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...349..511l&link_type=abstract

Astronomy and Astrophysics, v.349, p.511-514 (1999)

Astronomy and Astrophysics

Astrophysics

4

Stars: Binaries: Eclipsing, Stars: Individual: Vv Cep, Stars: Supergiants

Scientific paper

The recent eclipse of the long-period (P=7430() d) binary star VV Cephei is studied by means of UBV photometry and optical spectroscopy. Both photometry and variations of the emission lines (Hα and FeII lambda 4233) show that the eclipse occured about 68 days later than predicted from the ephemeris. Such a sudden about 1% lengthening of the orbital period between the last two eclipses implies that the generally accepted model of VV Cep with the masses of both the M supergiant and the hot B star of about 20 M_&sun; should be revised. The period change due to mass transfer between the components or mass ejection from the VV Cep system can be explained, if one accepts the medium mass model for VV Cep, with the mass of the M star about 2.5 M_&sun; and of the B star about 8 M_&sun;. This model implies that the cool component of VV Cep could be an AGB star rather than a supergiant.

Affiliated with

Also associated with

No associations

Rating

The 1997/1998 eclipse of VV Cephei was late 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 1997/1998 eclipse of VV Cephei was late, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The 1997/1998 eclipse of VV Cephei was late will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1766074