2001A&A...374..243W


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.14CEST07:09:12

2001A&A...374..243W - Astronomy and Astrophysics, volume 374, 243-249 (2001/7-4)

Apsidal motion in eccentric eclipsing binaries: TV Ceti and V451 Ophiuchi.

WOLF M., DIETHELM R. and HORNOCH K.

Abstract (from CDS):

Several new times of minimum light recorded with photoelectric means have been gathered for two bright eccentric eclipsing binaries TV Cet (P=9.1d, e=0.055) and V451 Oph (P=2.2d, e=0.013). Analysis of all available eclipse timings of TV Ceti has revealed a small motion of the line of apsides of {dot}(ω)=0.00030±0.00008deg/cycle, corresponding to an apsidal period of U=30000±8000 years. The contribution from the general relativity effects is dominant ({dot}(ω)rel/{dot}(ω)∼80%). In this system, the third body on an eccentric orbit with a period of 28.5 years is also predicted. The more precise values for the apsidal motion elements were computed for V451 Oph, where apsidal motion with a period of 170±5 years was confirmed. The corresponding internal structure constants log k2 were derived.

Abstract Copyright:

Journal keyword(s): stars: binaries: eclipsing - stars: individual: TV Cet - stars: individual: V451 Oph - stars: fundamental parameters - relativity

Simbad objects: 7

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Number of rows : 7

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* TV Cet Al* 03 14 36.5089987057 +02 45 16.380410822   9.02 8.59     F3V 84 1
2 V* RU Mon Al* 06 54 12.3145605571 -07 35 45.031300451   10.64 10.51     B9pv 97 1
3 V* U Oph Al* 17 16 31.7132736201 +01 12 37.996480495   5.941 5.921     B3V 360 1
4 V* V451 Oph Al* 18 29 14.0426408049 +10 53 31.427616263   7.95 7.91     A0IV 152 0
5 V* YY Sgr Al* 18 44 35.8395514834 -19 23 23.033010890   10.25 10.17     B8/9II 67 1
6 V* HS Her Al* 18 50 49.7706078393 +24 43 11.940056707 8.180 8.580 8.560     B6III 110 1
7 V* DR Vul Al* 20 13 46.8509605348 +26 45 01.625954051   8.94 8.71     B8 82 1

    Equat.    Gal    SGal    Ecl

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2020.08.14-07:09:12

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