2003A&A...398.1091B


C.D.S. - SIMBAD4 rel 1.7 - 2020.11.28CET21:56:44

2003A&A...398.1091B - Astronomy and Astrophysics, volume 398, 1091-1102 (2003/2-2)

On the detectability of long period perturbations in close hierarchical triple stellar systems.

BORKOVITS T., ERDI B., FORGACS-DAJKA E. and KOVACS T.

Abstract (from CDS):

We study the possibility of the detection of the low amplitude long (P') period perturbative effect of a distant third companion on the motion of a close binary. We give a new, more accurate analytical formula for this kind of perturbation affecting the moments of the times of minima in eclipsing binaries. The accuracy of this formula is tested by numerical integrations carried out for several initial configurations. We also describe a numerical method based on a non-linear Levenberg-Marquardt algorithm which makes it possible to separate this dynamical effect from the pure geometrical light-time effect in the eclipsing O-C diagram. The capabilities of this new method are demonstrated by the analysis of numerically simulated O-Cs for test systems having physical parameters very similar to Algol and IU Aur. The results show that the above mentioned effect would be detectable in these systems nowadays, observing almost each minima events in a 1-2 year-long interval.

Abstract Copyright:

Journal keyword(s): methods: analytical - methods: numerical - celestial mechanics - binaries: close - binaries: eclipsing

Simbad objects: 10

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Number of rows : 10

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* DM Per Al* 02 25 58.0077659596 +56 06 10.011871690   8.03 7.95     B5V+A: 116 1
2 * bet Per EB* 03 08 10.1324535 +40 57 20.328013 1.70 2.07 2.12 2.08 2.11 B8V 1154 2
3 * lam Tau Al* 04 00 40.8157175 +12 29 25.225937 2.66 3.29 3.41 3.44 3.53 B4IV 333 0
4 V* IM Aur Al* 05 15 29.7433023295 +46 24 21.454919194   8.07 8.11     B7V 124 0
5 V* IU Aur bL* 05 27 52.4053853877 +34 46 58.343520392 7.91 8.57 8.39     B3Vnne 170 0
6 V* AS Cam Al* 05 29 46.9126130257 +69 29 45.381086699   8.59 8.60     A0 149 1
7 V* VV Ori Al* 05 33 31.4472401583 -01 09 21.859507137 4.26 5.16 5.34 5.39 5.59 B9IV/V 240 0
8 V* SV Gem Al* 06 00 41.0190969659 +24 28 25.861493543   10.98 10.57     B3 34 0
9 V* V907 Sco Al* 17 56 55.5620526460 -34 45 01.223170194   8.75 8.63     B9V 45 0
10 V* SS Lac Al* 22 04 41.5519417469 +46 25 38.110384335   10.26 10.12     B9V 80 0

    Equat.    Gal    SGal    Ecl

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2020.11.28-21:56:44

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