2003A&A...398.1091B


Query : 2003A&A...398.1091B

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 - 2022
#notes
1 V* DM Per EB* 02 25 58.0074007224 +56 06 10.009213488   8.03 7.95     B5V+A: 118 1
2 * bet Per EB* 03 08 10.1324535 +40 57 20.328013 1.70 2.07 2.12 2.08 2.11 B8V 1180 2
3 * lam Tau EB* 04 00 40.8157175 +12 29 25.225937 2.66 3.29 3.41 3.44 3.53 B4IV 339 0
4 V* IM Aur EB* 05 15 29.7441759312 +46 24 21.453397632   8.07 8.11     B7V 124 0
5 V* IU Aur SB* 05 27 52.3995663216 +34 46 58.262388600 7.91 8.57 8.39     O9.5IV(n) 175 0
6 V* AS Cam EB* 05 29 46.9108852512 +69 29 45.363748704   8.59 8.60     A0 153 1
7 V* VV Ori EB* 05 33 31.4464933704 -01 09 21.859452468 4.26 5.16 5.34 5.39 5.59 B1V+B4.5V 247 0
8 V* SV Gem EB* 06 00 41.0193040944 +24 28 25.859564076   10.98 10.57     B3 39 0
9 V* V907 Sco EB* 17 56 55.5622524456 -34 45 01.218496968   8.75 8.63     B9V 48 0
10 V* SS Lac EB* 22 04 41.5514288040 +46 25 38.110644768   10.26 10.12     B9V 89 0

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2022.05.28-22:26:27

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