2025RAA....25a5016I

Query : 2025RAA....25a5016I

2025RAA....25a5016I - Research in Astron. and astroph., 25, part no 1, 5016 (2025/January-0)

New Orbital Parameters of 850 Wide Visual Binary Stars and Their Statistical Properties.

IZMAILOV I. and KHOVRITCHEV M.

Abstract (from CDS):

Based on positional observations and measurements of radial velocities, the orbits of 850 wide visual binary stars have been determined. The parameters of the log-normal distributions for the histograms of orbital periods, stellar masses, and semimajor axes in astronomical units have been obtained. The eccentricity histogram for binary stars with orbital periods less than 400 yr follows a normal distribution centered at e = 0.545 ± 0.029. For stars with longer periods, this distribution obeys the law f = 2e, with accuracy to errors. The mass-to-luminosity relation for stars with well-determined masses is given by: $\mathrm{log}{L}_{\odot }\,=\,4.33\mathrm{log}{{\mathfrak{M}}}_{\odot }-0.11$, where L⊙ and ${{\mathfrak{M}}}_{\odot }$ are the luminosity and mass of the star in units of the solar luminosity and mass, respectively.

Abstract Copyright: © 2025. National Astronomical Observatories, CAS and IOP Publishing Ltd. All rights, including for text and data mining, AI training, and similar technologies, are reserved.

Journal keyword(s): (stars:) binaries: visual - stars: statistics - stars: fundamental parameters

VizieR on-line data: <Available at CDS (J/other/RAA/25.A5016): table1.dat table2.dat table3.dat table4.dat>

Status at CDS : Tables of objects will be appraised for possible ingestion in SIMBAD.

Simbad objects: 11

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Number of rows : 11
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 38 ** 00 05 41.01985 +45 48 43.5072 10.86 9.645 8.217 8.30   K6V+M0.5V 93 0
2 HD 38A SB* 00 05 41.0220797201 +45 48 43.550746689   10.17 8.826     K6V 135 0
3 HD 1326 PM* 00 18 22.8849799680 +44 01 22.637951588   9.61 8.14 7.3   M2V 602 0
4 * eta Cas PM* 00 49 06.2945942922 +57 48 54.638239716 4.04 4.02 3.44 2.94 2.58 F9V 680 0
5 * 31 Tau A * 03 52 00.229170 +06 32 05.63314   6.28 6.26     ~ 1 0
6 * 31 Tau ** 03 52 00.2291740237 +06 32 05.659794373 5.3         B3.5V+ 111 0
7 * 49 Ser A ** 16 13 18.4497126173 +13 31 36.845416252   8.12 7.34     G9V 124 0
8 HD 173739 PM* 18 42 46.7043860406 +59 37 49.409446059   10.43 8.93     M3V 427 1
9 HD 179958 PM* 19 12 05.0254435095 +49 51 20.695487091   7.12 6.47 6.1   G2V 146 0
10 * 61 Cyg A BY* 21 06 53.9395895022 +38 44 57.902349973 7.50 6.39 5.21 4.19 3.54 K5V 1099 0
11 * 61 Cyg ** 21 06 53.95 +38 44 57.9           ~ 190 0

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