J/ApJ/629/507 Observed orbital eccentricities for 391 binaries (Abt+, 2005)
Observed orbital eccentricities.
Abt H.A.
<Astrophys. J., 629, 507-511 (2005)>
=2005ApJ...629..507A 2005ApJ...629..507A
ADC_Keywords: Stars, double and multiple ; Binaries, spectroscopic
Keywords: binaries: spectroscopic - binaries: visual - stellar dynamics
Abstract:
For 391 spectroscopic and visual binaries with known orbital elements
and having B0-F0 IV or V primaries, we collected the derived
eccentricities. As has been found by others, those binaries with
periods of a few days have been circularized. However, those with
periods up to about 1000 or more days show reduced eccentricities that
asymptotically approach a mean value of 0.5 for the longest periods.
For those binaries with periods greater than 1000 days their
distribution of eccentricities is flat from 0 to nearly 1, indicating
that in the formation of binaries there is no preferential
eccentricity. The binaries with intermediate periods (10-100 days)
lack highly eccentric orbits.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 53 155 B0-B9.5 IV or V binaries with known orbital elements
table2.dat 53 151 A0-A5 IV or V primaries with known orbital elements
table3.dat 53 85 A6-F0 VI or V primaries with known orbital elements
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See also:
V/50 : Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)
V/122 : 9th Catalogue of Spectroscopic Binary Orbits (Pourbaix+ 2004)
J/ApJ/616/562 : Rotational velocities in binaries (Abt+, 2004)
Byte-by-byte Description of file: table1.dat table2.dat table3.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- HR The HR number
7- 13 A7 --- HD The HD number
15- 28 F14.6 d Per Period
30- 42 A13 --- Type Binary type (spectroscopic/visual binary)
44- 49 F6.4 --- e Orbital eccentricity
51- 53 A3 --- Grade Grade (1)
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Note (1): Quality of the orbital elements as assigned by the compilers
(1 to 5 for SBs, 1 to 9 for VBs - 1 being the lowest grade).
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History:
* 07-Dec-2005: From electronic version of the journal
* 27-Apr-2006: Errors in table2:
- HR 963 modified into HR 8963 in table2.
- Some confusion in the complex system HR 7775-7776 corrected.
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 07-Dec-2005