J/MNRAS/389/925 Triple and quadruple stars (Tokovinin, 2008)
Comparative statistics and origin of triple and quadruple stars.
Tokovinin A.
<Mon. Not. R. Astron. Soc., 389, 925-938 (2008)>
=2008MNRAS.389..925T 2008MNRAS.389..925T
ADC_Keywords: Stars, double and multiple ; Stars, masses
Keywords: binaries: close - binaries: general - stars: formation -
stars: statistics
Abstract:
The statistics of catalogued quadruple stars consisting of two
binaries (hierarchy 2+2), is studied in comparison with triple
stars, with respective sample sizes of 81 and 725. Seven
representative quadruple systems are discussed in greater detail.
Description:
The statistical samples of multiple stars containing a 2+1
hierarchical structure (triple, table 2) and 2+2 structure (quadruple,
table 3) are given. The data are extracted from the updated
Multiple-Star Catalog,
http://www.ctio.noao.edu/~atokovin/stars/index.php
(see also Tokovinin, 1997, Cat. J/A+AS/124/75).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 57 725 Triple stars
table3.dat 71 81 Quadruple stars
notes.dat 80 172 Individual notes
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See also:
J/A+AS/124/75 : Multiple star catalogue (MSC) (Tokovinin 1997-1999)
B/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2010)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- WDS WDS J2000 name
13- 17 F5.2 [d] logPL Outer period
19- 23 F5.2 [d] logPS Inner period
25- 29 F5.2 solMass Mass1 Primary mass
31 A1 --- n_Mass1 [a*mvq] Mass code for Mass1 (G1)
33- 37 F5.2 solMass Mass2 Secondary mass
39 A1 --- n_Mass2 [a*m] Mass code for Mass2 (G1)
41- 45 F5.2 solMass Mass3 Tertiary mass
47 A1 --- n_Mass3 [a*mvq] Mass code for Mass3 (G1)
50- 55 F6.1 mas plx Parallax
57 A1 --- n_WDS [*] * indicates a note in notes.dat file
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- WDS WDS J2000 name
11 A1 --- f_WDS [*] 17146+1423 corrected into 17146+1424
13- 17 F5.2 [d] logPL Outer period
19- 23 F5.2 [d] logPS1 Inner period 1
25- 29 F5.2 [d] logPS2 Inner period 2
31- 35 F5.2 solMass Mass11 Primary mass 1
37 A1 --- n_Mass11 [*a] Mass code for Mass11 (G1)
39- 43 F5.2 solMass Mass12 Secondary mass 1
45 A1 --- n_Mass12 [*asqmv:] Mass code for Mass12 (G1)
47- 51 F5.2 solMass Mass21 Primary mass 2
53 A1 --- n_Mass21 [*a] Mass code for Mass21 (G1)
55- 59 F5.2 solMass Mass22 Secondary mass 2
61 A1 --- n_Mass22 [*asqmv:] Mass code for Mass22 (G1)
65- 69 F5.1 mas plx Parallax
71 A1 --- n_WDS [*] * indicates a note in notes.dat file
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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1- 10 A10 -- WDS WDS J2000 name
12- 80 A69 --- Note Text of the note (1)
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Note (1): Abbreviations used mean:
SB = spectroscopic binary
SB1 = single-lined spectroscopic binary
SB2 = double-lined spectroscopic binary
VB = visual binary
EB = eclipsing binary
CPM = common-proper-motion pair
PMS = pre-Main Sequence
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Global notes:
Note (G1): Mass codes as follows::
* = masses from orbit, isochrone fitting etc.
a = estimated from spectral type or B-V color index from Allen's tables
s = sum of masses for the sub-system(s)
q = estimated from primary mass and mass ratio of SB2
m = minimum secondary mass for SB1
v = estimated from magnitude difference of a visual binary
: = uncertain, magnitude difference assumed to be 2mag
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 09-Feb-2010