J/other/AstBu/62.235 Metal-poor stars speckle interferometry (Rastegaev+, 2007)
Speckle interferometry of metal-poor stars in the solar neighborhood. I.
Rastegaev D.A., Balega Yu.Yu., Malogolovets E.V
<Astrophys. Bull., 62, 235-243 (2007)>
=2007AstBu..62..235R 2007AstBu..62..235R
ADC_Keywords: Stars, nearby ; Stars, double and multiple
Abstract:
We report the results of speckle-interferometric observations of 109
high proper-motion metal-poor stars made with the 6-m telescope of the
Special Astrophysical Observatory of the Russian Academy of Sciences.
We resolve eight objects G102-20, G191-55, BD+19 1185A, G89-14,
G87-45, G87-47, G111-38, and G114-25 into individual components and
we are the first to astrometrically resolve seven of these stars.
New resolved systems included two triple (G111-38, G87-47) and one
quadruple (G89-14) star. The ratio of single:binary:triple:quadruple
systems among the stars of our sample is equal to 71:28:6:1.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 58 43 WDS components for stars of the sample
table4.dat 39 101 Unresolved stars
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See also:
J/A+A/325/159 : Companions to M dwarfs within 5pc (Leinert+ 1997)
J/A+A/385/87 : Speckle interferometry of nearby multiple stars (Balega+, 2002)
J/A+A/422/627 : Nearby multiple stars speckle interferometry (Balega+, 2004)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- Name Name
17- 26 A10 --- WDS WDS Name (HHMMm+DDMM, CCDM HHMMm+DDMM in Simbad)
28- 38 A11 --- Comp Other binary designation
40- 44 F5.1 arcsec rho ? Angular separation
46- 49 F4.2 mag Dm ? Magnitude difference between the components
51- 52 A2 --- St [±? ] Physical binary status (1)
54- 58 A5 --- Refs References (2)
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Note (1): Status as follows:
+ = possibly physically bound to the to the main star
- = possibly unbound optical pairs
? = decision not sure
Note (2): References as follows:
8 = Aleen et al., 2000, Cat. J/A+A/356/529
9 = Zapatero Osorio & Martin, 2004, Cat. J/A+A/419/167
15 = Hipparcos catalog, Cat. I/239
* = observations confirm the presence of the given component
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Name
15- 17 I3 nm Filt Filter central wavelength (545, 550 or 800)
18 A1 --- --- [/]
19- 21 I3 nm DFilt Filter width
22 A1 --- --- [;]
23- 25 I3 nm Filt2 ? Second filter central wavelength (800)
26 A1 --- --- [/]
27- 29 I3 nm DFilt2 ? Second filter width
31- 39 F9.4 yr Epoch Epoch of observation
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 07-Jul-2008