J/A+AS/130/223 Multiplicity among peculiar A stars I. (North+ 1998)
Multiplicity among peculiar A stars I. The Ap stars HD 8441 and HD 137909,
and the Am stars HD 43478 and HD 96391
North P., Carquillat J.-M., Ginestet N., Carrier F., Udry S.
<Astron. Astrophys. Suppl. Ser. 130, 223 (1998)>
=1998A&AS..130..223N 1998A&AS..130..223N (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, spectroscopic ; Radial velocities ; Photometry, Geneva
Keywords: stars: binaries: spectroscopic - stars: binaries: eclipsing -
stars: individual: HD 8441, HD 43478, HD 93961, HD 137909
Description:
Radial velocities measured with the Coravel scanner are used to
determine the orbits of two Ap stars and of two Am stars. The Ap stars
HD 8441 appears to be a triple system (though of SB1 type), while
improved orbital elements and masses are given for the classical Ap
star beta CrB. Both Am stars HD 43478 and HD 93961 are SB2 binaries,
and the fundamental elements of the former can be known thanks to its
eclipsing nature.
Objects:
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RA (2000) DE Designation(s)
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01 24 18.7 +43 08 32 HD 8441
15 27 50.3 +29 06 16 HD 137909
06 17 51.5 +32 30 16 HD 43478
11 08 22.0 +71 57 33 HD 96391
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table6.dat 34 107 Individual CORAVEL velocities of HD 8441
table7.dat 34 78 Individual CORAVEL velocities of HD 137909
table8.dat 70 36 Photometry of HD 43478
table9.dat 34 56 Individual CORAVEL velocities of HD 43478 A
table10.dat 34 57 Individual CORAVEL velocities of HD 43478 B
table11.dat 34 44 Individual CORAVEL velocities of HD 96391 A
table12.dat 34 36 Individual CORAVEL velocities of HD 96391 B
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See also:
II/169 : Catalogue of observations in the Geneva photometric system
Byte-by-byte Description of files: table[679].dat table1?.dat
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Bytes Format Units Label Explanations
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1- 8 A8 "DD/MM/YY" Date Observation date
10- 20 F11.3 d HJD Heliocentric Julian Day
23- 28 F6.2 km/s HRV Heliocentric radial velocity
31- 34 F4.2 km/s e_HRV individual rms error on HRV
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Byte-by-byte Description of files: table8.dat
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Bytes Format Units Label Explanations
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1- 11 F11.3 d HJD Heliocentric Julian day
15 I1 --- Q Photometric Q weight (Rufener 1988, Cat. II/169)
19- 23 F5.3 mag [V] Magnitude in the visible
26 I1 --- P Photometric P weight (Rufener 1988, Cat. II/169)
30- 34 F5.3 mag [U-B] Geneva [U-B] index
37- 41 F5.3 mag [V-B] Geneva [V-B] index
44- 48 F5.3 mag [B1-B] Geneva [B1-B] index
51- 55 F5.3 mag [B2-B] Geneva [B2-B] index
58- 62 F5.3 mag [V1-B] Geneva [V1-B] index
65- 69 F5.3 mag [G-B] Geneva [G-B] index
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Acknowledgements: Pierre North
References:
Rufener F., 1988, "Catalogue of stars measured in the Geneva Observatory
Photometric system", 4th Edition, Geneva Observatory (Cat. II/169)
(End) Patricia Bauer [CDS] 05-Mar-1998