J/A+A/459/849 Radial velocities of ups Sgr (Koubsky+, 2006)
Properties and nature of Be stars.
25. A new orbital solution and the nature of a peculiar emission-line
binary upsilon Sgr.
Koubsky P., Harmanec P., Yang S., Netolicky M., Skoda P., Slechta M.,
Korcakova D.
<Astron. Astrophys. 459, 849 (2006)>
=2006A&A...459..849K 2006A&A...459..849K
ADC_Keywords: Stars, Be ; Radial velocities
Keywords: stars: emission-line, Be - stars: binaries -
stars: individual: upsilon Sgr
Abstract:
Binaries observed in the initial rapid phase of mass exchange between
the components are very rare since the statistical probability of
finding them is low. At the same time, thorough studies of them are
extremely important for better understanding the process of
large-scale mass exchange and possible mass loss from the system. One
of these objects is probably upsilon Sgr.
By analyzing 35 new electronic spectra and numerous published spectral
and photometric observations, we derived the new orbital elements, an
upper limit to a secular period change, and also the peculiar RV curve
of the blue-shifted Hα absorption. Possible models of the
binary and its evolutionary stage are then discussed critically.
Description:
Reduction of new spectra was carried out with the IRAF and SPEFO
programs. All orbital elements were derived with the FOTEL program and
period searches were carried out using the phase-dispersion
minimalization technique.
Objects:
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RA (2000) DE Designation(s)
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19 21 43.62 -15 57 18.1 upsilon Sgr = HD 181615
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 42 222 Individual radial velocities of ups Sgr
observations from several stations
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See also:
J/A+A/324/965 : UBV photometry of V360 Lac. Paper 17. (Hill+ 1997)
J/A+A/328/551 : Spectroscopic data of 4 Herculis. Paper 18. (Koubsky+ 1997)
J/A+A/387/580 : UBV photometry of V832 Cyg. Paper 21. (Harmanec+, 2002)
J/A+A/416/669 : UBV photometry of HD 6226. Paper 22. (Bozic+, 2004)
J/A+A/419/607 : Long-term variations of kappa Dra. Paper 23. (Saad+, 2004)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d HJD Heliocentric Julian date
16- 21 F6.2 km/s RV Radial velocity
27- 31 F5.3 -- Weight Weight of the data point
36- 37 I2 -- Obs Code for observatory and spectrograph (1)
42 I1 -- Comp [1/2] Binary component
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Note (1): The telescopes and spectrographs with which the RVs were obtained,
are as follows:
1 = James Lick 0.91-m refractor, Mills 3-prism spg, phot. plates
2 = Yerkes 1.02-m refractor, Bruce 1-prism spg. phot. plates
3 = DAO Plaskett 1.8-m reflector, Cass. IM or IS prism spgs., phot. plates
4 = Mt. Wilson Hooker 2.54-m reflector, coude grating spg.,
114-inch camera, phot. plates
14 = Mt Wilson Hooker 2.54-m reflector, coude grating spg.,
32-inch camera, phot. plates
5 = IUE satellite 0.45-m reflector, Cass. echelle spgs., Vidicon cameras
6 = CTIO 1-m reflector, Cass. spg., image tube & phot. plates
7 = MJUO McLellan 1-m reflector, Cass. fiber fed echelle spg.,
Reticon 1872
8 = SAAO 1.9-m reflector, Cass spg., image tube & intensified Reticon
9 = DAO McKellar 1.2-m reflector, coude spg., SITe-4 4096x2048 CCD
10 = Ondvrejov 2-m reflector, coude spg., SITe-005 800x2000 CCD
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Acknowledgements: Pavel Koubsky, koubsky(at)sunstel.asu.cas.cz
References:
Harmanec et al., Paper 1 (EW Lac) 1971BAICz..22...87H 1971BAICz..22...87H
Harmanec et al., Paper 2 (88 Her) 1972BAICz..23..218H 1972BAICz..23..218H
Harmanec et al., Paper 3 (4 Her) 1973A&A....22..337H 1973A&A....22..337H
Harmanec et al., Paper 4 (88 Her) 1974A&A....33..117H 1974A&A....33..117H
Harmanec et al., Paper 5 (4 Her) 1975A&A....42...47H 1975A&A....42...47H
Harmanec et al., Paper 6 (4 Her) 1976BAICz..27...47H 1976BAICz..27...47H
Doazan et al., Paper 7 (88 Her) 1982A&AS...50..481D 1982A&AS...50..481D
Harmanec et al., Paper 8 (88 Her) 1978BAICz..29..278H 1978BAICz..29..278H
Harmanec et al., Paper 9 (HD 174237) 1978BAICz..29..288K 1978BAICz..29..288K
Harmanec et al., Paper 10 (CX Dra) 1980BAICz..31...75K 1980BAICz..31...75K
Horn et al., Paper 11 (V1294 Aql) 1982BAICz..33..308H 1982BAICz..33..308H
Stefl, Paper 12 (KX And) 1985BAICz..36..313S 1985BAICz..36..313S
Koubsky et al., Paper 13 (V923 Aql) 1989BAICz..40...31K 1989BAICz..40...31K
Stefl et al., Paper 14 (KX And) 1990BAICz..41...29S 1990BAICz..41...29S
Harmanec et al., Paper 15 (LQ And) 1991BAICz..42....1H 1991BAICz..42....1H
Juza et al., Paper 16 (5 Dra) 1991BAICz..42...39J 1991BAICz..42...39J
Hill et al., Paper 17 (V360 Lac) 1997A&A...324..965H 1997A&A...324..965H, Cat. J/A+A/324/965
Koubsky et al., Paper 18 (4 Her) 1997A&A...328..551K 1997A&A...328..551K, Cat. J/A+A/328/551
Koubsky et al., Paper 19 (60 Cyg) 2000A&A...356..913K 2000A&A...356..913K
Harmanec et al., Paper 20 (gamma Cas) 2000A&A...364L..85H 2000A&A...364L..85H
Harmanec et al., Paper 21 (V832 Cyg) 2002A&A...387..580H 2002A&A...387..580H, Cat. J/A+A/387/580
Bozic et al., Paper 22 (HD 6226) 2004A&A...416..669B 2004A&A...416..669B, Cat. J/A+A/416/669
Saad et al., Paper 23 (kappa Dra) 2004A&A...419..607S 2004A&A...419..607S, Cat. J/A+A/419/607
(End) Patricia Vannier [CDS] 15-Jun-2006