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HD 166478


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Pulkovo compilation of radial velocities for 35495 stars in a common system.
Not Available

SB9: The ninth catalogue of spectroscopic binary orbits
The Ninth Catalogue of Spectroscopic Binary Orbits(http://sb9.astro.ulb.ac.be) continues the series of compilations ofspectroscopic orbits carried out over the past 35 years by Batten andcollaborators. As of 2004 May 1st, the new Catalogue holds orbits for2386 systems. Some essential differences between this catalogue and itspredecessors are outlined and three straightforward applications arepresented: (1) completeness assessment: period distribution of SB1s andSB2s; (2) shortest periods across the H-R diagram; (3)period-eccentricity relation.

Reprocessing the Hipparcos Intermediate Astrometric Data of spectroscopic binaries. II. Systems with a giant component
By reanalyzing the Hipparcos Intermediate Astrometric Data of a largesample of spectroscopic binaries containing a giant, we obtain a sampleof 29 systems fulfilling a carefully derived set of constraints andhence for which we can derive an accurate orbital solution. Of these,one is a double-lined spectroscopic binary and six were not listed inthe DMSA/O section of the catalogue. Using our solutions, we derive themasses of the components in these systems and statistically analyzethem. We also briefly discuss each system individually.Based on observations from the Hipparcos astrometric satellite operatedby the European Space Agency (ESA 1997) and on data collected with theSimbad database.

An abundance analysis of the single-lined spectroscopic binaries with barium stars-like orbital elements. II. The spectroscopic data
High-resolution spectroscopic observations are presented for 19single-lined binaries (giants and dwarfs) with orbital elements and massfunctions similar to those of barium stars, two radial velocitynon-variable barium stars, and two standards. All binary systems containan unseen low-mass component, presumably, a white dwarf. The equivalentwidths and oscillator strengths are given for all measured spectrallines. Tables 2 and 3 are only available in electronic form at the CDSvia anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html}

An abundance analysis of the single-lined spectroscopic binaries with barium stars-like orbital elements. I. Analysis and results
Detailed abundance analyses have been carried out for 17 single-linedbinaries (giants and dwarfs) with orbital elements and mass functionssimilar to those of barium stars, using high-dispersion CCD spectra andmodel atmospheres. All these binary systems contain an unseen low-masscompo nent, presumably, a white dwarf. A mild enhancement (+0.1-0.25dex) of the 9 averaged s-process elements abundances has been found onlyfor two stars. The heavy-element overabundances in these stars are muchless marked than those of the classical barium stars having similarorbital periods. We have concluded that the existence of a white dwarf(WD) companion in binary systems with barium star like characteristicsis not sufficient to produce a strong barium star. However, five of theanalyzed giants show a significant enhancement (0.2-0.3 dex) of barium.The analysis indicates that a main sequence companion has not asignificant influence (due to tidal mixing, as has been sometimessuggested) on the internal structure (chemical composition) of theprimary star. Since barium enhanced giants occupy a place on the(eccentricity-orbital period) plane similar to BaII stars we haveconcluded that a mild barium enhancement in these stars is due to masstransfer from the companion during its late phases of evolution. Thus itseems likely that all giants (primaries) in barium star like binarysystems with WD component have chemical peculiarities (very slight insome cases) depending, apparently, on the efficiency of mass transfer ina specific binary system. The significant enhancement of heavy elementsin the atmospheres of two radial velocity non-variable barium starsshows then that these barium stars have either very long orbital periodsor high inclined orbital planes.

Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Subtittle: Radial velocities: The Wilson-Evans-Batten catalogue.
We give a common version of the two catalogues of Mean Radial Velocitiesby Wilson (1963) and Evans (1978) to which we have added the catalogueof spectroscopic binary systems (Batten et al. 1989). For each star,when possible, we give: 1) an acronym to enter SIMBAD (Set ofIdentifications Measurements and Bibliography for Astronomical Data) ofthe CDS (Centre de Donnees Astronomiques de Strasbourg). 2) the numberHIC of the HIPPARCOS catalogue (Turon 1992). 3) the CCDM number(Catalogue des Composantes des etoiles Doubles et Multiples) byDommanget & Nys (1994). For the cluster stars, a precise study hasbeen done, on the identificator numbers. Numerous remarks point out theproblems we have had to deal with.

Statistical Analysis of a Sample of Spectroscopic Binaries Containing Late Type Giants
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1993A&A...271..125B&db_key=AST

Spectroscopic binaries - 15th complementary catalog
Published observational data on the orbital characteristics of 436spectroscopic binaries, covering the period 1982-1986, are compiled intables. The data sources and the organization of the catalog are brieflydiscussed, and notes are provided for each item.

Photoelectric radial velocities, Paper XIII - 406 ninth-magnitude K0 stars in the Clube Selected Areas
Radial velocities are given for 406 ninth-magnitude late-type stars. Thestars are grouped in 10 small regions located on a systematic plan atGalactic latitudes of + or - 35 deg. Each star has been observed atleast twice, and the mean velocities are accurate to about less than 1km/s. Thirty spectroscopic binaries have been discovered; orbits havealready been given for 13 of them, and observations of the others arecontinuing.

Photoelectric radial velocities. XI - The orbits of four more spectroscopic binaries in the Clube Selected Areas
Orbits are presented for four ninth-magnitude stars about which the onlyspectroscopic datum previously known is the HD type, K0 in each case.The most interesting of the four stars is perhaps HD 145677, whose lackof proper motion suggests a high luminosity which is hardly compatiblewith the shortness (4.4 days) of its orbital period.

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Pozíciós és asztrometriai adatok

Csillagkép:Sárkány
Rektaszcenzió:18h06m25.86s
Deklináció:+62°57'08.3"
Vizuális fényesség:7.992
Távolság:340.136 parszek
RA sajátmozgás:-11.4
Dec sajátmozgás:1.1
B-T magnitude:9.275
V-T magnitude:8.098

Katalógusok és elnevezések:
Megfelelő nevek   (Edit)
HD 1989HD 166478
TYCHO-2 2000TYC 4205-1120-1
USNO-A2.0USNO-A2 1500-06426960
HIPHIP 88696

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