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HD 120680


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Публикации по объекту

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.

The detection of small-amplitude variations in the extreme helium star LSS 3184
A search for variability in the extreme helium star LSS 3184 shows atleast one frequency (period ~0.107d semi-amplitude ~0.01 mag in B) andthe first harmonic. This agrees with the prediction by Saio that thestar should pulsate, unless very metal-weak, due to the classical kappamechanism and the iron opacity bump near 2x10^5K.

Two-colour diagrams for differentially rotating stars
Not Available

VBLUW-photometry of stars in small fields around 13 planetary nebulae
Observations of stars in small fields around 13 planetary nebulae, madeusing the Walraven five-channel VBLUW photometer, are presented anddescribed. The fields are found to have a radius of about 0.3 deg. Thefinding charts for the measured stars are given. It is shown that moststars are brighter than mV of about 14 mag and that the photometry hasan accuracy of better than 1 percent, except for stars that are observedwith short test-integrations and for stars fainter than mV of about 14mag. The photometric data for all stars are presented, together with alist of identifications and spectral types.

UBV photometry for southern OB stars
New UBV photometry of 1227 OB stars in the southern Milky Way ispresented. For 1113 of these stars, MK spectral types have been reportedpreviously in a comprehensive survey to B = 10.0 mag.

On the 4430 A interstellar band - A visual classification
A system of visual classification of the strength of the interstellarband 4430 A has been developed, based on spectra taken at spectralclassification dispersion. The intensity of the band was divided into 8main classes, defined by a group of selected standard stars. The systemwas applied to 1,111 southern OB stars contained in the catalog ofspectral types by Garrison, Hiltner, and Schild (1977). The mean errorin the classification was estimated to be plus or minus 1 class.Equivalent widths were measured for 100 stars; an excellent correlationwith the visual estimations was obtained. A calibration between thesetwo parameters is given.

MK spectral classifications for southern OB stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1977ApJS...35..111G&db_key=AST

Equivalent widths and rotational velocities of southern early-type stars
Not Available

Luminosities and Motions of the F-Type Stars. I. Luminosity and Metal Abundance Indices for Disk Population Stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1971PASP...83..741E&db_key=AST

Radial velocities of Southern B stars determined at the Radcliffe Observatory.
Not Available

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Наблюдательные данные и астрометрия

Созвездие:Циркуль
Прямое восхождение:13h53m18.13s
Склонение:-66°30'44.8"
Видимая звёздная величина:7.108
Расстояние:3571.429 парсек
Собственное движение RA:-4.3
Собственное движение Dec:-4.1
B-T magnitude:7.173
V-T magnitude:7.114

Каталоги и обозначения:
Собственные имена
HD 1989HD 120680
TYCHO-2 2000TYC 9016-1303-1
USNO-A2.0USNO-A2 0225-18422626
HIPHIP 67796

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