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HD 183364


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Публикации по объекту

Five New δ Scuti Stars
We present high-resolution spectroscopy and precision photometry of fivenew, relatively bright δ Scuti stars. They were originally chosenas photometric comparison stars in our program of automated,high-precision photometry of solar-type stars and subsequentlyrecognized as new variable stars. We conducted follow-up spectroscopicand photometric observations to determine the properties of the starsand their types of variability. All five of the stars presented herebelong to the most common subgroup of low-amplitude, Population Iδ Scuti variables. One of the stars, HD 10502, is the thirdexample of a δ Scuti variable with composite broad and narrowspectroscopic line profiles suggesting the presence of a circumstellarshell or disk.

Radial velocities. Measurements of 2800 B2-F5 stars for HIPPARCOS
Radial velocities have been determined for a sample of 2930 B2-F5 stars,95% observed by the Hipparcos satellite in the north hemisphere and 80%without reliable radial velocity up to now. Observations were obtainedat the Observatoire de Haute Provence with a dispersion of 80Ä,mm(-1) with the aim of studying stellar and galactic dynamics.Radial velocities have been measured by correlation with templates ofthe same spectral class. The mean obtained precision is 3.0 km s(-1)with three observations. A new MK spectral classification is estimatedfor all stars. Based on observations made at the Haute ProvenceObservatory, France and on data from The Hipparcos Catalogue, ESA.Tables 4, 5 and 6 are only available in electronic form at the CDS viaanonymous ftp to cdsarc.u-strasbg.fr or viahttp://cdsweb.u-strasbg.fr/Abstract.htm

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Наблюдательные данные и астрометрия

Созвездие:Лебедь
Прямое восхождение:19h27m53.12s
Склонение:+33°22'26.3"
Видимая звёздная величина:7.357
Расстояние:164.204 парсек
Собственное движение RA:-15
Собственное движение Dec:-27.9
B-T magnitude:7.669
V-T magnitude:7.383

Каталоги и обозначения:
Собственные имена
HD 1989HD 183364
TYCHO-2 2000TYC 2658-57-1
USNO-A2.0USNO-A2 1200-11658211
HIPHIP 95699

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