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HD 143287


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Absolute proper motions of open clusters. I. Observational data
Mean proper motions and parallaxes of 205 open clusters were determinedfrom their member stars found in the Hipparcos Catalogue. 360 clusterswere searched for possible members, excluding nearby clusters withdistances D < 200 pc. Members were selected using ground basedinformation (photometry, radial velocity, proper motion, distance fromthe cluster centre) and information provided by Hipparcos (propermotion, parallax). Altogether 630 certain and 100 possible members werefound. A comparison of the Hipparcos parallaxes with photometricdistances of open clusters shows good agreement. The Hipparcos dataconfirm or reject the membership of several Cepheids in the studiedclusters. Tables 1 and 2 are only available in electronic form at theCDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html

Five-colour photometry of OB-stars in the Southern Hemisphere
Observations of OB-stars, made in 1959 and 1960 at the Leiden SouthernStation near Hartebeespoortdam, South Africa, with the VBLUW photometerattached to the 90 cm light-collector, are given in this paper. They arecompared with photometry obtained by \cite[Graham (1968),]{gra68}\cite[Walraven & Walraven (1977),]{wal77} \cite[Lub & Pel(1977)]{lub77} and \cite[Van Genderen et al. (1984).]{gen84} Formulaefor the transformation of the present observations to those of\cite[Walraven & Walraven (1977)]{wal77} and \cite[Lub & Pel(1977)]{lub77} are given. Table 4 is only available in electronic format the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) orvia http://cdsweb.u-strasbg.fr/Abstract.html

Slowly pulsating B stars
Photometric data obtained during several years of observations of sevenB-type stars are analyzed, including HD 74195 (Omicron Velorum), HD74560 (HD 3467), HD 123515 (HR 5296), HD 143309, HD 160124, HD 177863(HR 7241), and HD 181558 (HR 7339). Results indicate that all sevenstars are multiperiodic variables with periods of the order of days. Twoperiods were identified for HD 177863, three periods for HD 74560 and HD181558, four periods for HD 123515, five periods for HD 74195, sixperiods for HD 143309, and eight periods for HD 160124. Themultiperiodicity and the amplitude behavior of these stars point towardpulsation in high-radial-order g-modes in the stars. It is suggestedthat these stars form a distinct group of early-type variables, whichare named here 'slowly pulsating B stars'.

Intermediate- and wide-band photometry of NGC 6025.
Abstract image available at:http://adsabs.harvard.edu/abs/1975PASP...87..975K

The open cluster NGC 6025
Abstract image available at:http://adsabs.harvard.edu/abs/1971PASP...83..800F

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观测天体数据

星座:矩尺座
右阿森松:16h02m53.17s
赤纬:-60°20'10.4"
视星:8.316
距离:268.817 天文距离
右阿森松适当运动:-16.1
赤纬适当运动:-20.8
B-T magnitude:8.36
V-T magnitude:8.32

目录:
适当名称   (Edit)
HD 1989HD 143287
TYCHO-2 2000TYC 9036-3653-1
USNO-A2.0USNO-A2 0225-24440156
HIPHIP 78604

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