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HD 135383 (OP Aps)


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A revised catalogue of delta Sct stars
An extensive and up-dated list of delta Sct stars is presented here.More than 500 papers, published during the last few years, have beenrevised and 341 new variables have been added to our last list, sixyears ago. This catalogue is intended to be a comprehensive review onthe observational characteristics of all the delta Sct stars known untilnow, including stars contained in earlier catalogues together with othernew discovered variables, covering information published until January2000. In summary, 636 variables, 1149 references and 182 individualnotes are presented in this new list. Tables 1 and 2 will be accessibleonly in electronic form at the CDS via anonymous ftp tocdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html

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The discovery of new gamma Doradus stars from the HIPPARCOS mission
We present a classification of 39 new variable stars with spectral typebetween A2 and F8 discovered by Hipparcos with the aim to find new gammaDoradus stars. We have used a multivariate classification scheme andreport the discovery of 14 new gamma Doradus variables among thisunbiased sample. Our results point out the biased nature towards hottemperatures of earlier, ground-based surveys of these variables. Thecoolest star among our sample has an effective temperature only slightlyhotter than 6 000 K. For most of the 14 new gamma Doradus stars, we areable to detect more than one period in the Hipparcos light curve. Themultiperiodicity points towards the presence of high-order g-modes. Inview of the lack of a pulsation mechanism for these objects, wedetermine their position in the HR diagram with respect to the deltaScuti stars.

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Cennet Kusu
Sað Açýklýk:15h24m32.47s
Yükselim:-80°26'26.3"
Görünürdeki Parlaklýk:8.09
Uzaklýk:237.53 parsek
özdevim Sað Açýklýk:-15.7
özdevim Yükselim:-24.6
B-T magnitude:8.536
V-T magnitude:8.127

Kataloglar ve belirtme:
Özgün isimleriOP Aps
HD 1989HD 135383
TYCHO-2 2000TYC 9437-845-1
USNO-A2.0USNO-A2 0075-04818049
HIPHIP 75420

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