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The HIPPARCOS Catalogue
Grewing, M.; Arenou, F.; Lindegren, L. +17 more
The principal observational characteristics of the Hipparcos Catalogue, and a summary of its main astrometric and photometric properties, are presented. Median astrometric standard errors (in position, parallax, and annual proper motion) are in the range 0.7-0.9 milliarcsec (mas) for stars brighter than 9 mag at the catalogue epoch (J1991.25). The…
HIPPARCOS data on Herbig Ae/Be stars: an evolutionary scenario.
Waters, L. B. F. M.; Catala, C.; The, P. S. +4 more
Fundamental astrophysical parameters (distance, temperature, luminosity, mass, age) of a sample of 10 Herbig Ae/Be candidates and 3 non-emission line A and B stars in star forming regions were computed combining Hipparcos parallaxes with data from literature. All genuine Herbig stars in our sample are located between the birthline and the zero-age…
The HIPPARCOS catalogue as a realisation of the extragalactic reference system
Zacharias, N.; Kozhurina-Platais, V.; Hemenway, P. D. +23 more
The paper describes the methods and observations by which the Hipparcos Catalogue was linked to the International Celestial Reference System (ICRS). The contributions of several groups represented in the authorship of this paper, using a variety of techniques, were synthesised in order to determine the global orientation and rotation (spin) of the…
The TYCHO Catalogue
Makarov, V. V.; Bastian, U.; Fabricius, C. +9 more
The principal observational characteristics of the Tycho Catalogue, and a summary of its main astrometric and photometric properties, are presented. Median astrometric standard errors (in position, parallax, and annual proper motion) are typically around 7mas for stars brighter than V_T_~9mag, and approximately 25mas for V_T_~10.5mag, at the catal…
β Pictoris revisited by Hipparcos. Star properties.
Crifo, F.; Ferlet, R.; Vidal-Madjar, A. +2 more
Observations with the Hipparcos satellite allowed a new determination of the β Pictoris distance. This star is located at 19.28+/-0.19pc, a value close to the upper limit of previous evaluations. The overall consequences are briefly discussed; in particular it is concluded that in the frame of standard stellar evolution models, there is no need fo…
The HIPPARCOS mission: photometric data.
Evans, D. W.; Mignard, F.; van Leeuwen, F. +3 more
An overview of the Hipparcos and Tycho photometric data is presented, with reference to the main aspects of the data reductions and the overall quality and quantity of the results. The data have been presented in three forms: as mean values in the astrometric catalogues, as epoch photometry, and as interpreted results of the variability analysis, …
Solar-type stars with planetary companions: 51 Pegasi and 47 Ursae Majoris.
Fuhrmann, K.; Pfeiffer, M. J.; Bernkopf, J.
Accurate stellar parameters are presented for the solar-type stars 51 Peg and 47 UMa. The announcement of the detection of jovian planets around these objects has recently caused much attention to extrasolar planet research. From the analysis of high resolution spectrograms we obtain for 51 Peg: T_eff_=5793+/-70K, log(g)=4.33+/-0.1, [Fe/H]=+0.20+/…
Double star data in the HIPPARCOS Catalogue
Badiali, M.; Pannunzio, R.; Arenou, F. +12 more
The Hipparcos Catalogue contains astrometric results for 117955 catalogue entries, many of which are in reality double or multiple stars. For 17917 entries special solutions were made in order to cope with the various manifestations of multiplicity, and 6763 other entries were flagged as suspected binaries but solved as single stars. Details of th…
White dwarfs observed by the HIPPARCOS satellite.
Koester, D.; Vauclair, G.; Schmidt, H. +1 more
The HIPPARCOS satellite has measured trigonometric parallaxes for 20 white dwarfs. With the exception of one each of the spectral types DZ, DC, DB, DQ, the majority are of spectral type DA. We compare the parallaxes with the most recent ground-based determinations. From a spectroscopic analysis of new optical observations we determine atmospheric …
Identification of moving groups from a sample of B, A and F type stars.
Figueras, F.; Torra, J.; Chen, B. +1 more
An algorithm to find moving groups has been developed and applied to a sample of 1924 B, A, and F main sequence stars, basically extracted from the Hipparcos Input Catalogue. This algorithm uses a non-parametric kernel estimator to describe the stellar distribution in a 4-dimensional space of velocities and age, although it can be used to detect t…