Capitaine, Nicole (1948-....).

Systèmes de ref́érence spatio-temporels ; Géodynamique globale et systèmes de référence : Journées 1992, Paris, 1-2 juin by Observatoire de Paris( Book )

1 edition published in 1992 in French and held by 6 WorldCat member libraries worldwide

Systèmes de référence spatio-temporels : Journées 1996, Paris, 22-23 septembre by Observatoire de Paris-Meudon( Book )

1 edition published in 1996 in French and held by 6 WorldCat member libraries worldwide

Report of the International Astronomical Union Division I Working Group on Precession and the Ecliptic by John Hilton( )

4 editions published in 2006 in English and held by 5 WorldCat member libraries worldwide

The IAU Working Group on Precession and the Equinox looked at several solutions for replacing the precession part of the IAU 2000A precession-nutation model, which is not consistent with dynamical theory. These comparisons show that the precession theory, P03, is both consistent with dynamical theory and the solution most compatible with the IAU 2000A nutation model. Thus, the working group recommends the adoption of the P03 precession theory for use with the IAU 2000A nutation. The two greatest sources of uncertainty in the precession theory are the rate of change of the Earth's dynamical flattening, Delta-J2, and the precession rates (i.e. the constants of integration used in deriving the precession). The combined uncertainties limit the accuracy in the precession theory to approximately 2 mas cent(to the minus 2nd power)

Tricentenaire de la naissance de Pierre Bouguer 1698-1998, sous le patronage de l'Académie des sciences, Paris, 16 juin 1998( Book )

1 edition published in 2001 in French and held by 4 WorldCat member libraries worldwide

Motion of celestial bodies, astrometry and astronomical reference frames by Journées Systèmes de référence spatio-temporels( Book )

1 edition published in 2000 in English and held by 4 WorldCat member libraries worldwide

Systèmes de référence spatio-temporels : Journées 1997, Prague, 22-24 septembre by Observatoire de Paris-Meudon( Book )

2 editions published between 1997 and 1998 in French and English and held by 4 WorldCat member libraries worldwide

Concepts et convention pour la rotation de la Terre et leurs applications pratiques by Journées Systèmes de référence spatio-temporels( Book )

1 edition published in 1999 in English and held by 4 WorldCat member libraries worldwide

Systèmes de référence spatio-temporels : Journées 2007, Paris, 17-19 September by Observatoire de Paris( Book )

3 editions published between 2002 and 2007 in English and held by 4 WorldCat member libraries worldwide

New challenges for reference systems and numerical standards in astronomy : Journées 2010 : Systèmes de référence spatio-temporels : Paris, 20-22 september by Journées Systèmes de référence spatio-temporels( Book )

2 editions published in 2011 in English and held by 4 WorldCat member libraries worldwide

Apport d'Hipparcos à l'étude des étoiles A du voisinage solaire : cinématique et fonction de masse initiale by Virginie Sabas( )

3 editions published between 1997 and 2019 in French and held by 4 WorldCat member libraries worldwide

The Galactic disk complexity is well traced by kinematical properties and photometrical distributions of young stars. The very peculiar kinematics of these stars brought attention since the last century (Proctor, 1869). On and after 1963, Eggen showed the existence of kinematical groups. Gomez et al. (1990) suggested that they come from starbursts. Their existence allows us to constraint the galactic mixing time. To modelize a given stars distribution one needs to know the Initial mass Function (IMF) and the Stellar Formation Rate (SFR). Until now, a Mass-Luminosity relation was needed, which is non univocal for this type of stars and therefore very uncertain. But now, for the first time, we can benefit the Hipparcos datas for these studies : the Hipparcos astrometric satellite observed 11 800 stars on the whole during 4 years. The good accuracy of positions, parallaxes and proper motions together with the completeness of data allows us to get a new insight into galactical dynamics. In this work, we use a B5-F5 stars sample with apparent magnitude V ≤ 7.5 observed by Hipparcos. We first describe the acquisition of ground-based complementary observations : radial velocities, effective temperatures, absolute magnitude and the determination of masses and ages. This sample is used to study the kinematics of the hot stars of the solar neighborhood. We confirm the existence of Eggen's groups and find a range of ages for each of them, giving hints that these groups come from successive clusters formed in one Giant Molecular Cloud. We confirm that the stars are not well mixed after about 10 galactic years. Finally, we estimate the solar motion to be of (11.5, 14.1, 8.6) km/s. in the last part, we determine the slope of the IMF between and solar mass, assuming a constant SFR. We obtain 0.95 +/- 0.17, lower than the reference values (Salpeter1955, Scalo 1986), but in good agreement with more recent determinations concerning the whole mass range