Researches in Stellar Parallax 1

Stellar Absolute Magnitudes via the Statistical Parallax Method

I review statistical parallax absolute magnitude determinations which employ data from the Hipparcos satellite for RR Lyrae and Cepheid variables, and for several other stellar classes. Five groups have studied the RR Lyrae stars, and the results are reassuringly consistent: MV (RR) = 0.77 ± 0.13 mag at [Fe/H] = –1.6 dex. Extensive Monte Carlo simulations showed that systematic errors are small...

Relativistic stellar aberration for the Space Interferometry Mission: parallax analysis

This paper is a continuation of our previous analysis (i.e. Turyshev 2002a, 2002b) of the relativistic stellar aberration requirements for the Space Interferometry Mission (SIM). Here we have considered a problem of how the expected astrometric accuracy of parallax determination will constrain the accuracy of the spacecraft navigation. We show that effect of the spacecraft’s navigational errors...

Primitive Parallax and Parallax Primitives

This paper describes an implementation of parallax depth perception designed to be a contributing unit to a distributed perceptual intelligence. The work was done in the context of the Cog project, a large-scale eeort to develop human or at least infant intelligence from the bottom up. Our implementation uses fast-approximation \good enough" region mapping and relevant motion detection over mul...

Recent Researches in Metallurgical

MODEST-1: Integrating Stellar Evolution and Stellar Dynamics

Piet Hut ∗ a , Michael M. Shara b , Sverre J. Aarseth c , Ralf S. Klessen d , James C. Lombardi Jr. e , Junichiro Makino f , Steve McMillan g , Onno R. Pols h , Peter J. Teuben i , Ronald F. Webbink j Institute for Advanced Study, Einstein Drive, Princeton, NJ 08540, USA Department of Astrophysics, American Museum of Natural History, New York, NY 10024, USA Institute of Astronomy, University of...