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Target Selection for SETI. I. A Catalog of Nearby Habitable Stellar Systems

Turnbull, Margaret C.; Tarter, Jill C.

In preparation for the advent of the Allen Telescope Array, the SETI Institute has the need to greatly expand its former list of ~2000 targets compiled for Project Phoenix, a search for extraterrestrial technological signals. In this paper we present a catalog of stellar systems that are potentially habitable to complex life forms (including intel…

Target Selection for SETI. II. Tycho-2 Dwarfs, Old Open Clusters, and the Nearest 100 Stars

Turnbull, Margaret C.; Tarter, Jill C.

We present the full target list and prioritization algorithm developed for use by the microwave search for technological signals at the SETI Institute. We have included the Catalog of Nearby Habitable Stellar Systems (HabCat, described in Paper I), all of the nearest 100 stars and 14 old open clusters. This is further augmented by a subset of the …

The Nature of Overluminous F Stars Observed in a Radial-Velocity Survey

Suchkov, A. A.; Griffin, R. F.

We have conducted a radial-velocity survey of bright (V<9), overluminous, F stars within 80 pc. The criterion of overluminosity is ΔM_c0=M_c0-M_V>=0.5, where M_V is the absolute magnitude based on the Hipparcos parallax and M_c0 is the absolute magnitude from …

Speckle Observations of Composite Spectrum Stars. II. Differential Photometry of the Binary Components

Scardia, M.; Ginestet, N.; Prieur, J. -L. +6 more

Multicolor differential photometry measurements of the two components of 18 close binary stars, mostly composite spectrum stars, are presented. They are based on observations made at Pic du Midi Observatory with the speckle camera PISCO between 1993 and 1998. Optical bench experiments were also performed to assess the validity of the whole process…