Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997abos.conf..719s&link_type=abstract
Conference Paper, Astronomical and Biochemical Origins and the Search for Life in the Universe, IAU Colloquium 161, Publisher: B
Astronomy and Astrophysics
Astronomy
Project Seti, Stellar Systems, Binary Stars, Radio Antennas, Signal Detection, Line Of Sight, Extraterrestrial Intelligence, Transmitters
Scientific paper
A new class of SETI targets is proposed, consisting of stellar systems whose ecliptic planes coincide with our line-of-sight. The most favorable of these systems are moderately separated, edge-on binary stars with at least one solar-type component. Such targets maximize the likelihood that a transmitting civilization's antennas are beamed in our direction, and therefore represent an improvement over current experiments by approximately 10 exp 6 per target. While few favorable systems are known, this is a consequence of historical selection effects in the observation of binaries. An estimate of their frequency shows that a thousand such systems exist within 1200 ly of the sun.
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