Gaulme, P.; Schmider, F. X.; Gay, J.; Jacob, C.; Alvarez, M.; Reyes-Ruiz, M.; Belmonte, J. A.; Fossat, E.; Jeanneaux, F.; Valtier, J.-C.
Bibliographical reference
Astronomy and Astrophysics, Volume 490, Issue 2, 2008, pp.859-871
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11
2008
Journal
Citations
11
Refereed citations
7
Description
Aims: SYMPA is the first instrument dedicated to the observation of free
oscillations of Jupiter. Its principles and theoretical performance have
been presented in Paper I. This second paper describes the data
processing method, the real instrumental performance and presents the
first results of a Jovian observation run, lead in 2005 at Teide
Observatory. Methods: SYMPA is a Fourier transform spectrometer
which works at a fixed optical path difference. It produces Doppler
shift maps of the observed object. The velocity amplitude of Jupiter's
oscillations is expected to be below 60 cm s-1. Results: Despite light technical defects, the instrument was
demonstrated to work correctly, being limited only by photon noise. A
noise level of about 12 cm s-1 was reached on a 10-night
observation run, with 21% duty cycle, which is 5 time better than
similar previous observations. However, no signal from Jupiter is
clearly highlighted.
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The principal objectives of this project are: 1) to study the structure and dynamics of the solar interior, 2) to extend this study to other stars, 3) to search for extrasolar planets using photometric methods (primarily by transits of their host stars) and their characterization (using radial velocity information) and 4) the study of the planetary
Savita
Mathur