Speckle observations of double stars with PISCO at Pic du Midi: Measurements in 1998

Authors
Scardia, M Prieur, JL Aristidi, E Koechlin, L
Citation
M. Scardia et al., Speckle observations of double stars with PISCO at Pic du Midi: Measurements in 1998, ASTROPH J S, 131(2), 2000, pp. 561-569
Citations number
19
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
ISSN journal
00670049 → ACNP
Volume
131
Issue
2
Year of publication
2000
Pages
561 - 569
Database
ISI
SICI code
0067-0049(200012)131:2<561:SOODSW>2.0.ZU;2-9
Abstract
We present astrometric measurements of binary stars based on speckle observ ations of 164 independent sequences of observations (similar to 10(4) frame s each) made with the PISCO speckle camera at Pic du Midi. These measuremen ts concern 147 objects, of which 134 were found to be double with a separat ion in the range 0 " .1-1 " .10. These objects were mainly selected among g rade 3 orbits to improve the accuracy of their orbits and to constrain thei r masses. We discovered the binarity of 59 Aql with an angular separation o f 0 " .09 +/- 0".01.