Ten Years of Speckle Interferometry at SOAR

Ten Years of Speckle Interferometry at SOAR

Since 2007, close binary and multiple stars are observed by speckle interferometry at the 4.1 m Southern Astrophysical Research (SOAR) telescope. The HRCam instrument, observing strategy and planning, data processing and calibration methods, developed and improved during ten years, are presented her...

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Veröffentlicht in:Publications of the Astronomical Society of the Pacific 2018-03, Vol.130 (985), p.35002
1. Verfasser: Tokovinin, Andrei
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(stars:) binaries: visual
instrumentation: high angular resolution
techniques: high angular resolution
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description Since 2007, close binary and multiple stars are observed by speckle interferometry at the 4.1 m Southern Astrophysical Research (SOAR) telescope. The HRCam instrument, observing strategy and planning, data processing and calibration methods, developed and improved during ten years, are presented here in a concise way. Thousands of binary stars were measured with diffraction-limited resolution (29 mas at 540 nm wavelength) and a high accuracy reaching 1 mas; 200 new pairs or subsystems were discovered. To date, HRCam has performed over 11,000 observations with a high efficiency (up to 300 stars per night). An overview of the main results delivered by this instrument is given.
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source Jstor Complete Legacy; IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link; Alma/SFX Local Collection
subjects (stars:) binaries: visual
instrumentation: high angular resolution
techniques: high angular resolution
title Ten Years of Speckle Interferometry at SOAR
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