Speckle Observations and Orbits of Multiple Stars
نویسندگان
چکیده
منابع مشابه
Speckle interferometric observations of close binary stars
Speckle interferometric technique is employed to record a series of hundreds of short-exposure images of several close binary stars with subarcsecond separation through a narrow band filter at the Cassegrain focus of the 2.34 meter (m) Vainu Bappu telescope (VBT), situated at Vainu Bappu Observatory (VBO), Kavalur, India. The data are recorded sequentially by a Peltier-cooled intensified CCD ca...
متن کاملSpeckle Observations of Composite Spectrum Stars with Pisco
We present speckle interferometry observations of 47 composite spectrum stars obtained between 1993 and 1998 at the Pic du Midi Observatory with the PISCO speckle camera. 76% of over 150 independent 10 minute sequences of observations led to a companion detection. Binary component angular separations ranged from 0>05 to 1>2. We also obtained a series of 23 measurements of an additional nine clo...
متن کاملSpeckle Observations of Binary Stars with the Wiyn Telescope. I. Measures during 19971
Two hundred seventy-seven position angle and separation measures of 154 double stars are presented. Three of the systems were previously unknown to be double, and 16 other systems were discovered earlier this decade by the Hipparcos satellite. Measures are derived from speckle observations taken with the Wisconsin-Indiana-Yale-NOAO (WIYN) 3.5 m telescope located at Kitt Peak, Arizona. Speckle i...
متن کاملCcd Speckle Observations of Binary Stars from the Southern Hemisphere. Iii. Differential Photometry
Two hundred seventy-two magnitude di†erence measures of 135 double star systems are presented. The results are derived from speckle observations using the Bessel V and R passbands and a fast readout CCD camera. Observations were taken at two 60 cm telescopes, namely the Helen Sawyer Hogg Telescope, formerly at Las Campanas, Chile, and the Lowell-Tololo Telescope at the Cerro Tololo InterAmerica...
متن کاملLyrae stars : Kinematics , orbits and z - distribution
RR Lyrae stars in the Milky Way are good tracers to study the kinematic behaviour and spatial distribution of older stellar populations. A recently established well documented sample of 217 RR Lyr stars with V < 12.5 mag, for which accurate distances and radial velocities as well as proper motions from the Hipparcos and Tycho-2 catalogues are available, has been used to reinvestigate these stru...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 2019
ISSN: 1538-3881
DOI: 10.3847/1538-3881/ab4137