Recent highlights from The CHARA Array

2020 ◽  
Author(s):  
Gail H. Schaefer ◽  
Theo A. ten Brummelaar ◽  
Douglas R. Gies ◽  
Matthew D. Anderson ◽  
Christopher D. Farrington ◽  
...  
Keyword(s):  
Chara Array

scholarly journals VEGA: Visible spEctroGraph and polArimeter for the CHARA array: principle and performance

2009 ◽  
Vol 508 (2) ◽  
pp. 1073-1083 ◽  
Author(s):  
D. Mourard ◽  
J. M. Clausse ◽  
A. Marcotto ◽  
K. Perraut ◽  
I. Tallon-Bosc ◽  
...  
Keyword(s):  
Chara Array ◽  
And Performance

scholarly journals PTPS Candidate Exoplanet Host Star Radii Determination with CHARA Array

2011 ◽  
Vol 7 (S282) ◽  
pp. 203-204
Author(s):  
Paweł Zieliński ◽  
Martin Vaňko ◽  
Ellyn Baines ◽  
Andrzej Niedzielski ◽  
Aleksander Wolszczan
Keyword(s):  
Effective Temperature ◽  
Critical Parameter ◽  
Spectroscopic Analysis ◽  
Evolutionary Model ◽  
Stellar Mass ◽  
Surface Temperatures ◽  
Penn State ◽  
Chara Array ◽  
Model Dependency

AbstractWe propose to measure the radii of the Penn State - Toruń Planet Search (PTPS) exoplanet host star candidates using the CHARA Array. Stellar radii estimated from spectroscopic analysis are usually inaccurate due to indirect nature of the method and strong evolutionary model dependency. Also, the so-called degeneracy of stellar evolutionary tracks due to convergence of many tracks in the giant branch decreases the precision of such estimates. However, the radius of a star is a critical parameter for the calculation of stellar luminosity and mass, which are often not well known especially for giants. With well determined effective temperature (from spectroscopy) and radius, the luminosity may be calculated precisely. In turn also stellar mass may be estimated much more precisely. Therefore, direct radii measurements increase precision in the determination of planetary candidates masses and the surface temperatures of the planets.

Making the CHARA Array, Part I: founding CHARA, the audacity of hope

2014 ◽  
Author(s):  
Harold A. McAlister ◽  
Theo A. ten Brummelaar ◽  
Stephen T. Ridgway
Keyword(s):  
Chara Array ◽  
Audacity Of Hope

scholarly journals Separated Fringe Packet Observations with the CHARA Array. III. The Very High-eccentricity Binary HR 7345

2018 ◽  
Vol 156 (4) ◽  
pp. 144
Author(s):  
C. D. Farrington ◽  
Francis C. Fekel ◽  
G. H. Schaefer ◽  
T. A. ten Brummelaar
Keyword(s):  
High Eccentricity ◽  
Chara Array ◽  
Very High

Remote operation of the CHARA Array via the Internet

2003 ◽  
Author(s):  
Thomas Fallon ◽  
Harold A. McAlister ◽  
Theo A. ten Brummelaar
Keyword(s):  
The Internet ◽  
Remote Operation ◽  
Chara Array

The CHARA array adaptive optics program

2018 ◽  
Author(s):  
Theo A. ten Brummelaar ◽  
Judit Sturmann ◽  
Laszlo Sturmann ◽  
Matthew D. Anderson ◽  
Nils H. Turner ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Chara Array

Recent technical and scientific highlights from the CHARA array

2018 ◽  
Author(s):  
Douglas R. Gies ◽  
Theo A. ten Brummelaar ◽  
Matthew D. Anderson ◽  
Christopher D. Farrington ◽  
Steven Golden ◽  
...  
Keyword(s):  
Chara Array

Spectroscopic binary stars and the CHARA array

2003 ◽  
Author(s):  
Harold A. McAlister ◽  
Theo A. ten Brummelaar ◽  
William G. Bagnuolo, Jr. ◽  
David H. Berger ◽  
Thomas Fallon ◽  
...  
Keyword(s):  
Binary Stars ◽  
Spectroscopic Binary ◽  
Chara Array

scholarly journals Visual Orbits of Spectroscopic Binaries with the CHARA Array. III. HD 8374 and HD 24546

2020 ◽  
Vol 160 (2) ◽  
pp. 58
Author(s):  
Kathryn V. Lester ◽  
Francis C. Fekel ◽  
Matthew Muterspaugh ◽  
Douglas R. Gies ◽  
Gail H. Schaefer ◽  
...  
Keyword(s):  
Spectroscopic Binaries ◽  
Chara Array
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