Abstract
Rotation plays a crucial role in the shaping and evolution of a star. Widely incorporated into early and late-stage stellar models, rotational effects remain poorly understood in main-sequence stars, mainly due to the absence of observations challenging contemporary models. The Precision Astronomical Visible Observations (PAVO) instrument, located at the Center for High Angular Resolution Astronomy (CHARA) array, provides the highest angular resolution yet achieved ( 0.3 mas) for stars V=8 magnitude and brighter. We describe instrumental techniques and advances implemented in PAVO@CHARA to observe heavily resolved targets and yield well calibrated closure phases which are key milestones on the pathway to delivery of the first-ever image in the visible of fast-rotating main-sequence star.
Original language | English |
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Title of host publication | Optical and Infrared Interferometry III |
Editors | Françoise Delplancke, Jayadev K. Rajagopal, Fabien Malbet |
Place of Publication | Bellingham, Washington |
Publisher | SPIE |
Pages | 1-15 |
Number of pages | 15 |
Volume | 8445 |
ISBN (Print) | 9780819491466 |
DOIs | |
Publication status | Published - 2012 |
Event | Optical and Infrared Interferometry III - Amsterdam, Netherlands Duration: 1 Jul 2012 → 6 Jul 2012 |
Other
Other | Optical and Infrared Interferometry III |
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Country/Territory | Netherlands |
City | Amsterdam |
Period | 1/07/12 → 6/07/12 |