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Imaging rapid rotators with the PAVO beam combiner at CHARA

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Date

2012

Authors

Maestro, V
Kok, Y
Huber, D
Ireland, Michael
Tuthill, Peter G
White, T R
Schaefer, G H
ten Brummelaar, Theo
McAlister, H
Turner, Nils

Journal Title

Journal ISSN

Volume Title

Publisher

SPIE - The International Society for Optical Engineering

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.

Description

Keywords

Keywords: Instrumentation: interferometers; Methods:data analysis; Optical interferometry; Stars: Rotation; Techniques: high angular resolutions; Instruments; Interferometry; Stars Instrumentation: interferometers; Methods: data analysis; Optical interferometry; Stars: rotation; Techniques: high angular resolution; Techniques: interferometry

Citation

URI

http://hdl.handle.net/1885/67222

Collections

ANU Research Publications

Source

Proceedings of SPIE - The International Society for Optical Engineering

Type

Conference paper

Book Title

Entity type

Access Statement

License Rights

DOI

10.1117/12.926881

Restricted until

2037-12-31

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01_Maestro_Imaging_rapid_rotators_with_2012.pdf (1.44 MB)

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