Imaging rapid rotators with the PAVO beam combiner at CHARA

Vicente Maestro*, Yitping Kok, Daniel Huber, Michael J. Ireland, Peter G. Tuthill, Tim White, Gail Schaefer, Theo A. Ten Brummelaar, Harold A. McAlister, Nils Turnere, Christopher D. Farrington, P. J. Goldfinger

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

5 Citations (Scopus)
19 Downloads (Pure)


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 languageEnglish
Title of host publicationOptical and Infrared Interferometry III
EditorsFrançoise Delplancke, Jayadev K. Rajagopal, Fabien Malbet
Place of PublicationBellingham, Washington
Number of pages15
ISBN (Print)9780819491466
Publication statusPublished - 2012
EventOptical and Infrared Interferometry III - Amsterdam, Netherlands
Duration: 1 Jul 20126 Jul 2012


OtherOptical and Infrared Interferometry III


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