Interferometric Studies of Red Giants with MAPPIT

Details Interferometric Studies of Red Giants with MAPPIT Interferometric Studies of Red Giants with MAPPIT

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002mst..........1i&link_type=abstract

Master's Thesis, University of Sydney, 2002

Physics

Interferometry, Aat

Scientific paper

Powerful new tools for the analysis of wavelength-dispersed aperture masking data are presented, as applied to the MAPPIT instrument of the 3.9 m Anglo-Australia Telescope. By using both baseline and wavelength bootstrapping simultaneously, solutions were found for the phase of wavefronts degraded by atmospheric and instrumental effects. This allowed coherent processing of many data sets, greatly improving signal-to-noise both at the longest baselines for well resolved objects, and at all baselines in for data in TiO absorption bands.
Using this new techniques, as well as power spectrum-based techniques, wavelength-dependent diameters are found in the range 650-950 nm for the following stars: R Carinae, R Leonis, omicron Ceti, R Hydrae, W Hydrae, R Doradus, L2 Puppis, alpha Orionis, gamma Crucis, eta Carinae and VY Canis Majoris. All the Mira-like stars showed greater than 50% variation in diameter over the available wavelength range. L2 Puppis, a semi-regular variable resolved for the first time, showed a variation in diameter consistent with scattering by a recently ejected shell of dust.

Affiliated with

Also associated with

No associations

Rating

Interferometric Studies of Red Giants with MAPPIT does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Interferometric Studies of Red Giants with MAPPIT, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interferometric Studies of Red Giants with MAPPIT will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1199454