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eBook High Precision Infra-Red Stellar Interferometry download

by Benjamin F. Lane

eBook High Precision Infra-Red Stellar Interferometry download ISBN: 1581122004
Author: Benjamin F. Lane
Publisher: Dissertation.Com. (October 15, 2003)
Language: English
Pages: 172
ePub: 1108 kb
Fb2: 1718 kb
Rating: 4.6
Other formats: lrf txt lrf lit
Category: Math Sciences

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High-Precision Infra-Red Stellar Interferometry. The low infrared background and high atmospheric transparency are the principal advantages of Antarctic Plateau sites for astronomy

High-Precision Infra-Red Stellar Interferometry. Cite this publication. The low infrared background and high atmospheric transparency are the principal advantages of Antarctic Plateau sites for astronomy. However, the poor seeing (between 1 and 3 as) negates much of the sensitivity improvements that the Antarctic atmosphere offers, compared to mid-latitude sites such as Mauna Kea or Cerro Paranal.

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In this paper we report the results of a fiber optics beam-combiner at the focus of the IOTA interferometer. In: Paresce F. (eds) Science with the VLT Interferometer. ESO Astrophysics Symposia (European Southern Observatory). Springer, Berlin, Heidelberg.

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High-precision interferometric techniques under development for extrasolar planet detection and characterization (differential phase, nulling and astrometry) all benefit substantially from the slow, low-altitude turbulence, low water vapor content, and low temperature found on the Antarctic plateau.

PHASE-REFERENCED STELLAR INTERFEROMETRY AT THE PALOMAR TESTBED INTERFEROMETER Benjamin F. Lane Division of Geological and Planetary Sciences, 150-21, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125;. and M. Mark Colavita Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109; (for the PTI Collaboration) Received 2002 August 29; accepted 2002 December 3.

Energy Express Engineering and Laboratory Notes. Hsien-kai Hsiao, K. A. Winick, John D. Monnier, and Jean-Philippe Berger, "An infrared integrated optic astronomical beam combiner for stellar interferometry at 3-4 μm," Opt. Express 17, 18489-18500 (2009).

This dissertation describes work performed at the Palomar Testbed Interferometer (PTI) during 1998-2002. Using PTI, we developed a method to measure stellar angular diameters in the 1-3 milli-arcsecond range with a precision of better than 5%. Such diameter measurements were used to measure the mass-radius relations of several lower main sequence stars and hence verify model predictions for these stars. In addition, by measuring the changes in Cepheid angular diameters during the pulsational cycle and applying a Baade-Wesselink analysis we are able to derive the distances to two galactic Cepheids (h Aql & z Gem) with a precision of ~10%; such distance determinations provide an independent calibration of the Cepheid period-luminosity relations that underpin current estimates of cosmic distance scales. Second, we used PTI and the adaptive optics facility at the Keck Telescope on Mauna Kea to resolve the low mass binary systems BY Dra and GJ 569B, resulting in dynamical mass determinations for these systems. GJ 569B most likely contains at least one sub-stellar component, and as such represents the first dynamical mass determination of a brown dwarf. Finally, a new observing technique, dual star phase referencing, was developed and demonstrated at PTI. Phase referencing allows interferometric observations of stars previously too faint to observe, and is a prerequisite for large-scale interferometric astrometry programs such as the one planned for the Keck Interferometer; interferometric astrometry is a promising technique for the study of extra-solar planetary systems, particularly ones with long-period planets.