Accession Number:

ADA595104

Title:

Navy Precision Optical Interferometer Measurements of 10 Stellar Oscillators

Descriptive Note:

Journal article

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC REMOTE SENSING DIV

Report Date:

2014-02-01

Pagination or Media Count:

9.0

Abstract:

Using the Navy Precision Optical Interferometer,wemeasured the angular diameters of 10 stars that have previously measured solar-like oscillations. Our sample covered a range of evolutionary stages but focused on evolved subgiant and giant stars.We combined our angular diameters with Hipparcos parallaxes to determine the stars physical radii, and used photometry from the literature to calculate their bolometric fluxes, luminosities, and effective temperatures. We then used our results to test the scaling relations used by asteroseismology groups to calculate radii and found good agreement between the radii measured here and the radii predicted by stellar oscillation studies. The precision of the relations is not as well constrained for giant stars as it is for less evolved stars.

Subject Categories:

  • Electrical and Electronic Equipment
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE