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Title: Navy precision optical interferometer measurements of 10 stellar oscillators

Using the Navy Precision Optical Interferometer, we measured 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.
Authors:
; ;  [1] ; ;  [2] ;  [3]
  1. Remote Sensing Division, Naval Research Laboratory, 4555 Overlook Avenue SW, Washington, DC 20375 (United States)
  2. U.S. Naval Observatory, Flagstaff Station, AZ 86001 (United States)
  3. Lowell Observatory, Flagstaff, AZ 86001 (United States)
Publication Date:
OSTI Identifier:
22348116
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 781; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ACCURACY; BOLOMETERS; GIANT STARS; INTERFEROMETERS; LUMINOSITY; OSCILLATIONS; OSCILLATORS; PHOTOMETRY; RESOLUTION; SCALING; STAR EVOLUTION