2016/08/25 by Ellyn K. Baines, Michaela P. Döllinger, M. P. Döllinger +7
Physics and Astronomy · #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Astrophysics and Star Formation Studies #Effective temperature #Galaxy #Giant star #Interferometry #Luminosity #Metallicity #Physics #RADIUS #Spectroscopy #Stars #Stellar, planetary, and galactic studies #Surface gravity #astro-ph.SR
paper · pdf · doi:10.3847/0004-6256/152/3/66
4 tables, 4 figures
openalex publication_date 2016/08/25 · arxiv created 2016/09/08 · arxiv updated 2016/09/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
ABSTRACT We present spectroscopic and interferometric measurements for a sample of nine K giant stars. These targets are of particular interest because they are slated for stellar oscillation observations. Our improved parameters will directly translate into reduced errors in the final masses for these stars when interferometric radii and asteroseismic densities are combined. Here, we determine each star’s limb-darkened angular diameter, physical radius, luminosity, bolometric flux, effective temperature, surface gravity, metallicity, and mass. When we compare our interferometric and spectroscopic results, we find no systematic offsets in the diameters and the values generally agree within the errors. Our interferometric temperatures for seven of the nine stars are hotter than those determined from spectroscopy with an average difference of about 380 K.