Zenodo.org will be unavailable for 2 hours on September 29th from 06:00-08:00 UTC. See announcement.

Poster Open Access

Accurate and Precise Effective Temperatures for Cool Stars

Nicola J. Miller; Pierre F. L. Maxted

There is an urgent need for benchmark stars with effective temperature measurements that are both accurate and precise. There are few standard stars currently available with effective temperature measurements that meet the required accuracy for calibrating temperature indicators for cool dwarf stars (+/- 50K or better). We present a new method that uses high-precision measurements of eclipsing binary stars, Gaia parallaxes and multi-wavelength photometry to obtain very accurate fundamental effective temperatures. These measurements can be used to establish a set of benchmark stars. Initial results for the F7V+K0IV binary AI Phoenicis are promising: $T_1 = 6199 \pm 22$ K and $T_2 = 5094 \pm 16$ K (Miller, Maxted & Smalley, 2020). We have now applied the method to the newly identified system ASAS J051753-5406.0 (CPD-54 810) and present our preliminary results.

Files (1.3 MB)
Name Size
933.1 kB Download
372.2 kB Download
  • Silva Aguirre, Victor et al (2017) arXiv:1611.08776

  • Heiter, U et al (2015) arXiv:1506.06095

  • Holmberg, J et al (2009) arXiv:0811.3982

  • Ratajczak, M et al (2021) arXiv:2011.14683

  • Miller, N et al (2020) arXiv:2004.04568

All versions This version
Views 220220
Downloads 170170
Data volume 142.9 MB142.9 MB
Unique views 200200
Unique downloads 159159


Cite as