Intrinsic colour calibration for F, G, K stars
Abstract
We derive an intrinsic colour calibration for F-K stars using broad band Johnson colours and line indices KP and HP2. Through this calibration we can determine E(B-V) of an individual star within 0.03 mag. The E(B-V) values thus derived are in excellent agreement with those derived from Strömgren photometry through the Schuster & Nissen (\cite{sch89}) calibration. The agreement is also good with the reddening maps of Burstein & Heiles (\cite{bur82}) and Schlegel et al. (\cite{sch98}), although in this case there exists a small offset of about 0.01 mag. This calibration may be applied to the large body of data of the HK survey extension which will be published in the near future.
- Publication:
-
Astronomy and Astrophysics Supplement Series
- Pub Date:
- September 2000
- DOI:
- 10.1051/aas:2000253
- arXiv:
- arXiv:astro-ph/0006433
- Bibcode:
- 2000A&AS..145..473B
- Keywords:
-
- STARS: ATMOSPHERES;
- STARS: GENERAL;
- ISM: DUST;
- EXTINCTION;
- Astrophysics
- E-Print:
- To be published in A&