SIMBAD references

1994A&A...289..756N - Astronomy and Astrophysics, volume 289, 756-762 (1994/9-3)

The use of the (B-I) color index and applications of the (B-I) versus (B-V) relationship I. Open clusters.

NATALI F., NATALI G., POMPEI E. and PEDICHINI F.

Abstract (from CDS):

We present an analysis derived from the UBVRI photometry of 12 open clusters, that shows a linear relationship between the color indices (B-I) and (B-V). Due to this characteristic the (B-I) color index is a more sensitive estimator of the effective stellar temperatures with respect to the widely used (B-V), and it is less affected by the absorption bands of H2 molecules in low mass stars. Furthermore, from the two colors (B-I) vs. (B-V) diagrams we derive a new method yielding a parameter that estimates the interstellar reddening for each cluster.

Abstract Copyright: ∼

Journal keyword(s): open clusters and associations: general - dust: extinction - HR diagram - stars: low mass

Simbad objects: 14

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