Search Publications

Absolute magnitudes for late-type dwarf stars for Sloan photometry

Bilir, S.; Karaali, S.; Tunçel, S.

We present a new formula for absolute magnitude determination for late-type dwarf stars as a function of (g-r) and (r-i) for Sloan photometry. The absolute magnitudes estimated by this approach are brighter than those estimated by colour-magnitude diagrams, and they reduce the luminosity function rather close to the luminosity function of Hipparco…

The field of IC 2602: Strömgren-Hβ photometry approach

Kaltcheva, N.; Jaeger, S.; Kaba Bah, M. +1 more

A homogeneous data-base collating all uvbyβ photometry available at present for O-B9 stars in the field of IC 2602 is presented. The characteristics of the field are studied. Four spatially coherent groups can be distinguished. A low reddened compact group located at 156±6 pc is identified with IC 2602, followed by background layers at 546±33 pc, …