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| Paper: |
The STELLA Open Cluster Survey – Rotational Evolution of Low-mass Stars: a Status Report |
| Volume: |
448, 16th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun |
| Page: |
863 |
| Authors: |
Fügner, D.; Granzer, T.; Strassmeier, K. G. |
| Abstract: |
Our study targets on measuring the rotational periods and absolute
parameters of a well-selected sample of cool cluster stars. If an
empirical law between rotational period, stellar age, and mass could
be established it would provide valuable boundary conditions for
evolutionary models. Current models predict a measurable difference
of the rotational period between a solidly rotating and a
differentially rotating star, and this could be tested. Our
time-series observations are made in the Sloan r bandpass. Using
image-stacking, we intend to boost the S/N to more than 500:1 even for
the (early) M dwarfs in the fields. For calculations of stellar
properties, like age, metallicity, gravity and surface temperature,
we use the Strømgren system with few very deep exposures. In this
paper, we present the survey outline, the instruments and the first
steps already undertaken. |
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