Lyngå 1, A Small Open Cluster Containing a Red-Supergiant Member

Details Lyngå 1, A Small Open Cluster Containing a Red-Supergiant Member Lyngå 1, A Small Open Cluster Containing a Red-Supergiant Member

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003rmxaa..39...89v&link_type=abstract

Revista Mexicana de Astronomía y Astrofísica Vol. 39, pp. 89-105 (2003) (http://www.astroscu.unam.mx/~rmaa/)

Astronomy and Astrophysics

Astronomy

1

Open Clusters And Associations: Individual (Lyngå 1), Stars: Mass Function, Spectral Classification, Stars: Polarization

Scientific paper

We present CCD {UBV}RI} (Cousins system) photometric observations complemented with spectroscopic and polarimetric observations that were carried out in the open cluster Lyngå 1. Our data indicate that the cluster reddening is E(B-V)= 0.45+/-0.03, the ratio A[V]/E(B-V)= R suggests that the extinction law may be slightly anomalous ( R ≈ 3.5) and that the cluster distance modulus is V0 - M[V] = 11.40+/-0.2. The age of Lyngå 1 is between 100 and 125 Myr according to a fitting of theoretical isochrones, and the slope of its mass spectrum is x ≈ 1.7. The brightest red star in the field is a cluster member of spectral type K2 II-Ib.

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