Lingå 11: an unstudied open cluster in the inner Galactic disk

PIATTI, ANDRÉS E.; CLARIA OLMEDO, JUAN JOSÉ; AHUMADA, A.V.

Bol. Asociación Argentina de Astronomía

Año: 2005 vol. 48 p. 181 - 184

The field of the open cluster Lynga 11 is investigated by means of CCD BVI_KC photometry. This previously unstudied object appears to be rich, highly absorbed, moderately young and probably of solar metallicity. An angular radius of 4.5´ +/- 0.5´ is estimated from star counts in the cluster field. Adopting the theoretical metal content Z = 0.02, which provides the best global fit, we derive an age of (630 + 70) Myr. Simultaneously, colour excesses E(B-V) = 0.70 and E(V-I) = 0.85 and an apparent distance modulus V-Mv = 14.0 are obtained. These results place Lynga 11 at a distance of (2.3 + 0.5) kpc from the Sun and 6.5 kpc from the Galactic centre. The properties of a sample of clusters aligned along the line-of-sight of Lynga 11 are examined as well.