New fundamental parameters for the inner disk open cluster Lyngå 11

Details New fundamental parameters for the inner disk open cluster Lyngå 11 New fundamental parameters for the inner disk open cluster Lyngå 11

Jan 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006newa...11..262p&link_type=abstract

New Astronomy, Volume 11, Issue 4, p. 262-272.

Astronomy and Astrophysics

Astronomy

4

Scientific paper

We have obtained CCD BVIKC photometry down to V ˜ 21.5 for the open cluster Lyngå 11 and its surrounding field. This previously unstudied object appears to be rich and highly absorbed. A cluster angular radius of 4.5′ ± 0.5′, equivalent to (3.0 ± 0.3) pc, is estimated from star counts in 100-pixel a side boxes distributed throughout the whole observed field. Our analysis suggests that Lyngå 11 is moderately young and probably of solar metallicity. 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 Lyngå 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 Lyngå 11 are examined as well.

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