Free Access
Astron. Astrophys. Suppl. Ser.
Volume 134, Number 3, February I 1999
Page(s) 525 - 536
Published online 15 February 1999
DOI: 10.1051/aas:1999154

Astron. Astrophys. Suppl. Ser. 134, 525-536

The extremely young open cluster NGC 6611: Compiled catalogue, absorption map and the HR diagram[*]

A.N. Belikov1 - N.V. Kharchenko2 - A.E. Piskunov1 - E. Schilbach3

Send offprint request: E. Schilbach

1 - Institute of Astronomy of the Russian Acad. Sci. 48 Pyatnitskaya St., Moscow 109017, Russia
2 - Main Astronomical Observatory, Golosiiv, 252650 Kiev, Ukraine
3 - Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany

Received May 29; accepted September 18, 1998


A compiled catalogue of astrometric and photometric data for about 2200 stars down to $V=16.8^{\rm m}$ is presented. The stars are located in an area with a radius of 22.8 arcmin around the extremely young open cluster NGC 6611 with the cluster center at ($\alpha,\delta)_{2000.0}=18^{\rm h}18^{\rm m}40^{\rm s},-13^\circ 47.1'$. The catalogue is based on new reductions of positions, proper motions, and of photometric data that have been published in this region and includes, among others, Hipparcos, AC/GSC and Tautenburg Schmidt plate observations. For the membership determination, spatial and proper motion distributions of stars in the region were analysed. An extinction map of the area and the cluster color-magnitude diagram down to $M_V=+1^{\rm m}$ were constructed. The distance of NGC 6611 was determined as $2.14 \pm 0.10$ kpc.

Key words: open clusters -- HR diagram

SIMBAD Objects
Tables at the CDS

Copyright The European Southern Observatory (ESO)

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.