| Issue |
Astron. Astrophys. Suppl. Ser.
Volume 134, Number 3, February I 1999
|
|
|---|---|---|
| Page(s) | 525 - 536 | |
| DOI | https://doi.org/10.1051/aas:1999154 | |
| Published online | 15 February 1999 | |
The extremely young open cluster NGC 6611: Compiled catalogue, absorption map and the HR diagram*
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 e-mail: eschilbach@aip.de
Send offprint request to: E. Schilbach
Received:
29
May
1998
Accepted:
18
September
1998
A compiled catalogue of astrometric and photometric data for about
2200 stars down to 
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
(
. 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 
were constructed. The distance of
NGC 6611 was determined as 
kpc.
Key words: open clusters / HR diagram
© European Southern Observatory (ESO), 1999