| Issue |
Astron. Astrophys. Suppl. Ser.
Volume 144, Number 3, June II 2000
|
|
|---|---|---|
| Page(s) | 451 - 456 | |
| DOI | https://doi.org/10.1051/aas:2000193 | |
| Published online | 15 June 2000 | |
Spectroscopy and BVIC photometry of the young open cluster NGC 6604*
1
Osservatorio Astrofisico del Dipartimento di Astronomia, Università di Padova, I-36012 Asiago (VI), Italy
2
Osservatorio Astronomico di Padova, Sede di Asiago, I-36012 Asiago (VI), Italy
3
University of Ljubljana, Department of Physics, Jadranska 19, 1000 Ljubljana, Slovenia
Send offprint request to: R. Barbon, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Received:
16
November
1999
Accepted:
21
March
2000
Abstract
BVIC photometry and classification spectroscopy is presented
for the young open cluster NGC 6604. Additional Echelle spectroscopy of the
brightest members is used to check the reddening against the interstellar
NaI and KI absorption lines, to measure the cluster radial velocity and to
derive the individual rotational velocities. We obtain 1.7 kpc as the
cluster distance, an age of 
years and a reddening
EB-V= 1.02 (
from three independent methods). Pre-ZAMS
objects are apparently not detected over the 
= 8.5 mag
explored range. The cluster radial velocity is in agreement with the Hron (1987) model for the Galaxy disk rotation.
Key words: open clusters: general / open clusters: individual (NGC 6604)
Based on observations secured with the telescopes of the South African Astronomical Observatory (SAAO) and those of the Padova and Asiago Astronomical Observatories.
© European Southern Observatory (ESO), 2000