# The open cluster Havlen-Moffat No. 1 revisited

@article{Vazquez2001TheOC,
title={The open cluster Havlen-Moffat No. 1 revisited},
author={Ruben Angel Vazquez and G. Baume},
journal={Astronomy and Astrophysics},
year={2001},
volume={371},
pages={908-920}
}
• Published 1 June 2001
• Physics
• Astronomy and Astrophysics
A deep CCD UBVRIphotometric survey combined with UBVRI polarimetric observations of 21 bright stars was carried out in the region of the open cluster Havlen-Moffat No. 1. Our data reveal that the extinction law in this cluster is variable and that six cluster stars show very high polarisation values (>4%), probably because of the presence of a nearby small dust cloud. The cluster is at a distance of d = 3300 pc, it is 2-4 Myr old and the initial mass function of its most massive stars (A4 > 3 1…

## Figures and Tables from this paper

Photometric study of the young open cluster NGC 3293
• Physics
• 2003
Deep and extensive CCD photometric observations at UB V(RI)CH were carried out in the area of the open cluster NGC 3293. The new data set allows to see the entire cluster sequence down to MV +4:5,
The young open cluster Markarian 50
• Physics
• 2004
We report on a deep CCD UBV(RI) C photometric survey in the region of the young open cluster Markarian 50. The new photometric data allow us to extend the cluster membership down to V 17.5, about 2
Two highly reddened young open clusters located beyond the Sagittarius arm
• Physics
• 2002
We present the results of CCD BVI Johnson-Cousins photometry down to $V \sim 19$ mag in the regions of the unstudied stellar groups Pismis 23 and BH 222, both projected close to the direction towards
Stellar populations in the Carina region: The Galactic plane at l = 291
• Physics
• 2016
Previous studies of the Carina region have revealed its complexity and richness as well as a significant number of early-type stars. In many cases, these studies only concentrated on the central
The Arches cluster revisited
• Physics
Astronomy & Astrophysics
• 2018
Context. Located within the central region of the Galaxy, the Arches cluster appears to be one of the youngest, densest, and most massive stellar aggregates within the Milky Way. As such, it has the
Unlocking Galactic Wolf–Rayet stars with Gaia DR2 – II. Cluster and association membership
• Physics
• 2020
Galactic Wolf-Rayet (WR) star membership of star forming regions can be used to constrain the formation environments of massive stars. Here, we utilise $\textit{Gaia}$ DR2 parallaxes and proper
Spatial distribution of Galactic Wolf-Rayet stars and implications for the global population
• Physics
• 2015
We construct revised near-infrared absolute magnitude calibrations for 126 Galactic Wolf-Rayet (WR) stars at known distances, based in part upon recent large scale spectroscopic surveys. Application
Fundamental parameters of the massive eclipsing binary HM1 8
We present a comprehensive study of the massive binary system HM1 8, based on multi-epoch high-resolution spectroscopy, V-band photometry, and archival X-ray data. Spectra from the OWN Survey, a
X-ray properties of the young open clusters HM1 and IC 2944/2948
• Physics
• 2013
Using XMM-Newton data, we study for the first time the X-ray emission of HM1 and IC 2944/2948. Low-mass, pre-main-sequence objects with an age of a few Myr are detected, as well as a few background
A Very Large Array 3.6 Centimeter Continuum Survey of Galactic Wolf-Rayet Stars
• Physics
• 2004
We report the results of a survey of radio continuum emission of Galactic Wolf-Rayet (WR) stars north of delta=-46°. The observations were obtained at 8.46 GHz (3.6 cm) using the Very Large Array,

## References

SHOWING 1-10 OF 25 REFERENCES
UBVRI imaging photometry of the open cluster Cr 272
• Physics
• 1997
We present an extensive CCD UBVRI (Cousins system) photometric survey in the region of the open cluster Collinder 272. Our data analysis conrms that the cluster is situated in the outer border of
The Highly Polarized Open Cluster Trumpler 27
We have carried out multicolor linear polarimetry (UBVRI) of the brightest stars in the area of the open cluster Trumpler 27. Our data show a high level of polarization in the stellar light with a
Mass and age distributions of stars in young open clusters
• Physics
• 1986
Mass and age distributions of stars, based on homogeneous photoelectric UBV data and reliable cluster membership, are studied in 11 young open clusters. Stellar masses and ages are determined by
Polarimetry of the Highly Reddened Open Clusters HOGG 15 and Lyngå 14
• Physics
• 1998
We present UBVRI polarimetric observations of stars belonging to the highly reddened open clusters Hogg 15 and Lynga 14. The wavelength of maximum polarization is computed and then analyzed in the
Observations of grain and magnetic field properties of the R Coronae Australis dark cloud.
• Physics
• 1981
We present the first comprehensive polarimetric study of grains and magnetic field in a massive dark could, R Coronae Australis. By combining photometric and spectroscopic data with multicolar
Erratum: The OB Zoo: A Digital Atlas of Peculiar Spectra
• Physics
• 2000
A digital atlas of 20 high-luminosity, peculiar OB spectra in the 3800-4900 A range is presented. The atlas is organized and discussed in terms of the following four categories: WN-A or WNL stars, OB
The Initial Mass Function and Massive Star Evolution in the OB Associations of the Northern Milky Way
• Physics
• 1995
We investigate the massive star content of Milky Way clusters and OB associations in order to answer three questions: (1) How coeval is star formation? (2) How constant is the initial mass function
Model atmospheres for G, F, A, B, and O stars
A grid of LTE model atmospheres is presented for effective temperatures ranging from 5500 to 50,000 K, for gravities from the main sequence down to the radiation pressure limit, for abundances solar,
Color excesses, intrinsic colors, and absolute magnitudes of Galactic and Large Magellanic Cloud Wolf-Rayet stars
• Physics
• 1990
A new method of determining the color excesses of WR stars in the Galaxy and the LMC has been developed and is used to determine the excesses for 44 Galactic and 32 LMC WR stars. The excesses are
DAOPHOT: A Computer Program for Crowded-Field Stellar Photometry
The tasks of the DAOPHOT program, developed to exploit the capability of photometrically linear image detectors to perform stellar photometry in crowded fields, are discussed. Raw CCD images are