Low-Resolution Spectroscopy and uvby-β Photometry of Selected Stars in Haffner 18

Details Low-Resolution Spectroscopy and uvby-β Photometry of Selected Stars in Haffner 18 Low-Resolution Spectroscopy and uvby-β Photometry of Selected Stars in Haffner 18

Apr 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005rmxaa..41...69m&link_type=abstract

Revista Mexicana de Astronomía y Astrofísica Vol. 41, pp. 69-76 (2005) (http://www.astroscu.unam.mx/~rmaa/)

Astronomy and Astrophysics

Astronomy

1

Open Clusters: Physical Parameters, Stars: O And Early B Stars, Stars: Open Clusters (Haffner 18)

Scientific paper

We present MK spectral types of a sample of selected (bright) stars associated with the galactic cluster Haffner 18 in Puppis. They were obtained from low-resolution (λ / Δ λ = 1720) spectra by H α slit spectroscopy. Some of the selected stars were also observed photoelectrically in the uvby- β system. Our spectroscopic data show that over 1/4 of the estimated 50 star members of the cluster are O and early B stars. We give MK spectral types and discuss the individual stars observed. Finally, based on these spectroscopic results, on our photometry, and on published data we briefly reinspect the physical parameters of the cluster.

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