Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006rmxac..26..179b&link_type=abstract
XI IAU Regional Latin American Meeting of Astronomy (Eds. L. Infante & M. Rubio) Revista Mexicana de Astronomía y Astrofísica (S
Astronomy and Astrophysics
Astronomy
Scientific paper
Based on a deep CCD (UBV(RI) [C]) photometric survey and Two-Micron All-Sky-Survey (2MASS) photometry data we derived the main parameters of the open cluster NGC 2401. We found this cluster is located at 6.3 +/- 0.5 kpc (V_0 - M_V = 14.0+/-0.2) from the Sun and is 25 Myr old. That allows us to identify NGC 2401 as a member of the young population belonging to the extension of the Norma - Cygnus spiral- arm over the Third Galactic Quadrant. We additionally constructed the cluster luminosity function down to V ≈ 22 and also the cluster initial mass function for all stars with masses above M ≈ 1-2 M_V in which case we found a slope x ≈ 1.8+/-0.2. A spectroscopic study of the emission star LSS 440 that lies is the cluster area revealed it is a B0Ve star. Its parameters and probable connection with NGC 2401 are also discussed.
Baume Gustavo
Carraro Giovanni
Moitinho Andre
Solivella Gladys
Vázquez Ricardo A.
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