INVESTIGADORES
AHUMADA Andrea Veronica
artículos
Título:
IC 2395 and BH 47: Only one open cluster in the Vela constellation
Autor/es:
CLARIÁ, J. J.; LAPASSET, E.; PIATTI, A. E.; AHUMADA, A. V.
Revista:
ASTRONOMY AND ASTROPHYSICS
Editorial:
EDP SCIENCES S A
Referencias:
Lugar: Paris; Año: 2003 vol. 409 p. 541 - 551
ISSN:
0004-6361
Resumen:
We report UBV photoelectric photometry for 273 stars in the fields of
the open clusters IC 2395 and BH 47. Our postulate is that, rather than
two different clusters in this region of Vela, there is only one, which
we call IC 2395 = BH 47. The cluster is centered at about alpha =
8{h} 42fm 5, delta = -48degr 06farcm 8 (2000), its
angular diameter being ~ 19'. The analysis of the photometric data
yields 61 probable cluster members and 16 possible members. Photometric
membership probabilities show good agreement with those obtained from a
proper motion study for 21 stars in common. The reddening across the
cluster appears to be uniform, the mean E(B-V) value being 0.09 +/-
0.02. The true distance modulus is (V-MV)0 = 9.52
+/- 0.10, corresponding to a distance from the Sun of (800 +/- 40) pc
and 48 pc below the Galactic plane. The cluster age, determined by
fitting isochrones with core overshooting, turns out to be (6 +/- 2)
Myr. There is a strong likelihood that IC 2395 = BH 47 is physically
connected to the Vela OB1C association.