C.D.S. - SIMBAD4 rel 1.7 - 2020.10.24CEST18:04:05

1997A&AS..122..111P - Astron. Astrophys., Suppl. Ser., 122, 111-121 (1997/April-1)

Stellar contents of the open clusters Be 64 and Be 69.


Abstract (from CDS):

We present UBVRI CCD photometry for previously unstudied open clusters (Be 64 and Be 69). Photometry has also been carried out for nearby fields to correct for the effects of field stars contamination. From the colour-colour diagram the reddening for Be 64 and Be 69 is estimated to be ∼1.05mag and ∼0.65mag respectively. In case of Be 69 the comparison of observational colour - magnitude diagram (CMD) with the standard isochrones of VandenBerg (1985ApJS...58..711V) indicates an apparent discrepancy between the shape of the turnoff and isochrones. The morphological features of the CMDs of Be 69 are better understood in terms of convective overshooting. The comparison of CMDs of both the clusters with the convective overshoot models (Bertelli et al. 1994A&AS..106..275B) produces a good fit for a metallicity Z=0.008 and age =0.8-1.0Gyr. An apparent distance modulus (m-M)=16.2 and 14.3 has been estimated for Be 64 and Be 69, respectively, which corresponds to a distance of 3880±480pc and 2860±310pc, respectively.

Abstract Copyright:

Journal keyword(s): open clusters: individual: Be 64 (Cl Berkeley 64), Be 69 (Cl Berkeley 69) - HR diagram

VizieR on-line data: <Available at CDS (J/A+AS/122/111): b64.ps b69.ps table2 table3n table3s>

Nomenclature: Table 2: Cl* Berkeley 64 PDB NNN (Nos 1-119). Table 3n, 3s: Cl* Berkeley 69 PDB WNNN (Nos N1-N76) and (Nos S1-S76)

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
1 Cl Berkeley 64 OpC 02 21 02.8 +65 53 48           ~ 23 0
2 Cl Berkeley 69 OpC 05 24 24 +32 36.5           ~ 32 0

    Equat.    Gal    SGal    Ecl

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