2005A&A...436..527C


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.30CET03:31:52

2005A&A...436..527C - Astronomy and Astrophysics, volume 436, 527-534 (2005/6-3)

Luminosity and mass functions of galactic open clusters. II. NGC 4852.

CARRARO G., BAUME G., PIOTTO G., MENDEZ R.A. and SCHMIDTOBREICK L.

Abstract (from CDS):

We present wide-field deep UBVI photometry for the previously unstudied open cluster NGC 4852 down to a limiting magnitude I∼24, obtained from observations taken with the Wide Field Imager camera on-board the MPG/ESO 2.2m telescope at La Silla (ESO, Chile). These data are used to obtain the first estimate of the cluster basic parameters, to study the cluster spatial extension by means of star counts, and to derive the Luminosity (LF) and Mass Function (MF). The cluster radius turns out to be 5.0±1.0arcmin. The cluster emerges clearly from the field down to V=20mag. At fainter magnitudes, it is completely confused with the general Galactic disk field. The stars inside this region define a young open cluster (200 million years old) 1.1kpc far from the Sun (m-M=11.60, E(B-V)=0.45). The Present Day Mass Functions (PDMF) from the V photometry is one of the most extended in mass obtained to date, and can be represented as a power-law with a slope α=2.3±0.3 and (the Salpeter MF in this notation has a slope α=2.35), in the mass range 3.2≤(m)/(m)≤0.6. Below this mass, the MF cannot be considered as representative of the cluster MF, as the cluster merges with the field and therefore the MF is the result of the combined effect of strong irregularities in the stellar background and interaction of the cluster with the dense Galactic field. The cluster total mass at the limiting magnitude results to be 2570±210M.

Abstract Copyright:

Journal keyword(s): open clusters and associations: individual: NGC 4852 - Hertzsprung-Russell (HR) and C-M diagrams

VizieR on-line data: <Available at CDS (J/A+A/436/527): table5.dat>

Nomenclature: Table 5: Cl* NGC 4852 CBP NNNNNN (Nos 1-145926).

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

Simbad objects: 6

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Number of rows : 6

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 SA 92- reg 00 55 03.80 +00 47 13.2           ~ 98 0
2 SA 104- reg 12 42 21.0 -00 32 29           ~ 57 0
3 NGC 4815 OpC 12 58 01 -64 57.6   9.61 8.6     ~ 73 0
4 NGC 4852 OpC 13 00 09 -59 36.8     8.9     ~ 24 0
5 SA 107- reg 15 39.2 -00 20           ~ 89 0
6 SA 110- reg 18 45 +00.6           ~ 95 0

    Equat.    Gal    SGal    Ecl

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2020.10.30-03:31:52

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