2004A&A...418..979P


C.D.S. - SIMBAD4 rel 1.7 - 2019.07.21CEST13:56:49

2004A&A...418..979P - Astronomy and Astrophysics, volume 418, 979-988 (2004/5-2)

The relatively young, metal-poor and distant open cluster NGC 2324.

PIATTI A.E., CLARIA J.J. and AHUMADA A.V.

Abstract (from CDS):

We have obtained CCD photometry in the Johnson V, Kron-Cousins I and CT1 Washington systems for NGC 2324, a rich open cluster located ∼35° from the Galactic anticentre direction. We measured V magnitudes and V-I colours for 2865 stars and T1 magnitudes and C-T1 colours for 1815 stars in an area of 13.6'x13.6'. The comparison of the cluster colour-magnitude diagrams with isochrones of the Geneva group yield E(V-I)=0.33±0.07 and V-MV=13.70±0.15 for logt=8.65 (t=440Myr) and Z=0.008 ([Fe/H]=-0.40), and E(C-T1)=0.40±0.10 and T1-MT1=13.65±0.15 for the same age and metallicity level. The resulting E(V-I) reddening value implies E(B-V)=0.25±0.05 and a distance from the Sun of (3.8±0.5)kpc. Star counts carried out within and outside the cluster region allowed us to estimate the cluster angular radius as 5.3'±0.3' (5.9pc). When using the E(B-V) reddening value here derived and the original Washington photometric data of Geisler et al. (1991AJ....102.1836G) for the stars confirmed as red cluster giants from Coravel radial velocities, we found [Fe/H]=-0.31±0.04, which is in good agreement with the best fits of isochrones. Therefore, NGC 2324 is found to be a relatively young, metal-poor and distant open cluster located beyond the Perseus spiral arm. A comparison of NGC 2324 with 10 well-known open clusters of nearly the same age shows that the cluster metal abundance and its position in the Galaxy are consistent with the existence of a radial abundance gradient of -0.07dex/kpc in the Galactic disc.

Abstract Copyright:

Journal keyword(s): Galaxy: open clusters and associations: individual: NGC 2324 - Galaxy: general - techniques: photometric

VizieR on-line data: <Available at CDS (J/A+A/418/979): table1.dat table2.dat>

Nomenclature: Table 1: Cl* NGC 2324 PCA 1-NNNN (Nos 1-1 to 1-2865). Table 2: Cl* NGC 2324 PCA 2-NNNN (Nos 2-1 to 2-1815).

Status in Simbad:  will not be processed

Simbad objects: 18

goto Full paper

goto View the reference in ADS

Number of rows : 18

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 NGC 1342 OpC 03 31 38 +37 22.6   7.35 6.7     ~ 98 0
2 NGC 1758 OpC 05 04 35.00 +23 47 54.0           ~ 26 0
3 NGC 1907 OpC 05 28 05 +35 19.5   8.87 8.2     ~ 100 2
4 M 37 OpC 05 52 18 +32 33.2   6.19 5.6     ~ 323 2
5 NGC 2194 OpC 06 13 46 +12 49.1   9.03 8.5     ~ 63 1
6 2MASS J07040031+0058168 RG* 07 04 00.3155299380 +00 58 16.877592538   14.023 12.43 11.96 11.015 ~ 12 0
7 2MASS J07040376+0100148 RG* 07 04 03.7646226834 +01 00 14.808131110   14.444 13.425 12.97 12.267 ~ 12 0
8 NGC 2324 OpC 07 04 07 +01 02.7   8.83 8.4     ~ 122 0
9 2MASS J07041353+0102051 RG* 07 04 13.5452505017 +01 02 05.151456859   14.635 13.615   13.938 ~ 11 0
10 Cl* NGC 2324 MMU 2027 *iC 07 04 14.7615985447 +01 01 06.702708879   14.374 13.332 12.90 12.201 ~ 8 0
11 Cl* NGC 2324 MMU 1992 *iC 07 04 16.1654408781 +01 01 13.461244905   13.731 12.508   11.242 ~ 11 0
12 NGC 2447 OpC 07 44 30 -23 51.4   6.57 6.2     ~ 113 1
13 NGC 2482 OpC 07 55 12 -24 15.5   7.71 7.3     ~ 68 0
14 NGC 2627 OpC 08 37 15 -29 57.3     8.4     ~ 43 0
15 Cl Melotte 111 OpC 12 25 06.00 +26 06 00.0           ~ 390 0
16 NAME 1ES 1249+17.4W QSO 12 51 46.740 +17 11 13.93     18.5 18.4   ~ 17 1
17 NGC 5999 OpC 15 52 11.3 -56 29 17     9.0     ~ 33 0
18 NGC 6631 OpC 18 27 15 -12 01.2     11.7     ~ 13 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2004A&A...418..979P and select 'bookmark this link' or equivalent in the popup menu


2019.07.21-13:56:49

© Université de Strasbourg/CNRS

    • Contact