2006A&A...445..493M

Query : 2006A&A...445..493M

2006A&A...445..493M - Astronomy and Astrophysics, volume 445493-501 (2006/1-2)

Open clusters in the Third Galactic Quadrant. II. The intermediate age open clusters NGC 2425 and NGC 2635.

MOITINHO A., CARRARO G., BAUME G. and VAZQUEZ R.A.

Abstract (from CDS):

We analyse CCD broad band (UBV(RI)C) photometric data obtained in the fields of the poorly studied open clusters NGC 2425 and NGC 2635. Both clusters are found to be of intermediate age thus increasing the population of open clusters known to be of the age of, or older than, the Hyades. More explicitly, we find that NGC 2425 is a 2.2Gyr old cluster, probably of solar metallicity, located at 3.5kpc from the Sun. NGC 2635 is a Hyades age (600Myr) cluster located at a distance of 4.0kpc from the Sun. Its Colour Magnitude Diagram reveals that it is extremely metal poor for its age and position, thus making it a very interesting object in the context of Galactic Disk chemical evolution models.

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Journal keyword(s): Galaxy: open clusters and associations: individual: NGC 2425, NGC 2635

VizieR on-line data: <Available at CDS (J/A+A/445/493): table2.dat table3.dat>

Nomenclature: Table 2: Cl* NGC 2425 MCB NNNN (Nos 1-3304). Table 3: Cl* NGC 2635 MCB NNNN (Nos 1-3113).

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 18

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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 - 2026 		#notes
1 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
2 NGC 2204 OpC 06 15 31.5 -18 40 28   9.35 8.6     ~ 172 0
3 Cl Ruprecht 4 OpC 06 48 57.7 -10 31 24           ~ 51 0
4 Cl Berkeley 33 OpC 06 57 49.7 -13 13 38           ~ 95 0
5 NGC 2425 OpC 07 38 18.4 -14 53 32           ~ 64 0
6 NGC 2420 OpC 07 38 24.6 +21 34 26   9.0 8.3     ~ 523 0
7 NGC 2571 OpC 08 18 54.3 -29 45 45   7.16 7.0     ~ 85 0
8 NGC 2580 OpC 08 21 27.0 -30 18 18     9.7     ~ 25 0
9 NGC 2588 OpC 08 23 12.4 -32 58 24     11.8     ~ 24 0
10 NGC 2635 OpC 08 38 28.6 -34 46 52   12.06 11.2     ~ 40 0
11 Cl Pismis 8 OpC 08 41 36.2 -46 16 01   10.10 9.5     ~ 47 0
12 C 0920-509 Cl* 09 22 07 -51 06.1   10.77 10.2     ~ 15 1
13 Cl Pismis 15 OpC 09 34 44.7 -48 02 36           ~ 45 0
14 NGC 6404 OpC 17 39 38.9 -33 13 24     10.6     ~ 55 0
15 NGC 6583 OpC 18 15 51.0 -22 08 38     10.0     ~ 83 0
16 NAME CMa Region reg ~ ~           ~ 52 0
17 NAME Pup Vel Region reg ~ ~           ~ 6 0
18 NAME Norma-Cygnus Arm reg ~ ~           ~ 79 0

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