2013MNRAS.432.1672L

Query : 2013MNRAS.432.1672L

2013MNRAS.432.1672L - Mon. Not. R. Astron. Soc., 432, 1672-1679 (2013/June-3)

Deep and wide photometry of two open clusters NGC 1245 and NGC 2506: dynamical evolution and halo.

LEE S.H., KANG Y.-W. and ANN H.B.

Abstract (from CDS):

We studied the structure of two old open clusters, NGC 1245 and NGC 2506, from a wide and deep VI photometry data acquired using the CFH12K CCD camera at Canada-France-Hawaii Telescope. We devised a new method for assigning cluster membership probability to individual stars using both spatial positions and positions in the colour-magnitude diagram. From analyses of the luminosity functions at several cluster-centric radii and the radial surface density profiles derived from stars with different luminosity ranges, we found that the two clusters are dynamically relaxed to drive significant mass segregation and evaporation of some fraction of low-mass stars. There seems to be a signature of tidal tail in NGC 1245 but the signal is too low to be confirmed.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): methods: observational - methods: statistical - techniques: photometric - open clusters and associations: individual: NGC 1245 - open clusters and associations: individual: NGC 2506

Simbad objects: 12

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Number of rows : 12
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 NGC 1245 OpC 03 14 44.3 +47 14 06   9.16 8.4     ~ 171 0
2 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
3 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
4 M 37 OpC 05 52 18.6 +32 32 36           ~ 436 0
5 M 41 OpC 06 46 03.1 -20 43 07   4.89 4.5     ~ 308 0
6 SA 98- reg 06 52 04.1 -00 23 58           ~ 179 0
7 NGC 2506 OpC 08 00 02.3 -10 46 22   8.28 7.6     ~ 313 0
8 NGC 2548 OpC 08 13 34.0 -05 43 11           ~ 227 0
9 NGC 2632 OpC 08 39 58.4 +19 36 33           ~ 1733 0
10 NGC 2682 OpC 08 51 23.5 +11 48 54           ~ 2528 0
11 NGC 6705 OpC 18 51 03.7 -06 16 18   6.32 5.8     ~ 442 0
12 NGC 6819 OpC 19 41 18.3 +40 11 19   8.21 7.3     ~ 719 0

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