2005BaltA..14..301C

Query : 2005BaltA..14..301C

2005BaltA..14..301C - Baltic Astronomy, 14, 301-311 (2005/October-0)

Multicolor photometry of red giant candidates in the southern open cluster NGC 2447.

CLARIA J.J., PIATTI A.E., LAPASSET E. and PARISI M.C.

Abstract (from CDS):

Photoelectric photometry in the UBV, DDO and Washington systems is presented for 14 late-type giant candidates of the southern open cluster NGC2447. By applying two independent photometric criteria, nine stars are found to have a high probability of being cluster giants. The photometric membership results are in good agreement with those derived from published Coravel radial velocities. The mean interstellar reddening EB–V = 0.05±0.04 has been derived from the confirmed cluster giants. NGC2447 has a mean ultraviolet excess <δ(U-B)> = 0.01±0.02 (σn) with respect to solar composition K giants, and a mean cyanogen anomaly <ΔCN> = 0.01±0.02 (σn), both implying a small metal deficiency ([Fe/H] ≃ -0.1). Five independent Washington abundance indices yield a mean cluster metallicity of [Fe/H] = -0.09±0.06, in agreement with the two previous estimates. Therefore, NGC2447 is found to be slightly metal-poor.

Abstract Copyright: ∼

Journal keyword(s): methods: observational - techniques: photometric: UBV system - DDO system - Washington system - open clusters: metal abundance

CDS comments: in ref list: JANES 1977PASP...89..576J instead of PASP.89.276, MAITZEN 1976A&A.51.223 instead of 52.223

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 CPD-23 2731 ** 07 44 17.7834218784 -23 54 31.966077168   10.46 10.35 10.41   ~ 18 1
2 HD 62679 * 07 44 18.4520982384 -23 53 23.682193260   9.637 8.15     K2/3(III) 34 0
3 NGC 2447 4 * 07 44 19.8869329416 -23 52 34.324061700   11.22 10.43     ~ 27 0
4 CD-23 6074 SB* 07 44 24.5740382160 -23 50 43.910861460   10.15 9.76     ~ 36 0
5 CD-23 6076 * 07 44 25.3994839320 -23 52 55.880824008   9.90 8.46     ~ 15 0
6 CD-23 6073 * 07 44 25.6516367640 -23 46 28.414109712   11.69 10.06     ~ 6 0
7 CPD-23 2745 * 07 44 25.7293012440 -23 49 52.987121184   11.05 10.16     ~ 37 0
8 CPD-23 2747 * 07 44 27.8580849687 -23 50 41.710968687   10.42 9.99     ~ 6 0
9 CPD-23 2764 * 07 44 33.6559676712 -23 51 42.125907528   10.46 9.38     ~ 36 0
10 NGC 2447 OpC 07 44 34.6 -23 51 22           ~ 170 1
11 CPD-23 2778 * 07 44 42.6420010248 -23 50 55.835038392   11.01 10.09     ~ 20 0
12 CD-23 6086 * 07 44 44.1827156664 -23 47 22.208259984   11.33 10.59     ~ 19 0
13 CD-23 6096 SB* 07 44 48.2781787248 -23 56 47.620004676   10.28 10.07 9.98 9.81 ~ 18 1
14 CD-23 6102 * 07 44 50.2512648336 -23 52 27.129050472   10.78 9.96     ~ 35 0
15 CD-23 6099 * 07 44 51.2943196512 -23 49 39.002026080   11.31 10.210     ~ 21 0
16 CD-23 6103 * 07 44 53.8027153200 -23 53 15.066363156   10.37 9.90     ~ 20 0
17 CD-23 6108 SB* 07 44 56.8868004240 -23 53 58.418568744   10.69 9.91 9.67 9.03 ~ 22 0
18 NGC 5822 OpC 15 04 08.3 -54 21 52           ~ 238 0

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