2018MNRAS.476.4907D

Query : 2018MNRAS.476.4907D

2018MNRAS.476.4907D - Mon. Not. R. Astron. Soc., 476, 4907-4931 (2018/June-1)

Red giants and yellow stragglers in the young open cluster NGC 2447.

DA SILVEIRA M.D., PEREIRA C.B. and DRAKE N.A.

Abstract (from CDS):

In this work we analysed, using high-resolution spectroscopy, a sample of 12 single and 4 spectroscopic binary stars of the open cluster NGC 2447. For the single stars, we obtained atmospheric parameters and chemical abundances of Li, C, N, O, Na, Mg, Al, Ca, Si, Ti, Ni, Cr, Y, Zr, La, Ce, Nd, Eu. Rotational velocities were obtained for all the stars. The abundances of the light elements and Eu and the rotational velocities were derived using spectral synthesis technique. We obtained a mean metallicity of [Fe/H] = -0.17 ± 0.05. We found that the abundances of all elements are similar to field giants and/or giants of open clusters, even for the s-process elements, which are enhanced as in other young open clusters. We show that the spectroscopic binaries NGC 2447-26, 38, and 42 are yellow-straggler stars, of which the primary is a giant star and the secondary a main-sequence A-type star.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: abundances - stars: evolution - stars: fundamental parameters - open clusters and associations: individual: NGC 2447

Simbad objects: 31

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Number of rows : 31
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 752 OpC 01 56 53.7 +37 45 06           ~ 712 0
2 CD-23 2813 * 05 31 23.0022174144 -23 48 23.720244876   11.69 10.73     ~ 2 0
3 NGC 2360 OpC 07 17 45.8 -15 38 21           ~ 213 0
4 CD-23 6042 * 07 43 50.9157750096 -23 41 43.488283740   10.98 9.98     ~ 14 0
5 HD 62679 * 07 44 18.4520982384 -23 53 23.682193260   9.637 8.15     K2/3(III) 34 0
6 NGC 2447 4 * 07 44 19.8869329416 -23 52 34.324061700   11.22 10.43     ~ 27 0
7 CD-23 6074 SB* 07 44 24.5740382160 -23 50 43.910861460   10.15 9.76     ~ 36 0
8 CD-23 6076 * 07 44 25.3994839320 -23 52 55.880824008   9.90 8.46     ~ 15 0
9 CPD-23 2745 * 07 44 25.7293012440 -23 49 52.987121184   11.05 10.16     ~ 37 0
10 CPD-23 2747 * 07 44 27.8580849687 -23 50 41.710968687   10.42 9.99     ~ 6 0
11 NGC 2447 11 SB* 07 44 31.0157207928 -23 53 27.893038848     11.78     ~ 10 0
12 TYC 6540-4084-1 * 07 44 32.8195184112 -23 57 50.434191576   11.10 10.25     ~ 14 0
13 CPD-23 2764 * 07 44 33.6559676712 -23 51 42.125907528   10.46 9.38     ~ 36 0
14 NGC 2447 OpC 07 44 34.6 -23 51 22           ~ 170 1
15 CPD-23 2778 * 07 44 42.6420010248 -23 50 55.835038392   11.01 10.09     ~ 20 0
16 CD-23 6086 * 07 44 44.1827156664 -23 47 22.208259984   11.33 10.59     ~ 19 0
17 CD-23 6102 * 07 44 50.2512648336 -23 52 27.129050472   10.78 9.96     ~ 35 0
18 CD-23 6099 * 07 44 51.2943196512 -23 49 39.002026080   11.31 10.210     ~ 21 0
19 CD-23 6103 * 07 44 53.8027153200 -23 53 15.066363156   10.37 9.90     ~ 20 0
20 CD-23 6108 SB* 07 44 56.8868004240 -23 53 58.418568744   10.69 9.91 9.67 9.03 ~ 22 0
21 CPD-23 2813 * 07 45 09.4668416040 -23 49 32.548654560   11.21 10.12     ~ 14 0
22 HD 65810 * 07 59 52.0475616144 -18 23 57.180883308 4.77 4.69 4.61 4.46 4.40 A1V 122 0
23 NGC 3114 OpC 10 01 55.0 -60 02 16   4.47 4.2     ~ 213 0
24 NGC 3680 OpC 11 25 19.8 -43 14 38   8.40 7.6     ~ 340 0
25 NGC 5822 OpC 15 04 08.3 -54 21 52           ~ 238 0
26 IC 4651 OpC 17 24 48.5 -49 55 23           ~ 374 0
27 NGC 6404 OpC 17 39 38.9 -33 13 24     10.6     ~ 55 0
28 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
29 NGC 6705 OpC 18 51 03.7 -06 16 18   6.32 5.8     ~ 442 0
30 NGC 6940 OpC 20 34 28.4 +28 17 07           ~ 215 0
31 NGC 7789 OpC 23 57 19.4 +56 43 28   7.68 6.7     ~ 575 0

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