2009ApJ...706.1095Z

Query : 2009ApJ...706.1095Z

2009ApJ...706.1095Z - Astrophys. J., 706, 1095-1113 (2009/December-1)

Chemical compositions of kinematically selected outer halo stars.

ZHANG L., ISHIGAKI M., AOKI W., ZHAO G. and CHIBA M.

Abstract (from CDS):

Chemical abundances of 26 metal-poor dwarfs and giants are determined from high-resolution and high signal-to-noise ratio spectra obtained with the Subaru/High Dispersion Spectrograph. The sample is selected so that most of the objects have outer-halo kinematics. Self-consistent atmospheric parameters were determined by an iterative procedure based on spectroscopic analysis. Abundances of 13 elements, including α-elements (Mg, Si, Ca, Ti), odd-Z light elements (Na, Sc), iron-peak elements (Cr, Mn, Fe, Ni, Zn), and neutron-capture elements (Y, Ba), are determined by two independent data reduction and local thermodynamic equillibrium analysis procedures, confirming the consistency of the stellar parameters and abundances results. We find a decreasing trend of [α/Fe] with increasing [Fe/H] for the range of -3.5< [Fe/H] ←1, as found by Stephens & Boesgaard. [Zn/Fe] values of most objects in our sample are slightly lower than the bulk of halo stars previously studied. These results are discussed as possible chemical properties of the outer halo in the Galaxy.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: abundances - Galaxy: evolution - Galaxy: halo - stars: abundances

VizieR on-line data: <Available at CDS (J/ApJ/706/1095): table1.dat ew.dat table3.dat table4.dat table10.dat table11.dat table12.dat table13.dat table14.dat>

Simbad objects: 32

goto Full paper

goto View the references in ADS

Number of rows : 32
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 G 5-19 PM* 03 11 26.5406862511 +12 37 09.570643728   11.77   11.0   ~ 54 0
2 BD+22 547 * 03 46 06.0205738104 +23 13 08.482861560   11.2 9.95     K2 9 0
3 HD 33771 Pe* 05 10 49.6205389584 -37 49 03.118183140   10.19 9.41     G6/8w(F) 45 0
4 LP 894-3 SB* 05 57 50.6943078312 -30 53 48.609432744   11.65 11.34     ~ 17 0
5 BD+00 2058A Pe* 07 43 43.9667566029 -00 04 00.973799875   10.653 10.202 9.888 9.578 sdF 91 0
6 G 47-12 PM* 08 57 59.2546963872 +24 28 22.529303813   12.52   11.9   ~ 48 0
7 G 115-58 PM* 09 10 48.1006877832 +46 22 36.756159204   12.54   11.3   sdF5 51 0
8 BD+09 2190 Pe* 09 29 15.5615542183 +08 38 00.467004388   11.54   10.8   sdA5 144 0
9 G 116-37 PM* 09 32 02.7471903840 +36 49 13.509277572   16.1   14.3   M3.3 10 0
10 Ross 889 Pe* 09 40 43.2053340378 +01 00 29.511836741       10.39   sdA4 166 0
11 HD 237846 Pe* 09 52 38.6827483320 +57 54 58.614479532   10.60 9.95     CEMP-no 105 0
12 HD 85773 Pe* 09 53 39.2426826504 -22 50 08.424342096   10.51 9.43     Gwl: 106 0
13 Ross 892 PM* 10 27 24.2460060626 +01 24 00.190284079   11.55   10.8   sdF8 76 0
14 BD+04 2466 Pe* 11 26 49.1891119944 +03 51 51.641714700   11.22 10.67 10.45   KIIvw 85 0
15 HD 107752 Pe* 12 22 52.7183284776 +11 36 25.486007148   10.79 10.1     KIIvw 83 0
16 HD 108577 Pe* 12 28 16.8614710944 +12 20 41.089853184   10.18 9.6 9.8   KIIvw 84 0
17 BD+10 2495 SB* 12 59 19.9306410576 +09 14 35.634594444   10.44 9.73     G0 82 0
18 BD+29 2356 RG* 13 01 52.4291777760 +29 11 17.936259972   12.27 11.50     ~ 33 0
19 BD+12 2547 PM* 13 04 06.5913367608 +11 26 15.827987724   10.88 9.88     ~ 40 0
20 G 238-30 Pe* 13 17 40.1964559089 +64 15 12.170254208   13.91 12.9 12.4   sdA8 53 1
21 HD 119516 HB* 13 43 26.7251638944 +15 34 31.069770096   9.59 9.12     G5 84 0
22 HD 124358 PM* 14 13 21.3207976896 -12 09 24.186647772   10.38 9.54     Gwl 52 0
23 BD+09 2870 Pe* 14 16 29.9462349936 +08 27 52.952766408   10.58 9.70     KIIvw 82 0
24 Ross 50 Pe* 14 34 51.1109112182 +25 10 03.231384132   13.38   12.1   ~ 53 0
25 HD 128279 Pe* 14 36 48.5108525999 -29 06 46.612858494 8.64 8.63 8.00     Gw 214 0
26 BD+30 2611 Pe* 15 06 53.8282684752 +30 00 36.941373756 11.50 10.37 9.13     G8III 152 0
27 HD 134439 PM* 15 10 13.0873110544 -16 22 45.877317625 10.03 9.837 9.066 8.604 8.160 sd:K1Fe-1 341 0
28 Ross 1038 PM* 15 12 32.4356760847 +06 01 44.317565672   13.09 12.33 11.5   G5 68 0
29 BD+01 3070 SB* 15 22 40.0572099288 +01 15 53.477547804   10.59 9.98     G0 42 0
30 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
31 HD 175305 RG* 18 47 06.4416868934 +74 43 31.451436187 8.07 7.93 7.18 6.52 6.03 G5III 239 0
32 Ross 219 SB* 22 28 29.7719980584 +51 10 18.670053360   13.41   11.5   sdF8: 30 0

To bookmark this query, right click on this link: simbad:objects in 2009ApJ...706.1095Z and select 'bookmark this link' or equivalent in the popup menu