2017A&A...597A..33T


C.D.S. - SIMBAD4 rel 1.7 - 2020.06.06CEST07:43:53

2017A&A...597A..33T - Astronomy and Astrophysics, volume 597A, 33-33 (2017/1-1)

Chemical tagging of the Ursa Major moving group A northern selection of FGK stars.

TABERNERO H.M., MONTES D., GONZALEZ HERNANDEZ J.I. and AMMLER-VON EIFF M.

Abstract (from CDS):

Context. Stellar kinematic groups are kinematically coherent groups of stars that might have a common origin. These groups spread through the Galaxy over time owing to tidal effects caused by Galactic rotation and disk heating. However, the chemical information survives these processes.
Aims. The information provided by analysis of chemical elements can reveal the origin of these kinematic groups. Here we investigate the origin of the stars that belong to the Ursa Major (UMa) moving group (MG).
Methods. We present high-resolution spectroscopic observations obtained from three different spectrographs of kinematically selected FGK stars of the Ursa Major moving group. Stellar atmospheric parameters (Teff, logg, ξ, and [Fe/H]) were determined using our own automatic code (STEPAR), which makes use of the sensitivity of iron equivalent widths (EWs) measured in the spectra. We critically compared the STEPAR results with other methods (Teff values derived using the infrared flux method (IRFM) and logg values based on HIPPARCOS parallaxes). We derived the chemical abundances of 20 elements and their [X/Fe] ratios for all stars in the sample. We performed a differential abundance analysis with respect to a reference star of the UMa MG (HD 115043). We also carried out a systematic comparison of the abundance pattern of the Ursa Major MG and the Hyades SC with the thin disk stellar abundances.
Results. Our chemical tagging analysis indicates that the Ursa Major MG is less affected by field star contamination than other moving groups (such as the Hyades SC). We find a roughly solar iron composition [Fe/H]=0.03±0.07dex for the finally selected stars, whereas the [X/Fe] ratios are roughly subsolar except for super-solar Barium abundance.
Conclusions. We conclude that 29 out of 44 (i.e., 66%) candidate stars have similar chemical compositions. In addition, we find that the abundance pattern of the Ursa Major MG might be marginally different from that of the Hyades SC.

Abstract Copyright: © ESO, 2016

Journal keyword(s): open clusters and associations: individual: Ursa Major moving group - stars: fundamental parameters - stars: abundances - stars: kinematics and dynamics - stars: late-type

Status at CDS:  

Simbad objects: 60

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Number of rows : 60

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 2MASS J00252289+6407557 * 00 25 22.7894847043 +64 07 55.468725373   23.3 21.4     K3V 8 0
2 HD 4048 * 00 42 50.7438045552 -09 55 18.085004074   7.14 6.64     F8V 27 0
3 HD 7590 BY* 01 16 29.2527780479 +42 56 21.902677393   7.17 6.59     G0-V(k) 80 0
4 HD 8004 PM* 01 20 36.9433245680 +54 57 44.463150877   7.78 7.20     G0 22 0
5 HD 13289 * 02 08 54.3107223247 -35 47 31.725056941   8.80 8.26     F5V 17 0
6 HD 13829 * 02 17 25.6740500183 +65 15 43.549259972   8.17 7.61     F8 22 0
7 HD 20367 PM* 03 17 40.0466570902 +31 07 37.358433303   6.962 6.399     F8V 117 1
8 Cl Melotte 25 OpC 04 26 54.00 +15 52 00.0           ~ 2646 0
9 HD 32147 PM* 05 00 48.9991346145 -05 45 13.220341956 8.27 7.27 6.21 5.36 4.87 K3+V 413 1
10 V* AK Lep BY* 05 44 26.5368916746 -22 25 18.614358408   7.09 6.15     K3 155 0
11 * gam Lep PM* 05 44 27.7908940 -22 26 54.180763 4.08 4.07 3.60 3.15 2.89 F6V 393 0
12 V* V1386 Ori Ro* 06 06 40.4779729363 +15 32 31.579218639 8.016 7.565   6.2   K0V 146 0
13 HD 51419 PM* 06 58 11.7501358463 +22 28 33.184189940 7.630 7.560 6.940     G5VFe-1 72 0
14 HD 56168 PM* 07 21 06.7315172919 +67 39 42.609497625   9.28 8.38     K2.5V 32 0
15 HD 59747 BY* 07 33 00.5803322465 +37 01 47.450630754   8.58 7.70     G5V 82 0
16 HD 61606 BY* 07 39 59.3285412183 -03 35 51.026043193 8.89 8.136 7.169 6.626 6.15 K3V 162 0
17 HD 64942 * 07 55 58.2270625134 -09 47 49.933268457   9.00 8.34     G3/5V 47 0
18 HD 72659 PM* 08 34 03.1900792374 -01 34 05.579345170   8.08 7.47     G2V 128 1
19 IC 2391 OpC 08 40 32 -53 02.0           ~ 713 0
20 HD 75935 BY* 08 53 49.9409088594 +26 54 47.679583477   9.21 8.45     G8V 44 0
21 HD 76218 * 08 55 55.6829520230 +36 11 46.282794269   8.46 7.68     G5V 57 0
22 HD 81659 PM* 09 26 42.8338701917 -14 29 26.682595487   8.61 7.89     G6/8V 38 0
23 HD 91148 PM* 10 31 45.6037992423 +24 04 55.940851741   8.61 7.94     G8V 29 0
24 HD 91204 * 10 32 05.5009924924 +17 59 23.050873532   8.44 7.82     G0 52 0
25 HD 93215 PM* 10 46 09.2336201915 +25 45 39.690448783   8.70 8.05 7.4   G5V 40 0
26 HD 100310 PM* 11 32 57.0559122630 +52 31 25.354433510   9.55 8.82     K0V 16 0
27 HD 104289 * 12 00 41.2680500057 +59 21 11.221477389   8.59 8.07     F8 21 0
28 NAME Ursa Major Moving Group MGr 12 32 +57.0           ~ 377 2
29 V* DO CVn BY* 12 35 51.2878234258 +51 13 17.312165454   9.50 8.54     K0 41 0
30 Cl Collinder 261 OpC 12 38 11.5 -68 22 01     10.7     ~ 156 0
31 HD 110463 BY* 12 41 44.5224610977 +55 43 28.823352008   9.25 8.28     K3V 99 0
32 HD 115043 PM* 13 13 37.0081498408 +56 42 29.762950141   7.423 6.813     G1Va 237 0
33 HD 116497 * 13 23 44.7607326626 +19 05 28.306771093   8.41 7.85     G0 17 0
34 HD 128311 BY* 14 36 00.5607343227 +09 44 47.453643485 9.232 8.441 7.446 6.895 6.425 K3V 268 1
35 HD 130948 BY* 14 50 15.8107686483 +23 54 42.633203114   6.456 5.867     F9IV-V 252 0
36 * ksi Boo BY* 14 51 23.37993 +19 06 01.6994 5.618 5.370 4.593 3.91 3.48 G7Ve+K5Ve 432 0
37 HD 135143 PM* 15 08 30.3701253999 +72 22 09.632613533   8.43 7.83     G0 24 0
38 V* AN CrB BY* 15 35 30.1599841677 +36 12 34.621897000       8.1   K0V 18 0
39 HD 150706 PM* 16 31 17.5833539505 +79 47 23.199471923   7.622 7.016     G0 178 1
40 HD 151044 PM* 16 42 27.8126680268 +49 56 11.181266805       6.2   F8V 112 0
41 HD 153458 PM* 17 00 01.6587467890 -07 31 53.973437403   8.63 7.98     G5V 58 0
42 HD 153637 * 17 01 49.1580374193 -30 17 56.636443544   10.05 9.55     F3V 3 0
43 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11469 0
44 HD 163183 PM* 17 47 38.1784635056 +73 07 57.642676199   8.33 7.75     G0 28 0
45 HD 162209 PM* 17 48 13.0836608934 +38 13 57.318337482   8.39 7.77     G0 19 0
46 HD 167043 * 18 11 46.8253749943 +37 53 14.485030567   8.90 8.39     G0 13 0
47 HD 167389 PM* 18 13 07.2257142711 +41 28 31.311389409   7.96 7.39     F8V: 63 0
48 HD 181655 SB* 19 19 38.9988332720 +37 19 49.945432256 7.20 6.99   5.8   G5V 107 0
49 HD 184385 PM* 19 33 25.5526152975 +21 50 25.174167706 7.970 7.630 6.880 6.468 6.098 G8V 87 0
50 HD 184960 PM* 19 34 19.7897154364 +51 14 11.827779462   6.21   5.4   F7V 137 0
51 HD 188015 PM* 19 52 04.5430063826 +28 06 01.341678198   8.95 8.23     G5IV 74 1
52 HD 216625 PM* 22 54 07.4089311001 +19 53 31.377705041       6.7   F8 45 0
53 HD 217813 BY* 23 03 04.9774272436 +20 55 06.862793297 7.364 7.249 6.616 6.279 5.948 G1V 101 0
54 NAME Castor Moving Group As* ~ ~           ~ 115 1
55 NAME Hyades Moving Group MGr ~ ~           ~ 237 0
56 NAME Sirius Moving Group MGr ~ ~           ~ 77 0
57 NAME Hercules Stream MGr ~ ~           ~ 182 0
58 NAME Pleiades Moving Group MGr ~ ~           ~ 236 1
59 NAME Argus Association As* ~ ~           ~ 159 0
60 NAME Wolf 630 Moving Group MGr ~ ~           ~ 34 0

    Equat.    Gal    SGal    Ecl

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2020.06.06-07:43:53

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