2018ApJ...863....4L

Query : 2018ApJ...863....4L

2018ApJ...863....4L - Astrophys. J., 863, 4-4 (2018/August-2)

Tracing the origin of moving groups. I. The γ Leo moving group with high-resolution spectra from the Subaru telescope.

LIANG X.L., ZHAO J.K., ZHAO G., AOKI W., ISHIGAKI M.N., MATSUNO T., CHEN Y.Q., KONG X.M., SHI J.R. and XING Q.F.

Abstract (from CDS):

We present chemical abundances of 15 stars in the γ Leo moving group based on high-resolution spectra with the Subaru High Dispersion Spectrograph. The sample was picked up by applying wavelet transform to UVW velocity components of stars in the solar neighborhood. Both photometric and spectroscopic method have been used to determine the stellar parameters of stars. Abundances of 11 elements including Na, Mg, Al, Si, Ca, Ti, Cr, Fe, Ni, Y, and Ba are measured. Our results show that the member stars display a wide metallicity distribution with abundance ratios similar to Milky Way disk stars. We presume that the γ Leo moving group originated from dynamical effects that are probably related to the Galactic spiral arms.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): stars: abundances - stars: kinematics and dynamics - solar neighborhood

Simbad objects: 22

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Number of rows : 22
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 TYC 2820-1624-1 * 01 58 36.1184579424 +39 55 32.107996236   11.31 10.83     ~ 2 0
2 TYC 1760-111-1 * 01 59 39.4745639088 +26 36 32.521938588   11.96 11.36     ~ 1 0
3 TYC 2838-1980-1 * 02 11 44.4215735424 +42 35 32.951285736   11.83 11.21     ~ 1 0
4 TYC 2838-96-1 * 02 16 49.4063371656 +41 19 06.098310660   12.40 11.95     ~ 1 0
5 TYC 3294-1261-1 * 02 19 45.0002257296 +45 06 38.423744784   12.58 11.42     ~ 1 0
6 TYC 3694-1282-1 PM* 02 19 48.7889712024 +56 23 44.188373904   11.18 10.39     ~ 2 0
7 TYC 2022-417-1 PM* 14 46 37.1739707352 +29 55 03.215363916   12.06 11.40     ~ 1 0
8 TYC 923-1342-1 PM* 15 17 19.4530728024 +10 26 11.956173432   11.90 11.59     ~ 1 0
9 TYC 2084-1906-1 * 17 35 24.6447263016 +26 50 55.803292584   12.14 11.19     ~ 1 0
10 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
11 TYC 1564-641-1 SB* 17 47 37.5682194600 +22 28 46.302172608   12.13 11.65     ~ 2 0
12 TYC 526-1195-1 PM* 21 01 13.2252803688 +00 05 25.927160604   11.47 10.76     ~ 1 0
13 TYC 1134-136-1 * 21 54 55.0169219616 +14 18 11.135702664   12.19 11.78     ~ 1 0
14 TYC 2208-1077-1 PM* 22 08 01.3691280240 +25 49 33.208391028   11.95 11.31     ~ 1 0
15 BD+02 4577 PM* 22 53 20.8000512720 +03 15 55.204014564   12.07 11.29     G 3 0
16 TYC 2253-1606-1 * 23 28 22.8742454304 +26 20 05.667556812   11.97 11.50     ~ 1 0
17 NAME Hyades Moving Group MGr ~ ~           ~ 300 0
18 NAME Arcturus Stream MGr ~ ~           ~ 83 1
19 NAME gam Leo Moving Group MGr ~ ~           ~ 11 0
20 NAME Hercules Stream MGr ~ ~           ~ 264 0
21 NAME AF06 Stream MGr ~ ~           ~ 11 0
22 NAME Sirius Moving Group MGr ~ ~           ~ 125 0

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