LAMOSTJ224245.51+272024.5

taken from 1 paper(s):

/M.Jeong et al.(2023)/


M.Jeong et al.,ApJ, 948, 38, 2023(ADS)

Search for Extremely Metal-poor Stars with Gemini-N/Graces. I. Chemical-abundance Analysis


Stellar Parameters

Teff : 4857+-144 log g : 1.46+0.52-0.39 vturb : 2.3

Chemical Abundances

Original Data Converted Data Asplund et al. (2009)
Element Nline [X/H] [X/Fe] log-e [X/H] [X/Fe] log-e Element
CN/A...+0.05...-3.350.055.08C
Na I2...-1.02+-0.261.82+-0.26-4.42+-0.26-1.02+-0.261.82+-0.26Na I
Mg I4...+0.24+-0.044.44+-0.04-3.16+-0.040.24+-0.044.44+-0.04Mg I
K I1...+1.48+-0.363.11+-0.36-1.92+-0.361.48+-0.363.11+-0.36K I
Ca I4...+0.71+-0.143.65+-0.14-2.69+-0.140.71+-0.143.65+-0.14Ca I
Sc II1...-0.11+-0.36-0.36+-0.36-3.51+-0.36-0.11+-0.36-0.36+-0.36Sc II
Cr I2...+0.01+-0.262.25+-0.26-3.39+-0.260.01+-0.262.25+-0.26Cr I
Fe I40-3.40+-0.080.00+-0.084.10+-0.08-3.40+-0.080.00+-0.084.10+-0.08Fe I
Ni I1...+0.89+-0.363.71+-0.36-2.51+-0.360.89+-0.363.71+-0.36Ni I

Binary Parameters

Vrad -378.8

Position

Right Ascension : 22 42 45.51 Declination : +27 20 24.5 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2018-09-03 N/A GEMINIGRACES 45000 60 600 -378.8