BD+54_1323

taken from 2 paper(s):

/D.L.Burris et al.(2000)/ /C.J.Hansen et al.(2012)/


D.L.Burris et al.,ApJ, 544, 302, 2000(ADS)

NEUTRON-CAPTURE ELEMENTS IN THE EARLY GALAXY: INSIGHTS FROM A LARGE SAMPLE OF METAL-POOR GIANTS


Stellar Parameters

Teff : 5300 log g : 2.50 vturb : 1.70

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
FeN/A-1.65......-1.48...6.02Fe
SrN/A...0.571.82-1.050.431.82Sr
YN/A...-0.140.45-1.76-0.280.45Y
ZrN/A...0.201.15-1.430.051.15Zr
BaN/A...0.370.85-1.330.150.85Ba
LaN/A...0.11-0.32-1.420.06-0.32La
NdN/A...0.290.14-1.280.200.14Nd
EuN/A...0.47-0.67-1.190.29-0.67Eu
DyN/A...0.650.10-1.000.480.10Dy

Position

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
N/A MAYALLKPNO 20000 100-200 N/A N/A

C.J.Hansen et al.,AAP, 545, A31, 2012(ADS)

Silver and palladium help unveil the nature of a second r-process


Stellar Parameters

Teff : 5213+-100 log g : 2.01+-0.25 vturb : 1.5+-0.15

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
FeN/A-1.64+-0.15......-1.64+-0.15...5.86+-0.15Fe
SrN/A...0.05+-0.12...-1.59+-0.120.05+-0.121.28+-0.12Sr
YN/A...-0.08+-0.18...-1.72+-0.18-0.08+-0.180.49+-0.18Y
ZrN/A...0.01+-0.16...-1.63+-0.160.01+-0.160.95+-0.16Zr
PdN/A...-0.33+-0.20...-1.97+-0.20-0.33+-0.20-0.40+-0.20Pd
AgN/A...<-0.21...<-2.11<-0.47<-0.91Ag
BaN/A...0.35+-0.14...-1.29+-0.140.35+-0.140.89+-0.14Ba
EuN/A...0.18+-0.16...-1.46+-0.160.18+-0.16-0.94+-0.16Eu

Position

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
N/A VLT 40000 >100 N/A N/A