HE2323-0256
taken from 2 paper(s):
/J.G.Cohen et al.(2008)/
/J.G.Cohen et al.(2013)/
New Extremely Metal-Poor Stars in the Galactic Halo
Stellar Parameters
Teff : 4915 | log g : 1.70 | vturb : 2.0 |
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 |
CH | 1 | ... | 0.97 | 5.77 | -2.66 | 1.18 | 5.77 | CH |
NH | 2 | ... | 2.16+-0.30 | 6.30+-0.30 | -1.53+-0.30 | 2.31+-0.30 | 6.30+-0.30 | NH |
OH | 1 | ... | 1.96 | 7.20 | -1.49 | 2.35 | 7.20 | OH |
Na I | 2 | ... | 1.45+-0.11 | 3.98+-0.11 | -2.26+-0.11 | 1.58+-0.11 | 3.98+-0.11 | Na I |
Mg I | 7 | ... | 1.47+-0.25 | 5.22+-0.25 | -2.38+-0.25 | 1.46+-0.25 | 5.22+-0.25 | Mg I |
Al I | 1 | ... | 0.48 | 3.16 | -3.29 | 0.55 | 3.16 | Al I |
Si I | 1 | ... | 0.56 | 4.32 | -3.19 | 0.65 | 4.32 | Si I |
Ca I | 2 | ... | 0.31+-0.11 | 2.88+-0.11 | -3.46+-0.11 | 0.38+-0.11 | 2.88+-0.11 | Ca I |
Ca II | 1 | ... | 0.08 | 2.65 | -3.69 | 0.15 | 2.65 | Ca II |
Sc II | 1 | ... | 0.12 | -0.56 | -3.71 | 0.13 | -0.56 | Sc II |
Ti I | 1 | ... | <0.46 | <1.66 | <-3.29 | <0.55 | <1.66 | Ti I |
Ti II | 11 | ... | 0.27+-0.06 | 1.47+-0.06 | -3.48+-0.06 | 0.36+-0.06 | 1.47+-0.06 | Ti II |
V II | 2 | ... | 0.09+-0.03 | 0.30+-0.03 | -3.63+-0.03 | 0.21+-0.03 | 0.30+-0.03 | V II |
Cr I | 5 | ... | -0.54+-0.15 | 1.34+-0.15 | -4.30+-0.15 | -0.46+-0.15 | 1.34+-0.15 | Cr I |
Mn I | 2 | ... | -0.97+-0.03 | 0.63+-0.03 | -4.80+-0.03 | -0.96+-0.03 | 0.63+-0.03 | Mn I |
Mn II | 2 | ... | -0.43+-0.01 | 1.17+-0.01 | -4.26+-0.01 | -0.42+-0.01 | 1.17+-0.01 | Mn II |
Fe I | 57 | -3.79+-0.16 | ... | 3.66+-0.16 | -3.84+-0.16 | ... | 3.66+-0.16 | Fe I |
Fe II | 9 | -3.73+-0.18 | 0.06+-0.18 | 3.72+-0.18 | -3.78+-0.18 | 0.06+-0.18 | 3.72+-0.18 | Fe II |
Co I | 3 | ... | 0.42+-0.18 | 1.55+-0.18 | -3.44+-0.18 | 0.40+-0.18 | 1.55+-0.18 | Co I |
Ni I | 2 | ... | -0.26+-0.04 | 2.20+-0.04 | -4.02+-0.04 | -0.18+-0.04 | 2.20+-0.04 | Ni I |
Cu I | 1 | ... | -0.78 | -0.36 | -4.55 | -0.71 | -0.36 | Cu I |
Sr II | 2 | ... | 0.18+-0.02 | -0.71+-0.02 | -3.58+-0.02 | 0.26+-0.02 | -0.71+-0.02 | Sr II |
Ba II | 2 | ... | -0.66+-0.23 | -2.32+-0.23 | -4.50+-0.23 | -0.66+-0.23 | -2.32+-0.23 | Ba II |
Eu II | 1 | ... | <0.73 | <-2.55 | <-3.07 | <0.77 | <-2.55 | Eu II |
Position
Observing Log
Date of Observation | JD | Facility | Resolution | S/N | Exposure Time | Vrad |
| 2451764.73 | | | | | -125.6+-0.1 |
| 2452158.73 | | | | | -125.6+-0.1 |
| 2452544.90 | KECKHIRES | 46000 | 100 | 7200 | -125.9+-0.1 |
| 2453312.76 | KECKHIRES | 46000 | 100 | 7200 | -125.9+-0.1 |
Normal and Outlying Populations of the Milky Way Stellar Halo at [Fe/H] <-2
Stellar Parameters
Teff : 4915+-100 | log g : 1.7+-0.25 | vturb : 1.9+-0.2 |
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 |
CH | 1 | ... | 1.01 | ... | -2.76 | 1.22 | 5.67 | CH |
NH | 2 | ... | 2.2+-0.3 | ... | -1.63+-0.3 | 2.35+-0.3 | 6.20+-0.3 | NH |
Na I | 3 | ... | 1.76+-0.15 | ... | -2.09+-0.15 | 1.89+-0.15 | 4.15+-0.15 | Na I |
Mg I | 7 | ... | 1.39+-0.13 | ... | -2.60+-0.13 | 1.38+-0.13 | 5.00+-0.13 | Mg I |
Al I | 1 | ... | 0.41 | ... | -3.50 | 0.48 | 2.95 | Al I |
Si I | 1 | ... | 0.55 | ... | -3.34 | 0.64 | 4.17 | Si I |
Ca I | 2 | ... | 0.29+-0.03 | ... | -3.62+-0.03 | 0.36+-0.03 | 2.72+-0.03 | Ca I |
Ca II | 1 | ... | 0.02 | ... | -3.89 | 0.09 | 2.45 | Ca II |
Sc II | 1 | ... | 0.16 | ... | -3.82 | 0.16 | -0.67 | Sc II |
Ti I | 1 | ... | <0.44 | ... | <-3.45 | <0.53 | <1.50 | Ti I |
Ti II | 11 | ... | 0.31+-0.05 | ... | -3.58+-0.05 | 0.40+-0.05 | 1.37+-0.05 | Ti II |
V II | 2 | ... | 0.08+-0.03 | ... | -3.78+-0.03 | 0.20+-0.03 | 0.15+-0.03 | V II |
Cr I | 5 | ... | -0.53+-0.14 | ... | -4.43+-0.14 | -0.45+-0.14 | 1.21+-0.14 | Cr I |
Mn I | 2 | ... | -0.97+-0.03 | ... | -4.94+-0.03 | -0.96+-0.03 | 0.49+-0.03 | Mn I |
Mn II | 2 | ... | -0.48+-0.03 | ... | -4.45+-0.03 | -0.47+-0.03 | 0.98+-0.03 | Mn II |
Fe I | 55 | -3.93+-0.15 | ... | ... | -3.98+-0.15 | ... | 3.52+-0.15 | Fe I |
Fe II | 7 | -3.86+-0.15 | 0.07+-0.15 | ... | -3.91+-0.15 | 0.07+-0.15 | 3.59+-0.15 | Fe II |
Co I | 3 | ... | 0.44+-0.18 | ... | -3.56+-0.18 | 0.42+-0.18 | 1.43+-0.18 | Co I |
Ni I | 2 | ... | -0.29+-0.03 | ... | -4.19+-0.03 | -0.21+-0.03 | 2.03+-0.03 | Ni I |
Cu I | 1 | ... | -0.89 | ... | -4.80 | -0.82 | -0.61 | Cu I |
Sr II | 2 | ... | 0.25+-0.02 | ... | -3.65+-0.02 | 0.33+-0.02 | -0.78+-0.02 | Sr II |
Ba II | 1 | ... | -0.77 | ... | -4.75 | -0.77 | -2.57 | Ba II |
Eu II | 1 | ... | <0.76 | ... | <-3.18 | <0.80 | <-2.66 | Eu II |
Binary Parameters
Position
Observing Log
Date of Observation | JD | Facility | Resolution | S/N | Exposure Time | Vrad |
2002-09 | N/A | KECKHIRES | 36000 | 95 | 3600 | -125.9 |
2004-10 | N/A | KECKHIRES | 36000 | 140 | 7200 | -125.9 |