LP831-70
taken from 6 paper(s):
/J.G.Cohen et al.(2004)/
/G.Israelian et al.(2001)/
/E.Arnone et al.(2005)/
/J.A.Rich and A. M. Boesgaard(2009)/
/J.Melendez et al.(2010)/
/D.Fabbian et al.(2009)/
J.G.Cohen et al.,ApJ, 612, 1107, 2004 (A0036,ADS)
Abundances In Very Metal-Poor Dwarf Stars
Stellar Parameters
| Teff : 6270 | log g : 4.5 | vturb : 1.6 |
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 |
|---|
| Mg I | 5 | ... | ... | 5.33+-0.23 | -2.27+-0.23 | 0.64+-0.23 | 5.33+-0.23 | Mg I |
| Al I | 2 | ... | ... | 3.64+-0.07 | -2.81+-0.07 | 0.10+-0.07 | 3.64+-0.07 | Al I |
| Si I | 1 | ... | ... | 4.70 | -2.81 | 0.10 | 4.70 | Si I |
| Ca I | 3 | ... | ... | 3.52+-0.17 | -2.82+-0.17 | 0.09+-0.17 | 3.52+-0.17 | Ca I |
| Sc II | 3 | ... | ... | 0.62+-0.07 | -2.53+-0.07 | 0.38+-0.07 | 0.62+-0.07 | Sc II |
| Ti I | 3 | ... | ... | <2.73+-0.18 | <-2.22+-0.18 | <0.69+-0.18 | <2.73+-0.18 | Ti I |
| Ti II | 12 | ... | ... | 2.36+-0.12 | -2.59+-0.12 | 0.32+-0.12 | 2.36+-0.12 | Ti II |
| Cr I | 4 | ... | ... | 2.46+-0.11 | -3.18+-0.11 | -0.27+-0.11 | 2.46+-0.11 | Cr I |
| Mn I | 2 | ... | ... | 1.80+-0.02 | -3.63+-0.02 | -0.72+-0.02 | 1.80+-0.02 | Mn I |
| Fe I | 43 | ... | ... | 4.59+-0.13 | -2.91+-0.13 | ... | 4.59+-0.13 | Fe I |
| Fe II | 5 | ... | ... | 4.67+-0.19 | -2.83+-0.19 | ... | 4.67+-0.19 | Fe II |
| Co I | 3 | ... | ... | 2.66+-0.17 | -2.33+-0.17 | 0.58+-0.17 | 2.66+-0.17 | Co I |
| Ni I | 1 | ... | ... | 3.29 | -2.93 | -0.02 | 3.29 | Ni I |
| Sr II | 1 | ... | ... | -1.55 | -4.42 | -1.51 | -1.55 | Sr II |
| Ba II | 1 | ... | ... | <-1.55 | <-3.73 | <-0.82 | <-1.55 | Ba II |
| Eu II | 1 | ... | ... | <-0.88 | <-1.40 | <1.51 | <-0.88 | Eu II |
Observing Log
| Date of Observation | JD | Facility | Resolution | S/N | Exposure Time | Vrad |
|---|
| 2001-09 | N/A | KECKHIRES | 45000 | >100 | 900 | N/A |
| Galactic Longitude (l) : N/A | Galactic Latitude (b) : N/A | Declination : -221918 | Right Ascension : 30605.4 |
G.Israelian et al.,ApJ, 551, 833, 2001 (A0046,ADS)
Oxygen in the Very Early Galaxy
Stellar Parameters
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 |
|---|
| O I | N/A | <-1.90 | <1.07 | ... | <-1.61 | <1.36 | <7.08 | O I |
| Fe | N/A | -2.97+-0.14 | ... | ... | -2.97+-0.14 | ... | 4.53+-0.14 | Fe |
Observing Log
| Date of Observation | JD | Facility | Resolution | S/N | Exposure Time | Vrad |
|---|
| 1998-10-06 | N/A | NOTSOFIN | 30000 | 80 | 6600 | N/A |
| 1999-12-04 | N/A | KECKHIRES | 60000 | 160 | 2400 | N/A |
| Galactic Longitude (l) : N/A | Galactic Latitude (b) : N/A | Declination : N/A | Right Ascension : N/A |
E.Arnone et al.,AAP, 430, 507, 2005 (A0075,ADS)
Mg abundances in metal-poor halo stars as a tracer of early Galactic mixing
Stellar Parameters
| Teff : 6050 | log g : 4.3+-0.2 | vturb : 1.0+-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 |
|---|
| Mg I | 3 | -2.69+-0.06 | 0.37+-0.06 | ... | -2.71+-0.06 | 0.35+-0.06 | 4.89+-0.06 | Mg I |
| Ti I | 1 | -2.46 | ... | ... | -2.39 | 0.67 | 2.56 | Ti I |
| Cr I | 1 | -3.20 | ... | ... | -3.17 | -0.11 | 2.47 | Cr I |
| Fe I | 9 | -3.06+-0.03 | ... | ... | -3.06+-0.03 | ... | 4.44+-0.03 | Fe I |
Observing Log
| Date of Observation | JD | Facility | Resolution | S/N | Exposure Time | Vrad |
|---|
| N/A | ANGLO | 40000 | >100 | N/A | N/A |
| Galactic Longitude (l) : N/A | Galactic Latitude (b) : N/A | Declination : N/A | Right Ascension : N/A |
J.A.Rich et al.,ApJ, 701, 1519, 2009 (A0203,ADS)
BERYLLIUM, OXYGEN, AND IRON ABUNDANCES IN EXTREMELY METAL-DEFICIENT STARS
Stellar Parameters
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 |
|---|
| Be II | N/A | ... | ... | <-0.90+-0.12 | <-2.28+-0.12 | <0.78+-0.12 | <-0.90+-0.12 | Be II |
| OH | N/A | -2.45+-0.13 | ... | ... | -2.27+-0.13 | 0.79+-0.13 | 6.42+-0.13 | OH |
| Fe | N/A | -3.06+-0.11 | ... | ... | -3.06+-0.11 | ... | 4.44+-0.11 | Fe |
Observing Log
| Date of Observation | JD | Facility | Resolution | S/N | Exposure Time | Vrad |
|---|
| 2008-01-16 | N/A | KECKHIRES | 48000 | 52 | 5400 | N/A |
| Galactic Longitude (l) : N/A | Galactic Latitude (b) : N/A | Declination : -2219 | Right Ascension : 0306 |
J.Melendez et al.,AAP, 515, L3, 2010 (A0235,ADS)
Observational evidence for a broken Li Spite plateau and mass-dependent Li depletion
Stellar Parameters
| Teff : 6414+-50 | log g : 4.49 |
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 |
|---|
| Li | N/A | ... | ... | 2.28+-0.035 | -0.98+-0.035 | 1.96+-0.035 | 2.28+-0.035 | Li |
| Fe | N/A | -2.94 | ... | ... | -2.94 | ... | 4.56 | Fe |
Observing Log
| Date of Observation | JD | Facility | Resolution | S/N | Exposure Time | Vrad |
|---|
| N/A | N/A | VLT | 110000 | >100 | N/A | N/A |
| Galactic Longitude (l) : N/A | Galactic Latitude (b) : N/A | Declination : N/A | Right Ascension : N/A |
D.Fabbian et al.,AAP, 500, 1143, 2009 (A0266,ADS)
The C/O ratio at low metallicity:constraints on early chemical evolution from observations of Galactic halo stars
Stellar Parameters
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 |
|---|
| C | N/A | <-2.62 | ... | <5.77 | <-2.66 | <0.32 | <5.77 | C |
| O | N/A | <-2.13 | ... | <6.53 | <-2.16 | <0.82 | <6.53 | O |
| Fe | N/A | -2.93 | ... | ... | -2.98 | ... | 4.52 | Fe |
Observing Log
| Date of Observation | JD | Facility | Resolution | S/N | Exposure Time | Vrad |
|---|
| 2003-12 | N/A | MIKELCO | 60000 | 40-380 | N/A | N/A |
| Galactic Longitude (l) : N/A | Galactic Latitude (b) : N/A | Declination : N/A | Right Ascension : N/A |