SAGA_UMaII_000012
Original Names
18 in L.C.Vargas+,ApJ, 767, 134, 2013UMaII-S2 in A.Frebel+,ApJ, 708, 560, 2010
taken from 2 paper(s):
/A.Frebel et al.(2010)/
/L.C.Vargas et al.(2013)/
High-Resolution Spectroscopy of Extremely Metal-Poor Stars in the Least Evolved Galaxies: Ursa Major II and Coma Berenices
Stellar Parameters
| Teff : 4600 | log g : 0.6 | vturb : 2.5 |
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 | 2 | -2.69+-0.20 | 0.54+-0.20 | 5.70+-0.20 | -2.73+-0.20 | 0.55+-0.20 | 5.70+-0.20 | C |
| O I | 1 | <-0.82 | <2.41 | <7.84 | <-0.85 | <2.43 | <7.84 | O I |
| Na I | 2 | -3.24+-0.30 | -0.01+-0.30 | 2.93+-0.30 | -3.31+-0.30 | -0.03+-0.30 | 2.93+-0.30 | Na I |
| Mg I | 5 | -2.76+-0.15 | 0.47+-0.15 | 4.77+-0.15 | -2.83+-0.15 | 0.45+-0.15 | 4.77+-0.15 | Mg I |
| Al I | 1 | <-1.12 | <2.11 | <5.25 | <-1.20 | <2.08 | <5.25 | Al I |
| Si I | 1 | <-1.77 | <1.46 | <5.74 | <-1.77 | <1.51 | <5.74 | Si I |
| Ca I | 12 | -2.85+-0.19 | 0.38+-0.19 | 3.46+-0.19 | -2.88+-0.19 | 0.40+-0.19 | 3.46+-0.19 | Ca I |
| Sc II | 2 | -3.35+-0.18 | -0.12+-0.18 | -0.30+-0.18 | -3.45+-0.18 | -0.17+-0.18 | -0.30+-0.18 | Sc II |
| Ti I | 5 | -2.97+-0.24 | 0.26+-0.24 | 1.93+-0.24 | -3.02+-0.24 | 0.26+-0.24 | 1.93+-0.24 | Ti I |
| Ti II | 16 | -3.10+-0.23 | 0.13+-0.23 | 1.80+-0.23 | -3.15+-0.23 | 0.13+-0.23 | 1.80+-0.23 | Ti II |
| V I | 1 | <-2.63 | <0.60 | <1.37 | <-2.56 | <0.72 | <1.37 | V I |
| Cr I | 3 | -3.73+-0.25 | -0.50+-0.25 | 1.91+-0.25 | -3.73+-0.25 | -0.45+-0.25 | 1.91+-0.25 | Cr I |
| Mn I | 1 | <-2.99 | <0.24 | <2.40 | <-3.03 | <0.25 | <2.40 | Mn I |
| Fe I | 64 | -3.23+-0.16 | ... | 4.22+-0.16 | -3.28+-0.16 | ... | 4.22+-0.16 | Fe I |
| Fe II | 6 | -3.17+-0.23 | 0.06+-0.23 | 4.28+-0.23 | -3.22+-0.23 | 0.06+-0.23 | 4.28+-0.23 | Fe II |
| Co I | 1 | <-2.33 | <0.90 | <2.59 | <-2.40 | <0.88 | <2.59 | Co I |
| Ni I | 1 | <-2.65 | <0.58 | <3.58 | <-2.64 | <0.64 | <3.58 | Ni I |
| Cu I | 1 | <-2.61 | <0.62 | <1.60 | <-2.59 | <0.69 | <1.60 | Cu I |
| Zn I | 1 | -3.18+-0.20 | 0.05+-0.20 | 1.42+-0.20 | -3.14+-0.20 | 0.14+-0.20 | 1.42+-0.20 | Zn I |
| Sr II | 1 | -4.22+-0.30 | -0.99+-0.30 | -1.30+-0.30 | -4.17+-0.30 | -0.89+-0.30 | -1.30+-0.30 | Sr II |
| Y II | 1 | <-3.48 | <-0.25 | <-1.27 | <-3.48 | <-0.20 | <-1.27 | Y II |
| Zr II | 1 | <-3.02 | <0.21 | <-0.43 | <-3.01 | <0.27 | <-0.43 | Zr II |
| Ba II | 2 | -4.37+-0.30 | -1.14+-0.30 | -2.20+-0.30 | -4.38+-0.30 | -1.10+-0.30 | -2.20+-0.30 | Ba II |
| La II | 1 | <-2.98 | <0.25 | <-1.85 | <-2.95 | <0.33 | <-1.85 | La II |
| Ce II | 1 | <-3.07 | <0.16 | <-1.49 | <-3.07 | <0.21 | <-1.49 | Ce II |
| Nd II | 1 | <-2.66 | <0.57 | <-1.21 | <-2.63 | <0.65 | <-1.21 | Nd II |
| Sm II | 1 | <-2.54 | <0.69 | <-1.53 | <-2.49 | <0.79 | <-1.53 | Sm II |
| Eu II | 1 | <-2.72 | <0.51 | <-2.20 | <-2.72 | <0.56 | <-2.20 | Eu II |
Binary Parameters
Position
| Right Ascension : 08 52 33.50 | Declination : +63 05 01.33 | Galactic Longitude (l) : N/A | Galactic Latitude (b) : N/A |
Observing Log
| Date of Observation | JD | Facility | Resolution | S/N | Exposure Time | Vrad |
|---|
| 2454519.8 | KECKHIRES | 37000 | 37 | 10800 | -110.6+-0.3 |
The Distribution of Alpha Elements in Ultra-faint Dwarf Galaxies
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 |
|---|
| Si | N/A | ... | +1.10+0.18-0.21 | ... | -1.80+0.18-0.21 | 1.10+0.18-0.21 | 5.71+0.18-0.21 | Si |
| Ca | N/A | ... | -0.07+0.24-0.38 | ... | -2.97+0.24-0.38 | -0.07+0.24-0.38 | 3.37+0.24-0.38 | Ca |
| Ti | N/A | ... | +0.52+0.25-0.49 | ... | -2.38+0.25-0.49 | 0.52+0.25-0.49 | 2.57+0.25-0.49 | Ti |
| Fe | N/A | -2.90+-0.16 | ... | ... | -2.90+-0.16 | ... | 4.60+-0.16 | Fe |
Position
| Right Ascension : 08 52 33.50 | Declination : +63 05 01.3 | Galactic Longitude (l) : N/A | Galactic Latitude (b) : N/A |
Observing Log
| Date of Observation | JD | Facility | Resolution | S/N | Exposure Time | Vrad |
|---|
| N/A | KECKIIDEIMOS | 6000 | N/A | N/A | N/A |