| Title | Extremely Metal-poor Stars. VII. The Most Metal-poor Dwarf, CS 22876-032 |
| ADS | J.E.Norris et al.,ApJ, 540, 456, 2000 |
| Authors | J. E. Norris, T. C. Beers, S. G. Ryan |
| Object | Comment | S | O |
|---|---|---|---|
| BPS CS22876-032A | N/A | S | O |
| BPS CS22876-032B | N/A | S | O |
S: Find this object in SIMBAD
O: Find this object in Other papers
| Teff : 6300 | log g : 4.5 | vturb : 1.4 |
| Element | Nline | [X/H] | [X/Fe] | log-e |
|---|---|---|---|---|
| Mg I | ... | -3.21+-0.12 | 0.50+-0.12 | 4.37+-0.12 |
| Al I | ... | -4.16+-0.12 | -0.45+-0.12 | 2.31+-0.12 |
| Si I | ... | -3.92+-0.13 | -0.21+-0.13 | 3.63+-0.13 |
| Ca I | ... | -3.70+-0.13 | +0.01+-0.13 | 2.66+-0.13 |
| Sc II | ... | <-3.44+-0.07 | <0.27+-0.07 | <-0.27+-0.07 |
| Ti II | ... | -3.63+-0.11 | 0.08+-0.11 | 1.39+-0.11 |
| Cr I | ... | <-3.93+-0.04 | <-0.22+-0.04 | <1.74+-0.04 |
| Mn I | ... | <-3.89+-0.04 | <-0.18+-0.04 | <1.50+-0.04 |
| Fe I | ... | -3.71 | ... | 3.79 |
| Co I | ... | <-2.46+-0.04 | <1.25+-0.04 | <2.46+-0.04 |
| Ni I | ... | <-3.71+-0.04 | <0.00+-0.04 | <2.54+-0.04 |
| Sr II | ... | <-4.36+-0.05 | <-0.65+-0.05 | <-1.39+-0.05 |
| Ba II | ... | <-3.33+-0.07 | <0.38+-0.07 | <-1.20+-0.07 |
| Binarity | Positive |
| Vrad | -93.36+-0.28 |
| Period | 424.71 |
| Observation Date | JD | Facility | Resolution | S/N | Exposure Time | Vrad |
|---|---|---|---|---|---|---|
| 1985-09-06 | 2446315.1 | N/A | N/A | -83.9+-2.0 | ||
| 1985-12-16 | 2446416.0 | N/A | N/A | -96.8+-2.0 | ||
| 1989-09-13 | 2447783.2 | ANGLO | 40000 | N/A | N/A | -107.8+-1.0 |
| 1989-10-16 | 2447815.7 | N/A | N/A | -103.1+-1.0 | ||
| 1989-12-06 | 2447867.0 | ANGLO | 40000 | N/A | N/A | -93.3+-1.0 |
| 1990-09-27 | 2448162.1 | ANGLO | 40000 | N/A | N/A | -109.6+-1.0 |
| 1991-08-22 | 2448490.5 | ANGLO | 40000 | N/A | N/A | -87.0+-2.0 |
| 1992-08-17 | 2448851.8 | N/A | N/A | -78.6+-1.0 | ||
| 1996-08-07 | 2450303.1 | ANGLO | 40000 | N/A | N/A | -110.2+-1.0 |
| 1997-08-23 | 2450683.8 | ANGLO | 40000 | N/A | N/A | -104.2+-1.0 |
| 1998-08-12 | 2451038.3 | ANGLO | 40000 | N/A | N/A | -87.8+-1.0 |
| 1999-07-29 | 2451388.7 | N/A | N/A | -77.0+-2.0 | ||
| 1999-09-23 | 2451444.6 | ANGLO | 40000 | N/A | N/A | -84.3+-1.0 |
| Galactic Longitude (l) : N/A | Galactic Latitude (b) : N/A | Declination : N/A | Right Ascension : N/A |
| B-V : 0.360 | V-R : 0.258 | R-I : 0.287 |
| Teff : 5600 | log g : 4.5 | vturb : 1.0 |
| Element | Nline | [X/H] | [X/Fe] | log-e |
|---|---|---|---|---|
| Mg I | ... | -3.20+-0.15 | 0.51+-0.15 | 4.38+-0.15 |
| Al I | ... | -4.13+-0.23 | -0.42+-0.23 | 2.34+-0.23 |
| Si I | ... | -3.42+-0.24 | 0.29+-0.24 | 4.13+-0.24 |
| Ca I | ... | -3.72+-0.24 | -0.01+-0.24 | 2.64+-0.24 |
| Ti II | ... | -3.48+-0.23 | 0.23+-0.23 | 1.54+-0.23 |
| Mn I | ... | <-3.97+-0.06 | <-0.26+-0.06 | <1.42+-0.06 |
| Fe I | ... | -3.71 | ... | 3.79 |
| Binarity | Positive |
| Vrad | -93.36+-0.28 |
| Period | 424.71 |
| Observation Date | JD | Facility | Resolution | S/N | Exposure Time | Vrad |
|---|---|---|---|---|---|---|
| 1989-09-13 | 2447783.2 | ANGLO | 40000 | N/A | N/A | -74.8+-1.0 |
| 1989-10-16 | 2447815.7 | N/A | N/A | -81.2+-1.0 | ||
| 1990-09-27 | 2448162.1 | ANGLO | 40000 | N/A | N/A | -76.2+-1.0 |
| 1992-08-17 | 2448851.8 | N/A | N/A | -107.6+-1.0 | ||
| 1996-08-07 | 2450303.1 | ANGLO | 40000 | N/A | N/A | -76.2+-1.0 |
| 1997-08-23 | 2450683.8 | ANGLO | 40000 | N/A | N/A | -81.3+-1.0 |
| 1998-08-12 | 2451038.3 | ANGLO | 40000 | N/A | N/A | -101.1+-1.0 |
| 1999-09-23 | 2451444.6 | ANGLO | 40000 | N/A | N/A | -105.5+-1.0 |
| Galactic Longitude (l) : N/A | Galactic Latitude (b) : N/A | Declination : N/A | Right Ascension : N/A |
| B-V : 0.515 | V-R : 0.345 | R-I : 0.375 |