A0246

Bibliography Data

Title First stars. XIII. Two extremely metal-poor RR Lyrae stars
ADS C.J.Hansen et al.,AAP, 527, A65, 2011
Authors C. J. Hansen, B. Nordstrom, P. Bonifacio, M. Spite, J. Andersen, T. C. Beers, R. Cayrel, F. Spite, P. Molaro, B. Barbuy, E. Depagne, P. Francois, V. Hill, B. Plez, T. Sivarani

List of objects

Object Comment S O
BPS CS22881-039 N/A S O
BPS CS30317-056 N/A S O

S: Find this object in SIMBAD
O: Find this object in Other papers

BPS CS22881-039

Atmospheric data

Teff : 5950+-150 log g : 2.10+-0.3 vturb : 3.0+-0.1

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
Li...<-0.56<2.19<0.6
CH...<-2.06<0.69<6.49
Na I...-2.88+-0.15-0.13+-0.153.45+-0.15
Mg I...-2.05+-0.30.70+-0.305.53+-0.3
Al I...-3.49+-0.05-0.74+-0.052.98+-0.05
Si I...-2.74+-0.050.01+-0.054.81+-0.05
Ca...-2.46+-0.30.29+-0.303.90+-0.3
Sc II...-2.64+-0.060.11+-0.060.53+-0.06
Ti I...-2.37+-0.250.38+-0.252.65+-0.25
Ti II...-2.40+-0.250.35+-0.252.62+-0.25
Cr I...-3.07+-0.12-0.32+-0.122.60+-0.12
Mn I...-3.34+-0.05-0.59+-0.052.05+-0.05
Fe...-2.75+-0.19...4.75+-0.19
Co I...-2.61+-0.140.14+-0.142.31+-0.14
Ni I...-2.94+-0.07-0.19+-0.073.31+-0.07
Sr II...-2.75+-0.150.00+-0.150.22+-0.15
Ba II...-3.37+-0.09-0.62+-0.09-1.24+-0.09
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)

Binarity

Vrad 90.0

Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
2001-06-01 2452061.8657 VLT 43000 N/A 4800 +90.0
Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A Declination : N/A Right Ascension : N/A

Photometric data

V : 15.1

BPS CS30317-056

Atmospheric data

Teff : 6000+-200 log g : 2.00+-0.25 vturb : 3.0+-0.1

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
Li...<-0.16<2.69<1.0
CH...<-2.06<0.79<6.49
O I...-1.95+-0.240.9+-0.246.92+-0.24
Mg I...-2.37+-0.150.48+-0.155.21+-0.15
Al I...-3.51+-0.15-0.66+-0.152.96+-0.15
Si I...-2.80+-0.050.05+-0.054.75+-0.05
S I...-2.07+-0.070.78+-0.075.26+-0.07
Ca...-2.45+-0.130.4+-0.133.91+-0.13
Sc II...-2.71+-0.060.14+-0.060.46+-0.06
Ti I...-2.22+-0.160.63+-0.162.80+-0.16
Ti II...-2.30+-0.120.55+-0.122.72+-0.12
Cr I...-3.03+-0.05-0.18+-0.052.64+-0.05
Mn I...-3.48+-0.05-0.63+-0.051.91+-0.05
Fe...-2.85+-0.15...4.65+-0.15
Co I...-2.58+-0.060.27+-0.062.34+-0.06
Ni I...-2.98+-0.05-0.13+-0.053.27+-0.05
Sr II...-2.82+-0.10.03+-0.100.15+-0.1
Ba II...-3.17+-0.05-0.32+-0.05-1.04+-0.05
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)

Binarity

Vrad -62.9

Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
2000-08-09 2451766.4703 VLT 43000 N/A 3600 -62.9
2001-05-31 2452061.497 VLT 43000 N/A 3600 -53.0
2001-06-01 2452061.5864 VLT 43000 N/A 3600 -45.3
2001-06-01 2452061.6323 VLT 43000 N/A 3600 -41.6
2001-06-02 2452062.7195 VLT 43000 N/A 600 -51.4
Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A Declination : N/A Right Ascension : N/A

Photometric data

V : 14.0