All Tables

Table 1: Log of the observations for NGC 2808. Date is UT, andexposure times are in seconds.
Table 2: List and relevant information for the target stars observed in NGC 2808. ID, B, V, and coordinates (J2000) are taken from Bedin et al. (2000); J, K are from the 2MASS catalog; radial velocities RV's (in km s^-1) from both gratings are heliocentric; stars with "*'' in notes have V-K colours that deviate from the ones expected for RGB stars (see text). The complete table is available electronically; we show here a few lines for guidance.
Table 3: Adopted atmospheric parameters and derived iron abundances of RGB stars in NGC 2808; nr indicates the number of lines used in the analysis. The complete table is available in electronic form.
Table 4: Sensitivities of abundance ratios to variations in the atmospheric parameters and to errors in the equivalent widths, as computed for a typical program star with $T_{\rm eff} = 4500$ K. The total error is computed as the quadratic sum of the three dominant sources of error, $T_{\rm eff}$ , v_t, and errors in the ${\it EW}$ s (Col. 8: tot.1) or as the sum of all contributions (Col. 9: tot.2).
Table 5: Abundances of O and Na in NGC 2808. The [Na/Fe] values are corrected for departures from LTE, and HR is a flag for the grating used (1 = HR11 only, 2 = HR11 and HR13, 3 = HR13 only). Lim is a flag discriminating between real detections and upper limits in the O measurements (0 = upper limit, 1 = detection). The complete table is available electronically.
Table 6: References for the [O/Fe] and [Na/Fe] ratios from high resolution analyses in globular clusters used to derive the overall Na-O anticorrelation shape.
Full Version
Table 2: Information on the targets. B, V and coordinates at J2000 are taken from Bedin et al. (2000); J, K are from the 2MASS catalogue; RV's for both gratings are heliocentric; stars with "*'' in notes have V-K colours that deviate from the ones expected for RGB stars, and have to be taken with caution.
Table 3: Adopted atmospheric parameters and derived Iron abundances; nr indicates the number of lines used in the analysis.
Table 5: Abundances of O and Na in NGC 2808. [Na/Fe] values are corrected for departures from LTE. HR is a flag for the grating used for the observations (2 = HR 11 and HR 13, 1 = HR 11 only, 3 = HR 13 only). Lim is a flag for detection or upper limit in the O measurements (0 = upper limit, 1 = detection).