SDSS J013655.91+242546.0 – an A-type hyper-velocity star from the outskirts of the Galaxy

Free access article

Table 1:

Results of the spectroscopic and kinematic analysis of J0136+2425.
V (mag)^a	16.17 $\pm$ 0.02	E(B-V) (mag)^b	0.16 $\pm$ 0.02
$\mu_\alpha\cos(\delta)$ ( $\rm {mas~yr^{-1}}$ )	-2.2 $\pm$ 1.3	$\mu_\delta$ ( $\rm {mas~yr^{-1}}$ )	-8.2 $\pm$ 2.2
$T_{\rm eff}$ (K)	9100 $\pm$ 250	$\log{g}$ (cgs)	3.90 $\pm$ 0.15
[M/H]	0.0	$M/M_\odot$	2.45 $\pm$ 0.20
$v_{\rm rad}$ ( $\rm {km~s^{-1}}$ )	324.3 $\pm$ 5.9	$v_{\rm rot} \sin i$ ( $\rm {km~s^{-1}}$ )	250
d (kpc)	10.90 $\pm$ 2.00	$v_{\rm grf}$ ( $\rm {km~s^{-1}}$ )	$\rm 587 ^{+144}_{-89}$
$v_{\rm ej}$ ( $\rm {km~s^{-1}}$ )	551	$v_{\rm esc}$ ( $\rm {km~s^{-1}}$ )	466
TOF (Myr)	12 $\pm$ 1.3	$t_{\rm evol}$ (Myr)	245

^a The visual magnitude derived following Jordi et al. (2006); ^b The interstellar colour excess E(B-V) was determined by comparing the observed colours to synthetic ones from the model spectral energy distribution.

Source LaTeX | All tables | In the text