![]() |
Figure 1: Radial velocity curve for Cen X-4 computed using a K7 V template. Observations were performed on 26 (triangles), 27 (dots) and 28 (stars) May 2001. Two phases are shown for clarity. The best sine-wave fit is also shown (see Sect. 4.1). |
Open with DEXTER |
![]() |
Figure 2: Doppler-corrected average of the 30 spectra of Cen X-4 in quiescence that were obtained and analyzed in the present study ( top spectrum) compared with a K5 V template (61 Cyg A). Arbitrary vertical offsets have been applied for clarity. |
Open with DEXTER |
![]() |
Figure 3: Variation of fractional contribution f of the companion star with orbital phase. Observations were performed on 26 (triangles), 27 (dots) and 28 (stars) May 2001. Two cycles are shown for clarity. |
Open with DEXTER |
![]() |
Figure 4:
Doppler maps of the H![]() ![]() ![]() |
Open with DEXTER |
![]() |
Figure 5:
Doppler maps of the H![]() ![]() ![]() |
Open with DEXTER |