Showing results 1 to 20 of 42
   Evidence for short-term variations in two O-type starsDe Becker, Michaël  ; Linder, Natacha ; Rauw, Grégor in Information Bulletin on Variable Stars (2008), 5841 Only a few O-type stars are known to display short-term (a fraction of a day) variations. Intense spectroscopic monitoring of the ON8V star HD 13268 revealed low amplitude variations with periods of ... [more ▼] Only a few O-type stars are known to display short-term (a fraction of a day) variations. Intense spectroscopic monitoring of the ON8V star HD 13268 revealed low amplitude variations with periods of several hours. In addition, observations of the SB1 system HD 15137 revealed variations on a time scale of a few hours. We consider these stars to be a good candidates for non radial pulsations, even though variations related to inhomogeneities in a circumstellar disk can not be rejected. [less ▲] Detailed reference viewed: 17 (4 ULg) Long-term Spectroscopic Variability of Two Oe StarsRauw, Grégor ; Nazé, Yaël ; et alin Information Bulletin on Variable Stars (2007), 5773 HD 45314 and HD 60848 are poorly studied Oe-type stars. Spectroscopic monitoring over 5 years reveals strong variations in the strength of the emission lines and for HD 45314 in the V/R ratio of the ... [more ▼] HD 45314 and HD 60848 are poorly studied Oe-type stars. Spectroscopic monitoring over 5 years reveals strong variations in the strength of the emission lines and for HD 45314 in the V/R ratio of the double-peaked emissions. Part of these long-term variations could be recurrent. [less ▲] Detailed reference viewed: 22 (2 ULg)New light on the peculiar star HD108Nazé, Yaël ; ; et alin Information Bulletin on Variable Stars (2006), 5693 HD 108 is a peculiar massive star of type Of?p, which present recurrent line profile variations. Archival data confirm the very long (50-60 yr) period of this star. Recent data show that the minimum state ... [more ▼] HD 108 is a peculiar massive star of type Of?p, which present recurrent line profile variations. Archival data confirm the very long (50-60 yr) period of this star. Recent data show that the minimum state is not yet reached. [less ▲] Detailed reference viewed: 27 (1 ULg)HR 7674: a low-amplitude cepheid?Manfroid, Jean ; Renson, Pierre ; in Information Bulletin on Variable Stars (1997), 4453 Not Available Detailed reference viewed: 7 (0 ULg)A flare event on HR2517; Manfroid, Jean in Information Bulletin on Variable Stars (1994), 4120 Not Available Detailed reference viewed: 4 (0 ULg)Variations of the Ap Stars in NGC2169Manfroid, Jean ; Renson, Pierre in Information Bulletin on Variable Stars (1994), 4044 Not Available Detailed reference viewed: 2 (0 ULg)Wich is the Star V380 Per?Renson, Pierre in Information Bulletin on Variable Stars (1993), 3887 Not Available Detailed reference viewed: 4 (2 ULg)HD 35155: the First Eclipsing Binary S Star (P=642 Days); ; Manfroid, Jean et alin Information Bulletin on Variable Stars (1992), 3730 Not Available Detailed reference viewed: 5 (0 ULg)Nature of the Variability of VV SclRenson, Pierre in Information Bulletin on Variable Stars (1991), 3568 Not Available Detailed reference viewed: 2 (0 ULg)WR 22 is an Eclipsing Binary StarGosset, Eric ; ; Manfroid, Jean et alin Information Bulletin on Variable Stars (1991), 3571 Not Available Detailed reference viewed: 3 (0 ULg)TV Nor, another Eclipsing Ap StarRenson, Pierre in Information Bulletin on Variable Stars (1990), 3452 Not Available Detailed reference viewed: 4 (0 ULg)The May-July 1989 Crisis of V348 SgrManfroid, Jean ; Houziaux, Léo in Information Bulletin on Variable Stars (1989), 3375 Not Available Detailed reference viewed: 4 (0 ULg)On the Light Curve of HD 27563Manfroid, Jean in Information Bulletin on Variable Stars (1989), 3297 Not Available Detailed reference viewed: 2 (0 ULg)Photometric Observations of WR78 = HD 151932Magain, Pierre ; Vreux, Jean-Marie ; Manfroid, Jean in Information Bulletin on Variable Stars (1987), 3022 Not Available Detailed reference viewed: 2 (0 ULg)Photometry of the G8V Star HD 192020Vreux, Jean-Marie ; Manfroid, Jean in Information Bulletin on Variable Stars (1985), 2822 Not Available Detailed reference viewed: 8 (0 ULg)Photometry of the Wolf-Rayet Star HD 191765Vreux, Jean-Marie ; Manfroid, Jean in Information Bulletin on Variable Stars (1985), 2821 Not Available Detailed reference viewed: 4 (0 ULg)Is HD 23878 A Mild CP Star?; Manfroid, Jean ; in Information Bulletin on Variable Stars (1985), 2738 Not Available Detailed reference viewed: 4 (1 ULg)Etoiles à Helium Faible Photométriquement VariablesRenson, Pierre in Information Bulletin on Variable Stars (1985), 2708 Not Available Detailed reference viewed: 1 (0 ULg)On the He Weak Variable HD 28843Manfroid, Jean ; ; in Information Bulletin on Variable Stars (1984), 2625 Not Available Detailed reference viewed: 4 (0 ULg)The Bright Eclipsing Binary HD 208496Manfroid, Jean ; in Information Bulletin on Variable Stars (1984), 2616 Not Available Detailed reference viewed: 5 (0 ULg) |
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