Letter to the Editor
The occultation events of the Herbig Ae/Be star V1247 Orionis*
1
Centro de Astrobiología (CSIC-INTA), Carretera de Ajalvir km 4,
28850 Torrejón de Ardoz, Madrid, Spain e-mail: caballero@astrax.fis.ucm.es
2
Departamento de Astrofísica y Ciencias de la Atmósfera, Facultad de
Física, Universidad Complutense de Madrid,
28040 Madrid, Spain
Received:
7
January
2010
Accepted:
16
February
2010
Aims. I study new deep (
–1.65 mag) occultation events of the
δ Scuti, Herbig Ae/Be star V1247 Ori in the Ori OB1 b association.
Methods. I use the V-band ASAS light curve of V1247 Ori, which covers the last nine years, together with photometric data in the near-ultraviolet, visible, near-, and far-infrared taken from the literature. I carry out a periodogram analysis of the “cleaned” light curve and construct the spectral energy distribution of the star.
Results. The star V1247 Ori is interesting for the study of the UX Orionis phenomenon,
in which Herbig Ae/Be stars are occulted by their protoplanetary discs, for
three reasons: brightness (
mag), large infrared excess at
20–100 μm (
Jy), and photometric stability out of
occultation (
mag), which may help to determine the
location and spatial structure of the occulting disc clumps.
Key words: astronomical databases: miscellaneous / protoplanetary disks / stars: individual: V1247 Ori / stars: pre-main sequence / stars: variables: δ Scuti / stars: variables: T Tauri, Herbig Ae/Be
Figure 4 is only available in electronic form at http://www.aanda.org
© ESO, 2010