Details

Autor(en) / Beteiligte

• Fruth, T.
• Cabrera, J.
• Csizmadia, Sz
• Dreyer, C.
• Eigmüller, P.
• Erikson, A.
• Kabath, P.
• Pasternacki, T.
• Rauer, H.
• Titz-Weider, R.
• Abe, L.
• Agabi, A.
• Gonçalves, I.
• Guillot, T.
• Mékarnia, D.
• Rivet, J.-P.
• Crouzet, N.
• Chini, R.
• Lemke, R.
• Murphy, M.

Titel

Transit Search from Antarctica and Chile-Comparison and Combination

Ist Teil von

• Publications of the Astronomical Society of the Pacific, 2014-03, Vol.126 (937), p.227-242

Ort / Verlag

University of Chicago Press

Erscheinungsjahr

2014

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Observing sites at the east-Antarctic plateau are considered to provide exceptional conditions for astronomy. The aim of this work is to assess its potential for detecting transiting extrasolar planets through a comparison and combination of photometric data from Antarctica with time series from a midlatitude site. During 2010, the two small aperture telescopes ASTEP 400 (Dome C) and BEST II (Chile) together performed an observing campaign of two target fields and the transiting planet WASP-18b. For the latter, a bright star, Dome C appears to yield an advantageous signal-to-noise ratio. For field surveys, both Dome C and Chile appear to be of comparable photometric quality. However, within two weeks, observations at Dome C yield a transit detection efficiency that typically requires a whole observing season in Chile. For the first time, data from Antarctica and Chile have been combined to extent the observational duty cycle. This approach is both feasible in practice and favorable for transit search, as it increases the detection yield by 12-18%.