Hunting for Frozen Super-Earths via Microlensing (CROSBI ID 134878)
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Podaci o odgovornosti
Beaulieu, Jean-Philippe ; Albrow, Michael ; Bennett, Dave ; Brillang, Stéphane ; Caldwell, John A. R. ; Calitz, Johannes J. ; Cassan, Arnaud ; Cook, Kem H. ; Coutures, Christian ; Dieters, Stefan ; Dominik, Martin ; Dominis Prester, Dijana ; Donatowicz, Jadzia ; Fouqué, Pascal ; Greenhill, John ; Hill, Kym ; Hoffman, Matie ; Jø ; rgensen, Uffe G. ; Kane, Stephen ; Kubas, Daniel ; Marquette, Jean-Baptiste ; Martin, Ralph ; Meintjes, Pieter ; Menzies, John ; Pollard, Karen ; Sahu, Kailash ; Vinter, Christian ; Wambsganss, Joachim ; Williams, Andrew ; Woller, Kristian ; Zub, Marta ; Horne, Keith ; Allan, Alasdair ; Bode, Mike ; Bramich, Daniel M. ; Burgdorf, Martin ; Fraser, Stephen ; Mottram, Chris ; Rattenbury, Nicholas ; Snodgrass, Colin ; Steele, Iain ; Tsapras, Yiannis
engleski
Hunting for Frozen Super-Earths via Microlensing
In order to obtain a census of planets with masses in the range of Earth to Jupiter, eight telescopes are being used by the combined microlensing campaign of the PLANET and RoboNet collaborations for high-cadence photometric round-the-clock follow-up of ongoing events, alerted by the OGLE and MOA surveys. In 2005 we detected a planet of 5.5 Earth masses at 2.6 AU from its parent 0.22 MA M star. This object is the first member of a new class of cold telluric planets. Its detection confirms the power of this method and, given our detection efficiency, suggests that these recently-detected planets may be quite common around M stars, as confirmed by subsequent detection of a ~ 13 Earth-mass planet. Using a network of dedicated 1 2-m-class telescopes, we have entered a new phase of planet discovery, and will be able to provide constraints on the abundance of frozen Super-Earths in the near future.
Extrasolar planets; microlensing
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