Reference : Rossiter-McLaughlin Observations of 55 Cnc e
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
Rossiter-McLaughlin Observations of 55 Cnc e
Lopez-Morales, Mercedes [> >]
Triaud, Amaury H. M. J. [> >]
Rodler, Florian [> >]
Dumusque, Xavier [> >]
Buchhave, Lars A. [> >]
Harutyunyan, A. [> >]
Hoyer, Sergio [> >]
Alonso, Roi [> >]
Gillon, Michaël mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa) >]
Kaib, Nathan A. [> >]
Latham, David W. [> >]
Lovis, Christophe [> >]
Pepe, Francesco [> >]
Queloz, Didier [> >]
Raymond, Sean N. [> >]
Segransan, Damien [> >]
Waldmann, Ingo P. [> >]
Udry, Stephane [> >]
Astrophysical Journal. Letters
IOP Publishing
sous presse
Yes (verified by ORBi)
United Kingdom
[en] Astrophysics - Earth and Planetary Astrophysics
[en] We present Rossiter-McLaughlin observations of the transiting super-Earth 55 Cnc e collected during six transit events between January 2012 and November 2013 with HARPS and HARPS-N. We detect no radial-velocity signal above 35 cm/s (3-sigma) and confine the stellar v sin i to 0.2 +/- 0.5 km/s. The star appears to be a very slow rotator, producing a very low amplitude Rossiter-McLaughlin effect. Given such a low amplitude, the Rossiter-McLaughlin effect of 55 Cnc e is undetected in our data, and any spin-orbit angle of the system remains possible. We also performed Doppler tomography and reach a similar conclusion. Our results offer a glimpse of the capacity of future instrumentation to study low amplitude Rossiter-McLaughlin effects produced by super-Earths.
Accepted for publication in ApJ Letters

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