Rossiter-McLaughlin observations of 55 Cnc e
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Rossiter-McLaughlin observations of 55 Cnc e. / Lopez-Morales, Mercedes; Triaud, Amaury H. M. J.; Rodler, Florian; Dumusque, Xavier; Buchhave, Lars A.; Harutyunyan, Avet; Hoyer, Sergio; Alonso, Roi; Gillon, Michael; Kaib, Nathan A.; Latham, David. W.; Lovis, Christophe; Pepe, Francesco; Queloz, Didier; Raymond, Sean N.; Segransan, Damien; Waldmann, Ingo P.; Udry, Stephane.
In: The Astrophysical Journal Letters, Vol. 792, No. 2, L31, 2014.Research output: Contribution to journal › Journal article › Research › peer-review
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T1 - Rossiter-McLaughlin observations of 55 Cnc e
AU - Lopez-Morales, Mercedes
AU - Triaud, Amaury H. M. J.
AU - Rodler, Florian
AU - Dumusque, Xavier
AU - Buchhave, Lars A.
AU - Harutyunyan, Avet
AU - Hoyer, Sergio
AU - Alonso, Roi
AU - Gillon, Michael
AU - Kaib, Nathan A.
AU - Latham, David. W.
AU - Lovis, Christophe
AU - Pepe, Francesco
AU - Queloz, Didier
AU - Raymond, Sean N.
AU - Segransan, Damien
AU - Waldmann, Ingo P.
AU - Udry, Stephane
PY - 2014
Y1 - 2014
N2 - We present Rossiter-McLaughlin observations of the transiting super-Earth 55 Cnc e collected during six transit events between 2012 January and 2013 November with HARPS and HARPS-N. We detect no radial velocity signal above 35 cm s–1 (3σ) and confine the stellar v sin i to 0.2 ± 0.5 km s–1. 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.
AB - We present Rossiter-McLaughlin observations of the transiting super-Earth 55 Cnc e collected during six transit events between 2012 January and 2013 November with HARPS and HARPS-N. We detect no radial velocity signal above 35 cm s–1 (3σ) and confine the stellar v sin i to 0.2 ± 0.5 km s–1. 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.
U2 - 10.1088/2041-8205/792/2/L31
DO - 10.1088/2041-8205/792/2/L31
M3 - Journal article
VL - 792
JO - The Astrophysical Journal Letters
JF - The Astrophysical Journal Letters
SN - 2041-8205
IS - 2
M1 - L31
ER -
ID: 139969380