2014ApJ...792L..31L

Query : 2014ApJ...792L..31L

2014ApJ...792L..31L - Astrophys. J., 792, L31 (2014/September-2)

Rossiter-McLaughlin observations of 55 Cnc e.

LOPEZ-MORALES M., TRIAUD A.H.M.J., RODLER F., DUMUSQUE X., BUCHHAVE L.A., HARUTYUNYAN A., HOYER S., ALONSO R., GILLON M., KAIB N.A., LATHAM D.W., LOVIS C., PEPE F., QUELOZ D., RAYMOND S.N., SEGRANSAN D., WALDMANN I.P. and UDRY S.

Abstract (from CDS):

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 (3σ) and confine the stellar v sin i{sstarf} 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.

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Journal keyword(s): planets and satellites: formation - planets and satellites: individual: 55 Cancri e - stars: individual: 55 Cancri - techniques: radial velocities - techniques: spectroscopic

VizieR on-line data: <Available at CDS (J/ApJ/792/L31): table1.dat>

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 * rho01 Cnc EB* 08 52 35.8111044043 +28 19 50.954994470 7.45 6.82   5.4   K0IV-V 1121 1
2 * rho01 Cnc e Pl 08 52 35.8111044043 +28 19 50.954994470           ~ 576 1
3 Ross 905 PM* 11 42 11.0933350978 +26 42 23.650782778   12.06 10.613 10.272 8.24 M3V 645 1
4 Kepler-50 Er* 19 12 24.2128368312 +50 02 01.374741852   11.02 10.54 10.387   F5 106 1
5 BD+40 3638 Er* 19 14 45.2915908224 +41 09 04.210237980   11.643 11.115 11.009   F6IV 124 1
6 BD+47 2936b Pl 19 50 50.2472976936 +48 04 51.101390496           ~ 416 1
7 WASP-80b Pl 20 12 40.1693365800 -02 08 39.187438476           ~ 120 1

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