SIMBAD references

2011AJ....141...63W - Astron. J., 141, 63 (2011/February-0)

Orbital orientations of exoplanets: HAT-P-4b is prograde and HAT-P-14b is retrograde.

WINN J.N., HOWARD A.W., JOHNSON J.A., MARCY G.W., ISAACSON H., SHPORER A., BAKOS G.A., HARTMAN J.D., HOLMAN M.J., ALBRECHT S., CREPP J.R. and MORTON T.D.

Abstract (from CDS):

We present observations of the Rossiter-McLaughlin effect for two exoplanetary systems, revealing the orientations of their orbits relative to the rotation axes of their parent stars. HAT-P-4b is prograde, with a sky-projected spin-orbit angle of λ = -4.9±11.9 deg. In contrast, HAT-P-14b is retrograde, with λ = 189.1±5.1 deg. These results conform with a previously noted pattern among the stellar hosts of close-in giant planets: hotter stars have a wide range of obliquities and cooler stars have low obliquities. This, in turn, suggests that three-body dynamics and tidal dissipation are responsible for the short-period orbits of many exoplanets. In addition, our data revealed a third body in the HAT-P-4 system, which could be a second planet or a companion star.

Abstract Copyright:

Journal keyword(s): planetary systems - planets and satellites: formation - planet-star interactions - stars: rotation

VizieR on-line data: <Available at CDS (J/AJ/141/63): table1.dat table2.dat>

Simbad objects: 12

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2021.07.24-08:20:45

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