Observational consequences of the recently proposed Super-Earth orbiting GJ 436
نویسندگان
چکیده
منابع مشابه
Observational Consequences of the Recently Proposed Super - Earth Orbiting GJ 436
Ribas and collaborators have recently proposed that an additional, ∼ 5 M ⊕ planet orbits the transiting planet host star GJ 436. Long-term dynamical interactions between the two planets leading to eccentricity excitation might provide an explanation for the transiting planet's unexpectedly large orbital eccentricity. In this paper we examine whether the existence of such a second planet is supp...
متن کاملL etter to the E ditor Observational Consequences of the Recently Proposed Super - Earth Orbiting GJ 436
Ribas and collaborators have recently proposed that an additional, ∼ 5 M ⊕ planet orbits the transiting planet host star GJ 436. Long-term dynamical interactions between the two planets leading to eccentricity excitation might provide an explanation for the transiting planet's unexpectedly large orbital eccentricity. In this paper we examine whether the existence of such a second planet is supp...
متن کاملThe M Dwarf GJ 436 and its Neptune - Mass Planet
We determine stellar parameters for the M dwarf GJ 436 that hosts a Neptunemass planet. We employ primarily spectral modeling at low and high resolution, examining the agreement between model and observed optical spectra of five comparison stars of type, M0-M3. Modeling high resolution optical spectra suffers from uncertainties in TiO transitions, affecting the predicted strengths of both atomi...
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We present time series photometry for six partial transits of GJ 436b obtained with the Fine Guidance Sensor instrument on the Hubble Space Telescope (HST). Our analysis of these data yields independent estimates of the host star's radius R ⋆ = 0.505
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GJ 581 update: Additional evidence for a Super-Earth in the habitable zone" (2012). Key words methods: numerical – planetary systems –stars: individual (GJ 581, HIP 74995) – techniques: radial velocities We present an analysis of the significantly expanded HARPS 2011 radial velocity data set for GJ 581 that was presented by Forveille et al. (2011). Our analysis reaches substantially different c...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2008
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:200810278