2018/09/01 by A. Crida, Aurélien Crida, R. Ligi +6 · 2 citations
Engineering · Physics and Astronomy · #Algorithm #Astro and Planetary Science #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Computational physics #Computer science #Engineering #Envelope (radar) #Exoplanet #Interferometry #Operating system #Physics #Pipeline (software) #Planet #RADIUS #Stellar, planetary, and galactic studies #Telecommunications #Transit (satellite) #astro-ph.EP #astro-ph.SR
paper · pdf · doi:10.3847/2515-5172/aae1f6
published as 2018, Research Notes of the American Astronomical Society, vol. 2, number 3, 172 · 3 pages, 1 figure, published in Research Notes of the American Astronomical Society
openalex publication_date 2018/09/01 · arxiv created 2018/09/21 · arxiv updated 2018/09/24 · openalex created_date 2018/09/27 · openalex updated_date 2026/08/05
In a recent paper (Crida et al. 2018, accepted on April 19), we presented a method to derive the mass and radius of a transiting exoplanet and their intrinsic correlation, that we applied to 55 Cnc e. We wrote: "More precise observations of the transit would be very useful in this particular case and would allow to increase significantly the gain on the planetary density precision." Three months later, Bourrier et al. (2018) published new observations of the system. Additionally, Gaia's DR2 was released on April 25, 2018. The purpose of this research note is solely to implement these precise new data in our pipeline to provide an up-to-date result of our model. We find Rp = 1.947± 0.038 R_⊕ and Mp = 8.59± 0.43 M_⊕. We also double the precision on the planetary density (ρp = 1.164± 0.062 ρ_⊕), which allows us to refine the estimates for all interior parameters of interest. In particular, we now find that the radius of the gaseous envelope is 0.03± 0.02 Rp.