Exploring the Realm of Scaled Solar System Analogs with HARPS
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Lurking in the Shadows: Wide-Separation Gas Giants As Tracers of Planet Formation
Lurking in the Shadows: Wide-Separation Gas Giants as Tracers of Planet Formation Thesis by Marta Levesque Bryan In Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy CALIFORNIA INSTITUTE OF TECHNOLOGY Pasadena, California 2018 Defended May 1, 2018 ii © 2018 Marta Levesque Bryan ORCID: [0000-0002-6076-5967] All rights reserved iii ACKNOWLEDGEMENTS First and foremost I would like to thank Heather Knutson, who I had the great privilege of working with as my thesis advisor. Her encouragement, guidance, and perspective helped me navigate many a challenging problem, and my conversations with her were a consistent source of positivity and learning throughout my time at Caltech. I leave graduate school a better scientist and person for having her as a role model. Heather fostered a wonderfully positive and supportive environment for her students, giving us the space to explore and grow - I could not have asked for a better advisor or research experience. I would also like to thank Konstantin Batygin for enthusiastic and illuminating discussions that always left me more excited to explore the result at hand. Thank you as well to Dimitri Mawet for providing both expertise and contagious optimism for some of my latest direct imaging endeavors. Thank you to the rest of my thesis committee, namely Geoff Blake, Evan Kirby, and Chuck Steidel for their support, helpful conversations, and insightful questions. I am grateful to have had the opportunity to collaborate with Brendan Bowler. His talk at Caltech my second year of graduate school introduced me to an unexpected population of massive wide-separation planetary-mass companions, and lead to a long-running collaboration from which several of my thesis projects were born. -
Dynamics and Stability of Telluric Planets Within the Habitable Zone of Extrasolar Planetary Systems
A&A 488, 1133–1147 (2008) Astronomy DOI: 10.1051/0004-6361:200809822 & c ESO 2008 Astrophysics Dynamics and stability of telluric planets within the habitable zone of extrasolar planetary systems Numerical simulations of test particles within the HD 4208 and HD 70642 systems T. C. Hinse1,2, R. Michelsen1,U.G.Jørgensen1 ,K.Go´zdziewski3, and S. Mikkola4 1 Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Ø, Denmark e-mail: [tobiash; rm]@astro.ku.dk 2 Armagh Observatory, College Hill, BT61 9DG Armagh, Northern Ireland, UK 3 Nicolaus Copernicus University, Torun Centre for Astronomy, Gagarin Str. 11, 87-100 Torun, Poland 4 Turku University Observatory, Väisäläntie 20, Piikkiö, Finland Received 20 March 2008 / Accepted 3 June 2008 ABSTRACT Aims. We study gravitational perturbation effects of observed giant extrasolar planets on hypothetical Earth-like planets in the context of the three-body problem. This paper considers a large parameter survey of different orbital configuration of two extrasolar giant planets (HD 70642b and HD 4208b) and compares their dynamical effect on Earth-mass planetary orbits initially located within the respective habitable terrestrial region. We are interested in determining giant-planet orbit (and mass) parameters that favor the condi- tion to render an Earth-mass planet to remain on a stable and bounded orbit within the continuous habitable zone. Methods. We applied symplectic numerical integration techniques to studying the short and long term time evolution of hypothetical Earth-mass planets that are treated as particles. In addition, we adopt the MEGNO technique to obtain a complete dynamical picture of the terrestrial phase space environment. -