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A Survey Of Stellar Families: Multiplicity Of Solar-Type Stars, Deepak Raghavan
A Survey Of Stellar Families: Multiplicity Of Solar-Type Stars, Deepak Raghavan
Physics and Astronomy Dissertations
I present the results of a comprehensive assessment of companions to 454 solar-type stars within 25 pc. New observational aspects of this work include surveys for (1) very close companions with long-baseline interferometry at the Center for High Angular Resolution Astronomy (CHARA) Array, (2) close companions with speckle interferometry, and (3) wide proper motion companions identified by blinking multi-epoch archival images. I have also obtained and included unpublished results from extensive radial velocity monitoring programs. The many sources utilized enable a thorough evaluation of stellar and brown dwarf companions. The results presented here include eight new companion discoveries, four of …
Inspection And Characterization Of Exoplanet Using The Chara Array, Ellyn K. Baines
Inspection And Characterization Of Exoplanet Using The Chara Array, Ellyn K. Baines
Physics and Astronomy Dissertations
Until the last decade or so, our entire knowledge of planets around Sun-like stars consisted of those in our own Solar System. This is no longer the case. Over 200 planets have been discovered through radial velocity surveys and photometric studies, both of which depend on observing the planet's effects on its host star. Much of our knowledge of the planets orbiting these stars is uncertain, based on assumptions about the stars' masses and the planets' orbital inclinations. This dissertation is comprised of two main sections. The first involves measuring the angular diameters for a sample of exoplanet host stars …