Three Puzzles in Star and Planet Formation
September 28, 2017
Phillips Auditorium
Kaitlin Kratter
Univ. of Arizona
Host:
Alyssa Goodman
Abstract:
In the past 5 years, new observational facilities have provided remarkable data sets against which we can evaluate theories of star formation and planet formation. I will describe three different theoretical investigations motivated or corroborated by new observations. In each case, important open questions remain. First I will discuss the formation of close binaries through a variety of channels. I will illustrate how ALMA and careful statistical studies have begun to validate a long-held theoretical picture. Next, I will discuss the surprising high resolution ALMA images of protoplanetary disk asymmetries. I will show how careful numerical models can validate (or not) the interpretation of these images as evidence for the Rossby Wave Instability. Finally, I will discuss the dynamics of the Pluto-Charon circumbinary satellite system. The New Horizons space mission not only provides new insights into the formation of these bodies, but also provides a record of the Kuiper Belt and thus planet formation in the outer solar system.
Видео Three Puzzles in Star and Planet Formation канала CfA Colloquium
Phillips Auditorium
Kaitlin Kratter
Univ. of Arizona
Host:
Alyssa Goodman
Abstract:
In the past 5 years, new observational facilities have provided remarkable data sets against which we can evaluate theories of star formation and planet formation. I will describe three different theoretical investigations motivated or corroborated by new observations. In each case, important open questions remain. First I will discuss the formation of close binaries through a variety of channels. I will illustrate how ALMA and careful statistical studies have begun to validate a long-held theoretical picture. Next, I will discuss the surprising high resolution ALMA images of protoplanetary disk asymmetries. I will show how careful numerical models can validate (or not) the interpretation of these images as evidence for the Rossby Wave Instability. Finally, I will discuss the dynamics of the Pluto-Charon circumbinary satellite system. The New Horizons space mission not only provides new insights into the formation of these bodies, but also provides a record of the Kuiper Belt and thus planet formation in the outer solar system.
Видео Three Puzzles in Star and Planet Formation канала CfA Colloquium
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