Department Events


Composition and distribution of clouds in hot Jupiters atmospheres

Wed, Sep 9, 2015 at 3:00 pm

131A Campbell Hall

Vivien Parmentier (UCSC)

Over a large range of equilibrium temperatures clouds seem to dominate the transmission spectrum of hot Jupiters atmospheres but no trend allowing the classification of these objects have yet emerged. Recently observations of the light reflected by these planets provided insight on the cloud distribution on the dayside of these planets : for a handful of planets clouds seem more …

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Atmospheres of Extrasolar Planets in the Super-Earth Era

Thu, Sep 3, 2015 at 4:00 pm

2 LeConte Hall

Heather Knutson (Caltech)

Ongoing surveys of nearby stars have revealed an amazing diversity of planetary systems, many of which have characteristics that differ substantially from those of the solar system planets. Perhaps one of the biggest surprises to come out of these surveys was the discovery that "super-Earths" (planets between 1-10 times the mass of the Earth) are one of the most common types of …

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Department Lunch Talk 9-3

Thu, Sep 3, 2015

131A Campbell Hall

James Graham (UCB)
Carl Heiles (UCB)
Heather Knutson (Caltech)

James Graham, UCB - "Recent Results from The Gemini Planet Imager" Carl Heiles, UCB - Can we see coronal mass ejections on stars other than the Sun?? Heather Knutson, CalTech [colloq. spkr.] - "Spitzer Observations of the Massive, Eccentric Transiting Planet HAT-P-2b”

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Friends of Hot Jupiters: Exploring the Dynamical Evolution of Planetary Systems

Wed, Sep 2, 2015 at 3:00 pm

131 Campbell Hall

Heather Knutson (Caltech)

Since the discovery of the first extrasolar planet around a sun-like star nearly two decades ago, exoplanets have revolutionized our understanding of planet formation and migration. Although it was suspected at the time that the giant planets in our own solar system might have undergone some orbital evolution, the discovery of a class of short-period gas giant planets known as …

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Unveiling the Link Between Supermassive Black Holes and Galaxies

Tue, Sep 1, 2015 at 1:00 pm

131A Campbell Hall

Ai-Lei Sun (Princeton)

Feedback from Active galactic nuclei (AGN) has been proposed as an important quenching mechanism to suppress star formation in massive galaxies. We investigate the most direct form of AGN feedback - galactic outflows, in the most luminous AGN in the nearby universe. Using ALMA and Magellan observations to target molecular and ionized outflows, we find that luminous AGN can impact the dynamics …

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Fast and Furious: Young Supernovae and Their Progenitors

Mon, Aug 31, 2015 at 12:00 pm

131 Campbell Hall

Yi Cao (Caltech)

Observations of supernovae within a few days of explosion provide unique constraints to the nature of their progenitors. Since 2013, as a part of my thesis, I used the intermediate Palomar Transient Factory (iPTF) to systematically study extraordinarily young supernovae. I will first provide an overview of iPTF survey design, summarize the fast turnaround …

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