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Events for January 1, 2023 - March 30, 2023

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January 2023

Thu Jan 19

Colloquium – David Schlegel’s “The Dark Energy Spectroscopic Survey (DESI) and Beyond”

12:45 PM - Dept. of Astronomy

The Dark Energy Spectroscopic Survey (DESI) and Beyond Abstract: The Dark Energy Spectroscopic Instrument (DESI) is mapping the sky with a 5000-fiber robotic focal plane and 10 optical spectrographs. I will describe the challenges in construction, installation, commissioning, operations, and data reduction. The 13 million galaxies mapped in the first year already promises to improve our understanding of cosmic expansion and dark energy. David Schlegel, Lawrence Berkeley National Laboratory Thursday, January 19, 2023 @ 12:45 PM – 1:45 PM EST…

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Thu Jan 26

Colloquium – Azadeh Moradinezhad Dizgah’s “Cosmology and astrophysics with intensity mapping beyond 21cm: forecast and modelling”

12:45 PM - Zoom

"Cosmology and astrophysics with intensity mapping beyond 21cm: forecast and modelling" Abstract: Line intensity mapping (LIM) is emerging as a powerful technique to map the cosmic large-scale structure. Measurement of spatial fluctuations in the intensity of spectral lines together with their observed frequency provide a spectroscopic three-dimensional map of the structure over a wide range of scales and redshifts. Considering several emission lines (including rotational lines of carbon monoxide, fine structure line of ionized carbon, and oxygen lines), in the…

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February 2023

Thu Feb 02

Colloquium – Laura Kreidberg’s “Planets are Places: Exoplanet Atmosphere Characterisation in the JWST Era”

12:45 PM - Dept. of Astronomy

"Planets are Places: Exoplanet Atmosphere Characterisation in the JWST Era" Abstract: The past 25 years have revealed a diversity of exoplanets far beyond what was imagined from the limited sample in the Solar System. With new and upcoming observing facilities and a rapidly growing number of nearby planets, we are beginning to bring this diversity into focus, with detailed follow-up characterization of the planets’ atmospheres. In this talk, I will focus on two key questions in exoplanet atmosphere studies: (1)…

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Thu Feb 09

Colloquium – Amy Miller ‘s “Hierarchical Star Formation in the Large Magellanic Cloud”

12:45 PM - Dept. of Astronomy

"Hierarchical Star Formation in the Large Magellanic Cloud" Abstract: The VISTA Magellanic Clouds Survey (VMC) is a near-infrared survey of the Magellanic system. The VMC data has been exploited to detect and study statistically correlated young groups of stars --- also known as "young stellar structures" --- in the Large and Small Magellanic Clouds (LMC and SMC). We showcase the ~2500 recently detected young stellar structures in the LMC and their similarity to the fractal interstellar medium. Our results indicate…

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Thu Feb 16

Colloquium – Leandro Beraldo e Silva’s “Co-formation of the Milky Way’s Thin and Thick Discs”

12:45 PM - Dept. of Astronomy

"Co-formation of the Milky Way's Thin and Thick Discs" Abstract: Thin disc stars are younger than thick disc stars on average, and some models predict the thin disc to start forming only after the thick disc has formed, around 10 Gyr ago. According to these sequential scenarios, no significant old thin disc population should exist. In this talk, I will show recent observational evidence for the presence of an old thin disc in the MW. I will discuss how the…

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Thu Feb 23

Colloquium – Aleks Diamond-Stanic’s “Powerful Galactic Winds and the Gas around Galaxies”

12:45 PM - Dept. of Astronomy

Powerful Galactic Winds and the Gas around Galaxies Abstract: Our understanding of galaxy evolution centers around questions of how gas gets into galaxies, how it participates in star formation and black hole growth, and how it is returned to its galactic surroundings via feedback. I will present observational results for a sample of compact starburst galaxies that are driving fast outflows (at z>0.4) and for a sample of local galaxies with spatially extended outflows identified in spatially resolved spectroscopy (at…

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March 2023

Thu Mar 02

Colloquium – Shreyas Vissapragada

12:45 PM - Dept. of Astronomy

Shreyas Vissapragada, Harvard CfA Thursday, March 2, 2023 @ 12:45 PM – 1:45 PM EST 217 Bryant Space Science Center

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Thu Mar 09

Colloquium – Ji Wang’s “A Collage of Exoplanets on the Mass-Period Diagram”

12:45 PM - Dept. of Astronomy

"A Collage of Exoplanets on the Mass-Period Diagram" Abstract: I will talk about different populations of exoplanets and their interconnection. Specifically, I will present chemical composition measurements for hot Jupiters and directly-imaged young jovian planets, in an attempt to answer questions such as how stellar chemical composition controls the planet formation; how the difference of planetary and stellar chemical abundance reveals the history of orbital migration. In addition, I will highlight the recent progress in comparative planetology by contrasting (1)…

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Thu Mar 23

Colloquium – Britt Lundgren

12:45 PM - Dept. of Astronomy

Britt Lundgren, UNC Asheville Thursday, March 23, 2023 @ 12:45 PM – 1:45 PM EST 217 Bryant Space Science Center

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Thu Mar 30

Colloquium – Steven Villanueva

12:45 PM - Dept. of Astronomy

Steven Villanueva, NASA Goddard Space Flight Center Thursday, March 30, 2023 @ 12:45 PM – 1:45 PM EST 217 Bryant Space Science Center

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