Items filtered by date: January 2018

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Items filtered by date: January 2018

THCA year-end meeting and AMD Award for graduate students

Monday 22nd of January, 2018, THCA held the 2017 year-end meeting. Graduate students and faculty members at THCA were invited to attend this yearly event. The meeting started at 9:00am with a two-hour session for graduate students to give oral presentations, summarizing their scientific research in 2017. As a result of this session, eight of the graduate students received the AMD Award for their significant progress made over the past year, as selected by a committee formed by six professors from THCA. A ceremony was then held for the awardees after a short Pizza party. Ms. Ping Le, Director of University Relations Division of the Advanced Micro Devices (China) Co., Ltd., donor of the Award, was invited to THCA for both the Pizza party and the award ceremony.

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MaNGA reveals how galaxies stop forming stars

Our understanding of the galaxy populations at both low-z and high-z has advanced dramatically, thanks to the large photometric/spectroscopic surveys of galaxies accomplished in the past one and a half decades. It's well established that the galaxies can be divided into two major populations in the space of stellar mass (or luminosity) and color. In addition, the fraction of the red population has steadily increased by a factor of two since redshift of unity, indicating that the star formation cessation in galaxies has been an important process driving the galaxy evolution in the past ~80 Gyr. However, how the star formation gets shutdown and what processes drive the star formation cessation are not fully understood. Processes internal to individual galaxies (e.g. secular evolution driven by bars or minor mergers, AGN feedback, etc.) and external environmental effects (e.g. tidal stripping and ram-pressure stripping) are both believed to play important roles. Therefore, in order to have a complete picture of the star formation cessation, one would need to have deep imaging and spatially resolved spectroscopy for a large sample of galaxies covering wide ranges of galaxy properties and environment. Such samples have become available only recently from the integral field spectroscopy (IFS) surveys.


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