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<< Week of October 08 >>

Monday, October 5, 2015

The Zen of Galaxies

Seminar: TAC Seminars | October 5 | 12 p.m. | 131A Campbell Hall

John Forbes, UCSC

Department of Astronomy

Over the past decade a quiet revolution has taken place in our picture of galaxy evolution. Rather than evolving through violent mergers, galaxies live quiet lives on narrow scaling relations. This is explained elegantly by the so-called "equilibrium model" of galaxy formation. I will present a simple extension to this model that can explain the finite scatter observed in galaxy scaling relations...   More >

Tuesday, October 6, 2015

Testing Gravity using Galaxy Redshift Surveys and CMB

Seminar: Cosmology Seminars | October 6 | 1 p.m. | 131A Campbell Hall

Shadab Alam, CMU

Department of Astronomy

The Redshift Space Distortions (RSD) in galaxy redshift surveys can probe the local dynamics at a given epoch of galaxy. I will discuss how redshift can help us learn the local dynamics and hence measure the nature of gravity at the epoch of the galaxy. I will show results from our recent analysis of SDSS-III high redshift sample (CMASS). I will then talk about combining similar RSD measurements...   More >

Wednesday, October 7, 2015

CIPS Seminar

Seminar: CIPS Seminars | October 7 | 3 p.m. | 131A Campbell Hall

Gérard Massacrier, CRAL, Lyon; Shuai Zhang, UC Berkeley

Department of Astronomy

Gérard Massacrier (CRAL, Lyon, France) - "Chemically peculiar stars and radiative forces"

This talk will give an overview of the modeling of chemically peculiar stars, which exhibit in their atmospheres anomalous elemental abundances. The natural explanation is through the action of radiative forces. The chemical species are accelerated in different proportions according to their capability to...   More >

The Development of Observational and Predictive Astronomy during the Neo-Babylonian Period

Lecture | October 7 | 5-6 p.m. | 254 Barrows Hall

John Steele, Professor, Brown University

Near Eastern Studies

Babylonian astronomy activity during the first millennium BC included astronomical observation, the prediction of future astronomical events using cycles, the development of mathematical astronomy, and the use of astronomical data in various kinds of astrology. Most of our preserved astronomical texts date from the Achaemenid and Seleucid periods and attest to an already fully developed practice....   More >

Thursday, October 8, 2015

Department Lunch

Presentation: Lunch Talks | October 8 | 12:30 p.m. | 131A Campbell Hall

Andrew Simieon (UC Berkeley) - “An Update on the Search for Life Beyond the Earth”; David Jones (JHU) - "Cosmology with over 1,000 Photometrically Confirmed Type Ia Supernovae from Pan-STARRS"; Jean Brodie (UCSC, colloq. speaker) - “Ultra compact dwarfs: "smoking guns" of galaxy halo assembly”

Department of Astronomy

The Department Lunch Talk series is a weekly event that features three 20 minute talks presented mainly by local scientists of any level to present their work to a broad spectrum of the department and usually includes one short talk by the astronomy colloquium speaker of the day. Subjects can include personal scientific research, reporting on other work appearing in journals, education and public...   More >

Globular Clusters, Halo Stars and Galaxy Assembly

Colloquium: Astronomy Colloquia | October 8 | 4 p.m. | 1 LeConte Hall

Jean Brodie, UC Santa Cruz

Department of Astronomy

A variety of evidence suggests that metal rich globular clusters (GCs) trace the build-up of galaxy bulges, while metal poor GCs trace the build up of their halos. Wide field observations of galaxies are critically important for testing the currently favored two-phase paradigm for galaxy formation, because many signatures of galaxy assembly processes are only revealed at large radius. Indeed more...   More >