SHAO Astrophysics Colloquia　　 

No colloquia this week.　　 

Galaxy seminar　　 

Title:  "CALIFA Survey: A panoramic (3D) view of galaxies"　　 

Speaker:  Ruben Garcia-Benito (Instituto de Astrofísica de Andalucía, Granada, Spain)　　 

Time: Monday,3:00pm, July 6th　　 

Location: Room 1714　　 

Abstract: In this talk I will introduce the CALIFA survey, an IFU project of the Centro Astronomico Hispano-Aleman at the Calar Alto observatory, describing its main characteristics and current status. I will give an overview of some of the main science results, paying particular attention to the stellar population analysis.　　 

Group meetings and additional talks　　 

Galaxies Group Journal Club　　 

Location: 1617; Contact: Zhi Li <lizh@shao.ac.cn>　　 

http://hubble.shao.ac.cn/~lizy/galaxies/Home.html　　 

Title: RINGS AND RADIAL WAVES IN THE DISK OF THE MILKY WAY　　 

Speaker: Zhao-Yu Li　　 

Time: Friday, 11:45 AM, July 10th　　 

Abstract: In this talk I will mainly review the recent work by Xu et al. (2015). They found an oscillating asymmetry in the Galactic plane using SDSS data. This asymmetry oscillates from more stars in the north at distances of about 2 kpc from the Sun to more stars in the south at 4-6 kpc from the Sun to more stars in the north at distances of 8-10 kpc from the Sun. They also saw evidence of more stars in the south at distances of 12-16 kpc from the Sun. Possible mechanisms for this phenomenon are also discussed