SHAO Astrophysics Colloquia

Title: Comparing radiative transfer models and observations of astrophysical dust

Speaker: Peter Scicluna, (ASIAA)

Time: 3 PM, Dec. 08 (Thursday)

Location: Lecture Hall, 3rd floor

Abstract: Modern astronomy often relies upon models to interpret observations. In particular, because optical-depth effects play a major role in the propagation of light, radiative transfer modelling is crucial. I will briefly review methods of radiative transfer, along with their strengths, weaknesses, and example applications, before discussing a selection of recent and future work on systems with complex geometries in greater detail. In particular, I will explore the influence of clumpiness on observations of extinction and emission in dusty circum- and interstellar media.

 Galaxy Seminar

Location: 1714

Contact: Jian Fu, Fangting Yuan, Chunyan Jiang, Zhaoyu Li, Ting Xiao

Time: 10:30，Dec.07( Wednesday)

Title: Measuring the Hubble Constant, SMBH mass and beyond with H2O megamaser disks

Speaker: 高峰

Group meetings

Black hole Accretion and High-energy Astrophysics /Black Hole Feedback and Cosmic Ray Astrophysics Seminar

Location：1608

Time：14:00-16:00, Dec.07( Wednesday)

Speaker: Feng Yuan

Title: Simulating galaxy formation with black hole driven thermal and kinetic feedback

http://adsabs.harvard.edu/abs/2016arXiv160703486W

Fuguo Xie:

Title: The small observed scale of AGN-driven outflows, and inside-out disc quenching

http://adsabs.harvard.edu/abs/2016MNRAS.462.4055Z

Galactic Dynamics Group Journal Club

Location：1608

Time：9:30-11:00，Dec. 08 (Thursday)

Speaker: Yingying Zhou

Title: Kinematics in the Galactic Bulge with APOGEE: II. High-Order Kinematical Moments and Comparison to Extragalactic Bar Diagnostics

Abstract:

From the LOSVD map of APOGEE, they find that the models do not reproduce the observed LOSVD skewness patterns and find evidence in the MW of the skewness-velocity correlation that is used as a diagnostic of extragalactic bar/bulges. This correlation appears in metal-rich stars only, providing further evidence for different evolutionary histories of chemically differentiated populations. They connect these skewness measurements to previous work on high-velocity "peaks" in the inner Galaxy, confirming the presence of that phenomenon, and they quantify the cylindrical rotation of the inner Galaxy, finding that the latitude-independent rotation vanishes outside of l ~ 7 deg.