Found 49 talks archived in The Galaxy

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Thursday February 6, 2014
Dr. Elena Pancino
INAF - Osservatorio Astronomico di Bologna

Abstract

Gaia - the ESA cornerstone astrometric mission - was launched in December 2013, with the goal of censing the Milky Way population in a 6D space (positions and velocity) of 10^9 point-like obects, with errors
100-1000 times smaller than Hipparcos, with three color magnitudes and spectra as well. The scientific impact of its data will be large in many fields of astrophysics, from Galactic science, to Solar system objects, to stellar astrophysics, to galaxies and Quasars; from the distance ladder revision to fundamental physics. I will describe the mission concept, the scientific goals, and the present status of the mission, with special attention to the flux calibration of Gaia data.


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Thursday January 9, 2014
Dr. Manuela Zoccali
Universidad Católica de Chile

Abstract

The structure, kinematics and stellar population of the Galactic bulge is very complex. Only three years ago the bulge was discovered to be X-shaped, a structure believed to originate from the dynamical instabilities of a disk, through the formation and posterior heating of a bar. The study of its kinematics reveals a cylindrical rotation, typical of a bar, suggesting the absence of a spheroidal component. Nevertheless, the bulge stellar population is old, has a radial metallicity gradient, and element ratio indicative of a short formation timescale. All these elements conflict with a simplistic view of the bulge as a heated bar, formed via "secular" evolution of a disk. I will review our knowledge of the bulge properties as traced by the 3D structure, kinematics, and chemical composition of its red clump stars.


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Friday September 6, 2013
Dr. Carlos Allende Prieto
Instituto de Astrofisica de Canarias, Tenerife, Spain

Abstract

3- Other spectroscopic surveys and analysis strategies

- eBOSS, BigBOSS, HETDEX, WEAVE, 4MOST

- data mashup: astrometry,  photometry and spectroscopy together

- reconstructing the Galaxy

- 'observing' galaxy simulations

- discovery and follow-up of interesting/exotic targets: HVS, UMPS, CEMPS, RCrBs...


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Friday September 6, 2013
Dr. Leo Girardi
Osservatorio Astronomico di Padova, INAF, Italy

Abstract

5- Some current problems and opportunities

- simulating kinematics

- simulating variables

- simulating non-solar scaled populations

- simulating rare and extreme populations (e.g. X-ray sources, PNe,

  hot-WDs, AGB-manque', C stars, IR-emission by mass-losing stars)

- opportunities opened by asteroseismology


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Friday September 6, 2013
Dr. Ortwin Gerhard
Max-Planck-Institut fuer extraterrestrische Physik, Germany

Abstract

5-   The Galactic halo

- mass, extent, shape

- substructure, inner/outer halo


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Friday September 6, 2013
Dr. Ken Freeman
Australian National University, Australia

Abstract

5- The Galactic bulge

- observational status on bulge kinematics and chemical properties in the context of other bulges

- ideas about the formation of the bulge


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Friday September 6, 2013
Dr. Jerry Sellwood
Rutgers University, USA

Abstract

5- SPH basics

- numerical viscosity

- Kelvin-Helmholtz instabilities

- other problems and their amelioration


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Thursday September 5, 2013
Dr. Carlos Allende Prieto
Instituto de Astrofisica de Canarias, Tenerife, Spain

Abstract

2- Spectra

- APOGEE, RAVE, SDSS/SEGUE/BOSS, Gaia-ESO

- Spectral classification

- radial velocities

- automated data analysis


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Thursday September 5, 2013
Dr. Leo Girardi
Osservatorio Astronomico di Padova, INAF, Italy

Abstract

4- From external galaxies to the Milky Way

- basic equation of stellar statistics, computational methods

- overview of available MW codes

- expected populations X photometric depth and galactic coordinates


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Thursday September 5, 2013
Dr. Ortwin Gerhard
Max-Planck-Institut fuer extraterrestrische Physik, Germany

Abstract

4-  The Galactic bulge

- structure

- dynamics

- origin