The Galactic Archaeology group
14 Dec. 2012 - Registrations are open for the 2013 edition of the course
on Abundance Analysis of Cool Stars
1-3 Oct. 2012 - the 2nd
CO5BOLD workshop, organized by our group, takes place at
1 Aug. 2012 - Sonia Duffau, previously postdoc at ARI, starts
working with us today. Sonia is an expert in RR Lyr variable stars, and
will mostly focus on collaborating to the group activity within the Gaia
15 May 2012 - Anders Thygesen joined our group as PhD student
under the supervision of L. Sbordone and N. Christlieb. He will be
measuring Mg isotopic ratios in globular cluster and field stars as a
probe of the effects of AGB chemical enrichment.
For olds (=old news), check out our news archive.
The schedule and paper list for this semester Journal Club is here
ProjectsThe Galactic Archaeology Group at Landessternwarte Heidelberg is concerned with the search for the most metal-poor and hence oldest stars of the Galaxy, and the determination of their chemical abundance patterns.
These stars are important tools for studying, e.g., the formation and chemical evolution of the Galaxy, the properties (e.g., mass, rotation) of the first generation of massive stars which exploded as type II supernovae and nucleosynthesis processes that occurred in them. For a recent review of the field see Beers & Christlieb (2005, ARA&A 43, 531)
We are involved in the following survey projects:
- The Hamburg/ESO objective-prism survey (HES) The search for metal-poor stars in the HES is lead by Norbert Christlieb. The current record holders for the most heavy-element deficient stars known, HE 1327-2326 and HE 0107-5240 were both found in the HES. This project is now reaching completion.
- A new spectroscopic wide-angle survey for metal-poor stars in the northern hemisphere using the Chinese 4m LAMOST survey telescope. P.I.'s are Gang Zhao and Norbert Christlieb.
- A photometric survey for metal-poor stars in the southern hemisphere based on the data to be collected with the SkyMapper telescope. This effort is lead by Stefan Keller.
Members of the group
PublicationsPlease see ADS.
Suggestions for Diploma theses
- Selection of candidates for metal-poor outer halo stars in the HES, using kinematic information. The thesis work might include own follow-up observations in Chile or Australia.
- Homogeneous analysis of about 10,000 follow-up spectra of candidate metal-poor stars from the HES. The thesis work might include own follow-up observations in Chile or Australia.
- Development of automated spectral classification of medium-resolution LAMOST spectra.
- Development of methods for stellar parameter determination based on LAMOST spectra and SDSS photometry.
- Development of automated abundance analysis methods to be applied to SDSS spectra.