Chemical Fingerprinting and Chemical Analysis of Galactic Halo Substructure

Bibcode
2010IAUS..265..364M
DOI
10.1017/S1743921310000943
Majewski, Steven R.; Chou, Mei-Yin; Cunha, Katia; Smith, Verne V.; Patterson, Richard J.; Martínez-Delgado, D.
Bibliographical reference

Chemical Abundances in the Universe: Connecting First Stars to Planets, Proceedings of the International Astronomical Union, IAU Symposium, Volume 265, p. 364-365

Advertised on:
3
2010
Number of authors
6
IAC number of authors
1
Citations
0
Refereed citations
0
Description
We present high-resolution spectroscopic measurements of the abundances of the α-like element titanium (Ti) and s-process elements yttrium (Y) and lanthanum (La) for M giant candidates of (a) the Sagittarius (Sgr) dwarf spheroidal + tidal tail system, (b) the Triangulum-Andromeda (TriAnd) Star Cloud, and (c) the Galactic Anticenter Stellar Structure (GASS, or Monoceros Stream). All three systems show abundance patterns unlike the Milky Way but typical of dwarf galaxies. The Sgr system abundance patterns resemble those of the Large Magellanic Cloud. GASS/Mon chemically resembles Sgr but is distinct from TriAnd, a result that does not support previous suggestions that TriAnd is a piece of the Monoceros Stream.
Type
Non-refereed
Galaxies

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