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.
Referencia bibliográfica

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

Fecha de publicación:
3
2010
Número de autores
6
Número de autores del IAC
1
Número de citas
0
Número de citas referidas
0
Descripción
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.
Tipo
Sin árbitro
Galaxias

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