RGB stars in Sagittarius streams (Monaco+, 2007)

Details RGB stars in Sagittarius streams (Monaco+, 2007) RGB stars in Sagittarius streams (Monaco+, 2007)

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ycat..34640201m&link_type=abstract

VizieR On-line Data Catalog: J/A+A/464/201. Originally published in: 2007A&A...464..201M

Computer Science

Galaxies: Nearby, Stars: Giant, Radial Velocities, Abundances

Scientific paper

Spectra were secured using different high resolution facilities: UVES@VLT, HARPS@3.6m, and SARG@TNG. Radial velocities are obtained through cross correlation with a template spectra. Concerning chemical analysis, for the various elements, selected line equivalent widths were measured and abundances computed using the WIDTH code and ATLAS model atmospheres. A total of 13 stars were observed between August 30, 2004, and January 24, 2005, using the SARG spectrograph mounted on the Telescopio Nazionale Galileo (TNG) telescope at La Palma.
We present iron (Fe) and alpha-element (Mg, Ca) abundances for 12 red giant branch stars belonging to the Sagittarius dwarf spheroidal galaxy tidal streams.
Spectra were obtained with the SARG spectrograph mounted at the Telescopio Nazionale Galileo (La Palma, Spain).
We used the 1.6" slit, which provides a resolution of R=29000. For each star we report the equivalent widths (EWs) measured for a selected sample of Fe, Mg, and Ca lines along with the abundances derived for each line from the measured EWs and the adopted atomic parameters.
(2 data files).

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