Efficiency and success rates of the Pristine survey from spectroscopic follow-up

Bibcode
2018IAUS..334...51Y
DOI
10.1017/S1743921317008560
Youakim, Kris; Starkenburg, Else; Aguado, D.; Martin, Nicolas; Pristine Collaboration
Referencia bibliográfica

Rediscovering our Galaxy, Proceedings of the International Astronomical Union, IAU Symposium, Volume 334, pp. 51-54

Fecha de publicación:
8
2018
Número de autores
5
Número de autores del IAC
1
Número de citas
0
Número de citas referidas
0
Descripción
The Pristine survey uses narrow-band photometry on the region of the Ca II H & K absorption lines to find extremely metal-poor stars. With a spectroscopic follow-up sample of 205 stars in the magnitude range 14 < V < 18, we compute the success rates for finding extremely metal-poor stars and modify the selection criteria used to select stars for follow-up. This reduces the sample to 149 stars, and from these we report success rates of 22% for recovering stars with [Fe/H] < -3.0 and 70% for [Fe/H] < -2.5. When compared to previous works that search for extremely metal-poor stars, the success rates of Pristineshow an improvement in efficiency by a factor of ~4 - 5.
Tipo
Sin árbitro

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