VizieR Online Data Catalog: Dynamically tagged groups of metal-poor stars. I. (Shank+, 2022)

The best and brightest metal-poor stars (B&B survey; Schlaufman & Casey 2014, J/ApJ/797/13) forms the basis for the compilation of our data set.

A comprehensive explanation of the construction of the spectroscopic sample, along with details of the medium-resolution spectroscopic observations, are discussed in both Placco+ (2019, J/ApJ/870/122) and Limberg+ (2021, J/ApJ/907/10). The spectra of the target stars were taken with either the Gemini-North/South (GMOS-N/S) 8.1m telescope (2263 targets; primarily during bad-weather time), the ESO New Technology (NTT) 3.58m telescope (256 targets), the Southern Astrophysical Research (SOAR) 4.1m telescope (167 targets), or the Kitt Peak National Observatory (KPNO) Mayall 4m telescope (73 targets), over the course of a 7yr campaign from 2014 to 2020, resulting in observations for a total of 2760 bright, metal-poor stellar candidates. The typical wavelength range that these spectra cover is 3200<~λ(Å)<~5800 for GMOS-N/S targets, 3300<~λ(Å)<~5100 for NTT targets, 3600<~λ(Å)<~6200 for SOAR targets, and 3600<~λ(Å)<~6300 for KPNO targets. The effective resolving power achieved is R~2000 for GMOS-N/S spectra, R~1200 for NTT spectra, R~1500 for SOAR spectra, and R~1800 for KPNO spectra.

The reduced spectra were then used to determine the stellar atmospheric parameters and elemental abundances for the stars using the non-SEGUE Stellar Parameter Pipeline (n-SSPP; Beers+ 2014, J/ApJ/794/58 and 2017, J/ApJ/835/81).

See Section 2.

(7 data files).