The atmospheric parameters and spectral interpolator for the MILES stars

By P. Prugniel, I. Vauglin, M. Koleva. 2011

154 citations recorded by the source corpus.

Context. Empirical libraries of stellar spectra are used to classify stars and synthetize stellar populations. MILES is a medium spectralresolution library in the optical domain covering a wide range of temperatures, surface gravities and metallicities. Aims. We redetermine the atmospheric parameters of these stars in order to improve the homogeneity and accuracy. We build an interpolating function that returns a spectrum as a function of the three atmospheric parameters, and finally we characterize the precision of the wavelength calibration and stability of the spectral resolution. Methods. We used the ULySS program with the ELODIE library as a reference and compared the results with those in the literature. Results. We obtain precisions of 60 K, 0.13, and 0.05 dex, respectively, for Teff ,l ogg ,a nd [Fe/H] for the FGK stars. For the M stars, the mean errors are 38 K, 0.26, and 0.12 dex and 3.5%, 0.17, and 0.13 dex for the OBA. We construct an interpolator that we test against the MILES stars themselves. We test it also by measuring the atmospheric parameters of the CFLIB stars with MILES as reference and find it to be more reliable than the ELODIE interpolator for the evolved hot stars, like those of the blue horizontal branch in particular.

Subfields: Astronomy and Astrophysics, Instrumentation, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/0b70b86482d3355123a7d5b6fc9da1d694a37be0

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. C. Soubiran
2. P. Prugniel
3. Yue Wu
4. F. Th'evenin
5. A. Luo
6. Paulina Jofré
7. U. Heiter
8. A. Korn

In Instrumentation

1. C. Soubiran
2. P. Prugniel
3. Yue Wu
4. A. Luo
5. Paulina Jofré
6. U. Heiter
7. A. Korn
8. F. Th'evenin

Citations in the corpus

• SPECTROSCOPIC ORBITS FOR 15 LATE-TYPE STARS (2016, methodology): “Atmospheric parameters determined by Prugniel et al. (2011) indicate a similar classification.”
• Fundamental Parameters of 87 Stars from the Navy Precision Optical Interferometer (2017, unknown): “…spectral type; (5) Le Borgne et al. (2003), (6) Houdashelt et al. (2000), (7) Katz et al. (2011), (8) Valdes et al. (2004), (9) Soubiran et al. (2016), (10)Milone et al. (2011), (11) Prugniel et al. (2011), (12) Bordé et al. (2002), (13) Hekker & Meléndez (2007), and (14) Hohle et al. (2010).”
• Automatic determination of stellar atmospheric parameters and construction of stellar spectral templates of the Guoshoujing Telescope (LAMOST) (2011, methodology): “…e.g., the TGM case, T, G and M respectively represent the effective temperature, the surface gravity and the metallicity (Wu et al. 2011a; Prugniel et al. 2011a; Koleva et al. 2009a), and (ii) the star formation and metal enrichment history of galaxies, e.g., SSP (simple stellar…”
• Gaia FGK benchmark stars: Effective temperatures and surface gravities (2015, methodology): “The atmospheric parameters for most of the 985 stars in the MILES library were determined by Prugniel et al. (2011) using an automatic routine.”