TY - JOUR
T1 - A Grid of Synthetic Spectra for Hot da White Dwarfs and Its Application in Stellar Population Synthesis
AU - Levenhagen, Ronaldo S.
AU - Diaz, Marcos P.
AU - Coelho, Paula R.T.
AU - Hubeny, Ivan
N1 - Publisher Copyright:
© 2017. The American Astronomical Society. All rights reserved.
PY - 2017/7
Y1 - 2017/7
N2 - In this work we present a grid of LTE and non-LTE synthetic spectra of hot DA white dwarfs (WDs). In addition to its usefulness for the determination of fundamental stellar parameters of isolated WDs and in binaries, this grid will be of interest for the construction of theoretical libraries for stellar studies from integrated light. The spectral grid covers both a wide temperature and gravity range, with 17,000 K ≤T eff ≤100,000 K and 7.0 ≤ ≤9.5. The stellar models are built for pure hydrogen and the spectra cover a wavelength range from 900 Å to 2.5 μm. Additionally, we derive synthetic HST/ACS, HST/WFC3, Bessel UBVRI, and SDSS magnitudes. The grid was also used to model integrated spectral energy distributions of simple stellar populations and our modeling suggests that DAs might be detectable in ultraviolet bands for populations older than ∼8 Gyr.
AB - In this work we present a grid of LTE and non-LTE synthetic spectra of hot DA white dwarfs (WDs). In addition to its usefulness for the determination of fundamental stellar parameters of isolated WDs and in binaries, this grid will be of interest for the construction of theoretical libraries for stellar studies from integrated light. The spectral grid covers both a wide temperature and gravity range, with 17,000 K ≤T eff ≤100,000 K and 7.0 ≤ ≤9.5. The stellar models are built for pure hydrogen and the spectra cover a wavelength range from 900 Å to 2.5 μm. Additionally, we derive synthetic HST/ACS, HST/WFC3, Bessel UBVRI, and SDSS magnitudes. The grid was also used to model integrated spectral energy distributions of simple stellar populations and our modeling suggests that DAs might be detectable in ultraviolet bands for populations older than ∼8 Gyr.
KW - globular clusters: general
KW - line: profiles
KW - stars: atmospheres
KW - stars: fundamental parameters
KW - techniques: spectroscopic
KW - white dwarfs
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U2 - 10.3847/1538-4365/aa7681
DO - 10.3847/1538-4365/aa7681
M3 - Article
AN - SCOPUS:85025447752
VL - 231
JO - Astrophysical Journal, Supplement Series
JF - Astrophysical Journal, Supplement Series
SN - 0067-0049
IS - 1
M1 - 1
ER -