A grid of Synthetic Spectra for Hot DA White Dwarfs and Its Application in Stellar Population Synthesis
arXiv:1707.04299 · doi:10.3847/1538-4365/aa7681
Abstract
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 <= log(g) <= 9.5. The stellar models are built for pure hydrogen and the spectra cover a wavelength range from 900 A to 2.5 microns. 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.
arXiv commentto be published in The Astrophysical Journal Supplement Series
References in corpus (19)
- Stellar population synthesis at the resolution of 2003
- Starburst99: Synthesis Models for Galaxies with Active Star Formation
- The Photometric Performance and Calibration of the HST Advanced Camera For Surveys
- A large stellar evolution database for population synthesis studies. II. Stellar models and isochrones for an alpha-enhanced metal distribution
- An Improved Spectroscopic Analysis of DA White Dwarfs from the Sloan Digital Sky Survey Data Release 4
- Spectroscopic Analysis of DA White Dwarfs: Stark Broadening of Hydrogen Lines Including Non-Ideal Effects
- Evolutionary stellar population synthesis with MILES - II. Scaled-solar and α-enhanced models
- A Spectroscopic Survey & Analysis of Bright, Hydrogen-Rich White Dwarfs
- Evolutionary Stellar Population Synthesis at High Spectral Resolution: Optical Wavelengths
- Super and massive AGB stars - IV. Final fates - Initial to final mass relation
- New white dwarf stars in the Sloan Digital Sky Survey Data Release 10
- A new library of theoretical stellar spectra with scaled-solar and alpha-enhanced mixtures
- Spectral models for solar-scaled and alpha-enhanced stellar populations
- High-resolution UVES/VLT spectra of white dwarfs observed for the ESO SN Ia Progenitor Survey. III. DA white dwarfs
- A large stellar evolution database for population synthesis studies: VI. White dwarf cooling sequences
- The Ratio of Helium- to Hydrogen-Atmosphere White Dwarfs: Direct Evidence for Convective Mixing
- Evidence for an external origin of heavy elements in hot DA white dwarfs
- Calibration of the Mixing-Length Theory for Convective White Dwarf Envelopes
- The stellar metallicity distribution of the Milky Way from the BATC survey
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