J/ApJS/231/1 Hot DA white dwarfs grid of synthetic spectra (Levenhagen+, 2017)
A Grid of Synthetic Spectra for Hot DA White Dwarfs and Its Application in
Stellar Population Synthesis.
Levenhagen R.S., Diaz M.P., Coelho P.R.T., Hubeny I.
<Astrophys. J. Suppl. Ser. 231, 1 (2017)>
=2017ApJS..231....1L 2017ApJS..231....1L (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, globular ; Line Profiles ; Stars, white dwarf ;
Models, atmosphere
Keywords: globular clusters: general - line: profiles - stars: atmospheres -
stars: fundamental parameters - techniques: spectroscopic -
white dwarfs
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
17000K≤Teff≤100000K and 7.0≤log(g)≤9.5. The stellar models are
built for pure hydrogen and the spectra cover a wavelength range from
900Å to 2.5um. 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 ∼8Gyr.
Description:
Files tTTTgGGA.dat concern non-LTE DA White Dwarf synthetic spectra.
TTT corresponds to the effective temperature, GG corresponds to log(g)
and nl (for NLTE) flag. Files bessel.dat, hstacs.dat,
hstwfc3.dat, sdss.dat are respectively synthetic magnitude tables in
the Bessel, HST/ACS, HST/WFC3 and SLOAN/SDSS systems.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
bessel.dat 64 2184 Synthetic Bessel magnitudes (update 13/04/2021)
hstacs.dat 196 2184 Synthetic HST/ACS magnitudes (update 13/04/2021)
hstwfc3.dat 702 2184 Synthetic HST/WFC3-UVIS2 magnitudes
(update 13/04/2021)
sdss.dat 64 2184 Synthetic SLOAN/SDSS magnitudes
(update 13/04/2021)
spectra.dat 26 2184 List of synthetic spectra (update 13/04/2021)
sp/* . 2184 Individual LTE/NLTE DA white dwarf
synthetic spectra (update 13/04/2021)
fits/* . 2184 Fits version of synthetic spectra
(update 13/04/2021)
legacy/* . 7 First version (03-Jul-2017)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: bessel.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 I6 K Teff Effective temperature
8- 9 I2 10[cm/s2] logg log surface gravity * 10
11- 20 F10.7 mag Umag Bessel U magnitude (Vega) (1)
22- 31 F10.7 mag Bmag Bessel B magnitude (Vega) (1)
33- 42 F10.7 mag Vmag Bessel V magnitude (Vega) (1)
44- 53 F10.7 mag Rmag Bessel R magnitude (Vega) (1)
55- 64 F10.7 mag Imag BEssel I magnitude (Vega) (1)
--------------------------------------------------------------------------------
Note (1): Bessel magnitudes are expressed in the Vega system.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: hstacs.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 I6 K Teff Effective temperature
8- 9 I2 10[cm/s2] logg log surface gravity * 10
11- 20 F10.7 mag F220W HST/ACS F220W magnitude (Vega) (1)
22- 31 F10.7 mag F250W HST/ACS F250W magnitude (Vega) (1)
33- 42 F10.7 mag F330W HST/ACS F330W magnitude (Vega) (1)
44- 53 F10.7 mag F344N HST/ACS F344N magnitude (Vega) (1)
55- 64 F10.7 mag F435W HST/ACS F435W magnitude (Vega) (1)
66- 75 F10.7 mag F475W HST/ACS F475W magnitude (Vega) (1)
77- 86 F10.7 mag F502N HST/ACS F502N magnitude (Vega) (1)
88- 97 F10.7 mag F550M HST/ACS F550M magnitude (Vega) (1)
99-108 F10.7 mag F555W HST/ACS F555W magnitude (Vega) (1)
110-119 F10.7 mag F606W HST/ACS F606W magnitude (Vega) (1)
121-130 F10.7 mag F652W HST/ACS F652W magnitude (Vega) (1)
132-141 F10.7 mag F658N HST/ACS F658N magnitude (Vega) (1)
143-152 F10.7 mag F660N HST/ACS F660N magnitude (Vega) (1)
154-163 F10.7 mag F775W HST/ACS F775W magnitude (Vega) (1)
165-174 F10.7 mag F814N HST/ACS F814N magnitude (Vega) (1)
176-185 F10.7 mag F850LP HST/ACS F850LP magnitude (Vega) (1)
187-196 F10.7 mag F892N HST/ACS F892N magnitude (Vega) (1)
--------------------------------------------------------------------------------
Note (1): HST/ACS magnitudes are expressed in the Vega system.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: hstwfc3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 I6 K Teff Effective temperature
8- 9 I2 10[cm/s2] logg log surface gravity * 10
11- 20 F10.7 mag F200LP HST/WFC3-UVIS2 F200LP magnitude (Vega) (1)
22- 31 F10.7 mag F218W HST/WFC3-UVIS2 F218W magnitude (Vega) (1)
33- 42 F10.7 mag F225W HST/WFC3-UVIS2 F225W magnitude (Vega) (1)
44- 53 F10.7 mag F275W HST/WFC3-UVIS2 F275W magnitude (Vega) (1)
55- 64 F10.7 mag F280N HST/WFC3-UVIS2 F280N magnitude (Vega) (1)
66- 75 F10.7 mag F300X HST/WFC3-UVIS2 F300X magnitude (Vega) (1)
77- 86 F10.7 mag F336W HST/WFC3-UVIS2 F336W magnitude (Vega) (1)
88- 97 F10.7 mag F343N HST/WFC3-UVIS2 F343N magnitude (Vega) (1)
99-108 F10.7 mag F350LP HST/WFC3-UVIS2 F350LP magnitude (Vega) (1)
110-119 F10.7 mag F373N HST/WFC3-UVIS2 F373N magnitude (Vega) (1)
121-130 F10.7 mag F390M HST/WFC3-UVIS2 F390M magnitude (Vega) (1)
132-141 F10.7 mag F390W HST/WFC3-UVIS2 F390W magnitude (Vega) (1)
143-152 F10.7 mag F395N HST/WFC3-UVIS2 F395N magnitude (Vega) (1)
154-163 F10.7 mag F410M HST/WFC3-UVIS2 F410M magnitude (Vega) (1)
165-174 F10.7 mag F438W HST/WFC3-UVIS2 F438W magnitude (Vega) (1)
176-185 F10.7 mag F467M HST/WFC3-UVIS2 F467M magnitude (Vega) (1)
187-196 F10.7 mag F469N HST/WFC3-UVIS2 F469N magnitude (Vega) (1)
198-207 F10.7 mag F475W HST/WFC3-UVIS2 F475W magnitude (Vega) (1)
209-218 F10.7 mag F475X HST/WFC3-UVIS2 F475X magnitude (Vega) (1)
220-229 F10.7 mag F487N HST/WFC3-UVIS2 F487N magnitude (Vega) (1)
231-240 F10.7 mag F502N HST/WFC3-UVIS2 F502N magnitude (Vega) (1)
242-251 F10.7 mag F547M HST/WFC3-UVIS2 F547M magnitude (Vega) (1)
253-262 F10.7 mag F555W HST/WFC3-UVIS2 F555W magnitude (Vega) (1)
264-273 F10.7 mag F600LP HST/WFC3-UVIS2 F600LP magnitude (Vega) (1)
275-284 F10.7 mag F606W HST/WFC3-UVIS2 F606W magnitude (Vega) (1)
286-295 F10.7 mag F621M HST/WFC3-UVIS2 F621M magnitude (Vega) (1)
297-306 F10.7 mag F625W HST/WFC3-UVIS2 F625W magnitude (Vega) (1)
308-317 F10.7 mag F631N HST/WFC3-UVIS2 F631N magnitude (Vega) (1)
319-328 F10.7 mag F645N HST/WFC3-UVIS2 F645N magnitude (Vega) (1)
330-339 F10.7 mag F656N HST/WFC3-UVIS2 F656N magnitude (Vega) (1)
341-350 F10.7 mag F657N HST/WFC3-UVIS2 F657N magnitude (Vega) (1)
352-361 F10.7 mag F658N HST/WFC3-UVIS2 F658N magnitude (Vega) (1)
363-372 F10.7 mag F665N HST/WFC3-UVIS2 F665N magnitude (Vega) (1)
374-383 F10.7 mag F673N HST/WFC3-UVIS2 F673N magnitude (Vega) (1)
385-394 F10.7 mag F680N HST/WFC3-UVIS2 F680N magnitude (Vega) (1)
396-405 F10.7 mag F689M HST/WFC3-UVIS2 F689M magnitude (Vega) (1)
407-416 F10.7 mag F763M HST/WFC3-UVIS2 F763M magnitude (Vega) (1)
418-427 F10.7 mag F775W HST/WFC3-UVIS2 F775W magnitude (Vega) (1)
429-438 F10.7 mag F814W HST/WFC3-UVIS2 F814W magnitude (Vega) (1)
440-449 F10.7 mag F845M HST/WFC3-UVIS2 F845M magnitude (Vega) (1)
451-460 F10.7 mag F850LP HST/WFC3-UVIS2 F850LP magnitude (Vega) (1)
462-471 F10.7 mag F953N HST/WFC3-UVIS2 F953N magnitude (Vega) (1)
473-482 F10.7 mag FQ232N HST/WFC3-UVIS2 FQ232N magnitude (Vega) (1)
484-493 F10.7 mag FQ243N HST/WFC3-UVIS2 FQ243N magnitude (Vega) (1)
495-504 F10.7 mag FQ378N HST/WFC3-UVIS2 FQ378N magnitude (Vega) (1)
506-515 F10.7 mag FQ387N HST/WFC3-UVIS2 FQ387N magnitude (Vega) (1)
517-526 F10.7 mag FQ422M HST/WFC3-UVIS2 FQ422M magnitude (Vega) (1)
528-537 F10.7 mag FQ436N HST/WFC3-UVIS2 FQ436N magnitude (Vega) (1)
539-548 F10.7 mag FQ437N HST/WFC3-UVIS2 FQ437N magnitude (Vega) (1)
550-559 F10.7 mag FQ492N HST/WFC3-UVIS2 FQ492N magnitude (Vega) (1)
561-570 F10.7 mag FQ508N HST/WFC3-UVIS2 FQ508N magnitude (Vega) (1)
572-581 F10.7 mag FQ575N HST/WFC3-UVIS2 FQ575N magnitude (Vega) (1)
583-592 F10.7 mag FQ619N HST/WFC3-UVIS2 FQ619N magnitude (Vega) (1)
594-603 F10.7 mag FQ634N HST/WFC3-UVIS2 FQ634N magnitude (Vega) (1)
605-614 F10.7 mag FQ672N HST/WFC3-UVIS2 FQ672N magnitude (Vega) (1)
616-625 F10.7 mag FQ674N HST/WFC3-UVIS2 FQ674N magnitude (Vega) (1)
627-636 F10.7 mag FQ727N HST/WFC3-UVIS2 FQ727N magnitude (Vega) (1)
638-647 F10.7 mag FQ750N HST/WFC3-UVIS2 FQ750N magnitude (Vega) (1)
649-658 F10.7 mag FQ889N HST/WFC3-UVIS2 FQ889N magnitude (Vega) (1)
660-669 F10.7 mag FQ906N HST/WFC3-UVIS2 FQ906N magnitude (Vega) (1)
671-680 F10.7 mag FQ924N HST/WFC3-UVIS2 FQ924N magnitude (Vega) (1)
682-691 F10.7 mag FQ937N HST/WFC3-UVIS2 FQ937N magnitude (Vega) (1)
693-702 F10.7 mag G280 HST/WFC3-UVIS2 G280 magnitude (Vega) (1)
--------------------------------------------------------------------------------
Note (1): HST/WFC3-UVIS2 magnitudes are expressed in the Vega system.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: sdss.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 I6 K Teff Effective temperature
8- 9 I2 10[cm/s2] logg log surface gravity * 10
11- 20 F10.7 mag umag SLOAN/SDSS u magnitude (AB) (1)
22- 31 F10.7 mag gmag SLOAN/SDSS g magnitude (AB) (1)
33- 42 F10.7 mag rmag SLOAN/SDSS r magnitude (AB) (1)
44- 53 F10.7 mag imag SLOAN/SDSS i magnitude (AB) (1)
55- 64 F10.7 mag zmag SLOAN/SDSS z magnitude (AB) (1)
--------------------------------------------------------------------------------
Note (1): SLOAN/SDSS magnitudes are expressed in the AB system.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: spectra.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 I6 K Teff Effective temperature
8- 9 I2 10[cm/s2] logg log surface gravity * 10
11 A1 --- LTE/NLTE [ln] l for LTE spectrum, n for NLTE spectrum
13- 26 A14 --- FileName Name of spectrum file in subdirectory sp (1)
--------------------------------------------------------------------------------
Note (1): Files named tTTTgGGA.dat, where
TTT is the effective temperature/1000 [K],
GG the log surface gravity * 10 [cm/s2], and
A (l or n), l for LTE spectrum (17000≤Teff≤34000),
n for NLTE spectrum (35000≤Teff≤100000)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: sp/*
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
3- 24 E22.18 0.1nm lambda Wavelength (Å)
28- 38 E11.6 cW/m2/nm Flux Eddington flux (erg/cm2/s/Å)
--------------------------------------------------------------------------------
Acknowledgements:
Ronaldo S. Levenhagen, ronaldo.levenhagen(at)gmail.com
History:
03-Jul-2017: on-line version
13-Apr-2021: updated version
(End) Ronaldo S. Levenhagen [Brazil], Patricia Vannier [CDS] 26-Jun-2017