The NewEra model grid

Abstract

Analyses of stellar spectra, stellar populations, and transit light curves rely on grids of synthetic spectra and center-to-limb variations (limb darkening) from model stellar atmospheres. Extensive model grids from PHOENIX, a generalized non-LTE 1D and 3D stellar atmosphere code, have found widespread use in the astronomical community, however current PHOENIX/1D models have been substantially improved over the last decade. To make these improvements available to the community, we have constructed the NewEra LTE model grid consisting of 37438 models with $2300K\le T_{eff}\le 12000K$, $0.0\le log(g)\le 6.0$ metallicities [M/H] from $-4.0$ to $+0.5$, and for metallicities $-2.0\le [M/H]\le 0.0$ additional $\alpha$ element variations from $-0.2\le [\alpha /\mathrm{Fe}]\le +1.2$ are included. The models use databases of 851 million atomic lines and 834 billion molecular lines and employ the Astrophysical Chemical Equilibrium Solver for the equation of state. All models in the NewEra grid have been calculated in spherical symmetry because center-to-limb variation differences from plane-parallel models are quite large for giants and not insignificant for dwarfs. All model data are provided in the Hierarchical Data Format 5 (HDF5) format, including low and high sampling rate spectra. These files also include a variety of details about the models, such as the exact abundances and isotopic patterns used and results of the atomic and molecular line selection. Although the model structures have small differences with the previous grid generation, the spectra show significant differences, mostly due to the updates of the molecular line lists.

Astronomy & Astrophysics, in press, aa54171-25, accepted 23/04/2025

References in corpus (74)

• A new extensive library of PHOENIX stellar atmospheres and synthetic spectra
• Clouds in the atmosphere of the super-Earth exoplanet GJ 1214b
• ExoMol molecular line lists XXX: a complete high-accuracy line list for water
• The ExoMol database: molecular line lists for exoplanet and other hot atmospheres
• ExoMol line lists IV: The rotation-vibration spectrum of methane up to 1500 K
• Clouds and Chemistry in the Atmosphere of Extrasolar Planet HR8799b
• ExoMol line lists III: An improved hot rotation-vibration line list for HCN and HNC
• CH in stellar atmospheres: an extensive linelist
• ExoMol Molecular linelists -- XXXIII. The spectrum of Titanium Oxide
• ExoMol molecular line lists XXXV: a rotation-vibration line list for hot ammonia
• Improved HCN/HNC linelist, model atmospheres and synthetic spectra for WZ Cas
• ExoMol molecular line lists - XVI: The rotation-vibration spectrum of hot H${}_2$S
• ExoMol line lists XVIII. The high temperature spectrum of VO
• ExoMol line lists -- XXXIX. Ro-vibrational molecular line list for CO${}_2$
• ExoMol molecular line lists - XIV: The rotation-vibration spectrum of hot SO${}_2$
• ExoMol line lists VII: The rotation-vibration spectrum of phosphine up to 1500 K
• A hybrid line list for CH${}_4$ and hot methane continuum
• ExoMol line lists II: The ro-vibrational spectrum of SiO
• ExoMol molecular line lists V: The ro-vibrational spectra of NaCl and KCl
• ExoMol molecular line lists -- XXXVII: spectra of acetylene
• Atmospheric Characterization of the Hot Jupiter Kepler-13Ab
• Vibrational transition moments of CH${}_4$ from first principles
• The full infrared spectrum of molecular hydrogen
• The CARMENES search for exoplanets around M dwarfs - Photospheric parameters of target stars from high-resolution spectroscopy
• Predicting the Extreme Ultraviolet Radiation Environment of Exoplanets Around Low-Mass Stars: the TRAPPIST-1 System
• Broad-band photometric colors and effective temperature calibrations for late-type giants. I. Z=0.02
• ExoMol molecular line lists - XXVII: spectra of C2H4
• The CARMENES search for exoplanets around M dwarfs -- Photospheric parameters of target stars from high-resolution spectroscopy. II. Simultaneous multiwavelength range modeling of activity insensitive lines
• ExoMol line lists VIII: A variationally computed line list for hot formaldehyde
• ExoMol molecular line lists - XIII: The spectrum of CaO
• Spectroscopic Constants, Abundances, and Opacities of the TiH Molecule
• ExoMol molecular line lists - XXIII: spectra of PO and PS
• ExoMol line lists XXIV: A new hot line list for silicon monohydride, SiH
• ExoMol Line List XXI: Nitric Oxide (NO)
• Radiative cooling functions for primordial molecules
• ExoMol line lists XXVIII: The rovibronic spectrum of AlH
• ExoMol line lists -- XLIV. IR and UV line list for silicon monoxide (SiO)
• Marvel analysis of the measured high-resolution rovibrational spectra of H2S
• ExoMol line lists XXXI: Spectroscopy of lowest eights electronic states of C${}_2$
• ExoMol molecular line lists X: The spectrum of sodium hydride
• The spectrum of N${}_2$ from 4,500 to 15,700 cm${}^{-1}$ revisited with PGOPHER
• ExoMol molecular line lists XX: a comprehensive line list for H${}_3^{+}$
• The calculated rovibronic spectrum of scandium hydride, ScH
• A theoretical room-temperature line list for 15NH3
• ExoMol molecular line lists XII: Line Lists for 8 isotopologues of CS
• ExoMol molecular line lists XXXVI: $X{}^2\Pi -X{}^2\Pi$ and $A{}^2{\Sigma }^{+}-X{}^2\Pi$ transitions of SH
• ExoMol line lists - XXXII. The rovibronic spectrum of MgO
• Full Spectroscopic Model and Trihybrid Experimental-Perturbative-Variational Line List for CN
• Exomol molecular line lists VI: A high temperature line list for Phosphorus Nitride
• ExoMol molecular line lists - XVII The rotation-vibration spectrum of hot SO${}_3$
• ExoMol line lists -- XXII. The rotation-vibration spectrum of silane up to 1200 K
• An update to the MARVEL dataset and ExoMol line list for 12C2
• ExoMol molecular line lists - XXVI: spectra of SH and NS
• ExoMol molecular line lists -- XLII: Rovibronic molecular line list for the low-lying states of NO
• ExoMol line lists XXV: A hot line list for silicon sulphide, SiS
• ExoMol line lists XV: A new hot line list for hydrogen peroxide
• ExoMol line lists -- XXXVIII. High-temperature molecular line list of silicon dioxide (SiO${}_2$)
• ExoMol molecular line lists: XI The spectrum of nitric acid
• Calculation of Electric Quadrupole Linestrengths for Diatomic Molecules: Application to the H2, CO, HF and O2 Molecules
• A Variationally Computed IR Line List for the Methyl Radical CH${}_3$
• Spectroscopy of YO from first principles
• ExoMol line lists -- XLV. Rovibronic molecular line lists of calcium monohydride (CaH) and magnesium monohydride (MgH)
• ExoMol line lists -- XLI. High-temperature molecular line lists for the alkali metal hydroxides KOH and NaOH
• The high-temperature rotation-vibration spectrum and rotational clustering of silylene (SiH${}_2$)
• ExoMol line lists - XXIX. The rotation-vibration spectrum of methyl chloride up to 1200 K
• ExoMol line lists -- XL. Ro-vibrational molecular line list for the hydronium ion (H${}_3$O${}^{+}$)
• ExoMol line list XXXIV: A Rovibrational Line List for Phosphinidene (PH) in its $X{}^3{\Sigma }^{-}$ and $a{}^1\Delta$ Electronic States
• ExoMol molecular line lists -- XLIII: Rovibronic molecular line list the low-lying two states of NaO
• ExoMol line lists -- XLVII. Rovibronic molecular line list of the calcium monohydroxide radical (CaOH)
• A variationally computed room temperature line list for AsH${}_3$
• Ultraviolet Line Identifications and Spectral Formation Near Max-Light in Type Ia Supernovae 2011fe
• A Self-Consistent NLTE-Spectra Synthesis Model of FeLoBAL QSOs
• ExoMol line lists -- {XLVI}: Empirical rovibronic spectra of silicon mononitrate (SiN) covering the 6 lowest electronic states and 4 isotopologues
• Limb Darkening and Planetary Transits II: Intensity profile correction factors for a grid of model stellar atmospheres

Cited by in corpus (8)

• GEMS JWST: Transmission spectroscopy of TOI-5205b reveals significant stellar contamination and a metal-poor atmosphere
• Limb-Darkening Coefficients for the 4-Term and Power-2 Laws for the JWST Space Mission, Adopting PHOENIX Spherical Models at High Resolution
• A Panchromatic JWST Spectrum of a Giant Starspot on the Fully Convective M-dwarf TOI-3884
• KRONOS I: The $1-2.8\mu$m JWST Transmission Spectrum of the 23 Myr V1298 Tau c
• The asymmetric structure of the inner disc around HD 142527 A with VLTI/MATISSE
• JWST high-contrast spectroscopy with speckle modelling: Atmospheric retrievals of the T dwarf companion HD 19467 B
• The CARMENES search for exoplanets around M dwarfs. A homogeneous catalogue of projected rotational velocities accounting for limb-darkening
• Molecular Similarity and Water Diversity in Coeval Binary Disks: JWST/MIRI Observations of Sz 65 and Sz 66