The VSPEC Collection: A suite of utilities to model spectroscopic phase curves of 3D exoplanet atmospheres in the presence of stellar variability

Dokumentdetails

ID

oai:arXiv.org:2410.21190

Thema

Astrophysics - Earth and Planetary... Astrophysics - Instrumentation and... Astrophysics - Solar and Stellar A...

Autor

Johnson, Ted M Kelahan, Cameron Mandell, Avi M. Dhahbi, Ashraf Hammond, Tobi Barclay, Thomas Kostov, Veselin B. Villanueva, Geronimo L.

Kategorie

Wissenschaften: Astrophysik

Jahr

2024

Auflistungsdatum

30.10.2024

Schlüsselwörter

spectroscopic astrophysics

Metrisch

Zusammenfassung

We present the Variable Star PhasE Curve (VSPEC) Collection, a set of Python packages for simulating combined-light spectroscopic observations of 3-dimensional exoplanet atmospheres in the presence of stellar variability and inhomogeneity.

VSPEC uses the Planetary Spectrum Generator's Global Emission Spectra (PSG/GlobES) application along with a custom-built multi-component time-variable stellar model based on a user-defined grid of stellar photosphere models to produce spectroscopic light curves of the planet-host system.

VSPEC can be a useful tool for modeling observations of exoplanets in transiting geometries (primary transit, secondary eclipse) as well as orbital phase curve measurements, and is built in a modular and flexible configuration for easy adaptability to new stellar and planetary model inputs.

We additionally present a set of codes developed alongside the core VSPEC modules, including the stellar surface model generator vspec-vsm, the stellar spectral grid interpolation code GridPolator, and a Python interface for PSG, libpypsg.

;Comment: 18 pages, 11 Figures.

To be published in Astronomy & Computing

Johnson, Ted M,Kelahan, Cameron,Mandell, Avi M.,Dhahbi, Ashraf,Hammond, Tobi,Barclay, Thomas,Kostov, Veselin B.,Villanueva, Geronimo L., 2024, The VSPEC Collection: A suite of utilities to model spectroscopic phase curves of 3D exoplanet atmospheres in the presence of stellar variability