xpy-teal 1.1.2

XPy-Teal: XP Tool for Emission and Absorption Lines

🌌 XPy-Teal: XP Tool for Emission and Absorption Lines

XPy-Teal is a Python version of the tool developed by M. Weiler et al. 2023 for the analysis of Gaia DR3 XP spectra. This repository provides a modular Python toolkit for downloading, processing, and analyzing Gaia DR3 XP (BP/RP) spectra.
It includes tools for XP data retrieval via the Gaia Archive, data calibration, equivalent width measurement, and mathematical utilities for line analysis.

⚠️ Note: The current version only supports the Narrow Line Approximation for equivalent width measurements. See the original paper for more details.

📁 Repository Structure

/
├── src
│   └── xpy_teal
│       ├── Codes
│       │   ├── __init__.py
│       │   ├── config.py
│       │   ├── dataIO.py
│       │   ├── download_xp_spectra.py
│       │   ├── line_analysis.py
│       │   ├── main_MareNostrum.py
│       │   ├── math_tools.py
│       │   ├── spectrum_tools.py
│       │   └── xpy_teal_pipeline.py
│       ├── Configuration_Data
│       │   ├── BasisTransformationMatrix_BP.csv
│       │   ├── BasisTransformationMatrix_RP.csv
│       │   ├── DerivativeMatrix_D1.csv
│       │   ├── DerivativeMatrix_D2.csv
│       │   ├── DerivativeMatrix_D3.csv
│       │   ├── DerivativeMatrix_D4.csv
│       │   ├── HermiteIntegrals.csv
│       │   ├── LSFModel_BP.csv
│       │   ├── LSFModel_RP.csv
│       │   ├── RootMatrix_H.csv
│       │   ├── bpC03_v375wi_dispersion.csv
│       │   ├── bpC03_v375wi_response.csv
│       │   ├── rpC03_v142r_dispersion.csv
│       │   └── rpC03_v142r_response.csv
│       └── __init__.py
├── examples
│   ├── XPy_TEAL_Results
│   │   ├── Test_EqWidths.csv
│   │   ├── Test_Extrema.pkl
│   │   └── xp_continuous_downloaded.csv
│   ├── XPy_TEAL_config.xml
│   ├── source_ids.csv
│   └── tutorial.ipynb
├── LICENSE
├── README.md
├── pyproject.toml
└── uv.lock

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⚙️ Installation

⚡ Option 1 — Using uv (recommended for speed)

uv is a fast, modern Python package manager built by Astral — it handles environments, dependencies, and builds efficiently.

🪄 Step 1 — Install uv

If you don’t have it already, install with:

pip install uv

or (recommended):

curl -LsSf https://astral.sh/uv/install.sh | sh

⚙️ Step 2 — Install XPy-Teal In the root of this repository, run:

uv pip install xpy-teal

🚀 Step 3 — uv sync

uv sync

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🚀 Usage

Here is a simple example of how to use XPy-Teal to run the analysis pipeline on a table of source IDs from Gaia DR3.

from xpy_teal import xpy_teal_pipeline as xpy

results = xpy.run_pipeline(sources_table)

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📄 License

GNU GENERAL PUBLIC LICENSE

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