# XTgrid Live: Online spectral analyses with Tlusty models

## TL;DR

This paper introduces XTgrid Live, a web-based interface for Tlusty models that simplifies the use of complex non-LTE stellar atmosphere models, making spectral analysis more accessible and routine.

## Contribution

It develops a web-service for XTgrid, enabling easier and more widespread use of non-LTE models in spectral analysis of early type stars.

## Key findings

- Web-based XTgrid interface enhances accessibility.
- Facilitates routine spectral analysis with complex models.
- Reduces computational barriers for non-LTE modeling.

## Abstract

Non-LTE model atmospheres are in the forefront of quantitative spectral analyses of early type stars. Yet, such models are barely used in large surveys or even for individual systems. The major reason for this is likely the extreme calculation requirements to construct such physically realistic models. To relieve this, we have developed a web-service for the spectral analysis program {\sc XTgrid}, which is meant to be a handy interface to {\sc Tlusty}. Having the procedure available from a web browser makes spectral analyses a routine.