THROES: a caTalogue of HeRschel Observations of Evolved Stars. I. PACS range spectroscopy

TL;DR

The paper introduces the THROES catalog, a comprehensive, reprocessed spectroscopic dataset from Herschel's PACS instrument, covering evolved stars in the galaxy, to facilitate future research on stellar evolution.

Contribution

It provides the first extensive, reprocessed PACS spectra for 114 evolved stars, integrating data from multiple infrared observatories into a publicly accessible legacy database.

Findings

Catalog includes spectra for stars from AGB to planetary nebula stages.

Data integration enhances understanding of chemical and physical properties of evolved stars.

Accessible online platform supports future astrophysical research.

Abstract

This is the first of a series of papers presenting the THROES (A caTalogue of HeRschel Observations of Evolved Stars) project, intended to provide a comprehensive overview of the spectroscopic results obtained in the far-infrared (55-670 microns) with the Her- schel space observatory on low-to-intermediate mass evolved stars in our Galaxy. Here we introduce the catalogue of interactively reprocessed PACS (Photoconductor Array Camera and Spectrometer) spectra covering the 55-200 microns range for 114 stars in this category for which PACS range spectroscopic data is available in the Herschel Science Archive (HSA). Our sample includes objects spanning a range of evolutionary stages, from the asymptotic giant branch to the planetary nebula phase, displaying a wide variety of chemical and physical properties. The THROES/PACS catalogue is accessible via a dedicated web-based inter- face (https://throes.cab.inta-csic.es/) and includes not only the science-ready Herschel spectroscopic data for each source, but also complementary photometric and spectroscopic data from other infrared observatories, namely IRAS (Infrared Astronomical Satellite), ISO (Infrared Space Observatory) or AKARI, at overlapping wavelengths. Our goal is to create a legacy-value Herschel dataset that can be used by the scientific community in the future to deepen our knowledge and understanding of these latest stages of the evolution of low-to-intermediate mass stars.