@article{10272/23850,
year = {2023},
month = {5},
url = {https://hdl.handle.net/10272/23850},
abstract = {Aims. We address the problem of young stellar objects that are found too far away from possible star formation sites. Different mechanisms have been proposed before to explain this unexpected circumstance. The idea of high-velocity protostars is one of these mechanisms, although observational support is not always easy to obtain. We aim to shed light on this issue after the serendipitous discovery of a related stellar system.
Methods. Following the inspection of archival infrared data, a peculiar anonymous star was found that apparently heads a long tail that resembles a wake-like feature. We conducted a multiwavelength analysis including photometry, astrometry, and spectroscopy. Together with theoretical physical considerations, this approach provided a reasonable knowledge of the stellar age and kinematic properties, together with compelling indications that the extended feature is indeed the signature of a high-velocity, or runaway, newborn star.
Results. Our main result is the discovery of a low-mass young stellar object that fits the concept of a runaway T Tauri star that was hypothesized several decades ago. In this peculiar star, nicknamed UJT-1, the interaction of the stellar wind with the surrounding medium becomes extreme. Under reasonable assumptions, this unusual degree of interaction has the potential to encode the mass-loss history of the star on timescales of several ∼105 years.},
organization = {We acknowledge support by Agencia Estatal de Investigación of the Spanish Ministerio de Ciencia, Innovación y Universidades grant PID2019-105510GB-C32/AEI/ 10.13039/501100011033 and FEDER “Una manera de hacer Europa", as well as Programa Operativo FEDER 2014-2020 Consejería de Economía y Conocimiento de la Junta de Andalucía
(Refs. A1123060E00010 and FQM-322). This publication makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Ángeles, and the Jet Propulsion Laboratory/
California Institute of Technology, funded by the National Aeronautics and
Space Administration. This work is partly based on observations made in the
Observatorios de Canarias del IAC with the Nordic Optical Telescope and the
Isaac Newton Telescope operated on the island of La Palma by NOTSA and the
Isaac Newton Group of Telescopes, and on observations collected at the Centro
Astronómico Hispano-Alemán (CAHA) at Calar Alto, operated jointly by Junta
de Andalucía and Consejo Superior de Investigaciones Científicas (IAA-CSIC).Authors are also grateful to all other astronomical data repositories used here
that space limits do not allow to enumerate. We additionally express our
gratitude to our colleagues José M. Torrelles (ICE-CSIC) and Luis F. Rodríguez
(IRyA-UNAM) for valuable discussions during this work.},
publisher = {EDP Sciences},
title = {A runaway T Tauri star leaving an extended trail},
doi = {10.1051/0004-6361/202245179},
author = {Martí, Josep and Luque Escamilla, Pedro L. and Sánchez Ayaso, Estrella},
}