RT Journal Article
T1 A runaway T Tauri star leaving an extended trail
A1 Martí, Josep
A1 Luque Escamilla, Pedro L.
A1 Sánchez Ayaso, Estrella
AB 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.
PB EDP Sciences
SN 0004-6361
SN 1432-0746 (electrónico)
YR 2023
FD 2023-05
LK https://hdl.handle.net/10272/23850
UL https://hdl.handle.net/10272/23850
LA eng
NO Martí, J., Luque-Escamilla, P. L., & Sánchez-Ayaso, E. (2023). A runaway T Tauri star leaving an extended trail. In Astronomy & Astrophysics (Vol. 673, p. A55). EDP Sciences. https://doi.org/10.1051/0004-6361/202245179
NO 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 andSpace Administration. This work is partly based on observations made in theObservatorios de Canarias del IAC with the Nordic Optical Telescope and theIsaac Newton Telescope operated on the island of La Palma by NOTSA and theIsaac Newton Group of Telescopes, and on observations collected at the CentroAstronómico Hispano-Alemán (CAHA) at Calar Alto, operated jointly by Juntade Andalucía and Consejo Superior de Investigaciones Científicas (IAA-CSIC).Authors are also grateful to all other astronomical data repositories used herethat space limits do not allow to enumerate. We additionally express ourgratitude to our colleagues José M. Torrelles (ICE-CSIC) and Luis F. Rodríguez(IRyA-UNAM) for valuable discussions during this work.
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026