A Young, Low-density Stellar Stream in the Milky Way Disk: Theia 456

Simple item page
dc.contributor.authorAndrews, Jeff J.
dc.contributor.authorCurtis, Jason L.
dc.contributor.authorChaname, Julio
dc.contributor.authorAgueros, Marcel A.
dc.contributor.authorSchuler, Simon C.
dc.contributor.authorKounkel, Marina
dc.contributor.authorCovey, Kevin R.
dc.date.accessioned2025-01-20T21:07:27Z
dc.date.available2025-01-20T21:07:27Z
dc.date.issued2022
dc.description.abstractOur view of the variety of stellar structures pervading the local Milky Way has been transformed by the application of clustering algorithms to the Gaia catalog. In particular, several stellar streams have been recently discovered that are comprised of hundreds to thousands of stars and span several hundred parsecs. We analyze one such structure, Theia 456, a low-density stellar stream extending nearly 200 pc and 20 degrees across the sky. By supplementing Gaia astrometric data with spectroscopic metallicities from Large Sky Area Multi-Object Fiber Spectroscopic Telescope and photometric rotation periods from the Zwicky Transient Facility and the Transiting Exoplanet Survey Satellite, we establish Theia 456's radial velocity coherence, and we find strong evidence that members of Theia 456 have a common age (similar or equal to 175 Myr), common dynamical origin, and formed from chemically homogeneous prestellar material ([Fe/H] = -0.07 dex). Unlike well-known stellar streams in the Milky Way, which are in its halo, Theia 456 is firmly part of the thin disk. If our conclusions about Theia 456 can be applied to even a small fraction of the remaining similar or equal to 8300 independent structures in the Theia catalog, such low-density stellar streams may be ubiquitous. We comment on the implications this has for the nature of star formation throughout the Galaxy.
dc.fuente.origenWOS
dc.identifier.doi10.3847/1538-3881/ac6952
dc.identifier.eissn1538-3881
dc.identifier.issn0004-6256
dc.identifier.urihttps://doi.org/10.3847/1538-3881/ac6952
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/93415
dc.identifier.wosidWOS:000797191700001
dc.issue.numero6
dc.language.isoen
dc.revistaAstronomical journal
dc.rightsacceso restringido
dc.titleA Young, Low-density Stellar Stream in the Milky Way Disk: Theia 456
dc.typeartículo
dc.volumen163
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
Files
Collections
Artículos de revistas