Towards a comprehensive view of accretion, inner disks, and extinction in classical T Tauri stars: an ODYSSEUS study of the Orion OB1b Association

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dc.creatorCaeley V. Pittman
dc.creatorPéter Ábrahám
dc.creatorJuan M. Alcalá
dc.creatorSilvia Helena Paixao Alencar
dc.creatorNicole Arulanantham
dc.creatorSylvie Cabrit
dc.creatorJochen Eislöffel
dc.creatorEleonora Fiorellino
dc.creatorKevin France
dc.creatorManuele Gangi
dc.creatorKonstantin Grankin
dc.creatorCatherine C. Espaillat
dc.creatorGregory J. Herczeg
dc.creatorÁgnes Kóspál
dc.creatorIgnacio Mendigutía
dc.creatorJavier Serna
dc.creatorLaura Venuti
dc.creatorConnor E. Robinson
dc.creatorThanawuth Thanathibodee
dc.creatorNuria Calvet
dc.creatorJohn Wendeborn
dc.creatorJesus Hernández
dc.creatorCarlo F. Manara
dc.creatorFred Walter
dc.date.accessioned2023-10-31T21:40:49Z
dc.date.accessioned2025-09-09T00:28:48Z
dc.date.available2023-10-31T21:40:49Z
dc.date.issued2022-11
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.3847/1538-3881/ac898d
dc.identifier.issn1538-3881
dc.identifier.urihttps://hdl.handle.net/1843/60406
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofThe Astronomical Journal
dc.rightsAcesso Aberto
dc.subjectAstronomia
dc.subjectEstrelas - Formação
dc.subject.otherPre-main sequence stars
dc.subject.otherStellar accretion
dc.subject.otherStellar accretion disks
dc.subject.otherProtoplanetary disks
dc.subject.otherReddening law
dc.subject.otherInterstellar extinction
dc.subject.otherHubble Space Telescope
dc.subject.otherVery Large Telescope
dc.titleTowards a comprehensive view of accretion, inner disks, and extinction in classical T Tauri stars: an ODYSSEUS study of the Orion OB1b Association
dc.typeArtigo de periódico
local.citation.epage16
local.citation.issue5
local.citation.spage1
local.citation.volume164
local.description.resumoThe coevolution of T Tauri stars and their surrounding protoplanetary disks dictates the timescales of planet formation. In this paper, we present magnetospheric accretion and inner disk wall model fits to near-UV (NUV) to near-IR (NIR) spectra of nine classical T Tauri stars in Orion OB1b as part of the Outflows and Disks around Young Stars: Synergies for the Exploration of ULLYSES Spectra (ODYSSEUS) survey. Using NUV–optical spectra from the Hubble UV Legacy Library of Young Stars as Essential Standards (ULLYSES) Director's Discretionary Program and optical–NIR spectra from the PENELLOPE VLT Large Programme, we find that the accretion rates of these targets are relatively high for the region's intermediate age of 5.0 Myr; rates are in the range of (0.5–17.2) × 10−8 M☉ yr−1, with a median value of 1.2 × 10−8 M☉ yr−1. The NIR excesses can be fit with 1200–1800 K inner disk walls located at 0.05–0.10 au from the host stars. We discuss the significance of the choice in extinction law, as the measured accretion rate depends strongly on the adopted extinction value. This analysis will be extended to the complete sample of T Tauri stars being observed through ULLYSES to characterize accretion and inner disks in star-forming regions of different ages and stellar populations.
local.identifier.orcidhttps://orcid.org/0000-0002-5171-8376
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://iopscience.iop.org/article/10.3847/1538-3881/ac898d

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