Détail du document
Identifiant
oai:arXiv.org:2411.12716
Sujet
Astrophysics - Solar and Stellar A...Auteur
Paolino, Facundo Pérez Bary, Jeff Hillenbrand, Lynne Markham, Madison Fischer, WilliamCatégorie
sciences : astrophysique
Année
2024
Date de référencement
27/11/2024
Mots clés
stellar continuum excess starsRésumé
An accurate estimation of the continuum excess emission from accretion spots and inner circumstellar disk regions is crucial for a proper derivation of fundamental stellar parameters in accreting systems.
However, the presence of starspots can make disentangling the complicated multi-component emission in these systems challenging.
Subtraction of a single-temperature spectral template is insufficient to account for the composite stellar emission, as we demonstrated in a recent campaign involving Weak-Lined T Tauri Stars.
Here, we model the moderate resolution near-infrared spectra of Classical T Tauri Stars, presenting new spectral models that incorporate spotted stars plus emission from accretion hot-spots and a warm inner disk, allowing us to simultaneously reconstruct the entire 0.8-2.4 micrometer spectrum of our sixteen targets.
Using these models, we re-derive the continuum excess emission.
Our results indicate that accounting for starspots resolves the need to include a previously proposed intermediate temperature component in the IYJ excess, and highlights the importance of a proper treatment of starspots in studies of accreting low-mass stars.
;Comment: Accepted for publication in ApJ
Paolino, Facundo Pérez,Bary, Jeff,Hillenbrand, Lynne,Markham, Madison,Fischer, William, 2024, Starspots as an Explanation for the Mysterious IYJ Continuum Excess Emission in Classical T Tauri Stars
Hespi: A pipeline for automatically detecting information from hebarium specimen sheets
science recognition institutional detects text-based text pipeline specimen
