A Multi-wavelength, Multi-epoch Monitoring Campaign of Accretion Variability in T Tauri Stars from the ODYSSEUS Survey. II. Photometric Light Curves
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arXiv
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| Autori principali: | , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| author | Wendeborn, John Espaillat, Catherine C. Thanathibodee, Thanawuth Robinson, Connor E. Pittman, Caeley V. Calvet, Nuria Kóspál, Ágnes Grankin, Konstantin N. Walter, Fredrick M. Guo, Zhen Eislöffel, Jochen |
| author_facet | Wendeborn, John Espaillat, Catherine C. Thanathibodee, Thanawuth Robinson, Connor E. Pittman, Caeley V. Calvet, Nuria Kóspál, Ágnes Grankin, Konstantin N. Walter, Fredrick M. Guo, Zhen Eislöffel, Jochen |
| contents | Classical T Tauri Stars (CTTSs) are young, low-mass stars which accrete material from their surrounding protoplanetary disk. To better understand accretion variability, we conducted a multi-epoch, multi-wavelength photometric monitoring campaign of four CTTSs: TW Hya, RU Lup, BP Tau, and GM Aur, in 2021 and 2022, contemporaneous with HST UV and optical spectra. We find that all four targets display significant variability in their light curves, generally on days-long timescales (but in some cases year-to-year) often due to periodicity associated with stellar rotation and to stochastic accretion variability. Their is a strong connection between mass accretion and photometric variability in all bands, but the relationship varies per target and epoch. Thus, photometry should be used with caution as a direct measure of accretion in CTTSs. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_21071 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A Multi-wavelength, Multi-epoch Monitoring Campaign of Accretion Variability in T Tauri Stars from the ODYSSEUS Survey. II. Photometric Light Curves Wendeborn, John Espaillat, Catherine C. Thanathibodee, Thanawuth Robinson, Connor E. Pittman, Caeley V. Calvet, Nuria Kóspál, Ágnes Grankin, Konstantin N. Walter, Fredrick M. Guo, Zhen Eislöffel, Jochen Solar and Stellar Astrophysics Classical T Tauri Stars (CTTSs) are young, low-mass stars which accrete material from their surrounding protoplanetary disk. To better understand accretion variability, we conducted a multi-epoch, multi-wavelength photometric monitoring campaign of four CTTSs: TW Hya, RU Lup, BP Tau, and GM Aur, in 2021 and 2022, contemporaneous with HST UV and optical spectra. We find that all four targets display significant variability in their light curves, generally on days-long timescales (but in some cases year-to-year) often due to periodicity associated with stellar rotation and to stochastic accretion variability. Their is a strong connection between mass accretion and photometric variability in all bands, but the relationship varies per target and epoch. Thus, photometry should be used with caution as a direct measure of accretion in CTTSs. |
| title | A Multi-wavelength, Multi-epoch Monitoring Campaign of Accretion Variability in T Tauri Stars from the ODYSSEUS Survey. II. Photometric Light Curves |
| topic | Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2405.21071 |