The TOI Solar Analog Spectroscopic Survey (TSASS) I. Solar Depletion Pattern of Refractory Elements Among 17 Analogs
Authors/Creators
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1.
Tsinghua University
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2.
Shanghai Jiao Tong University
- 3. Université de Montréal
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4.
Flatiron Institute
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5.
National Astronomical Observatories
- 6. ARC Centre for All Sky Astrophysics in 3D (ASTRO-3D)
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7.
Swinburne University of Technology
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8.
Monash University
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9.
Australian National University
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10.
The Ohio State University
- 11. Observatories of the Carnegie Institution of Washington
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12.
San Francisco State University
Contributors
Editor:
Description
High-resolution spectroscopy has revealed that the Sun is depleted in refractory elements compared to other nearby solar analogs, and the existence or ingestion of planets are believed to leave such chemical imprints on their host stars. Previous works have quantified this solar chemical anomaly by defining a slope in abundance [X/H] as a function of condensation temperature, known as the Tc trend (Meléndez et al. 2009, Bedell et al. 2018). Various scenarios have been proposed to explain its nature, including solids locked up by terrestrial planets (Chambers 2010), trapping of dust by giants (Booth & Owen 2020) and planet engulfment (Oh et al. 2018). The TOI Solar Analog Spectroscopic Survey will follow up ~80 TOIs that host known planetsor candidates using high-quality spectra taken by Magellan MIKE and EXPRES on Lowell Discovery Telescope. We will identify alternative indicators aside from the Tc trend to explore links (or lack of) between planet existence and chemical abundancesof host stars.
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Additional details
References
- Meléndez 2009
- Bedell+ 2018
- Chambers 2010
- Booth & Owen 2020
- Oh+ 2018
- Ramírez+ 2018
- F. Liu+ 2024
- Rampalli+ 2024