Exoplanetology: Exoplanets & Exomoons

The SHERLOCK Pipeline: New Exoplanet Candidates In The WASP-16, HAT-P-27, HAT-P-26, and TOI-2411 Systems

By Keith Cowing

Status Report

astro-ph.EP

July 25, 2024

Filed under astro-ph.EP, astronomy, exoplanet, HAT-P-26, HAT-P-27, SHERLOCK pipeline, TESS, TESS Objects of Interest, TOI-2411, WASP-16

The SHERLOCK Pipeline: New Exoplanet Candidates In The WASP-16, HAT-P-27, HAT-P-26, and TOI-2411 Systems — The planetary architectures of the systems WASP-16, HAT-P-27, HAT-P-26, and TOI-2411 are shown from top to bottom. The sizes of the elements in this figure scale with the sizes of the represented stars and planets. The sizes of the stars are scaled relative to each other, and the planets are scaled relative to each other, but the relative scales between stars and planets are not accurate, with planets oversized for clearer visualization. Known planets in the systems are displayed in solid colors, while the candidates found in this study are highlighted with a gray halo and transparency, whose properties are listed in Table 3. — astro-ph.EP

The launches of NASA Kepler and TESS missions have significantly enhanced the interest in the exoplanet field during the last 15 years, providing a vast amount of public data that is being exploited by the community thanks to the continuous development of new analysis tools.

However, using these tools is not straightforward, and users must dive into different codes, input-output formats, and methodologies, hindering an efficient and robust exploration of the available data. We present the SHERLOCK pipeline, an end-to-end public software that allows the users to easily explore observations from space-based missions such as TESS or Kepler to recover known planets and candidates issued by the official pipelines and search for new planetary candidates that remained unnoticed.

The pipeline incorporates all the steps to search for transit-like features, vet potential candidates, provide statistical validation, conduct a Bayesian fitting, and compute observational windows from ground-based observatories. Its performance is tested against a catalog of known and confirmed planets from the TESS mission, trying to recover the official TESS Objects of Interest (TOIs), explore the existence of companions that have been missed, and release them as new planetary candidates.

SHERLOCK demonstrated an excellent performance, recovering 98% of the TOIs and confirmed planets in our test sample and finding new candidates. Specifically, we release four new planetary candidates around the systems WASP-16 (with P∼10.46 d and R∼2.20 R_⊕), HAT-P-27 (with P∼1.20 d and R∼4.33 R_⊕), HAT-P-26 (with P∼6.59 d and R∼1.97 R_⊕), and TOI-2411 (with P∼18.75 d and R∼2.88 R_⊕).

Martín Dévora-Pajares (1 and 2), Francisco J. Pozuelos (3), Antoine Thuillier (5 and 6), Mathilde Timmermans (4), Valérie Van Grootel (5), Victoria Bonidie (7 and 8), Luis Cerdeño Mota, Juan C. Suárez (1) ((1) Dpto. Física Teórica y del Cosmos, Universidad de Granada. Granada, Spain, (2) Avature Machine Learning, Spain (3) Instituto de Astrofísica de Andalucía (IAA-CSIC), Granada (4) Astrobiology Research Unit, Université de Liège, Liège, Belgium (5) Space Sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Liège, Belgium (6) Institut d’Astronomie et d’Astrophysique, Université Libre de Bruxelles (ULB), Bruxelles, Belgium (7) Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USA (8) Pittsburgh Particle Physics, Astrophysics, and Cosmology Center (PITT PACC), University of Pittsburgh, Pittsburgh, PA 15260, USA)

Comments: 23 pages, 14 figures, 4 tables, This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society Published by Oxford University Press on behalf of the Royal Astronomical Society
Subjects: Earth and Planetary Astrophysics (astro-ph.EP); Instrumentation and Methods for Astrophysics (astro-ph.IM)
Cite as: arXiv:2407.14602 [astro-ph.EP] (or arXiv:2407.14602v1 [astro-ph.EP] for this version)
https://doi.org/10.48550/arXiv.2407.14602
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Related DOI:
https://doi.org/10.1093/mnras/stae1740
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Submission history
From: Martín Dévora-Pajares
[v1] Fri, 19 Jul 2024 18:00:47 UTC (6,870 KB)
https://arxiv.org/abs/2407.14602

Astrobiology

Keith Cowing

Explorers Club Fellow, ex-NASA Space Station Payload manager/space biologist, Away Teams, Journalist, Lapsed climber, Synaesthete, Na’Vi-Jedi-Freman-Buddhist-mix, ASL, Devon Island and Everest Base Camp veteran, (he/him) 🖖🏻

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