Stellar Contamination Correction Using Back-to-back Transits of TRAPPIST-1 b and c

Stellar Contamination Correction Using Back-to-back Transits of TRAPPIST-1 b and c

Stellar surface heterogeneities, such as spots and faculae, often contaminate exoplanet transit spectra, hindering precise atmospheric characterization. We demonstrate a novel, epoch-based, model-independent method to mitigate stellar contamination, applicable to multiplanet systems with at least on...

Full description

Saved in:

Bibliographic Details
Main Authors:	Alexander D. Rathcke, Lars A. Buchhave, Julien de Wit, Benjamin V. Rackham, Prune C. August, Hannah Diamond-Lowe, João M. MendonÇa, Aaron Bello-Arufe, Mercedes López-Morales, Daniel Kitzmann, Kevin Heng
Format:	Article
Language:	English
Published:	IOP Publishing 2025-01-01
Series:	The Astrophysical Journal Letters
Subjects:	Transmission spectroscopy Stellar atmospheres Planet hosting stars Exoplanet atmospheres Fundamental parameters of stars Starspots
Online Access:	https://doi.org/10.3847/2041-8213/ada5c7
Tags:	Add Tag No Tags, Be the first to tag this record!

Similar Items

Strict Limits on Potential Secondary Atmospheres on the Temperate Rocky Exo-Earth TRAPPIST-1 d
by: Caroline Piaulet-Ghorayeb, et al.
Published: (2025-01-01)

Promise and Peril: Stellar Contamination and Strict Limits on the Atmosphere Composition of TRAPPIST-1 c from JWST NIRISS Transmission Spectra
by: Michael Radica, et al.
Published: (2025-01-01)

The Impact of Stellar Flares on the Atmospheric Escape of Exoplanets Orbiting M Stars. I. Insights from the AU Mic System
by: Laura N. R. do Amaral, et al.
Published: (2025-01-01)

Biosignature False Positives in Potentially Habitable Planets around M Dwarfs: The Effect of UV Radiation from One Flare
by: Arturo Miranda-Rosete, et al.
Published: (2025-01-01)

An HST Transmission Spectrum of the Closest M Dwarf Transiting Rocky Planet LTT 1445Ab
by: Katherine A. Bennett, et al.
Published: (2025-01-01)

Minimizing Star-spot Contamination of Exoplanet Transit Spectroscopy Using Alternate Normalization
by: Drake Deming, et al.
Published: (2025-01-01)

On the Local Formation of the TRAPPIST-1 Exoplanets
by: Matthew S. Clement, et al.
Published: (2024-01-01)

Magnetic Activities of Wolf 359: Starspot Distribution and Quasiperiodic Pulsation Using TESS Data
by: Diya Ram, et al.
Published: (2025-01-01)

Planetary Obliquity Excitation through Pre-main-sequence Stellar Evolution
by: Sidhant Kumar Suar, et al.
Published: (2025-01-01)

The Receding Cosmic Shoreline of Mid-to-late M Dwarfs: Measurements of Active Lifetimes Worsen Challenges for Atmosphere Retention by Rocky Exoplanets
by: Emily K. Pass, et al.
Published: (2025-01-01)

Magnetic Activities of AD Leonis: Flares in TESS Data and Optical Spectra
by: Diya Ram, et al.
Published: (2025-01-01)

Flares on TRAPPIST-1 Reveal the Spectrum of Magnetic Features on Its Surface
by: Valeriy Vasilyev, et al.
Published: (2025-01-01)

The Influence of Stellar Chromospheres and Coronae on Exoplanet Transmission Spectroscopy
by: Volker Perdelwitz, et al.
Published: (2025-01-01)

Planets Around Solar Twins/Analogs (PASTA). I. High-precision Stellar Chemical Abundances for 17 Planet-hosting Stars and the Condensation Temperature Trend
by: Qinghui Sun, et al.
Published: (2025-01-01)

A New Hybrid Machine Learning Method for Stellar Parameter Inference
by: Sujay Shankar, et al.
Published: (2025-01-01)

The Age and High-energy Environment of the Very Young Transiting Exoplanet TOI 1227b
by: Attila Varga, et al.
Published: (2025-01-01)

Effects of Transient Stellar Emissions on Planetary Climates of Tidally Locked Exo-Earths
by: Howard Chen, et al.
Published: (2025-01-01)

Spot Distribution and Evolution on Two New Active Binaries Discovered in the YNHK Survey
by: Jianhua Wang, et al.
Published: (2025-01-01)

Spectroscopically Resolved Partial Phase Curve of the Rapid Heating and Cooling of the Highly Eccentric Hot Jupiter HAT-P-2b with WFC3
by: Bob Jacobs, et al.
Published: (2025-01-01)

The Effect of Stellar Magnetic Activity on Measurements of Morning and Evening Asymmetry of Planetary Terminator
by: N. Kostogryz, et al.
Published: (2025-01-01)

Starspots as an Explanation for the Mysterious IYJ Continuum Excess Emission in Classical T Tauri Stars
by: Facundo Pérez Paolino, et al.
Published: (2024-01-01)

A Spectroscopic Survey of Metal-poor OB Stars in Local Dwarf Galaxy NGC 3109
by: Abby Mintz, et al.
Published: (2025-01-01)

Volatile-rich Sub-Neptunes as Hydrothermal Worlds: The Case of K2-18 b
by: Cindy N. Luu, et al.
Published: (2024-01-01)

HCN and C2H2 in the Atmosphere of a T8.5+T9 Brown Dwarf Binary
by: Elisabeth C. Matthews, et al.
Published: (2025-01-01)

Formation of Near-surface Atmospheric Inversion and Surface Inversion in Hothouse Climates
by: Jiachen Liu, et al.
Published: (2025-01-01)

The Radiative Effects of Photochemical Hazes on the Atmospheric Circulation and Phase Curves of Sub-Neptunes
by: Maria E. Steinrueck, et al.
Published: (2025-01-01)

Minute-cadence Observations of the LAMOST Fields with the TMTS. VI. Physical Parameters of Contact Binaries
by: Qiqi Xia, et al.
Published: (2025-01-01)

Ages of Stars and Planets in the Kepler Field Younger than Four Billion Years
by: Luke G. Bouma, et al.
Published: (2024-01-01)

A Panchromatic Characterization of the Evening and Morning Atmosphere of WASP-107 b: Composition and Cloud Variations, and Insight into the Effect of Stellar Contamination
by: Matthew M. Murphy, et al.
Published: (2025-01-01)

PEPSI Investigation, Retrieval, and Atlas of Numerous Giant Atmospheres (PIRANGA). I. The Ubiquity of Fe i Emission and Inversions in Ultrahot Jupiter Atmospheres
by: Sydney Petz, et al.
Published: (2025-01-01)

The Emerging Class of Double-faced White Dwarfs
by: Adam Moss, et al.
Published: (2025-01-01)

The Effects of the Carbon-to-oxygen Ratio on the Condensate Compositions around Solar-like Stars
by: Cody J. Shakespeare, et al.
Published: (2025-01-01)

Preparing for the Early eVolution Explorer: Characterizing the Photochemical Inputs and Transit Detection Efficiencies of Young Planets Using Multiwavelength Flare Observations by TESS and Swift
by: Ward S. Howard, et al.
Published: (2024-01-01)

Nonlinear and Nonmonotonic Effect of Ocean Tidal Mixing on Exoplanet Climates and Habitability
by: Maria Di Paolo, et al.
Published: (2025-01-01)

Stellar Models Also Limit Exoplanet Atmosphere Studies in Emission
by: Thomas J. Fauchez, et al.
Published: (2025-01-01)

Atmospheric Mass Loss from TOI-1259 A b, a Gas Giant Planet with a White Dwarf Companion
by: Morgan Saidel, et al.
Published: (2025-01-01)

Simulating Chemical Abundances in the Circumstellar Nebula of the Late Stage Binary RY Scuti
by: Sarah H. Taft, et al.
Published: (2025-01-01)

Asteroseismic Characterization of 142 Solar-like Oscillators Hosting Confirmed Exoplanets
by: Wen-Xu Lin, et al.
Published: (2025-01-01)

Searching for GEMS: Confirmation of TOI-5573 b, a Cool, Saturn-like Planet Orbiting an M Dwarf
by: Rachel B. Fernandes, et al.
Published: (2025-01-01)

Characterizing the Radiative–Convective Structure of Dense Rocky Planet Atmospheres
by: Jessica Cmiel, et al.
Published: (2025-01-01)