Eric Agol, Natalie H. Allen, Björn Benneke, Laetitia Delrez, René Doyon, Elsa Ducrot, Néstor Espinoza, Amélie Gressier, David Lafrenière, Olivia Lim, Jacob Lustig-Yaeger, Caroline Piaulet-Ghorayeb, Michael Radica, Zafar Rustamkulov, Kristin S. Sotzen
{"title":"Updated forecast for TRAPPIST-1 times of transit for all seven exoplanets incorporating JWST data","authors":"Eric Agol, Natalie H. Allen, Björn Benneke, Laetitia Delrez, René Doyon, Elsa Ducrot, Néstor Espinoza, Amélie Gressier, David Lafrenière, Olivia Lim, Jacob Lustig-Yaeger, Caroline Piaulet-Ghorayeb, Michael Radica, Zafar Rustamkulov, Kristin S. Sotzen","doi":"arxiv-2409.11620","DOIUrl":null,"url":null,"abstract":"The TRAPPIST-1 system has been extensively observed with JWST in the\nnear-infrared with the goal of measuring atmospheric transit transmission\nspectra of these temperate, Earth-sized exoplanets. A byproduct of these\nobservations has been much more precise times of transit compared with prior\navailable data from Spitzer, HST, or ground-based telescopes. In this note we\nuse 23 new timing measurements of all seven planets in the near-infrared from\nfive JWST observing programs to better forecast and constrain the future times\nof transit in this system. In particular, we note that the transit times of\nTRAPPIST-1h have drifted significantly from a prior published analysis by up to\ntens of minutes. Our newer forecast has a higher precision, with median\nstatistical uncertainties ranging from 7-105 seconds during JWST Cycles 4 and\n5. Our expectation is that this forecast will help to improve planning of\nfuture observations of the TRAPPIST-1 planets, whereas we postpone a full\ndynamical analysis to future work.","PeriodicalId":501209,"journal":{"name":"arXiv - PHYS - Earth and Planetary Astrophysics","volume":"34 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - Earth and Planetary Astrophysics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2409.11620","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The TRAPPIST-1 system has been extensively observed with JWST in the
near-infrared with the goal of measuring atmospheric transit transmission
spectra of these temperate, Earth-sized exoplanets. A byproduct of these
observations has been much more precise times of transit compared with prior
available data from Spitzer, HST, or ground-based telescopes. In this note we
use 23 new timing measurements of all seven planets in the near-infrared from
five JWST observing programs to better forecast and constrain the future times
of transit in this system. In particular, we note that the transit times of
TRAPPIST-1h have drifted significantly from a prior published analysis by up to
tens of minutes. Our newer forecast has a higher precision, with median
statistical uncertainties ranging from 7-105 seconds during JWST Cycles 4 and
5. Our expectation is that this forecast will help to improve planning of
future observations of the TRAPPIST-1 planets, whereas we postpone a full
dynamical analysis to future work.