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Final Report for SAG 21: The Effect of Stellar Contamination on Space-based Transmission Spectroscopy

Authors :
Rackham, Benjamin V.
Espinoza, Néstor
Berdyugina, Svetlana V.
Korhonen, Heidi
MacDonald, Ryan J.
Montet, Benjamin T.
Morris, Brett M.
Oshagh, Mahmoudreza
Shapiro, Alexander I.
Unruh, Yvonne C.
Quintana, Elisa V.
Zellem, Robert T.
Apai, Dániel
Barclay, Thomas
Barstow, Joanna K.
Bruno, Giovanni
Carone, Ludmila
Casewell, Sarah L.
Cegla, Heather M.
Criscuoli, Serena
Fischer, Catherine
Fournier, Damien
Giampapa, Mark S.
Giles, Helen
Iyer, Aishwarya
Kopp, Greg
Kostogryz, Nadiia M.
Krivova, Natalie
Mallonn, Matthias
McGruder, Chima
Molaverdikhani, Karan
Newton, Elisabeth R.
Panja, Mayukh
Peacock, Sarah
Reardon, Kevin
Roettenbacher, Rachael M.
Scandariato, Gaetano
Solanki, Sami
Stassun, Keivan G.
Steiner, Oskar
Stevenson, Kevin B.
Tregloan-Reed, Jeremy
Valio, Adriana
Wedemeyer, Sven
Welbanks, Luis
Yu, Jie
Alam, Munazza K.
Davenport, James R. A.
Deming, Drake
Dong, Chuanfei
Ducrot, Elsa
Fisher, Chloe
Gilbert, Emily
Kostov, Veselin
López-Morales, Mercedes
Line, Mike
Močnik, Teo
Mullally, Susan
Paudel, Rishi R.
Ribas, Ignasi
Valenti, Jeff A.
Rackham, Benjamin V.
Espinoza, Néstor
Berdyugina, Svetlana V.
Korhonen, Heidi
MacDonald, Ryan J.
Montet, Benjamin T.
Morris, Brett M.
Oshagh, Mahmoudreza
Shapiro, Alexander I.
Unruh, Yvonne C.
Quintana, Elisa V.
Zellem, Robert T.
Apai, Dániel
Barclay, Thomas
Barstow, Joanna K.
Bruno, Giovanni
Carone, Ludmila
Casewell, Sarah L.
Cegla, Heather M.
Criscuoli, Serena
Fischer, Catherine
Fournier, Damien
Giampapa, Mark S.
Giles, Helen
Iyer, Aishwarya
Kopp, Greg
Kostogryz, Nadiia M.
Krivova, Natalie
Mallonn, Matthias
McGruder, Chima
Molaverdikhani, Karan
Newton, Elisabeth R.
Panja, Mayukh
Peacock, Sarah
Reardon, Kevin
Roettenbacher, Rachael M.
Scandariato, Gaetano
Solanki, Sami
Stassun, Keivan G.
Steiner, Oskar
Stevenson, Kevin B.
Tregloan-Reed, Jeremy
Valio, Adriana
Wedemeyer, Sven
Welbanks, Luis
Yu, Jie
Alam, Munazza K.
Davenport, James R. A.
Deming, Drake
Dong, Chuanfei
Ducrot, Elsa
Fisher, Chloe
Gilbert, Emily
Kostov, Veselin
López-Morales, Mercedes
Line, Mike
Močnik, Teo
Mullally, Susan
Paudel, Rishi R.
Ribas, Ignasi
Valenti, Jeff A.
Publication Year :
2022

Abstract

Study Analysis Group 21 (SAG21) of the Exoplanet Exploration Program Analysis Group (ExoPAG) was organized to study the effect of stellar contamination on space-based transmission spectroscopy, a method for studying exoplanetary atmospheres by measuring the wavelength-dependent radius of a planet as it transits its star. Transmission spectroscopy relies on a precise understanding of the spectrum of the star being occulted. However, stars are not homogeneous, constant light sources but have temporally evolving photospheres and chromospheres with inhomogeneities like spots, faculae, and plages. This SAG has brought together an interdisciplinary team of more than 100 scientists, with observers and theorists from the heliophysics, stellar astrophysics, planetary science, and exoplanetary atmosphere research communities, to study the current needs that can be addressed in this context to make the most of transit studies from current NASA facilities like HST and JWST. The analysis produced 14 findings, which fall into three Science Themes encompassing (1) how the Sun is used as our best laboratory to calibrate our understanding of stellar heterogeneities ("The Sun as the Stellar Benchmark"), (2) how stars other than the Sun extend our knowledge of heterogeneities ("Surface Heterogeneities of Other Stars") and (3) how to incorporate information gathered for the Sun and other stars into transit studies ("Mapping Stellar Knowledge to Transit Studies").<br />Comment: 122 pages, 30 figures

Details

Database :
OAIster
Publication Type :
Electronic Resource
Accession number :
edsoai.on1312094576
Document Type :
Electronic Resource