학술논문
The First Habitable Zone Earth-Sized Planet From TESS II: $Spitzer$ Confirms TOI-700 d
Document Type
Working Paper
Author
Rodriguez, Joseph E.; Vanderburg, Andrew; Zieba, Sebastian; Kreidberg, Laura; Morley, Caroline V.; Eastman, Jason D.; Kane, Stephen R.; Spencer, Alton; Quinn, Samuel N.; Cloutier, Ryan; Huang, Chelsea X.; Collins, Karen A.; Mann, Andrew W.; Gilbert, Emily; Schlieder, Joshua E.; Quintana, Elisa V.; Barclay, Thomas; Suissa, Gabrielle; Kopparapu, Ravi kumar; Dressing, Courtney D.; Ricker, George R.; Vanderspek, Roland K.; Latham, David W.; Seager, Sara; Winn, Joshua N.; Jenkins, Jon M.; Berta-Thompson, Zachory; Boyd, Patricia T.; Charbonneau, David; Caldwell, Douglas A.; Chiang, Eugene; Christiansen, Jessie L.; Ciardi, David R.; Colón, Knicole D.; Doty, John; Gan, Tianjun; Guerrero, Natalia; Günther, Maximilian N.; Lee, Eve J.; Levine, Alan M.; Lopez, Eric; Muirhead, Philip S.; Newton, Elisabeth; Rose, Mark E.; Twicken, Joseph D.; Villaseñor, Jesus Noel
Source
Subject
Language
Abstract
We present $Spitzer$ 4.5$\mu$m observations of the transit of TOI-700 d, a habitable zone Earth-sized planet in a multiplanet system transiting a nearby M-dwarf star (TIC 150428135, 2MASS J06282325-6534456). TOI-700 d has a radius of $1.144^{+0.062}_{-0.061}R_\oplus$ and orbits within its host star's conservative habitable zone with a period of 37.42 days ($T_\mathrm{eq} \sim 269$K). TOI-700 also hosts two small inner planets (R$_b$=$1.037^{+0.065}_{-0.064}R_\oplus$ & R$_c$=$2.65^{+0.16}_{-0.15}R_\oplus$) with periods of 9.98 and 16.05 days, respectively. Our $Spitzer$ observations confirm the TESS detection of TOI-700 d and remove any remaining doubt that it is a genuine planet. We analyze the $Spitzer$ light curve combined with the 11 sectors of TESS observations and a transit of TOI-700 c from the LCOGT network to determine the full system parameters. Although studying the atmosphere of TOI-700 d is not likely feasible with upcoming facilities, it may be possible to measure the mass of TOI-700 d using state-of-the-art radial velocity instruments (expected RV semi-amplitude of $\sim$70 cm/s).
Comment: 14 Pages, 5 Figures, 2 Tables, Accepted to AJ
Comment: 14 Pages, 5 Figures, 2 Tables, Accepted to AJ