SIMBAD references

2020AJ....160..117R - Astron. J., 160, 117-117 (2020/September-0)

The first habitable-zone Earth-sized planet from TESS. II. Spitzer confirms TOI-700 d.

RODRIGUEZ J.E., VANDERBURG A., ZIEBA S., KREIDBERG L., MORLEY C.V., EASTMAN J.D., KANE S.R., SPENCER A., QUINN S.N., CLOUTIER R., HUANG C.X., COLLINS K.A., MANN A.W., GILBERT E., SCHLIEDER J.E., QUINTANA E.V., BARCLAY T., SUISSA G., KOPPARAPU R.K., DRESSING C.D., RICKER G.R., VANDERSPEK R.K., LATHAM D.W., SEAGER S., WINN J.N., JENKINS J.M., BERTA-THOMPSON Z., BOYD P.T., CHARBONNEAU D., CALDWELL D.A., CHIANG E., CHRISTIANSEN J.L., CIARDI D.R., COLON K.D., DOTY J., GAN T., GUERRERO N., GUNTHER M.N., LEE E.J., LEVINE A.M., LOPEZ E., MUIRHEAD P.S., NEWTON E., ROSE M.E., TWICKEN J.D. and VILLASENOR J.N.

Abstract (from CDS):

We present Spitzer 4.5 µm 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 1.144–0.061+0.062R and orbits within its host star's conservative habitable zone with a period of 37.42 days (Teq ∼ 269 K). TOI-700 also hosts two small inner planets (Rb = 1.037–0.064+0.065R and Rc = 2.65–0.15+0.16R) with periods of 9.98 and 16.05 days, respectively. Our Spitzer observations confirm the Transiting Exoplanet Survey Satellite (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 (RV) instruments (expected RV semiamplitude of ∼70 cm s–1).

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Exoplanets - Habitable planets - Habitable zone - Low mass stars - Antarctic observatories - Exoplanet astronomy - Exoplanet detection methods - Exoplanet systems

Simbad objects: 19

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2021.06.16-18:57:01

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