2020AJ....160..117R

Query : 2020AJ....160..117R

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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Number of rows : 19
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME G 268-38b Pl 00 44 59.3309137511 -15 16 17.542839990           ~ 237 0
2 K2-133e Pl 04 40 35.6391087000 +25 00 36.048117816           ~ 8 0
3 NAME SEP reg 06 00 00.000 -66 33 38.55           ~ 198 0
4 TOI-700 PM* 06 28 23.2285331376 -65 34 45.520447908   14.524 13.076 12.659 10.70 M2V 84 0
5 TOI-700d Pl 06 28 23.2285331376 -65 34 45.520447908           ~ 64 0
6 TOI-700c Pl 06 28 23.2285331376 -65 34 45.520447908           ~ 17 0
7 TOI-700b Pl 06 28 23.2285331376 -65 34 45.520447908           ~ 18 0
8 K2-3d Pl 11 29 20.3917077216 -01 27 17.281697868           ~ 57 0
9 K2-18b Pl 11 30 14.5177445592 +07 35 18.255348492           ~ 303 0
10 K2-9b Pl 11 45 03.4701604392 +00 00 19.058392872           ~ 22 0
11 Kepler-62 Er* 18 52 51.0518497680 +45 20 59.399622996   14.702 13.982 13.807   G5 158 1
12 Kepler-62f Pl 18 52 51.0518497680 +45 20 59.399622996           ~ 88 1
13 Kepler-442b Pl 19 01 27.9742961064 +39 16 48.224136216           ~ 50 0
14 Kepler-1649c Pl 19 30 00.9006032400 +41 49 49.518349032           ~ 21 0
15 KOI-2418.01 Pl 19 49 56.8076265768 +46 59 48.103495728           ~ 54 0
16 Kepler-186f Pl 19 54 36.6535147488 +43 57 18.025920324           ~ 94 0
17 NAME LP 759-72e Pl 22 18 29.2548547872 -09 36 44.381088036           ~ 22 0
18 TRAPPIST-1d Pl 23 06 29.3684948589 -05 02 29.037301866           ~ 263 0
19 TRAPPIST-1 LM* 23 06 29.3684948589 -05 02 29.037301866     18.798 16.466 14.024 M7.5e 1306 0

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