Table 1 Best-fitting orbital and instrumental parameters from fitting white light curves

From: A benchmark JWST near-infrared spectrum for the exoplanet WASP-39 b

Parameter

Value

Description

P

\(4.0552842{\pm }_{0.0000035}^{0.0}\)

Orbital period (d)

a/Rs

11.390 ± 0.012

Scaled semimajor axis

b

0.4498 ± 0.0022

Impact parameter

i

87.7369 ± 0.0024

Inclination (deg)

e

0 (fixed)

Eccentricity

ρs

\(1.6999{\pm }_{0.0055}^{0.0054}\)

Stellar density (g cm−3)

T0,NIRSpec/PRISM

\(2,459,771.335647{\pm }_{0.000014}^{0.000013}\)

NIRSpec PRISM mid-transit timea (days, BJD TDB)

T0,NIRCam

\(2,459,783.5015000{\pm }_{0.0000069}^{0.0000068}\)

NIRCam mid-transit timea (days, BJD TDB)

T0,NIRISS

\(2,459,787.5567843{\pm }_{0.0000073}^{0.0000073}\)

NIRISS mid-transit timea (days, BJD TDB)

T0,NIRSpec/G395H

\(2,459,791.6120684{\pm }_{0.0000089}^{0.0000094}\)

NIRSpec G395H mid-transit timea (days, BJD TDB)

σNIRSpec/PRISM

\(218.9{\pm }_{6.8}^{7.0}\)

NIRSpec PRISM photometric jitter (ppm)

σNIRCam/F322W2

\(235.6{\pm }_{10.2}^{10.9}\)

NIRCam F322W2 photometric jitter (ppm)

σNIRCam/F210M

\(75.5{\pm }_{11.1}^{11.3}\)

NIRCam F210M photometric jitter (ppm)

σNIRISS/order 1

\(110.3{\pm }_{3.8}^{3.8}\)

NIRISS/SOSS order 1 photometric jitter (ppm)

σNIRISS/order 2

\(153.2{\pm }_{7.9}^{8.1}\)

NIRISS/SOSS order 2 photometric jitter (ppm)

σNIRSpec/G395H/NRS1

\(138.6{\pm }_{6.0}^{6.5}\)

NIRSpec/G395H NRS1 photometric jitter (ppm)

σNIRSpec/G395H/NRS2

\(147.5{\pm }_{7.0}^{7.6}\)

NIRSpec/G395H NRS2 photometric jitter (ppm)

  1. aA single time of transit was fitted for all datasets; we list the predicted time of transit for each instrument here based on that single fitted parameter.