The CHEOPS view of the climate of WASP-3 b | Astronomy & Astrophysics (A&A)

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Volume 692 (December 2024)

A&A, 692 (2024) A129

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Table 7

Spitzer LC observations of WASP-3.

Parameter	IRAC 1 (2009)	IRAC 2 (2008)	IRAC 2 (2016)	IRAC 4 (2008)
Aperture radius (pixels)	2.00	2.25	2.25	2.75
BLISS model	Yes	Yes	Yes	No
Ramp model	Quadratic	Linear	None	Exponential
δ_ecl (%)	${0.224}_{- 0.013}^{+ 0.014}$ ${0.224_{ - 0.013}^{ + 0.014}}$	${0.295}_{- 0.015}^{+ 0.015}$ ${0.295_{ - 0.015}^{ + 0.015}}$	${0.320}_{- 0.015}^{+ 0.014}$ ${0.320_{ - 0.015}^{ + 0.014}}$	${0.369}_{- 0.051}^{+ 0.049}$ ${0.369_{ - 0.051}^{ + 0.049}}$
T_bright (K)	2361 ± 66	2460 ± 72	2575 ± 67	2390 ± 220
Mid-eclipse epoch^(†)	${0.49995}_{- 0.00031}^{+ 0.00028}$ $0.49995_{ - 0.00031}^{ + 0.00028}$	—	—	—
Eclipse duration^(†) (T₄ − T₁)	${0.0627}_{- 0.0022}^{+ 0.0016}$ $0.0627_{ - 0.0022}^{ + 0.0016}$	—	—	—
Ingress time^(†) (T₂ − T₁)	${0.0082}_{- 0.0015}^{+ 0.0021}$ $0.0082_{ - 0.0015}^{ + 0.0021}$	—	—	—

Notes.^(†) Free parameter shared between all four Spitzer observations. The units are in orbital phase relative to the transit epoch and period from Table 6.

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