Comparative study of small-scale magnetic fields on ξ Boo A using optical and near-infrared spectroscopy

Open Access

Table C.1

Results of the magnetic inference for the observations in different wavelength bands and at different epochs.

	Optical
Instrument	Year	f₁	f₂	ɛ_Fe	υ_mac (km s⁻¹)	〈B〉 (kG)
ESPaDOnS	2005.50	${0.47}_{- 0.20}^{+ 0.14}$ $0.47_{ - 0.20}^{ + 0.14}$	${0.069}_{- 0.049}^{+ 0.077}$ $0.069_{ - 0.049}^{ + 0.077}$	−4.684(8)	3.65(16)	0.606(63)
NARVAL	2007.59	${0.51}_{- 0.23}^{+ 0.18}$ $0.51_{ - 0.23}^{ + 0.18}$	${0.106}_{- 0.068}^{+ 0.087}$ $0.106_{ - 0.068}^{ + 0.087}$	−4.678(7)	3.79(15)	0.716(66)
NARVAL	2008.08	0.37(20)	0.112(77)	−4.683(7)	3.59(15)	0.591(60)
NARVAL	2009.46	${0.47}_{- 0.19}^{+ 0.12}$ $0.47_{ - 0.19}^{ + 0.12}$	${0.063}_{- 0.045}^{+ 0.074}$ $0.063_{ - 0.045}^{ + 0.074}$	−4.685(7)	3.42(16)	0.595(59)
NARVAL	2010.07	${0.42}_{- 0.15}^{+ 0.09}$ $0.42_{ - 0.15}^{ + 0.09}$	${0.045}_{- 0.033}^{+ 0.057}$ $0.045_{ - 0.033}^{ + 0.057}$	−4.694(6)	${3.48}_{- 0.15}^{+ 0.13}$ $3.48_{ - 0.15}^{ + 0.13}$	0.511(52)
NARVAL	2012.07	0.36(20)	0.126(77)	−4.684(8)	3.56(16)	${0.605}_{- 0.060}^{+ 0.067}$ $0.605_{ - 0.060}^{ + 0.067}$
NARVAL	2013.33	${0.51}_{- 0.19}^{+ 0.13}$ $0.51_{ - 0.19}^{ + 0.13}$	${0.064}_{- 0.045}^{+ 0.074}$ $0.064_{ - 0.045}^{ + 0.074}$	−4.683(8)	3.54(16)	0.635(63)
NARVAL	2015.29	${0.55}_{- 0.21}^{+ 0.13}$ $0.55_{ - 0.21}^{ + 0.13}$	${0.065}_{- 0.047}^{+ 0.077}$ $0.065_{ - 0.047}^{ + 0.077}$	−4.689(8)	3.67(17)	${0.679}_{- 0.069}^{+ 0.061}$ $0.679_{ - 0.069}^{ + 0.061}$
NARVAL+ESPaDOnS	2005-2015	${0.49}_{- 0.20}^{+ 0.13}$ $0.49_{ - 0.20}^{ + 0.13}$	${0.070}_{- 0.050}^{+ 0.075}$ $0.070_{ - 0.050}^{ + 0.075}$	−4.685(7)	3.61(15)	${0.626}_{- 0.061}^{+ 0.055}$ $0.626_{ - 0.061}^{ + 0.055}$
UVES	2017.42	${0.51}_{- 0.17}^{+ 0.15}$ $0.51_{ - 0.17}^{ + 0.15}$	${0.092}_{- 0.056}^{+ 0.068}$ $0.092_{ - 0.056}^{ + 0.068}$	−4.665(6)	2.69(14)	${0.694}_{- 0.052}^{+ 0.047}$ $0.694_{ - 0.052}^{ + 0.047}$

	H-band
Instrument	Year		f₁	f₂	ɛ_Fe	υ_mac (km s⁻¹)	〈B〉 (kG)

CRIRES⁺	2023.397		0.121(19)	0.159(7)	−4.581(2)	3.15(21)	0.439(18)
CRIRES⁺	2024.271		0.103(21)	0.132(8)	−4.573(2)	3.18(21)	0.366(19)

	K-band
Instrument	Year	Element	f₁	f₂	ɛ_Fe	υ_mac (km s⁻¹)	〈B〉 (kG)

CRIRES⁺	2023.397	Ti I	${0.041}_{- 0.029}^{+ 0.053}$ $0.041_{ - 0.029}^{ + 0.053}$	${0.258}_{- 0.034}^{+ 0.029}$ $0.258_{ - 0.034}^{ + 0.029}$	−7.082(8)	${2.20}_{- 1.00}^{+ 0.89}$ $2.20_{ - 1.00}^{ + 0.89}$	${0.569}_{- 0.067}^{+ 0.052}$ $0.569_{ - 0.067}^{ + 0.052}$
		Fe I	${0.015}_{- 0.011}^{+ 0.023}$ $0.015_{ - 0.011}^{ + 0.023}$	${0.287}_{- 0.013}^{+ 0.011}$ $0.287_{ - 0.013}^{ + 0.011}$	−4.588(4)	${0.99}_{- 0.42}^{+ 0.56}$ $0.99_{ - 0.42}^{ + 0.56}$	${0.596}_{- 0.024}^{+ 0.021}$ $0.596_{ - 0.024}^{ + 0.021}$
CRIRES⁺	2024.271	Ti i	${0.069}_{- 0.047}^{+ 0.065}$ $0.069_{ - 0.047}^{ + 0.065}$	${0.185}_{- 0.035}^{+ 0.030}$ $0.185_{ - 0.035}^{ + 0.030}$	−7.106(8)	${1.93}_{- 0.91}^{+ 0.86}$ $1.93_{ - 0.91}^{ + 0.86}$	${0.450}_{- 0.066}^{+ 0.051}$ $0.450_{ - 0.066}^{ + 0.051}$
		Fe I	${0.052}_{- 0.037}^{+ 0.054}$ $0.052_{ - 0.037}^{ + 0.054}$	${0.256}_{- 0.022}^{+ 0.018}$ $0.256_{ - 0.022}^{ + 0.018}$	−4.598(5)	${1.04}_{- 0.45}^{+ 0.65}$ $1.04_{ - 0.45}^{ + 0.65}$	0.572(33)
CRIRES⁺	2024.274	Ti I	${0.059}_{- 0.041}^{+ 0.062}$ $0.059_{ - 0.041}^{ + 0.062}$	${0.266}_{- 0.037}^{+ 0.031}$ $0.266_{ - 0.037}^{ + 0.031}$	−7.078(8)	${2.62}_{- 1.02}^{+ 0.88}$ $2.62_{ - 1.02}^{ + 0.88}$	${0.602}_{- 0.074}^{+ 0.061}$ $0.602_{ - 0.074}^{ + 0.061}$
		Fe I	${0.015}_{- 0.011}^{+ 0.022}$ $0.015_{ - 0.011}^{ + 0.022}$	${0.297}_{- 0.013}^{+ 0.010}$ $0.297_{ - 0.013}^{ + 0.010}$	−4.585(4)	${1.01}_{- 0.43}^{+ 0.55}$ $1.01_{ - 0.43}^{ + 0.55}$	${0.613}_{- 0.023}^{+ 0.019}$ $0.613_{ - 0.023}^{ + 0.019}$

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