ExoplaNeT accRetion mOnitoring sPectroscopic surveY (ENTROPY) - I. Evidence for magnetospheric accretion in the young isolated planetary-mass object 2MASS J11151597+1937266

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Volume 691 (November 2024)

A&A, 691 (2024) A64

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Table 2

Integrated fluxes, luminosities, and mass accretion rates for the H I lines detected in the 2M1115 UVES spectrum.

Line	Order, arm	F_line/10⁻¹⁵	log(L_line)	log(L_acc)^(b)		log(Ṁ_acc)
Line	Order, arm	F_line/10⁻¹⁵	log(L_line)
		(erg s⁻¹ cm⁻²)	(L_⊙)	(L_⊙)		(M_⊙)
				A21	A117	A21	A117
Hα (H3)	12, RedU^(a)	${8.43}_{- 1.30}^{+ 1.61}$ $8.43_{ - 1.30}^{ + 1.61}$	−6.27 ± 0.09	−4.35 ± 0.14	−5.35 ± 0.38	−7.67 ± 0.32	−8.67 ± 0.48
Hβ (H4)	2, RedL^(a)	${0.96}_{- 0.49}^{+ 3.02}$ $0.96_{ - 0.49}^{ + 3.02}$	−7.21 ± 0.45	−4.80 ± 0.41	−5.63 ± 0.61	−8.12 ± 0.50	−8.95 ± 0.67
Hγ (H5)	34–35 ^(c), Blue	${0.38}_{- 0.28}^{+ 2.00}$ $0.38_{ - 0.28}^{ + 2.00}$	−7.61 ± 0.46	−4.87 ± 0.42	−5.76 ± 0.62	−8.19 ± 0.51	−9.08 ± 0.68
Hδ (H6)	28, Blue	${1.10}_{- 0.53}^{+ 3.63}$ $1.10_{ - 0.53}^{ + 3.63}$	−7.15 ± 0.45	−4.24 ± 0.41	−5.01 ± 0.59	−7.56 ± 0.50	−8.33 ± 0.66
Hϵ (H7)	25, Blue	${0.35}_{- 0.26}^{+ 4.30}$ $0.35_{ - 0.26}^{ + 4.30}$	−7.65 ± 0.48	−4.44 ± 0.43	−5.42 ± 0.62	−7.76 ± 0.52	−8.74± 0.68

Notes. ^(a)RedU and RedL refer to the upper and lower detectors of the red arm of UVES, respectively. ^(b)L_acc values were estimated from L_line using both planetary scaling relations from Aoyama et al. (2021, A21) for H3-H7, as well as stellar scaling relations from Alcalá et al. (2017, Al17). ^(c)The line flux for Hγ listed here is the average of the fluxes obtained in orders 34 and 35 of the blue arm.

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