Detection of new eruptions in the Magellanic Clouds luminous blue variables R 40 and R 110

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Table 6

Bolometric magnitude (M_Bol), effective radius (R∕R_⊙), and log g for R 40 in different epochs, based on the V magnitude and bolometric corrections (BC) from Humphreys & McElroy (1984).

Year	V	Sp-type	BC	M_Bol	R∕R_⊙	log g
1960 (Q)	10.73	B8Ie	− 0.51	− 9.0 ± 0.1	160	1.25
1991 (E)	10.15	A4	− 0.1	− 9.2 ± 0.1	280	0.78
2005 (Q∕E)	10.3	A0–A2	− 0.2	− 9.1 ± 0.1	250	0.85
2016 (E)	9.2	F8Iab	0.08	− 9.8 ± 0.1	750	− 0.1

Notes. We assumed A_V = 0.3 ± 0.1 mag for R 40 and a distance modulus of DM_SMC = 18.90 mag for SMC. In the Year column, Q means the quiescence and E the eruptionstage.

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