X-Shooting ULLYSES: Massive Stars at low metallicity - IX. Empirical constraints on mass-loss rates and clumping parameters for OB supergiants in the Large Magellanic Cloud

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Volume 692 (December 2024)

A&A, 692 (2024) A91

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Table 2.

Best fit photospheric parameters of the sample stars.

Object	SpT	T_eff [K]	g_eff [log₁₀ (cm/s²)]	y_He[n_He/n_H]	v_max, vsini [km/s]	C [dex]	N [dex]	O [dex]
Sk−67 ° 195	B6 I	$14 200_{- 500}^{+ 900}$ $14\,200_{-500}^{+900}$	$2 . 45_{- 0.2}^{+ 0.2}$ $2.45_{-0.2}^{+0.2}$	$0 . 04_{- 0.02}^{+ 0.05}$ $0.04_{-0.02}^{+0.05}$	$40_{- 25}^{+ 25}$ $40_{-25}^{+25}$	$7 . 1_{- 0.4}^{+ 1.0}$ $7.1_{-0.4}^{+1.0}$	$6 . 2_{- 0.35}^{+ 1.75}$ $6.2_{-0.35}^{+1.75}$	$8 . 05_{- 0.75}^{+ 1.05}$ $8.05_{-0.75}^{+1.05}$
Sk−68 ° 8	B5 Ia⁺	$17 000_{- 1750}^{+ 250}$ $17\,000_{-1750}^{+250}$	$2 . 15_{- 0.25}^{+ 0.05}$ $2.15_{-0.25}^{+0.05}$	$0 . 05_{- 0.03}^{+ 0.08}$ $0.05_{-0.03}^{+0.08}$	$59_{- 13}^{+ 16}$ $59_{-13}^{+16}$	$7 . 35_{- 0.4}^{+ 1.1}$ $7.35_{-0.4}^{+1.1}$	$7 . 85_{- 1.0}^{+ 0.1}$ $7.85_{-1.0}^{+0.1}$	$8 . 45_{- 0.6}^{+ 0.95}$ $8.45_{-0.6}^{+0.95}$
RMC-109	B5 Ia	$17 250_{- 1500}^{+ 2750}$ $17\,250_{-1500}^{+2750}$	$2 . 45_{- 0.35}^{+ 0.4}$ $2.45_{-0.35}^{+0.4}$	$0 . 05_{- 0.0}^{+ 0.08}$ $0.05_{-0.0}^{+0.08}$	$51_{- 9}^{+ 18}$ $51_{-9}^{+18}$	$8 . 5_{- 0.2}^{+ 0.25}$ $8.5_{-0.2}^{+0.25}$	$6 . 35_{- 0.5}^{+ 0.6}$ $6.35_{-0.5}^{+0.6}$	$7 . 6_{- 0.25}^{+ 0.4}$ $7.6_{-0.25}^{+0.4}$
Sk−67 ° 78	B3 Ia	$19 250_{- 1500}^{+ 1250}$ $19\,250_{-1500}^{+1250}$	$2 . 35_{- 0.1}^{+ 0.2}$ $2.35_{-0.1}^{+0.2}$	$0 . 08_{- 0.02}^{+ 0.03}$ $0.08_{-0.02}^{+0.03}$	$56_{- 2}^{+ 14}$ $56_{-2}^{+14}$	$7 . 2_{- 0.5}^{+ 0.6}$ $7.2_{-0.5}^{+0.6}$	$7 . 85_{- 1.05}^{+ 0.15}$ $7.85_{-1.05}^{+0.15}$	$8 . 9_{- 1.4}^{+ 0.2}$ $8.9_{-1.4}^{+0.2}$
Sk−70 ° 50	B3 Ia	$18 700_{- 2900}^{+ 600}$ $18\,700_{-2900}^{+600}$	$2 . 3_{- 0.35}^{+ 0.2}$ $2.3_{-0.35}^{+0.2}$	$0 . 08_{- 0.02}^{+ 0.01}$ $0.08_{-0.02}^{+0.01}$	$50_{- 10}^{+ 25}$ $50_{-10}^{+25}$	$7 . 85_{- 0.05}^{+ 0.5}$ $7.85_{-0.05}^{+0.5}$	$7 . 3_{- 1.1}^{+ 0.8}$ $7.3_{-1.1}^{+0.8}$	$7 . 9_{- 0.2}^{+ 0.7}$ $7.9_{-0.2}^{+0.7}$
Sk−68 ° 26	B2 Ia	$19 250_{- 250}^{+ 1500}$ $19\,250_{-250}^{+1500}$	$2 . 2_{- 0.05}^{+ 0.2}$ $2.2_{-0.05}^{+0.2}$	$0 . 16_{- 0.05}^{+ 0.01}$ $0.16_{-0.05}^{+0.01}$	$65_{- 11}^{+ 5}$ $65_{-11}^{+5}$	$8 . 45_{- 0.55}^{+ 0.25}$ $8.45_{-0.55}^{+0.25}$	$7 . 4_{- 0.35}^{+ 0.05}$ $7.4_{-0.35}^{+0.05}$	$8 . 3_{- 0.05}^{+ 0.55}$ $8.3_{-0.05}^{+0.55}$
Sk−70 ° 16	B2 II	$20 900_{- 700}^{+ 2600}$ $20\,900_{-700}^{+2600}$	$2 . 85_{- 0.2}^{+ 0.25}$ $2.85_{-0.2}^{+0.25}$	$0 . 1_{- 0.05}^{+ 0.04}$ $0.1_{-0.05}^{+0.04}$	$65_{- 20}^{+ 10}$ $65_{-20}^{+10}$	$8 . 2_{- 0.25}^{+ 0.15}$ $8.2_{-0.25}^{+0.15}$	$8 . 35_{- 0.55}^{+ 0.5}$ $8.35_{-0.55}^{+0.5}$	$8 . 82_{- 1.02}^{+ 0.03}$ $8.82_{-1.02}^{+0.03}$
Sk−69 ° 52	B2 Ia	$22 500_{- 1750}^{+ 250}$ $22\,500_{-1750}^{+250}$	$2 . 6_{- 0.1}^{+ 0.05}$ $2.6_{-0.1}^{+0.05}$	$0 . 26_{- 0.09}^{+ 0.01}$ $0.26_{-0.09}^{+0.01}$	$71_{- 1}^{+ 14}$ $71_{-1}^{+14}$	$8 . 35_{- 0.1}^{+ 0.05}$ $8.35_{-0.1}^{+0.05}$	$7 . 55_{- 0.05}^{+ 0.35}$ $7.55_{-0.05}^{+0.35}$	$8 . 45_{- 0.2}^{+ 0.05}$ $8.45_{-0.2}^{+0.05}$
Sk−67 ° 14	B1 Ia	$23 250_{- 750}^{+ 1500}$ $23\,250_{-750}^{+1500}$	$2 . 55_{- 0.05}^{+ 0.35}$ $2.55_{-0.05}^{+0.35}$	$0 . 16_{- 0.12}^{+ 0.04}$ $0.16_{-0.12}^{+0.04}$	$67_{- 10}^{+ 11}$ $67_{-10}^{+11}$	$8 . 4_{- 0.8}^{+ 0.05}$ $8.4_{-0.8}^{+0.05}$	$7 . 15_{- 0.05}^{+ 1.5}$ $7.15_{-0.05}^{+1.5}$	$8 . 7_{- 0.45}^{+ 0.05}$ $8.7_{-0.45}^{+0.05}$
Sk−69 ° 140	B1 Ib	$25 750_{- 4500}^{+ 250}$ $25\,750_{-4500}^{+250}$	$3 . 05_{- 0.4}^{+ 0.15}$ $3.05_{-0.4}^{+0.15}$	$0 . 11_{- 0.02}^{+ 0.06}$ $0.11_{-0.02}^{+0.06}$	$68_{- 5}^{+ 42}$ $68_{-5}^{+42}$	$8 . 45_{- 0.3}^{+ 0.35}$ $8.45_{-0.3}^{+0.35}$	$6 . 1_{- 0.2}^{+ 1.45}$ $6.1_{-0.2}^{+1.45}$	$7 . 8_{- 0.25}^{+ 1.3}$ $7.8_{-0.25}^{+1.3}$
Sk−66 ° 35	BC1 Iab	$23 750_{- 1750}^{+ 1500}$ $23\,750_{-1750}^{+1500}$	$2 . 75_{- 0.1}^{+ 0.55}$ $2.75_{-0.1}^{+0.55}$	$0 . 18_{- 0.08}^{+ 0.01}$ $0.18_{-0.08}^{+0.01}$	$70_{- 15}^{+ 18}$ $70_{-15}^{+18}$	$8 . 4_{- 0.4}^{+ 0.35}$ $8.4_{-0.4}^{+0.35}$	$7 . 45_{- 1.15}^{+ 0.4}$ $7.45_{-1.15}^{+0.4}$	$8 . 5_{- 0.4}^{+ 0.5}$ $8.5_{-0.4}^{+0.5}$
Sk−69 ° 43	B0.7 Ia	$25 000_{- 2000}^{+ 750}$ $25\,000_{-2000}^{+750}$	$2 . 85_{- 0.25}^{+ 0.05}$ $2.85_{-0.25}^{+0.05}$	$0 . 14_{- 0.02}^{+ 0.09}$ $0.14_{-0.02}^{+0.09}$	$71_{- 13}^{+ 17}$ $71_{-13}^{+17}$	$7 . 95_{- 0.25}^{+ 0.15}$ $7.95_{-0.25}^{+0.15}$	$7 . 35_{- 0.2}^{+ 0.6}$ $7.35_{-0.2}^{+0.6}$	$9 . 25_{- 0.9}^{+ 0.15}$ $9.25_{-0.9}^{+0.15}$
Sk−68 ° 41	B0.7 Ia	$26 200_{- 1000}^{+ 200}$ $26\,200_{-1000}^{+200}$	$2 . 8_{- 0.15}^{+ 0.2}$ $2.8_{-0.15}^{+0.2}$	$0 . 16_{- 0.04}^{+ 0.01}$ $0.16_{-0.04}^{+0.01}$	$90_{- 5}^{+ 15}$ $90_{-5}^{+15}$	$8 . 35_{- 0.05}^{+ 0.25}$ $8.35_{-0.05}^{+0.25}$	$7 . 6_{- 0.05}^{+ 0.65}$ $7.6_{-0.05}^{+0.65}$	$9 . 25_{- 0.5}^{+ 0.05}$ $9.25_{-0.5}^{+0.05}$
Sk−68 ° 52	B0 Ia	$28 250_{- 750}^{+ 750}$ $28\,250_{-750}^{+750}$	$3 . 1_{- 0.1}^{+ 0.25}$ $3.1_{-0.1}^{+0.25}$	$0 . 13_{- 0.03}^{+ 0.02}$ $0.13_{-0.03}^{+0.02}$	$82_{- 5}^{+ 10}$ $82_{-5}^{+10}$	$8 . 55_{- 0.1}^{+ 0.15}$ $8.55_{-0.1}^{+0.15}$	$7 . 5_{- 1.05}^{+ 0.2}$ $7.5_{-1.05}^{+0.2}$	$7 . 75_{- 0.4}^{+ 0.05}$ $7.75_{-0.4}^{+0.05}$
Sk−68 ° 155	O9 Ia	$32 000_{- 1250}^{+ 1250}$ $32\,000_{-1250}^{+1250}$	$3 . 2_{- 0.25}^{+ 0.2}$ $3.2_{-0.25}^{+0.2}$	$0 . 12_{- 0.02}^{+ 0.03}$ $0.12_{-0.02}^{+0.03}$	$165_{- 20}^{+ 10}$ $165_{-20}^{+10}$	$7 . 1_{- 0.05}^{+ 1.05}$ $7.1_{-0.05}^{+1.05}$	$7 . 15_{- 0.05}^{+ 0.7}$ $7.15_{-0.05}^{+0.7}$	$8 . 25_{- 0.05}^{+ 0.65}$ $8.25_{-0.05}^{+0.65}$
Sk−67 ° 107	O8.5 II	$32 750_{- 1000}^{+ 1500}$ $32\,750_{-1000}^{+1500}$	$3 . 35_{- 0.25}^{+ 0.15}$ $3.35_{-0.25}^{+0.15}$	$0 . 08_{- 0.01}^{+ 0.06}$ $0.08_{-0.01}^{+0.06}$	$93_{- 4}^{+ 6}$ $93_{-4}^{+6}$	$8 . 05_{- 0.1}^{+ 0.25}$ $8.05_{-0.1}^{+0.25}$	$6 . 55_{- 0.4}^{+ 0.1}$ $6.55_{-0.4}^{+0.1}$	$7 . 6_{- 0.25}^{+ 1.05}$ $7.6_{-0.25}^{+1.05}$
Sk−67 ° 106	O8 II	$32 700_{- 600}^{+ 1600}$ $32\,700_{-600}^{+1600}$	$3 . 5_{- 0.15}^{+ 0.5}$ $3.5_{-0.15}^{+0.5}$	$0 . 11_{- 0.03}^{+ 0.01}$ $0.11_{-0.03}^{+0.01}$	$122_{- 16}^{+ 1}$ $122_{-16}^{+1}$	$7 . 7_{- 0.45}^{+ 0.2}$ $7.7_{-0.45}^{+0.2}$	$6 . 25_{- 0.1}^{+ 0.7}$ $6.25_{-0.1}^{+0.7}$	$7 . 75_{- 0.05}^{+ 0.45}$ $7.75_{-0.05}^{+0.45}$

Notes. For y_He and v_max, vsini we show the errors of the optical only fits, as their fit range has been constrained for the full UV and optical fit.

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