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Table 2

Photometry and FIR/flux densities of α Centauri.

λ eff α Cen A α Cen B Photometry
(μm) Sν (Jy) Sν (Jy) & reference

0.440 2215 ± 41 536 ± 10 B (1)
0.550 3640 ± 67 1050 ± 19 V (1)
0.790 4814 ± 89 1654 ± 30 I (1)
0.440 2356 ± 43 572 ± 10 B (2)
0.550 3606 ± 66 1059 ± 20 V (2)
0.640 4259 ± 78 1387 ± 26 Rc (2)
0.790 4784 ± 88 1666 ± 31 Ic (2)
1.215 4658 ± 86 1645 ± 30 J (3)
1.654 3744 ± 69 1649 ± 31 H (3)
2.179 2561 ± 47 1139 ± 21 K (3)
3.547 1194 ± 22 521 ± 10 L (3)
4.769 592 ± 11 258 ± 5 M (3)
24 30.84 ± 0.76 13.63 ± 0.33 MIPS (4)
70 3.35 ± 0.28 1.49 ± 0.28 PACS (5)
100 1.41 ± 0.05 0.67 ± 0.037 PACS (6)
160 0.56 ± 0.06 0.21 ± 0.06 * PACS (5), (6)
250 0.24 ± 0.05 0.11 ± 0.05 *SPIRE (5)
350 0.145 ± 0.028 0.064 ± 0.028 *SPIRE (5)
500 0.08 ± 0.03 0.04 ± 0.03 *SPIRE (5)
870 0.028 ± 0.007 0.012 ± 0.007 *LABOCA (7)

Notes.

(*)

Asterisks indicate values determined using Sν, A/Sν, B = 2.25 (see Liseau et al. 2013).

Reference. (1) Hipparcos. (2) Bessell (1990). (3) Engels et al. (1981). (4) A. Mora (priv. comm.; FWHM(24 μm) = 6′′). Binary separation on 9 April 2005, 104 (5) Hi-GAL: KPOT_smolinar_1, fields 314_0 & 316_0. Herschel-beams FWHM(70 μm) = 56, (100 μm) = 68, (160 μm) = 113, (250 μm) = 176, (350 μm) = 239, (500 μm) = 352. Binary separation on 21 August 2010, 63. (6) DUNES: KPOT_ceiroa_1. Binary separation 29 July 2011, 57. (7) 384.C-1025, 380.C-3044(A): FWHM(870 μm) = 195. Binary separation 2013 November 2007, 88 and 19 September 2009, 70.

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