Table 1
Summary of the VISIR observations.
No. | Name | Sp. Type | DEC | V helio | t obs | Seeing | Airmass | Int. time | Calibrator | Remarks |
(km s-1) | (UTC) | (′′) | (sec) | |||||||
|
||||||||||
K–M giants | ||||||||||
1 | α Boo | K1.5III | 0.0 | − 5.2 ± 0.3ab | 03:44:15 | 0.72 | 1.49 | 180 | C8 | |
2 | γ Cru | M3.5III | 0.0 | 21.0 ± 0.6ac | 01:53:35 | 1.15 | 1.24 | 180 | C4 | |
3 | σ Lib | M3/M4III | 0.0 | − 3.9 ± 0.6a | 06:24:15 | 0.71 | 1.01 | 180 | C6 | |
4 | V806 Cen | M4.5III | 0.01 | 40.7 ± 0.6a | 02:08:55 | 1.39 | 1.20 | 180 | C4 | |
5 | ε Mus | M5III | −0.01 | 7.1 ± 0.6a | 04:28:15 | 0.90 | 1.42 | 180 | C5 | |
6 | L2 Pup | M5III | 0.60 | 52.1 ± 0.3d | 00:16:55 | 0.88 | 1.20 | 180 | C1 | |
7 | θ Aps | M6.5III | 0.29 | 9.0 ± 0.3d | 02:56:55 | 1.16 | 1.70 | 600 | C4 | |
|
||||||||||
Red supergiants | ||||||||||
8 | α Ori | M2Iab | 0.25 | 19.6 ± 0.2e | 00:00:55 | 0.97 | 1.86 | 180 | C3 | |
9 | α Sco | M1.5Iab-b | 0.06 | − 3.5 ± 5af | 05:19:35 | 0.91 | 1.12 | 180 | C6 | |
10 | α Her | M5Ib-II | −0.04 | − 30.4 ± 5af | 07:36:15 | 0.59 | 1.30 | 180 | C8 | |
11 | VY CMa | M2.5-5Iae | 25 | 45.5 ± 4.5g | 01:10:15 | 0.98 | 1.31 | 180 | C2 | |
12 | VX Sgr | M4Ia-10eIa | 0.73 | − 5.6 ± 1.3g | 06:39:35 | 0.84 | 1.17 | 180 | C6 | |
|
||||||||||
Mira stars | ||||||||||
13 | R Aql | M5-9e | 0.36 | 28.1 ± 0.2h | 07:50:15 | 0.63 | 1.40 | 180 | C8 | phase = 0.18 |
14 | R Hya | M6-9eS | 0.24 | − 11.9 ± 0.2h | 05:49:35 | 0.83 | 1.07 | 180 | C6 | phase = 0.44 |
15 | W Hya | M7.5-9ep | 0.10 | 37.9 ± 0.2h | 02:41:35 | 1.34 | 1.11 | 180 | C5 | phase = 0.00 |
|
||||||||||
Unknown nature | ||||||||||
16 | GCIRS3 | – | – | 07:10:55 | 0.66 | 1.05 | 600 | C7 | ||
|
||||||||||
Calibrators | ||||||||||
C1 | α Car | F0II | – | – | 23:44:15 | 0.99 | 1.30 | 180 | ||
C2 | α CMi | F5IV-V | – | – | 00:32:15 | 0.71 | 1.35 | 540 | ||
C3 | α CMi | F5IV-V | – | – | 01:26:55 | 1.09 | 1.69 | 540 | ||
C4 | α Cen A | G2V | – | – | 02:27:35 | 0.68 | 1.48 | 180 | ||
C5 | α Cen A | G2V | – | – | 03:20:55 | 0.73 | 1.35 | 180 | ||
C6 | α Cen A | G2V | – | – | 05:34:15 | 0.75 | 1.24 | 180 | ||
C7 | α Cen A | G2V | – | – | 06:54:15 | 0.71 | 1.29 | 180 | ||
C8 | α Aql | A7V | – | – | 08:04:55 | 0.66 | 1.48 | 1400 |
Notes. Seeing is in the visible. Int. time = Integration time.
Reference. For the heliocentric systemic velocities:
Gontcharov (2006),
Hatzes & Cochran (1993),
Murdoch et al. (1992),
Kerschbaum & Olofsson (1999),
O’Gorman et al. (2012),
Smith et al. (1989),
Kemper et al. (2003),
Young (1995).
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