Comparative modelling of the spectra of cool giants

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Table 1

Stellar parameters of α Tau (Sect. 2.2) and α Cet (Sect. 2.3) based on published data.

	α Tau	Ref.	α Cet	Ref.
	Star 1		Star 2

Name	Aldebaran		Menkar
HR	1457		911
MK type	K5 III		M1.5 IIIa
T_eff (K)	3930 ± 40	^(a)	3800 ± 60	^(a)
T_eff (K)	3920 ± 130	^(b)	3730 ± 75	⁽ⁱ⁾
L [L_⊙]	440 ± 20	^(c)	1870 ± 130	^(c)
log (g (cm s^-2))	1.2 ± 0.1	^(a)	0.9 ± 0.1	^(a)
log (g (cm s^-2))	1.2 ± 0.5	^(b)	0.7 ± 0.3	⁽ⁱ⁾
M [M_⊙]	1.3 ± 0.3	^(d)	3.0 ± 0.5	^(d)
[Fe/H]	−0.22 ± 0.11	^(e)	+0.02 ± 0.03	⁽ⁱ⁾

V − I	2.17 ± 0.02	^(f)	2.51 ± 0.02	^(f)
J − K	0.97 ± 0.03	^(f)	1.08 ± 0.03	^(f)
V − K	3.67 ± 0.03	^(f)	4.21 ± 0.03	^(f)
v_rad [km s^-1]	54.26 ± 0.03	^(g)	−26.08 ± 0.02	^(g)
v sin i [km s^-1]	5 ± 1	^(h)	3 ± 2	^(j)

Notes.

^(a)

Direct parameters (see text);

^(b)

mean of parameters used for spectroscopic [Fe/H] (see Table 3);

^(c)

from bolometric flux and parallax (see text);

^(d)

from T_eff and L, and evolutionary tracks (see text);

^(e)

see Table 3;

^(f)

Johnson et al. (1966);

^(g)

heliocentric radial velocity from Famaey et al. (2005);

^(h)

Hekker & Meléndez (2007);

⁽ⁱ⁾

Meléndez et al. (2008);

^(j)

Zamanov et al. (2008).

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