Dust-corrected surface photometry of M 31 from Spitzer far-infrared observations

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Table 2:

Calculated parameters of the photometrical model.
Population	a₀	q	N	$\kappa$	k	h
	(kpc)
Bulge	$0.50\pm0.01$	$1.06\pm0.03$	$3.46\pm0.11$		$7.2086\times 10^{-4}$	896.897
Disc	$6.7\pm0.2$	$0.08\pm0.01$	$1.90\pm0.13$		$6.4723 \times 10^{-2}$	26.7655
Young disc^a	$9.5\pm0.2$	$0.02\pm0.003$	$0.35\pm0.02$	$0.67\pm0.02$	1.3334	1.23802
Halo	$6.5\pm0.4$	$0.50\pm0.02$	$5.0\pm0.2$		$4.1625 \times 10^{-6}$	31809.6
Dust disc	17.0	0.014	1.0		0.5000	4.00000
Population	L_U	L_B	L_V	L_R	L_I	L_L
	( $10^{10}~L_{\odot}$ )	( $10^{10}~L_{\odot}$ )	( $10^{10}~L_{\odot}$ )	( $10^{10}~L_{\odot}$ )	( $10^{10}~L_{\odot}$ )	( $10^{10}~L_{\odot}$ )
Bulge	$0.63\pm0.07$	$0.82\pm0.04$	( $0.96\pm0.05$ )	( $0.93\pm0.04$ )	$0.83\pm0.09$	$4.08\pm0.22$
Disc	$0.61\pm0.07$	$0.90\pm0.06$	$1.36\pm0.07$	$1.47\pm0.13$	( $1.88\pm0.27$ )	$5.40\pm0.52$
Young disc^b	$0.98\pm0.11$	$1.10\pm0.08$	$0.85\pm0.08$	$0.83\pm0.13$	( $1.19\pm0.21$ )	$1.09\pm0.58$
Halo	( $0.79\pm0.19$ )	( $0.82\pm0.11$ )	$0.23\pm0.02$	( $1.70\pm0.28$ )	$0.72\pm0.06$	( $2.32\pm0.95$ )

Notes. The luminosities are corrected for the intrinsic absorption and the absorption in the Milky Way. The luminosities supported by insufficient data are given in brackets. ^(a) Structural parameters for the young disc are only given for the positive component; see Sect. 2.1 for determining the parameters of the negative component. ^(b) The luminosities of the young disc are its true luminosities ( L=L₊+L_-).

Source LaTeX | All tables | In the text

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