The average X-ray spectrum of the volume-complete M-, F-, G-, and K-type star sample within 10 pc of the Sun

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Table 6

Model parameters and values for F-, G-, and K-dwarf-averaged spectra.

Param.	APEC	VAPEC	2T-APEC	2T-VAPEC	3T-APEC	3T-VAPEC		APEC+GAUSS
kT₁	0.56 ± 0.01	${0.42}_{- 0.01}^{+ 0.02}$ $Mathematical equation: ${0.42^{+0.02}_{-0.01}}$$	0.31 (± 0.02, ±0.02)	$0.22 (\pm 0.01,_{- 0.01}^{+ 0.02})$ $Mathematical equation: ${0.22 (\pm0.01, {}^{+0.02}_{-0.01})}$$	{0.09 (±0.01,±0.01)}	0.23 (±0.01,±0.01)	kT₁	0.51±0.01
N₁	17.0 ± 0.7	24 ± 2	$8.0 (\pm 0.9,_{- 0.1}^{+ 2.6})$ $Mathematical equation: ${8.0 (\pm0.9,{}^{+2.6}_{-0.1})}$$	10 (± 2, ±2)	$10 (_{- 3}^{+ 5},_{- 3}^{+ 1})$ $Mathematical equation: ${10 ({}^{+5}_{-3},{}^{+1}_{-3})}$$	$9 (\pm 3,_{- 2}^{+ 3})$ $Mathematical equation: $9 {(\pm3, {}^{+3}_{-2})}$$	N₁	17.4±0.9
Z or A_Rest	{0.14} ± 0.01	{0.14 ± 0.04}	$0.31 (\pm 0.04,_{- 0.02}^{+ 0.06})$ $Mathematical equation: ${0.31 (\pm 0.04, {}^{+0.06}_{-0.02})}$$	$0.3 (_{- 0.1}^{+ 0.2},_{- 0.1}^{+ 0.2})$ $Mathematical equation: $0.3 {({}^{+0.2}_{-0.1}, ^{+0.2}_{-0.1})}$$	$0.55 (_{- 0.09}^{+ 0.13},_{- 0.06}^{+ 0.18})$ $Mathematical equation: ${0.55 ({}^{+0.13}_{-0.09},{}^{+0.18}_{-0.06})}$$	$0.4 (_{- 0.2}^{+ 0.4},_{- 0.1}^{+ 0.4})$ $Mathematical equation: ${0.4 ({}^{+0.4}_{-0.2}, {}^{+0.4}_{-0.1})}$$	Z	0.13 ± 0.01
kT₂			$0.75 (\pm 0.03,_{- 0.01}^{+ 0.05})$ $Mathematical equation: $0.75 (\pm 0.03, {{}^{+0.05}_{-0.01}})$$	{0.60 (±0.02, ±0.02)}	0.35 (± 0.02, {±0.01})	$0.59 (_{- 0.07}^{+ 0.06},_{- 0.09}^{+ 0.04})$ $Mathematical equation: ${0.59 ({}^{+0.06}_{-0.07},{}^{+0.04}_{-0.09})}$$	E_G1	0.57 ± 0.01
N₂			$5.5 (_{- 0.7}^{+ 0.8},_{- 0.1}^{+ 1.0})$ $Mathematical equation: ${5.5 ({}^{+0.8}_{-0.7},{}^{+1.0}_{-0.1})}$$	$8 (\pm 2,_{- 1}^{+ 4})$ $Mathematical equation: ${8 (\pm 2, {}^{+4}_{-1})}$$	$4.6 (\pm 0.8,_{- 0.1}^{+ 1.8})$ $Mathematical equation: ${4.6 (\pm0.8, {}^{+1.8}_{-0.1})}$$	$5 (_{- 2}^{+ 3},_{- 2}^{+ 3})$ $Mathematical equation: $5 {(^{+3}_{-2}, {}^{+3}_{-2})}$$	N_G1	0.11 ± 0.07
kT₃					$0.79 (\pm 0.03,_{- 0.01}^{+ 0.04})$ $Mathematical equation: $0.79 (\pm 0.03, {{}^{+0.04}_{-0.01})}$$	$1.0 (_{- 0.2}^{+ 0.1},_{- 0.3}^{+ 0.1})$ $Mathematical equation: ${1.0 ({}^{+0.1}_{-0.2}, {}^{+0.1}_{-0.3})}$$	E_G2	0.65 (fixed)
N₃					$3.1 (\pm 0.6,_{- 0.3}^{+ 0.9})$ $Mathematical equation: ${3.1 (\pm 0.6, {}^{+0.9}_{-0.3})}$$	$1.5 (_{- 0.9}^{+ 1.5},_{- 0.8}^{+ 2.5})$ $Mathematical equation: ${1.5 ({}^{+1.5}_{-0.9},{}^{+2.5}_{-0.8})}$$	N_G2	0.02 ± 0.02
A_O		0.06 ± 0.03		$0.14 (_{- 0.04}^{+ 0.06},_{- 0.02}^{+ 0.08})$ $Mathematical equation: ${0.14 ({}^{+0.06}_{-0.04},{}^{+0.08}_{-0.02})}$$		$0.19 (_{- 0.07}^{+ 0.14},_{- 0.06}^{+ 0.15})$ $Mathematical equation: ${0.19 ({}_{-0.07}^{+0.14}, {}^{+0.15}_{-0.06})}$$	E_G3	${0.915}_{- 0.007}^{+ 0.009}$ $Mathematical equation: ${0.915^{+0.009}_{-0.007}}$$
A_Ne		${0.44}_{- 0.05}^{+ 0.06}$ $Mathematical equation: ${0.44^{+0.06}_{-0.05}}$$		$0.8 (_{- 0.2}^{+ 0.3},_{- 0.1}^{+ 0.4})$ $Mathematical equation: ${0.8 ({}^{+0.3}_{-0.2}, {}^{+0.4}_{-0.1})}$$		$0.7 (_{- 0.3}^{+ 0.4},_{- 0.2}^{+ 0.5})$ $Mathematical equation: ${0.7 ({}^{+0.4}_{-0.3}, {}^{+0.5}_{-0.2})}$$	N_G3	0.35 ± 0.05
A_Si		${0.22}_{- 0.08}^{+ 0.09}$ $Mathematical equation: ${0.22^{+0.09}_{-0.08}}$$		$0.18 (_{- 0.09}^{+ 0.12},_{- 0.18}^{+ 0.01})$ $Mathematical equation: ${0.18 ({}^{+0.12}_{-0.09}, {}^{+0.01}_{-0.18})}$$		$0.2 (_{- 0.1}^{+ 0.2},_{- 0.2}^{+ 0.1})$ $Mathematical equation: ${0.2 ({}^{+0.2}_{-0.1}, {}^{+0.1}_{-0.2})}$$	E_G4	1.01 ± 0.01
A_Fe		${0.12}_{- 0.01}^{+ 0.02}$ $Mathematical equation: $0.12^{+0.02}_{-0.01}$$		$0.27 (_{- 0.06}^{+ 0.09},_{- 0.06}^{+ 0.08})$ $Mathematical equation: ${0.27 ({}^{+0.09}_{-0.06}, {}^{+0.08}_{-0.06})}$$		$0.4 (_{- 0.1}^{+ 0.3},_{- 0.1}^{+ 0.3})$ $Mathematical equation: ${0.4 ({}^{+0.3}_{-0.1}, {}^{+0.3}_{-0.1})}$$	N_G4	0.14 ± 0.03

$χ_{ν}^{2} (\frac{χ^{2}}{d . o . f .})$ $Mathematical equation: $\chi_{\nu}^2\ (\frac{\chi^2}{\mathrm{d.o.f.}})$$	$2.58 (\frac{574.48}{223})$ $Mathematical equation: ${2.58 (\frac{574.48}{223})}$$	$1.94 (\frac{424.11}{219})$ $Mathematical equation: $1.94 (\frac{424.11}{219})$$	$1.58 (\frac{349.13}{221})$ $Mathematical equation: ${1.58 (\frac{349.13}{221})}$$	$1.08 (\frac{235.16}{217})$ $Mathematical equation: ${1.08 (\frac{235.16}{217})}$$	$1.15 (\frac{252.77}{219})$ $Mathematical equation: ${1.15 (\frac{252.77}{219})}$$	$1.07 (\frac{229.39}{215})$ $Mathematical equation: ${1.07 (\frac{229.39}{215})}$$	$χ_{ν}^{2} (\frac{χ^{2}}{d . o . f .})$ $Mathematical equation: $\chi_{\nu}^2\ (\frac{\chi^2}{\mathrm{d.o.f.}})$$	$1.49 (\frac{321.25}{216})$ $Mathematical equation: ${1.49 (\frac{321.25}{216})}$$
AIC	580.48	438.11	359.13	253.16	266.77	251.39	AIC	341.25
BIC	590.74	436.53	376.23	283.94	290.71	289.01	BIC	375.46

Notes. The fit was conducted in a 0.35-2.0 keV energy range. Normalisation, N_apec, is in the unit $10^{- 4} \frac{10^{- 14}}{4 π (10 p c)^{2}} {c m}^{- 5}$ $Mathematical equation: $10^{-4}\frac{{10}^{-14}}{4\pi(10 {\rm pc})^2}~ \mathrm{cm}^{-5}$$ . The set of abundance is bonded for all components of a model. The error reported corresponds to 90% confidence, assuming chi-squared statistics. In 2T-VAPEC, 3T-APEC, and 3T-VAPEC, the second error is the 90% confidence interval from the bootstrap resampling distribution (Appendix E): A_element = $\frac{(n_{Z} / n_{H})_{p l a s m a}}{(n_{Z} / n_{H})_{⊙}}$ $Mathematical equation: $\frac{(n_{Z}/n_{H})_{\rm plasma}}{(n_{Z}/n_{H})_{\odot}}$$ .

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