Parameters of Herbig Ae/Be and Vega-type stars | Astronomy & Astrophysics (A&A)

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Volume 495 / No 3 (March I 2009)

A&A, 495 3 (2009) 901-917

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Table 4:

Some stellar parameters for HR 26, HR 4757 and HR 5422.
Star	$T_{\rm eff}$ (K)	$\log g_*$	Age (Myr)	Tracks
HR 26 A	11400	$4.14\pm 0.04$	$\rm 130^{-40}_{+47}$ , $\rm 140^{-30}_{+64}$	1,2
HR 26 B			$\rm 20^{+13}_{-8}$ , $\rm 30^{+70}_{-8}$	1,2
HR 4757 A	10400	$4.05\pm 0.06$	$\rm 200^{-30}_{+40}$ , $200\pm 30$	1,2
HR 4757 B			40_-17, 90_-50	3,4
HR 5422 A	10040	$4.12\pm 0.02$	$\rm 240^{-30}_{+60}$ , $\rm 240^{-20}_{+60}$	3,4
HR 5422 B			50_-20, 100_-50	3,4
HR 26 A	11400	$4.08\pm0.05$	$\rm 175^{-23}_{+14}$	5
			$\rm 1.8^{+0.4}_{-0.2}$	6
HR 4757 A	10400	$4.06\pm0.05$	$\rm 260^{-24}_{+14}$	5
			$\rm 2.5^{+0.5}_{-0.2}$	6
HR 5422 A	10250	$4.08\pm0.06$	$\rm 267^{-39}_{+23}$	5
			$\rm 2.1^{+0.1}_{-0.4}$	6

Notes to Table 4: the results shown in the upper part of the table are from Gerbaldi et al. (2001), those in the lower part are derived in this work. The tracks used for computing the ages are: ¹ Schaller et al. (1993), ² Girardi et al. (2000), ³ D'Antona & Mazzitelli (1998), ⁴ Palla & Stahler (1999), ⁵ Y² post-MS, ⁶ Y² PMS.

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