The TW Hydrae Association is a cluster chain of Sco-Cen

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Table C.1

Literature age estimates for TW Hydrae.

Reference	Age	Method
Makarov & Fabricius (2001)	8.3 Myr	Expansion
Makarov et al. (2005)	4.7 ± 0.6 Myr	Dynamical traceback
Mamajek (2005)	> 10.4 Myr	Expansion
de la Reza et al. (2006)	8.3 ± 0.8 Myr	Dynamical traceback
Ducourant et al. (2014)	7.5 ± 0.7 Myr	Dynamical traceback
Donaldson et al. (2016)	Inconclusive	Dynamical traceback
Miret-Roig et al. (2018)	Inconclusive	Dynamical traceback
Luhman (2023)	${9.6}_{- 0.8}^{+ 0.9}$ $\[9.6_{-0.8}^{+0.9}\]$ Myr	Expansion
Olivares et al. in prep.	10.3 ± 1.1 Myr	Expansion

Soderblom et al. (1998)	$10_{- 5}^{+ 10}$ $\[10_{-5}^{+10}\]$ Myr	Isochrone (Siess et al. 1997 models)
Webb et al. (1999)	~ 10 Myr	Isochrone (D’Antona & Mazzitelli 1997 models)
Barrado Y Navascués (2006)	$10_{- 7}^{+ 10}$ $\[10_{-7}^{+10}\]$ Myr	Isochrone (Baraffe et al. 1998 models)
Weinberger et al. (2013)	~ 10 Myr	Isochrone (Baraffe et al. 1998 models)
Herczeg & Hillenbrand (2015)	2.7 ± 0.4 Myr	Isochrone (D’Antona & Mazzitelli 1997 models)
Herczeg & Hillenbrand (2015)	9.0 ± 1.5 Myr	Isochrone (Pisa models, Tognelli et al. 2011)
Herczeg & Hillenbrand (2015)	7.9 ± 1.4 Myr	Isochrone (Feiden 2016 models)
Herczeg & Hillenbrand (2015)	8.1 ± 1.4 Myr	Isochrone (BHAC15 models, Baraffe et al. 2015)
Bell et al. (2015)	$7_{- 1}^{+ 2}$ $\[7_{-1}^{+2}\]$ Myr	Isochrone (Dartmouth models, Dotter et al. 2008)
Bell et al. (2015)	9 ± 1 Myr	Isochrone (Pisa models, Tognelli et al. 2011)
Bell et al. (2015)	13 ± 1 Myr	Isochrone (Parsec models, Bressan et al. 2012)
Bell et al. (2015)	10 ± 1 Myr	Isochrone (BHAC15 models, Baraffe et al. 2015)
Donaldson et al. (2016)	7.9 ± 1.0 Myr	Isochrone (BHAC15 models, Baraffe et al. 2015)
Luhman (2023)	${11.4}_{- 1.2}^{+ 1.3}$ $\[11.4_{-1.2}^{+1.3}\]$ Myr	Isochrone (empirical, calibrated with Lithium depletion boundary ages)

This work –TWA-a	$9_{- 1}^{+ 2}$ $\[9_{-1}^{+2}\]$ Myr	Isochrone (Parsec models)
This work– TWA-b	$6_{- 1}^{+ 2}$ $\[6_{-1}^{+2}\]$ Myr	Isochrone (Parsec models)

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