Evolution of the T Tauri star population in the Lupus association

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Table 1

Physical properties of the Lupus comoving stars.

Star

T _eff

EW(Hα)

A _V

L / L _⊙

Filter

M / M _⊙

log t

T Tauri

log τ

Ref.

(K)

(Å)

(mag)

(t in Myr)

Subclass

(τ in Myr)

RX J1508.8-3715

4350

1.02

0.25 ± 0.17

0.80 ± 0.15

7.59 ± 0.26

WTTS

6.48 ± 0.14

1,2

RX J1518.4-3738

5250

1.91

0.32 ± 0.10

0.92 ± 0.18

7.52 ± 0.19

WTTS

6.51 ± 0.15

1,2,3

RX J1524.5-3652

5250

1.35

0.44 ± 0.07

1.17 ± 0.27

7.29 ± 0.32

WTTS

6.57 ± 0.17

1,2,3

RX J1525.0-3604

5080

0.94

0.53 ± 0.18

1.68 ± 0.45

6.77 ± 0.39

WTTS

6.65 ± 0.20

1,2,3

RX J1525.5-3613

4900

0.59

0.51 ± 0.21

1.29 ± 0.34

7.06 ± 0.42

WTTS

6.59 ± 0.20

1,2,4

RX J1531.3-3329

5410

1.68

1.54 ± 0.04

1.73 ± 0.54

6.83 ± 0.34

WTTS

6.66 ± 0.23

1,2,3

RX J1534.6-4003

4350

0.78

0.33 ± 0.16

0.82 ± 0.16

7.50 ± 0.36

WTTS

6.48 ± 0.15

1,2,3

RX J1540.7-3756

4205

0.93

0.00:

0.89 ± 0.15

7.05 ± 0.58

WTTS

6.50 ± 0.13

1,2,5

RX J1544.5-3521

4350

0.51

0.59 ± 0.19

0.90 ± 0.25

7.36 ± 0.39

WTTS

6.50 ± 0.21

1,2

Sz73

3850

97.20

2.71 ± 0.11

0.57 ± 0.08

6.34 ± 0.58

CTTS

6.40 ± 0.11

2,6

GQ Lup^*

K7-M0

3955

38.60

0.00:

0.73 ± 0.13

5.82 ± 0.35

CTTS

6.45 ± 0.13

2,6,7

RX J1549.9-3629

4900

1.06

0.28 ± 0.18

1.55 ± 0.55

6.80 ± 0.52

WTTS

6.63 ± 0.26

1,2,4

RX J1552.3-3819

4060

0.68

0.00:

0.80 ± 0.12

6.87 ± 0.54

WTTS

6.48 ± 0.12

1,2,4

RX J1605.7-3905

5250

0.30

0.15 ± 0.07

1.25 ± 0.46

7.20 ± 0.46

WTTS

6.58 ± 0.27

2,3

F304

4205

1.26

0.00:

0.79 ± 0.15

7.42 ± 0.36

WTTS

6.47 ± 0.14

1,2,4

RX J1608.5-3847

3580

5.98

1.00 ± 0.07

0.40 ± 0.05

6.04 ± 0.23

CTTS/TD

6.31 ± 0.11

1,2,4,8

RX J1610.0-4016

4900

0.88

0.52 ± 0.28

1.59 ± 0.57

6.76 ± 0.51

WTTS

6.64 ± 0.26

1,2,3

SZ121

3470

6.50

0.98 ± 0.18

0.31 ± 0.08

6.17 ± 0.31

WTTS

6.25 ± 0.20

2,6

RX J1613.0-4004

4060

0.74

1.34 ± 0.04

0.80 ± 0.13

7.15 ± 0.71

WTTS

6.48 ± 0.13

1,2,4

RX J1511.0-3252AB

4205

0.62

0.00:

0.94 ± 0.12

6.53 ± 0.43

WTTS

6.51 ± 0.11

1,2,4

RX J1511.6-3550

4350

0.58

0.00:

0.96 ± 0.15

7.23 ± 0.40

WTTS

6.52 ± 0.12

1,2,4

RX J1512.6-3417

4350

–

0.56 ± 0.19

0.90 ± 0.19

7.36 ± 0.44

WTTS

6.50 ± 0.16

2,9

HD 135127

6440

4.13

0.10 ± 0.09

1.41 ± 0.08

7.30 ± 0.20

WTTS

6.61 ± 0.06

1,2,4

RX J1515.7-3332

5250

1.68

0.37 ± 0.18

1.22 ± 0.30

7.22 ± 0.36

WTTS

6.58 ± 0.19

1,2,3

RX J1525.6-3537

4205

0.14

0.24 ± 0.15

0.95 ± 0.11

6.88 ± 0.54

WTTS

6.52 ± 0.10

1,2,4

RX J1527.3-3603

K7-M0

3955

0.12

0.50 ± 0.21

0.70 ± 0.11

6.98 ± 0.60

WTTS

6.45 ± 0.12

1,2

RX J1529.3-3737

3470

0.24

0.00:

0.35 ± 0.06

6.24 ± 0.19

WTTS

6.28 ± 0.14

1,2,4

RX J1529.7-3628

4900

0.89

0.46 ± 0.20

1.54 ± 0.34

6.81 ± 0.41

WTTS

6.63 ± 0.17

1,2,3

Sz65^*

3850

19.40

0.29 ± 0.11

0.56 ± 0.08

6.00 ± 0.36

CTTS

6.39 ± 0.12

2,6,10

RX J1539.7-3450

4590

0.16

0.50 ± 0.21

1.04 ± 0.25

7.24 ± 0.49

WTTS

6.54 ± 0.18

1,2

RX J1540.3-3426A

M3.5

3420

3.03

0.00:

0.31 ± 0.05

6.48 ± 0.27

WTTS

6.25 ± 0.14

1,2,11

SSTc2dJ154148.3-350145

M2.7

3500

–

0.00:

0.36 ± 0.07

6.45 ± 0.30

WTTS

6.28 ± 0.15

2,11,12

RX J1542.0-3601

4060

0.32

0.23 ± 0.18

0.76 ± 0.12

7.34 ± 0.44

WTTS

6.46 ± 0.12

1,2

RX J1544.0-3311^*

5250

0.87

0.65 ± 0.19

1.33 ± 0.36

7.11 ± 0.37

WTTS

6.60 ± 0.20

1,2,3

RX J1546.6-3618

5080

0.67

0.58 ± 0.33

1.38 ± 0.46

7.03 ± 0.45

WTTS

6.61 ± 0.25

1,2,3

RX J1546.7-3459

3850

1.53

0.00:

0.59 ± 0.09

6.74 ± 0.49

WTTS

6.40 ± 0.12

1,2

RX J1547.1-3540

4350

0.55

0.20 ± 0.18

0.80 ± 0.10

7.61 ± 0.31

WTTS

6.48 ± 0.10

1,2

RX J1547.6-4018

5080

1.60

0.35 ± 0.07

1.17 ± 0.28

7.24 ± 0.33

WTTS

6.57 ± 0.18

1,2,3

HM Lup

3470

115.30

0.00:

0.34 ± 0.08

6.37 ± 0.27

CTTS

6.27 ± 0.17

2,6

HN Lup^*

M1.5

3650

49.60

2.14 ± 0.11

0.42 ± 0.09

5.88 ± 0.25

CTTS

6.32 ± 0.17

2,6,10

RX J1548.1-3452

M2.5

3525

2.75

0.00:

0.37 ± 0.05

6.29 ± 0.24

WTTS

6.29 ± 0.12

1,2,4

RX J1548.9-3513

4205

0.16

0.51 ± 0.18

0.70 ± 0.11

7.79 ± 0.44

WTTS

6.44 ± 0.12

1,2

Sz76

3720

10.30

0.38 ± 0.18

0.47 ± 0.05

6.80 ± 0.55

WTTS

6.35 ± 0.10

2,6,8

HD 141277^*

5080

1.52

0.49 ± 0.34

1.57 ± 0.54

6.87 ± 0.46

WTTS

6.64 ± 0.25

1,2,3

RX J1550.7-3828

4060

0.88

0.86 ± 0.30

0.75 ± 0.12

6.20 ± 0.47

WTTS

6.46 ± 0.13

1,2,4

Sz77^*

3850

12.40

0.00:

0.57 ± 0.08

6.27 ± 0.38

CTTS

6.39 ± 0.12

2,6,10

RX J1555.4-3338

4350

–

0.00:

0.91 ± 0.15

7.35 ± 0.41

WTTS

6.51 ± 0.13

1,2,4

RX J1556.0-3655

3720

73.60

0.14 ± 0.07

0.48 ± 0.05

6.28 ± 0.37

CTTS

6.35 ± 0.10

1,2,4

Sz82 ^*

3850

39.00

0.00:

0.56 ± 0.08

6.06 ± 0.35

CTTS

6.39 ± 0.12

2,6,8,10

Sz126^*

K7-M0

3955

–

0.60 ± 0.13

0.68 ± 0.12

6.66 ± 0.54

CTTS

6.44 ± 0.14

2,6,10,13

Sz128^*

M1.5

3650

9.90

1.86 ± 0.13

0.43 ± 0.10

6.36 ± 0.41

CTTS

6.33 ± 0.17

2,6,14

RX J1558.9-3646

M1.5

3650

2.81

0.00:

0.43 ± 0.10

6.24 ± 0.31

WTTS

6.33 ± 0.17

1,2,4

CD-3610569

4730

0.71

0.58 ± 0.08

1.10 ± 0.27

7.24 ± 0.39

WTTS

6.55 ± 0.18

1,2,3

RX J1559.9-3750

M0.5

3785

0.51

0.32 ± 0.28

0.51 ± 0.10

5.98 ± 0.47

WTTS

6.37 ± 0.15

1,2,4

SSTc2dJ160000.6-422158

M3.7

3400

–

0.00:

0.30 ± 0.05

6.57 ± 0.31

WTTS

6.24 ± 0.13

2,11,12,15

Sz131

3580

31.90

2.48 ± 0.24

0.41 ± 0.06

6.12 ± 0.77

CTTS

6.31 ± 0.12

2,6,15

RX J1601.9-3613

4730

0.45

0.59 ± 0.21

1.20 ± 0.29

7.10 ± 0.48

WTTS

6.57 ± 0.18

1,2,4

EXLup

3850

43.30

0.00:

0.56 ± 0.08

5.99 ± 0.31

CTTS

6.39 ± 0.12

2,6

RX J1603.8-3938^*

4730

1.13

0.43 ± 0.08

1.01 ± 0.25

7.35 ± 0.39

WTTS

6.53 ± 0.19

1,2,3,16

HD 143978

5860

3.60

0.00:

1.11 ± 0.07

7.88 ± 0.48

WTTS

6.56 ± 0.07

1,2,4

RX J1605.5-3837

3720

1.28

0.00:

0.50 ± 0.05

6.74 ± 0.42

WTTS

6.36 ± 0.09

1,2,4

HO Lup^*

3720

219.80

0.00:

0.48 ± 0.05

6.19 ± 0.31

CTTS

6.35 ± 0.10

2,6,10

Sz90^*

K7-M0

3955

28.50

2.12 ± 0.40

0.66 ± 0.13

6.26 ± 0.65

CTTS

6.43 ± 0.15

2,6,10

Sz91^*

M0.5

3785

95.90

1.93 ± 0.11

0.52 ± 0.10

6.51 ± 0.44

CTTS/TD

6.38 ± 0.15

2,6,10

RX J1607.2-3839

4060

1.40

0.29 ± 0.20

0.75 ± 0.11

6.29 ± 0.47

WTTS

6.46 ± 0.12

1,2,4

Sz95 ^*

M1.5

3650

10.20

1.29 ± 0.11

0.43 ± 0.10

6.30 ± 0.37

CTTS/TD

6.33 ± 0.17

2,6,15

RX J1608.0-3857

3850

1.14

0.24 ± 0.22

0.56 ± 0.08

6.06 ± 0.42

WTTS

6.39 ± 0.12

1,2,4

Sz96^*

M1.5

3650

11.00

0.43 ± 0.11

0.44 ± 0.10

6.17 ± 0.33

CTTS/TD

6.33 ± 0.17

2,6,10

RX J1608.3-3843

4060

0.11

0.00:

0.80 ± 0.12

6.87 ± 0.44

WTTS

6.48 ± 0.12

1,2,4

Sz97

3470

58.20

0.95 ± 0.11

0.34 ± 0.08

6.34 ± 0.28

CTTS

6.28 ± 0.17

2,6

RX J1608.6-3922

4205

7.42

1.52 ± 0.07

0.93 ± 0.13

6.49 ± 0.47

CTTS

6.51 ± 0.11

1,2,4,8

SSTc2dJ160853.2-391440

K7.8

3900

–

4.60 ± 0.43

0.61 ± 0.10

6.45 ± 0.70

CTTS

6.41 ± 0.13

2,11,12,15

RX J1608.9-3905

4900

0.84

0.38 ± 0.18

1.86 ± 0.34

6.47 ± 0.40

WTTS

6.68 ± 0.14

1,2,4

RX J1608.9-3945

M3.5

3420

2.69

0.16 ± 0.14

0.32 ± 0.06

6.36 ± 0.28

WTTS

6.26 ± 0.15

1,2,4

Sz111

M1.5

3650

145.20

0.00:

0.43 ± 0.10

6.38 ± 0.33

CTTS

6.33 ± 0.17

2,6

Sz112

3370

46.70

0.81 ± 0.11

0.30 ± 0.05

6.26 ± 0.29

CTTS/TD

6.24 ± 0.14

2,6

V908Sco

3370

33.00

0.00:

0.30 ± 0.04

6.18 ± 0.55

CTTS

6.24 ± 0.13

2,6

Sz115

3370

7.10

0.00:

0.29 ± 0.05

6.55 ± 0.30

WTTS

6.23 ± 0.15

2,6,15,19

Sz134

3720

90.50

0.00:

0.47 ± 0.05

6.64 ± 0.40

CTTS

6.35 ± 0.10

2,6

RX J1609.4-3850

M0.5

3785

1.64

0.13 ± 0.12

0.51 ± 0.08

5.86 ± 0.32

WTTS

6.37 ± 0.13

1,2,4

Sz116^*

M1.5

3650

3.90

0.42 ± 0.24

0.43 ± 0.10

6.45 ± 0.43

WTTS

6.33 ± 0.18

2,6,15

Sz117

3580

20.50

0.43 ± 0.11

0.39 ± 0.05

6.38 ± 0.32

CTTS

6.31 ± 0.12

2,6

Sz118

4205

28.30

4.19 ± 0.11

0.96 ± 0.14

6.73 ± 0.88

CTTS

6.52 ± 0.11

2,6

RX J1609.9-3923^*

M1.5

3650

13.67

2.33 ± 0.07

0.42 ± 0.09

5.88 ± 0.28

CTTS/TD

6.32 ± 0.17

1,2,4

Sz119

3370

4.50

0.53 ± 0.18

0.30 ± 0.05

6.18 ± 0.61

WTTS

6.25 ± 0.13

2,6

Sz122

3580

4.80

0.37 ± 0.18

0.39 ± 0.05

6.45 ± 0.38

WTTS

6.31 ± 0.12

2,6

Sz123^*

3720

250.60

0.86 ± 0.11

0.48 ± 0.05

6.38 ± 0.43

CTTS

6.35 ± 0.10

2,6,10

RX J1612.0-3840

4350

0.72

0.61 ± 0.26

1.15 ± 0.25

5.87 ± 0.41

WTTS

6.56 ± 0.16

1,2,4

SSTc2dJ161207.6-381324

M4.5

3305

3.60

0.00:

0.25 ± 0.05

6.14 ± 0.64

WTTS

6.20 ± 0.15

2,11,12,18

SSTc2dJ161243.8-381503

K4.8

4400

–

1.27 ± 0.12

1.20 ± 0.18

6.18 ± 0.45

CTTS

6.57 ± 0.12

2,11,12,15

RX J1614.4-3808

4060

0.46

0.23 ± 0.17

0.70 ± 0.11

7.54 ± 0.35

WTTS

6.45 ± 0.12

1,2

HD 147402

5830

–

0.37 ± 0.28

1.14 ± 0.16

7.40 ± 0.16

WTTS

6.56 ± 0.11

2,3,8

Notes.

^(*)

For each star, we provide the spectral type, temperature, Hα equivalent width, visual extinction, luminosity, photometric filter used to compute luminosities, the mass and age derived from the Siess et al. (2000) models, disk lifetime computed from Eq. (5), T Tauri subclass, and sources of photometric/spectroscopic information. The A_V estimate of 0.00: denotes a non-physical negative value or a non-significant result. Stars marked with “^∗” are binary (or multiple) systems (see Sect. 2).

Reference. (1) Krautter et al. (1997); (2) 2MASS (Cutri et al. 2003); (3) Torres et al. (2006); (4) Wichmann et al. (1997a); (5) Sartori et al. (2003); (6) Hughes et al. (1994); (7) Neuhäuser et al. (2008); (8) Wahhaj et al. (2010); (9) Wichmann et al. (1997b); (10) Ghez et al. (1997); (11) Comerón et al. (2009); (12) López Martí et al. (2011); (13) Valenti et al. (2003); (14) Brandner et al. (1996); (15) Merín et al. (2008); (16) Guenther et al. (2001); (17) Alcalá et al. (2014); (18) Comerón et al. (2013); (19) Cieza et al. (2007).

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