Table 9
Spectroscopy and gyrochronology of all Her-Lyr candidates.
Spectroscopy | Gyrochronology | References | |||||||||
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Star | SpT | M tot | T eff | EW(Li) |
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P | t gyro | error | ||
Name | HD/HIP | M ⊙ | K | mÅ | Myr | days | Myr | % | |||
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1. V439 And | HD 166 | K0 V | 0.99 | 5471 | 75.5 | –4.64 | 1440 | 5.69 | 231 | 12 | 2, 3, 4, 5, 9, 10, 13, 23, 25, 30, 32 |
2. HIP 1481 | HD 1466 | F9 V | 0.98 | 6149 | 125 | –4.36 | 220 | ≤ 2.58 | ≤ 161 | 31 | 1, 2, 5, 13, 24, 28 |
3. G 270–82 | HD 4915 | G1.5 | 0.91 | 5630 | ~ 0# | –4.86 | 4180 | ≤ 22.8¶ | ≤ 3409 | 17 | 7, 20, 23, 24, 25, 27, 30 |
4. EX Cet | HD 10008 | G5 V | 0.93 | 5170 | 103 | –4.29 | 126 | 7.15 | 315 | 12 | 2, 3, 4, 5, 7, 24, 25, 27 |
5. LTT 10580 | HD 10086 | G5 IV | 1.04 | 5685 | 16 | –4.60 | 1430 | ≤ 16.0 | ≤ 1672 | 15 | 7, 13, 20, 23, 24, 30, 32 |
6. 84 Cet | HD 16765 | F7 IV | 1.20 | 6240 | 73 | –4.534 | 760 | ≤ 1.8 | ≤ 148 | 77 | 3, 9, 11, 13, 24, 33 |
7. 84 Cet B | HD 16765 B | K2 V | 0.70 | ... | ... | ... | ... | ... | ... | ... | 9 |
8. BC Ari (SB) | HD 17382 | K1 V | 0.90 | 5234 | <5 | –4.44 | 400 | ≤ 13.3 | ≤ 901 | 13 | 2, 3, 7, 8, 9, 10, 12, 20, 24, 25 |
9. NLTT 8996 | HD 17382 C | M 7 | 0.13 | ... | ... | ... | ... | ... | ... | ... | 7, 9 |
10. EP Eri | HD 17925 | K1 V | 0.89 | 5150 | 212 | –4.33 | 170 | 6.725 | 242 | 11 | 1, 3, 4, 5, 6, 8, 9, 10, 11, 16, 23, 25, 30, 31, 33 |
11. 1E 0318–19.4 | ... | K7 V | 0.65 | ... | 63 | ... | ... | ... | ... | ... | 3, 5, 11, 24 |
12. G 112–35 | HIP 37288 | M0 V | 0.6 | 4156 | ... | ... | ... | ... | ... | ... | 3, 5, 24, 25 |
13. HD 25457 | HD 25457 | F5 V | 1.17 | 6246 | 118 | –4.417 | 340 | ≤ 3.35 | ≤ 381 | 59 | 3, 4, 5, 8, 9.13, 15, 20, 24, 25, 27, 29, 33 |
14. G 248–16 | HD 25665 | K2.5 V | 0.66 | 4950 | ... | ... | ... | ≤ 15.6 | ≤ 719 | 12 | 3, 7, 8, 10, 20, 23, 24, 25, 27, 30, 32 |
15. 39 Tau | HD 25680 | G5 V | 1.05 | 5807 | 61 | –4.30 | 140 | 12.00 | 1303 | 17 | 2, 7, 8, 9, 23, 24, 25, 30, 32 |
16. V538 Aur | HD 37394 | K1 V | 0.91 | 5200 | 2.2 | –4.55 | 840 | 10.00 | 527 | 12 | 2, 3.4, 5, 7, 8, 16, 23, 24, 25, 30, 32 |
17. LHS 1775 | HD 233153 | M0.5 V | 0.45 | 3740 | 16 | ... | ... | ... | ... | ... | 2, 3, 5, 7, 8, 20, 26 |
18. HD 54371 (SB) | HD 54371 | G8 V | 1.03 | 5503 | ... | ... | ... | ... | ... | ... | 2, 4, 13, 24, 25, 27, 32 |
19. HD 70573 | HD 70573 | G1/2 V | 1.0 | 5899 | 149 | ... | ... | 3.296 | 125* | 14 | 3, 5, 7, 11, 16, 22, 24 |
20. DX Leo | HD 82443 | K1 V | 0.84 | 5292 | 176.3 | –4.08 | 20 | 5.38 | 197 | 11 | 2, 3, 4, 5, 6, 7, 8, 9, 16, 24, 25, 32 |
21. GJ 354.1 B | ... | M5.5 | 0.1 | ... | ... | ... | ... | ... | ... | ... | 2, 9 |
22. EE Leo | HIP 53020 | M4 | 0.15 | ... | ... | –5.33 | ... | ... | ... | ... | 3, 5, 26 |
23. HH Leo | HD 96064 | G5 V | 0.92 | 5410 | 114 | –4.34 | 190 | 6.9 | 312 | 12 | 2, 3, 4, 5, 9, 24, 25, 33 |
24. LTT 4076 | ... | M0 | 0.6 | ... | ... | ... | ... | ... | ... | ... | 9 |
25. BD–03 3040C | ... | M0 | 0.6 | ... | ... | ... | ... | ... | ... | ... | 9 |
26. MN UMa | HD 97334 | G0 V | 1.08 | 5898 | 10 | –4.27 | 110 | 7.60† | 643 | 17 | 2, 3, 4, 5, 9, 13, 23, 24, 25, 30, 32 |
26a. Gl 471 Ba | ... | L4.5 | 0.035 | ... | ... | ... | ... | ... | ... | ... | 9 |
26b. Gl 471 Bb | ... | L6 | ... | ... | ... | ... | ... | ... | ... | ... | 9 |
27. HR 4758 | HD 108799 | G1/2 | 1.04 | 6009 | 119 | –4.427 | 370 | ≤ 8.24 | ≤ 61§ | 8 | 7, 12, 13, 24, 33 |
28. GJ 469.2 B | ... | K2/3 | 0.7 | 4700 | ... | ... | ... | ... | ... | ... | |
29. LW Com | HD 111395 | G5 V | 1.01 | 5600 | 6.3 | –4.43 | 370 | 15.8 | 1582 | 16 | 3, 4, 5, 13, 16, 20, 23, 24, 25, 27, 30, 32 |
30. HIP 63317 | HD 112733 | G5 V | 0.93 | 5512 | 93.5 | –4.19 | 50 | ≤ 13.83 | ≤ 1143 | 14 | 5, 8, 11, 13, 24 |
31. HIP 63322 | HIP 63322 | G6 V | 0.85 | 4798 | 112 | ... | ... | ... | ... | ... | 24 |
32. PX Vir (SB) | HD 113449 | G5 V | 0.83 | 5187 | 142 | ... | ... | 6.47 | 231 | 11 | 2, 3, 4, 5, 6, 7, 9, 24, 25 |
33. NQ UMa | HD 116956 | G9 V | 0.94 | 5352 | 40 | –4.22 | 70 | 4.27 | 124 | 10 | 2, 3, 4, 5, 13, 24, 25, 32 |
34. NSV 6424 | HIP 67092 | K5 | 0.65 | 4162 | ... | –3.96 | ... | ... | ... | ... | 3, 5, 8, 24 |
35. α Cir | HD 128898 | A7 V | 1.81 | 7452 | ... | ... | ... | 4.47 | ... | ... | 13, 15, 21, 24 |
36. LTT 5826 | ... | K5 V | 0.72 | 4346 | ... | ... | ... | ... | ... | ... | 3, 5 |
37. LTT 6256 | HD 139664 | F4 V | 1.36 | 7111 | < 9.1 | –4.59 | 1080 | ≤ 0.94 | ≤ 223 | 94 | 3, 13, 14, 18, 24, 29, 33 |
38. LTT 14623 | HD 139777 | G0 | 1.03 | 5746 | 151 | –4.41 | 320 | ≤ 9.83 | ≤ 767 | 15 | 4, 6, 13, 24, 25, 32 |
39. LTT 14624 | HD 139813 | G5 | 0.89 | 5343 | 142 | –4.40 | 300 | ≤ 8.33 | ≤ 408 | 12 | 2, 4, 20, 23, 24, 25, 30, 32 |
40. V382 Ser | HD 141272 | G8 V | 0.88 | 5270 | 6 | –4.30 | 140 | 14.045 | 1029 | 13 | 2, 3, 4, 6, 9, 20, 24, 25, 32 |
41. HD 141272 B | ... | M3 | 0.3 | ... | ... | ... | ... | ... | ... | ... | 6, 9 |
42. HN Peg | HD 206860 | G0 V | 0.90 | 5930 | 124.8 | –4.48 | 530 | 4.70 | 296 | 18 | 1, 2, 3, 4, 5, 7, 8, 9, 13, 15, 16, 23, 24, 25, 27, 30, 32 |
42a. HN Peg B | ... | T2.5 | 0.021 | ... | ... | ... | ... | ... | ... | ... | 9 |
43. HD 207129 | HD 207129 | G0 V | 1.00 | 6025 | 44 | –4.80 | 3200 | ... | ... | ... | 1, 3, 5, 13, 14, 19, 23, 24, 28, 30 |
44. V447 Lac | HD 211472 | K1 V | 0.88 | 5258 | ... | ... | ... | 4.43 | 132 | 10 | 2, 3, 7, 9, 24 |
45. LTT 9081 | HD 213845 | F5 V | 1.33 | 7037 | ... | –4.512 | 660 | ≤ 2.18 | ≤ 261 | 29 | 3, 5, 8, 13, 15, 24, 25, 29, 33 |
46. V368 Cep | HD 220140 | G9 V | 0.9 | 5144 | 205.3 | –3.622 | ... | 2.74 | 49 | 9 | 3, 8, 9, 16, 24, 32 |
47. NLTT 56532 | ... | early M | 0.2 | ... | ... | ... | ... | ... | ... | ... | 9 |
48. NLTT 56725 | ... | M5.0 | 0.04 | ... | ... | ... | ... | ... | ... | ... | 9 |
Notes. Canonical members are written in bold face. The names in the first column represent the SIMBAD name, in the second column the HD or HIP name is given. Spectral type, mass, effective temperature, lithium equivalent width, calcium HK index , and age derived from chromospheric activity are presented as used in Sect. 5. The ages are calculated using the chromospheric activity index and gyrochronology (this work). All other values are taken from the literature. Brown dwarf companions are further denoted by the primary star’s number, followed by a small letter, starting with “a”. Spectroscopic binaries have a “(SB)” after their name in the first column. All companions are indented.
Based on vsini = 13.97 km s-1 (Martínez-Arnáiz et al. 2010), this object might be very young (≲46 Myr);
possibly the result of a stellar merger (Fuhrmann 2008);
conversion from Li abundance to equivalent width (Soderblom et al. 1993) reveals very small values, which are consistent with zero.
Reference. (1) Henry et al. (1996); (2) Gaidos (1998); (3) Montes et al. (2001); (4) Fuhrmann (2004); (5) López-Santiago et al. (2006); (6) Eisenbeiss et al. (2007); (7) Fuhrmann (2008); (8) López-Santiago et al. (2010); (9) Raghavan et al. (2010); (10) Tokovinin (1992); (11) Favata et al. (1995); (12) Favata et al. (1996); (13) Allende Prieto & Lambert (1999); (14) Lachaume et al. (1999); (15) Reiners & Schmitt (2003); (16) Messina et al. (2003); (17) Cutispoto et al. (2003); (18) Mallik et al. (2003); (19) Israelian et al. (2004); (20) Wright et al. (2004); (21) Bychkov et al. (2005); (22) Pojmanski (2002); Reiners & Schmitt (2003); Pojmanski & Maciejewski (2004, 2005); Pojmanski et al. (2005); (23) Valenti & Fischer (2005); (24) Ammons et al. (2006); (25) Maldonado et al. (2010); (26) Browning et al. (2010); (27) Masana et al. (2006); (28) Torres et al. (2006); (29) Reiners (2006); (30) Takeda et al. (2007); (31) White et al. (2007); (32) Mishenina et al. (2008); (33) Schröder et al. (2009); (34) Martínez-Arnáiz et al. (2010).
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