Table 3
Very young stars and PMS candidates selected from the lithium content.
| # Name | RasTyc | α (2000) | Δ (2000) |  |
Sp. Type | Teff | logg | [Fe/H] | A(Li) |  |
|---|---|---|---|---|---|---|---|---|---|---|
| h m s | ° ′ ′′ | (ct/s) | (K) | (dex) | (dex) | |||||
| #1 BD+78 853† | 0000+7940 | 00 00 41.14 | +79 40 39.9 | 0.106 | G2V | 5738 | 4.19 | –0.03 | 3.28 | –4.43 |
| #2 TYC 4496-780-1†,‡ | 0013+7702 | 00 13 40.52 | +77 02 10.9 | 0.102 | G0V | 5924 | 4.14 | –0.03 | 3.31 | –3.33 |
| #3 TYC 4500-1478-1† | 0038+7903 | 00 38 06.03 | +79 03 20.7 | 0.133 | K1V | 5160 | 4.30 | –0.06 | 3.24 | –3.87 |
| #4 BD+78 19†,⋆ | 0039+7905 | 00 39 40.13 | +79 05 30.8 | 0.077 | G5V | 5444 | 4.14 | –0.11 | 3.05 | –4.57 |
| #5 TYC 3266-1767-1 | 0046+4808 | 00 46 53.09 | +48 08 45.2 | 0.278 | K2V | 5067 | 4.21 | –0.09 | 3.58 | –4.02 |
| #6 BD+49 646 | 0222+5033 | 02 22 33.82 | +50 33 37.8 | 0.491 | K2V | 5094 | 4.27 | –0.12 | 2.84 | –3.90 |
| #7 TYC 3695-2260-1 | 0230+5656 | 02 30 44.81 | +56 56 13.0 | 0.051 | G1V | 5874 | 4.31 | –0.03 | 3.46 | –4.47 |
| #8 TYC 2338-35-1 | 0252+3728 | 02 52 24.71 | +37 28 52.0 | 0.048 | G1.5V | 5784 | 4.35 | 0.02 | 4.02 | –4.44 |
| #9 TYC 4321-507-1 | 0300+7225 | 03 00 14.67 | +72 25 41.4 | 0.084 | K2V | 5079 | 4.59 | –0.01 | 2.94 | –4.00 |
| #10 Cl Melotte 20 94 | 0311+4810 | 03 11 16.82 | +48 10 36.9 | 0.092 | G1.5V | 5856 | 4.35 | 0.02 | 3.39 | –4.24 |
| #11 TYC 3710-406-1 | 0316+5638 | 03 16 28.11 | +56 38 58.1 | 0.084 | K1V | 5208 | 4.50 | –0.05 | 2.81 | –4.18 |
| #12 TYC 3715-195-1 | 0323+5843 | 03 23 07.08 | +58 43 07.4 | 0.148 | K1V | 5212 | 4.48 | –0.07 | 2.97 | –3.92 |
| #13 Cl Melotte 20 935 | 0331+4859 | 03 31 28.98 | +48 59 28.6 | 0.081 | G1.5V | 5816 | 4.30 | –0.10 | 3.24 | –4.05 |
| #14 TYC 2876-1944-1 | 0359+4404 | 03 59 16.70 | +44 04 17.1 | 0.264 | K1V | 5235 | 4.50 | –0.06 | 3,36 | –3.62 |
| #15 TYC 3375-720-1 | 0616+4516 | 06 16 46.95 | +45 16 03.1 | 0.097 | G2V | 5739 | 4.21 | 0.11 | 3.47 | –3.83 |
| #16 TYC 3764-338-1 | 0621+5415 | 06 21 56.92 | +54 15 49.0 | 0.426 | G2V | 5719 | 4.14 | –0.08 | 2.98 | –4.15 |
| #17 HD 234808* | 1908+5018 | 19 08 14.03 | +50 18 49.6 | 0.045 | G8III-IV | 5223 | 3.39 | –0.37 | 3.69 | –4.20 |
| #18 KIC 8429280∙ | 1925+4429 | 19 25 01.98 | +44 29 50.7 | 0.254 | K2V | 5055 | 4.41 | –0.02 | 2.96 | –3.96 |
| #19 BD-03 4778 | 2004−0239 | 20 04 49.35 | − 02 39 19.7 | 0.175 | K1V | 5183 | 4.39 | –0.02 | 3.33 | –4.26 |
| #20 HD 332091 | 2016+3106 | 20 16 57.83 | +31 06 55.6 | 0.167 | K1V | 5087 | 4.57 | 0.01 | 2.88 | –3.72 |
| #21 TYC 2694-1627-1 | 2036+3456 | 20 36 16.87 | +34 56 46.1 | 0.037 | G1V | 5832 | 4.33 | –0.01 | 3.30 | –4.33 |
| #22 TYC 2178-1225-1 | 2039+2644 | 20 39 40.81 | +26 44 48.4 | 0.227 | K1V | 5149 | 4.30 | –0.08 | 2.80 | –4.19 |
| #23 BD+68 1182 | 2106+6906 | 21 06 21.74 | +69 06 41.0 | 0.114 | G1.5V | 5828 | 4.31 | –0.01 | 3.39 | –4.31 |
| #24 TYC 3589-3858-1 | 2120+4636 | 21 20 55.42 | +46 36 12.4 | 0.142 | G1.5V | 5699 | 4.36 | 0.04 | 3.07 | –4.29 |
| #25 BD+76 857a | 2223+7741 | 22 23 18.87 | +77 41 57.7 | 0.114 | G1.5V | 5745 | 4.29 | –0.04 | 3.60 | –4.28 |
| #26 TYC 1154-1546-1 | 2233+1040 | 22 33 00.37 | +10 40 34.3 | 0.053◇ | G1.5V | 5544 | 4.39 | 0.03 | 3.65 | –3.44 |
| #27 HD 214995** | 2241+1430 | 22 41 57.40 | +14 30 59.2 | 0.094 | K0III | 4678 | 2.77 | –0.04 | 3.61 | –6.11 |
| #28 BD+17 4799 | 2244+1754 | 22 44 41.49 | +17 54 19.0 | 0.835 | K1V | 5161 | 4.41 | –0.02 | 2.91 | –4.14 |
| #29 TYC 3992-349-1 | 2246+5749 | 22 46 13.19 | +57 49 58.0 | 0.034 | G2V | 5752 | 4.32 | –0.05 | 3.33 | –4.31 |
| #30 TYC 2751-9-1 | 2307+3150 | 23 07 24.83 | +31 50 14.1 | 0.462 | K4V | 4774 | 4.58 | 0.05 | 2.48 | –4.15 |
| #31 V395 Cep | 2320+7414 | 23 20 52.07 | +74 14 07.1 | 0.035 | K0IV | 5093 | 3.58 | –0.02 | 3.68 | –3.27 |
| #32 TYC 584-343-1 | 2321+0721 | 23 21 56.36 | +07 21 33.0 | 0.067 | K0V | 5207 | 4.24 | 0.01 | 3.20 | –4.25 |
| #33 TYC 4606-740-1⊙ | 2351+7739 | 23 51 17.29 | +77 39 35.3 | 0.169 | K1V | 5146 | 4.52 | –0.07 | 3.51 | –3.84 |
| a TYC 2282-1396-1⊕ | 0106+3306 | 01 06 18.71 | +33 06 01.9 | 0.161 | G4V | 5606 | 4.31 | –0.14 | 3.11 | –4.16 |
| b BD+42 636 | 0249+4255 | 02 49 54.69 | +42 55 27.1 | 0.036 | G1.5V | 5825 | 4.24 | –0.02 | 3.07 | –4.52 |
| c TYC 3325-98-1 | 0344+5043 | 03 44 34.50 | +50 43 47.5 | 0.074 | K0V | 5349 | 4.40 | –0.06 | 3.01 | –3.99 |
| d TYC 2949-780-1 | 0646+4147 | 06 46 46.74 | +41 47 12.2 | 0.043 | G2V | 5696 | 4.16 | 0.13 | 3.29 | –4.60 |
| e TYC 2087-1742-1 | 1731+2815 | 17 31 03.33 | +28 15 06.1 | 0.305 | K1V | 5169 | 4.47 | –0.02 | 2.91 | –3.98 |
| f KIC 7985370⊗ | 1956+4345 | 19 56 59.73 | +43 45 08.2 | 0.036 | G1.5V | 5815 | 4.24 | –0.05 | 3.05 | –4.50 |
| g BD+35 4198 | 2038+3546 | 20 38 17.71 | +35 46 33.3 | 0.058 | G1.5V | 5895 | 4.23 | 0.01 | 3.00 | –4.86 |
| h BD+39 4490 | 2114+3941 | 21 14 55.24 | +39 41 11.9 | 0.099 | G1.5V | 5930 | 4.27 | –0.02 | 3.01 | –4.75 |
| i TYC 3198-1809-1 | 2203+3809 | 22 03 49.83 | +38 09 42.9 | 0.033 | G5IV-V | 5678 | 4.28 | 0.04 | 3.06 | –4.95 |
| j TYC 576-1220-1 | 2308+0000 | 23 08 50.46 | +00 00 52.8 | 0.104 | G2V | 5620 | 4.38 | –0.00 | 3.25 | –3.91 |
| k TYC 4283-219-1 | 2324+6215 | 23 24 40.37 | +62 15 51.1 | 0.037 | F9V | 6011 | 3.97 | –0.21 | 3.12 | –4.84 |
Notes. (♯) X-ray count rate from the second ROSAT all-sky survey source catalog (2RXS; Boller et al. 2016). (†) PMS star in Cepheus discovered by Guillout et al. (2010). (‡) Close visual pair (ρ = 1. ′′41, Δ V ≃ 2.2 mag; Fabricius et al. 2002). Parameters of the brighter component. (⋆) SB2 system composed of two nearly identical stars. Parameters derived from spectra taken close to the conjunctions. (∙) Very young star in the Kepler field discovered by Frasca et al. (2011). (◇) X-ray count rate from the ROSAT All-Sky Bright Source Catalog (1RXS; Voges et al. 1999). (⊙) Close visual pair (ρ = 0. ′′82, Δ V ≃ 0.15 mag; Fabricius et al. 2002). (⊕) Close visual pair (ρ = 0. ′′85, Δ V ≃ 0.29 mag; Fabricius et al. 2002). (⊗) Very young star in the Kepler field discovered by Fröhlich et al. (2012). (*) Discarded as PMS candidate on the basis of spectral classification and the position in the HR diagram. Likely lithium-rich giant. (**) Discarded as PMS candidate on the basis of spectral classification and the very low Hα flux. Lithium-rich giant.
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