Table 6
Properties of the κ And system.
| Parameter | κ Andromedae A | κ Andromedae b | Ref. |
|
|
|||
| d(pc) | 51.6 ± 0.5 | ... | 2 |
| Age (Myr) |
|
... | 1, 3 |
| J(mag) | 4.26 ± 0.04 | 15.86 ± 0.21 | 1 |
| H(mag) | 4.31 ± 0.05 | 14.95 ± 0.13 | 1 |
| Ks (mag) | 4.32 ± 0.05 | 14.32 ± 0.09 | 1 |
| L′(mag) | 4.32 ± 0.05 | 13.12 ± 0.1 | 1, 3 |
| NB_4.05(mag) | 4.32 ± 0.05 | 13.0 ± 0.2 | 1 |
| M′(mag) | 4.30 ± 0.06 (a) | 13.3 ± 0.3 | 1 |
| mJ(mag) | 0.70 ± 0.06 | 12.30 ± 0.22 | 1 |
| mH(mag) | 0.75 ± 0.06 | 11.39 ± 0.15 | 1 |
| mKs (mag) | 0.76 ± 0.06 | 10.75 ± 0.11 | 1 |
| mL′(mag) | 0.76 ± 0.06 | 9.56 ± 0.11 | 1 |
| mNB_4.05(mag) | 0.76 ± 0.06 | 9.44 ± 0.23 | 1 |
| mM′(mag) | 0.85 ± 0.06 | 9.75 ± 0.31 | 1 |
| Spectral type | B9IVn | M9-L3: | 1, 4 |
| Teff (K) | 10900 ± 300 |
|
1 |
| 11400 ± 100 | 5 | ||
| 10700 ± 300 | 6 | ||
| log g(dex) | 3.78 ± 0.08 (b) | 4.5 ± 1.0 | 1 |
| 4.10 ± 0.03 | 5 | ||
| 3.87 ± 0.13 | 6 | ||
| M/H(dex) | − 0.36 ± 0.09 | ... | 1, 5 |
| − 0.32 ± 0.15 | 6 | ||
| log 10(L/L⊙) | 1.83 ± 0.04 (c) | − 3.76 ± 0.06 | 1 |
| Mass (M⊙) | 2.6 ± 0.2 (d) |
(e)
|
1 |
| Mass (M⊙) | ≥0.011 (f) | 1 | |
Notes.
The polar surface gravity, estimated by correcting the measured log(g) for the rapid rotation of the star using the method of Huang & Gies (2006).
Found by ajusting BT-Settl spectra with Teff = 10 600, 10 800, and 11 200 K, and log g = 3.5 on the 0.365–22.1 μm flux distribution of the source.
Estimated by comparing the measured Teff and bolometric luminosity of κ And A to evolutionary tracks of Ekström et al. (2012) with and without rotation for ages of 20 to 150 Myr.
Using COND “hot-start” evolutionary models for the most conservative age range (Baraffe et al. 2003).
Reference. [1] This work; [2] van Leeuwen (2007); [3] Carson et al. (2013); [4] Garrison & Gray (1994); [5] Fitzpatrick & Massa (2005); [6] Wu et al. (2011).
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