Table 1.
Polarization of NGC 2992N.
| Date | Type | λ range | p | θ | Ref. |
|---|---|---|---|---|---|
| (yyymmdd) | (Å) | (%) | (°) | ||
| 1980-04-08 | 1.9 | 3800–5600 | 3.32 ± 0.18 | 33 ± 2 | 1 |
| 1980-04-16 | 1.9 | 5300–6600 | 2.84 ± 0.27 | 31 ± 3 | 1 |
| 1980-04-15 | 1.9 | [O III] | 6.61 ± 0.59 | 41 ± 3 | 1 |
| 1980-04-15 | 1.9 | Hα | 5.68 ± 0.33 | 41 ± 1 | 1 |
| 1986-02-01 | 2 | B | 3.34 ± 0.34 | 39 ± 3 | 2 |
| 1986-02-01 | 2 | V | 3.16 ± 0.26 | 36 ± 3 | 2 |
| 1986-02-01 | 2 | R | 2.40 ± 0.21 | 38 ± 3 | 2 |
| 1986-02-01 | 2 | J | 1.27 ± 0.11 | 36 ± 3 | 2 |
| 1986-02-01 | 2 | H | 1.18 ± 0.11 | 38 ± 3 | 2 |
| 1989-03-04 | 2 | 3200–6200 | 3.11 ± 0.10 | 36 ± 1 | 3 |
| 1990-12-11 | 2 | [O III] | 3.97 ± 0.41 | 40 ± 3 | 4 |
| 1995-01-30 | 2 | V | 3.28 ± 0.39 | 39 ± 3 | 5 |
| 1995-01-30 | 2 | I | 2.68 ± 0.25 | 38 ± 3 | 5 |
| 2018-04-20 | 1.8 | 4620–4820 | 4.56 ± 0.10 | 38 ± 1 | 6 |
| 2018-04-20 | 1.8 | 5300–6600 | 3.92 ± 0.03 | 37 ± 1 | 6 |
| 2018-04-20 | 1.8 | 8350–8550 | 2.92 ± 0.06 | 38 ± 1 | 6 |
| 2018-04-20 | 1.8 | V | 4.17 ± 0.03 | 38 ± 1 | 6 |
| 2018-04-20 | 1.8 | R | 3.65 ± 0.02 | 37 ± 1 | 6 |
| 2018-04-20 | 1.8 | I | 2.65 ± 0.02 | 38 ± 1 | 6 |
| 2018-04-20 | 1.8 | Hβ | 5.27 ± 0.15 | 38 ± 1 | 6 |
| 2018-04-20 | 1.8 | [O III] | 4.98 ± 0.15 | 38 ± 1 | 6 |
| 2018-04-20 | 1.8 | Hα | 4.81 ± 0.10 | 38 ± 1 | 6 |
| 2020-01-01 | 1.8 | Gunn g | 3.72 ± 0.03 | 36 ± 1 | 7 |
Notes. The AGN types from 1980 to 1995 and in 2020 were estimated from the compilation of Guolo et al. (2021). References for the polarization measurements: (1) Thompson & Martin (1988); (2) Brindle et al. (1990); (3) Kay (1994); (4) Goodrich (1992); (5) Felton (1999); (6) This work – FORS2 ; (7) This work – ISIS. The errors of the polarization angle are rounded to the nearest degree, and to 1° when smaller than one degree.
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