Table 3.
Mass-loss rates of AT 2000ch at different episodes derived from optical and radio continuum observations.
Date | LHα | Sν | ν | vw | t | r15 | β | Ṁ(3) | Ṁ(5) | Ṁ(7) |
---|---|---|---|---|---|---|---|---|---|---|
(dd.mm.yyyy) | [erg s−1 cm−2] | [mJy] | [GHz] | [km s−1] | [days] | [cm] | [M⊙ yr−1] | [M⊙ yr−1] | [M⊙ yr−1] | |
01.06.2000* | 2 × 10−14 | 1800 | 25 | 0.58 | 8073 | 2.8 × 10−5 | < 7.7 × 10−5 | |||
16.10.2008* | 4 × 10−14 | 2300 | 9 | 0.33 | 4593 | 5.1 × 10−5 | < 1.1 × 10−4 | |||
12.01.2016 | 2.7 × 10−15 | 2000 | 50 | 1.13 | 15729 | 1.1 × 10−5 | < 2.8 × 10−5 | |||
17.12.2011 | 53 | 6 | 2500 | 160 | < 4.3 × 10−4 | |||||
13.02.2012 | 50 | 6 | 2000 | 15 | 3.1 × 10−6 | |||||
25.03.2012 | 163 | 1.5 | 2000 | 55 | 2.0 × 10−6 | |||||
24.06.2012 | 111 | 1.5 | 2500 | 145 | < 1.9 × 10−5 | |||||
01.12.2014 | < 83 | 1.5 | 2000 | 40 | > 1.2 × 10−6 | |||||
01.12.2014 | < 5.5 | 5.5 | 2000 | 40 | > 3.5 × 10−5 |
Notes. Columns from left to right: observation date, where the asterisk marks the central date of a consecutive measure, Hα luminosity LHα, radio flux Sν, frequency ν, wind velocity vw, elapsed time from latest outburst t, radius of the recently ejected material in 1015 cm, β, and the mass-loss rates derived via Eqs. (3), (5), and (7) denoted in the index.
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