Table 6.
Open in new tab

Parameters of HD 193949, the CSPN of NGC 6905, obtained with PoWR.

ParameterValueComment
d [kpc]2.7 ± 0.2Bailer-Jones et al. (2021)
E(B − V) [mag]0.20 ± 0.05SED fit
M⋆ [M⊙]0.6Adopted
T⋆ [kK]|$140^{+5}_{-2}$|Defined at τRoss = 20
log (L⋆/L⊙)3.9 ± 0.1
R⋆ [R⊙]0.15 ± 0.02stellar radius
log Rt [R⊙]0.75 ± 0.05transformed radius (see equation 3)
|$\dot{M}/$|M⊙ yr−1(1.1 ± 0.3) × 10−7
v∞ [km s−1]2000 ± 100
D10Adopted density contrast
β1β-law exponent
Chemical abundances (mass fraction)
H<0.05Upper limit
He0.55 ± 0.05
C0.35 ± 0.05
N<6.9 × 10−51/10 solar, upper limit
O0.08 ± 0.01
Ne0.02 ± 0.01
Fe1.4 × 10−3Solar, adopted
ParameterValueComment
d [kpc]2.7 ± 0.2Bailer-Jones et al. (2021)
E(B − V) [mag]0.20 ± 0.05SED fit
M⋆ [M⊙]0.6Adopted
T⋆ [kK]|$140^{+5}_{-2}$|Defined at τRoss = 20
log (L⋆/L⊙)3.9 ± 0.1
R⋆ [R⊙]0.15 ± 0.02stellar radius
log Rt [R⊙]0.75 ± 0.05transformed radius (see equation 3)
|$\dot{M}/$|M⊙ yr−1(1.1 ± 0.3) × 10−7
v∞ [km s−1]2000 ± 100
D10Adopted density contrast
β1β-law exponent
Chemical abundances (mass fraction)
H<0.05Upper limit
He0.55 ± 0.05
C0.35 ± 0.05
N<6.9 × 10−51/10 solar, upper limit
O0.08 ± 0.01
Ne0.02 ± 0.01
Fe1.4 × 10−3Solar, adopted
Table 6.
Open in new tab

Parameters of HD 193949, the CSPN of NGC 6905, obtained with PoWR.

ParameterValueComment
d [kpc]2.7 ± 0.2Bailer-Jones et al. (2021)
E(B − V) [mag]0.20 ± 0.05SED fit
M⋆ [M⊙]0.6Adopted
T⋆ [kK]|$140^{+5}_{-2}$|Defined at τRoss = 20
log (L⋆/L⊙)3.9 ± 0.1
R⋆ [R⊙]0.15 ± 0.02stellar radius
log Rt [R⊙]0.75 ± 0.05transformed radius (see equation 3)
|$\dot{M}/$|M⊙ yr−1(1.1 ± 0.3) × 10−7
v∞ [km s−1]2000 ± 100
D10Adopted density contrast
β1β-law exponent
Chemical abundances (mass fraction)
H<0.05Upper limit
He0.55 ± 0.05
C0.35 ± 0.05
N<6.9 × 10−51/10 solar, upper limit
O0.08 ± 0.01
Ne0.02 ± 0.01
Fe1.4 × 10−3Solar, adopted
ParameterValueComment
d [kpc]2.7 ± 0.2Bailer-Jones et al. (2021)
E(B − V) [mag]0.20 ± 0.05SED fit
M⋆ [M⊙]0.6Adopted
T⋆ [kK]|$140^{+5}_{-2}$|Defined at τRoss = 20
log (L⋆/L⊙)3.9 ± 0.1
R⋆ [R⊙]0.15 ± 0.02stellar radius
log Rt [R⊙]0.75 ± 0.05transformed radius (see equation 3)
|$\dot{M}/$|M⊙ yr−1(1.1 ± 0.3) × 10−7
v∞ [km s−1]2000 ± 100
D10Adopted density contrast
β1β-law exponent
Chemical abundances (mass fraction)
H<0.05Upper limit
He0.55 ± 0.05
C0.35 ± 0.05
N<6.9 × 10−51/10 solar, upper limit
O0.08 ± 0.01
Ne0.02 ± 0.01
Fe1.4 × 10−3Solar, adopted
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