J/PASP/106/745 The Spectrum of IC 418 (Hyung+ 1994)
The Spectrum of the Planetary Nebula, IC 418
Hyung S., Aller L. H., and Feibelman W. A.
<Publ. Astron. Soc. Pac. 106, 745, (1994)>
=1994PASP..106..745H 1994PASP..106..745H
ADC_Keywords: Planetary nebulae ; Spectra, ultraviolet
Abstract:
A detailed high spectral resolution study of the spectrum of IC 418
is made for the region 3650Å to 10050Å, using the Hamilton
echelle spectrograph of Lick Observatory, and of the UV spectral
region with archival International Ultraviolet Explorer (IUE) data.
File Summary:
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FileName Lrecl Records Explanation
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ReadMe 80 . This file
table5.dat 69 246 Optical Region line Intensities
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Byte-by-byte description of: table5.dat
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Bytes Format Unit Label Explanations
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1- 8 F8.2 0.1nm lam.obs *?The observed wavelength
10-17 F8.2 0.1nm lam.lab ?The laboratory wavelength
20-32 A13 --- id The line identification
34-41 A8 --- mult The multiplet number
43-48 F6.3 --- k *?Extinction
50-55 F6.2 --- I *?Relative intensity to I(Hbeta=100)
57-63 F7.2 --- F ?The un-corrected flux relative to
F(Hbeta)=100.
66-69 F4.1 --- e_F ? Formal root-mean-square error
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Note on lam.obs:
The observed wavelength in A corrected for the radial velocity,
V_{rad} = 37.375 km/s.
Note on k:
The extinction coefficient, k_λ, as tabulated from
equations given by Seaton (1979MNRAS.187p..73S 1979MNRAS.187p..73S)
Note on I:
the flux I(lam) relative to I(Hbeta) =100 corrected for
interstellar extinction, C = log I(H beta)/F(H beta) = 0.21, a
value derived by comparing reliable Balmer and Paschen lines. that
is, the extinction at lambda 4861 is 0.21 dex.
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(End) Nancy G. Roman [ADC/SDDOO] 20-Mar-1995