J/A+AS/126/281 Solar disk spectrum (660-1175A) (Curdt+ 1997)
The solar disk spectrum between 660 and 1175 A. (First Order) obtained by SUMER on SOHO Curdt W., Feldman U., Laming J.M., Wilhelm K., Schuehle U., Lemaire P. <Astron. Astrophys. Suppl. Ser. 126, 281 (1997)> =1997A&AS..126..281C (SIMBAD/NED BibCode)
ADC_Keywords: Sun ; Spectra, ultraviolet Mission_Name: SOHO Keywords: Sun: atmosphere - chromosphere - transition region - UV radiation Description: The near-limb quiet-Sun spectrum recorded on January 25, 1996 near the solar North pole is presented in tabular form and in graphical form. Table 1 - the line list - lists all lines found in the spectrum providing absolute peak intensities, measured and literature wavelengths, identification, and classification of the transition. Fig. 4 is a display the composite spectrum. The most prominent lines are labelled. In this figure intensities are given in instrumental units and logarithmic scale. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 109 496 *Line list table1.tex 83 1072 LaTeX version of table1 fig4.ps 109 1624 *Composite spectrum
Note on table1.dat: This list of spectral lines in the 660-1175Å wavelength range including some 2nd order lines below 590Å was compiled from a spectrum which was recorded with detector B on the solar disk near the north limb. It was generated from a number of sections recorded on the KBr photocathode each about 20Å wide, and complemented by bare photocathode lines at the lower wavelength limit. Note on fig4.ps: The most prominent lines are labelled. In this figure intensities are given in instrumental units and logarithmic scale.
See also: J/A+A/375/591 : SUMER Spectral Atlas of Solar Disk Features (Curdt+, 2001) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 4 I4 10mW/m2/sr/nm Peak ? Peak intensity (1) 5 A1 --- n_Peak [)] Note on peak 7- 17 A11 0.1nm lambda ? wavelength (literature) (2) 18- 24 F7.2 0.1nm lambdaObs ? wavelength as observed (3) 25 A1 --- n_lambdaObs [*] Note (4) 27- 35 A9 --- Ion Ion or atom 37- 60 A24 --- Transu Transition, upper level 62 A1 --- --- [-] dash 64- 85 A22 --- Transl Transition, lower level 87- 88 A2 --- bl [p n] Blend (5) 90-109 A20 --- Rem Remarks (6)
Note (1): The continuum background is not subtracted. These entries have been corrected for the instrument spectral response by applying the radiometric calibration. Intensities of EUV lines in the upper solar atmosphere changes on short time scales. Since the various parts of the spectrum were not recorded simultaneously, the numbers in the first column should be used only as rough indications to the relative strengths of the particular transition. Blends normally have no intensity (or wavelength measurement entry) except for some cases where they could partially be separated. The same applies for members of the Lyman series since their line shape is strongly affected by the self-absorption. Blends are indicated in bl column. Note (2): Wavelengths are mostly from the compilation by R.L. Kelly (1987, J. Phys. Chem. Ref. Data 16, 1). For lines with blends more than one wavelength is given, including unresolved lines if there is evidence (e.g. from the second order spectrum) that they may contribute to some extent. Note (3): The wavelengths were obtained by averaging measurements from two different detector recordings. Lines without identification are included as well and indicated by a '?' Note (4): *: Lines taken as reference lines for the wavelength calibration. Note (5): p: blended with preceding line n: blended with next line Note (6): Questionable identifications are marked by a '?'
Acknowledgements: Werner Curdt
(End) Patricia Bauer [CDS] 24-Apr-1997
|The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line|