CDROM/APJS/V91/P461 Solar Active Region EUV Spectrum from SERTS (Thomas+ 1994) ================================================================================ Extreme Ultraviolet Spectrum of a Solar Active Region from SERTS Roger J. Thomas & Werner M. Neupert <1994, ApJS, 91, 461> =1994ApJS...91..461T ================================================================================ Abstract: We present wavelengths and absolute intensities for 269 emission lines from a single active region observed by the Solar EUV Rocket Telescope and Spectrograph (SERTS) on 1989 May 5. For this catalog, the imaged spectra have been spatially averaged over a field of view 7"x276" cutting through the center of AR5464 at S18 W45. Wavelength coverage is 170-450 A with a spectral resolution approaching 10,000. Most of the line positions are determined to 5 mA or better, representing the highest accuracy yet obtained for solar wavelengths throughout this spectral interval. The relative photometric calibration of the instrument is good to +/-20% over its first-order range, and has been placed onto an absolute scale that should be correct to within a factor less than 2. Where known, identifications, atomic transitions and formation temperatures are also given. The identified lines arise from temperatures that cover the range 4.7 <= log T <= 6.8, providing information about the Sun's corona and upper transition region. Upper limits to the intensity of any emission line not included here can be estimated from the measured instrumental sensitivity. This averaged EUV spectrum should prove useful as a source of accurate wavelengths and intensities for emission characteristic of the high-temperature plasma associated with a solar active region and small subflare. Keywords: Sun: activity -- Sun: UV radiation File Summary: -------------------------------------------------------------------------------- File Name Lrecl Records Explanations -------------------------------------------------------------------------------- table1.dat 41 12 Wavelength calibration results table2a.dat 16 44 Instrumental 3 sigma sensitivity levels versus wavelength (first order) table2b.dat 20 23 Instrumental 3 sigma sensitivity levels versus wavelength (second order) table3.dat 71 285 Solar active region EUV spectrum notes3.dat 79 47 Notes to table 3 table4.dat 95 245 Solar active region lines by ion table5.dat 66 30 Number of lines by ion in solar active region EUV spectrum table6.dat 33 53 Unidentified lines in solar active region EUV spectrum spectrum.dat 79 19468 Spectrum published as Figures 3a - 3k spectrum.doc 79 21 Document describing spectrum.dat table.tex 78 18 AASTeX file that generates tables 1, 2, 3, 4, 6 table1.tex 79 28 AASTeX version of table 1 table2.tex 78 46 AASTeX version of table 2 table3.tex 88 309 AASTeX version of table 3 notes3.tex 79 96 AASTeX version of notes to table 3 table4.tex 99 331 AASTeX version of table 4 table5.tex 86 55 AASTeX version of table 5 table6.tex 85 67 AASTeX version of table 6 -------------------------------------------------------------------------------- Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 8 F8.2 5um.pix Cen Fitted line centroid 9-18 F10.4 0.1nm SERTS Measured SERTS wavelength using calibration relationship 19-28 F10.4 0.1nm Std Known wavelength of line standard 29-30 2X --- --- Blank 31-35 A5 --- Ion Ion of measured line standard 36-41 F6.1 0.1pm Res Residual (SERTS - Std) (milliAngstroms) -------------------------------------------------------------------------------- Byte-by-byte Description of file: table2a.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 I3 0.1nm Lambda 1st-order wavelength 4- 9 I6 mW/m2/sr/A 3sig_1 1st-order spectral intensity sensitivity (3-sigma) 10-16 F7.1 mW/m2/sr 3L_1 *1st-order integrated intensity sensitivity (3-sigma) -------------------------------------------------------------------------------- Notes for file: table2a.dat -------------------------------------------------------------------------------- 3L_1: Values of 3L_1 can be used as intensity upper limits for lines not listed in Table 3. -------------------------------------------------------------------------------- Byte-by-byte Description of file: table2b.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 I3 0.1nm Lambda 2nd-order wavelength 4- 9 I6 mW/m2/sr/A 3sig_2 2nd-order spectral intensity sensitivity (3-sigma) 10-16 F7.1 mW/m2/sr 3L_2 *2nd-order integrated intensity sensitivity (3-sigma) -------------------------------------------------------------------------------- Notes for file: table2b.dat -------------------------------------------------------------------------------- 3L_2: Values of 3L_2 can be used as intensity upper limits for lines not listed in Table 3. -------------------------------------------------------------------------------- Byte-by-byte Description of file: table3.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 7 F7.3 0.1nm Lambda Measured line wavelength 8 A1 --- n_Lambda [s] s = second-order line 9-12 I4 0.1pm e_Lambda 1-sigma uncertainty in Lambda (mA) 13-21 F9.1 mW/m2/sr I Measured integrated line intensity 22-29 F8.1 mW/m2/sr e_I 1-sigma uncertainty in I 30-34 I5 0.1pm W Measured line full-width-half-maximum 35-38 I4 0.1pm e_W 1-sigma uncertainty in W 39-40 2X --- --- Blank 41-48 A8 --- Ion Emitting ion (if known) 49 A1 --- n_Ion [b] b = blend 50-54 F5.3 0.1nm Behr []? Fractional part of wavelength reported by Behring et al. 1976, ApJ, 203, 521 55-59 F5.2 0.1nm Dere []? Fractional part of wavelength reported by Dere 1978, ApJ, 221, 1062 plus Feldman et al. 1987, Atlas of Skylab EUV Spectroheliograms, Washington, DC: Naval Research Laboratory 60-65 F6.3 0.1nm Kelly []? Fractional part of wavelength reported by Kelly 1987, J. Phys. Chem. Ref. Data, 16, Suppl., 1, 1371 66-68 I3 --- ID *Identification code 69- 1X --- --- Blank 70-71 A2 --- Note Special note, see file notes3.dat -------------------------------------------------------------------------------- Notes for file: table3.dat -------------------------------------------------------------------------------- ID: 0 = Unidentified; 1 = Behring et al. 1976, ApJ, 203, 521 2 = Dere 1978, ApJ, 221, 1062 3 = Feldman et al. 1987, Atlas of Skylab EUV Spectroheliograms, Washington, DC: Naval Research Laboratory 4 = This work using Kelly 1987, J. Phys. Chem. Ref. Data, 16, Suppl., 1, 1371 5 = Keenan et al. 1991, ApJ, 379, 406 6 = Mason & Bhatia 1978, MNRAS, 184, 423 7 = Kastner 1991, Sol. Phys., 135, 343 8 = Behring 1992, private communication 9 = Monsignori-Fossi 1992, private communication -------------------------------------------------------------------------------- Byte-by-byte Description of file: notes3.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 2 A2 --- Note Note number, 1-20, i, and ii; if this field is blank the text is a continuation of the previous record 3- 1X --- --- Blank 4-80 A77 --- Text Text of the note -------------------------------------------------------------------------------- Byte-by-byte Description of file: table4.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 8 A8 --- Ion *Emitting ion 9-12 F4.1 --- logT Base 10 log of the temperature of maximum ionization abundance 13-20 F8.3 0.1nm Lambda Measured line wavelength 21- 1X --- --- Blank 22 A1 --- s_Lambda [s] s = second order line 23 A1 --- b_Lambda [b] b = blend 24-26 I3 0.1pm e_Lambda 1-sigma uncertainty in Lambda 27-34 F8.1 mW/m2/sr I Measured integrated line intensity 35-42 F8.1 mW/m2/sr e_I 1-sigma uncertainty in I 43- 1X --- --- Blank 44-59 A16 --- Config *Electronic configurations involved in the emission transition 60-89 A30 --- Terms *Electronic level terms involved in the emission transition 90- 1X --- --- Blank 91-92 A2 --- IES Iso-electronic sequence of emitting ion 93-95 I3 --- TN []? Transition number for the emission line -------------------------------------------------------------------------------- Notes for file: table4.dat -------------------------------------------------------------------------------- Ion: If this field is blank, other fields are continuations of previous record. Config, Terms: The field contains superscript and subscript notation from the AASTeX version of the table. Dollar signs ($), indicating TeX math mode formatting, have been removed for readability. The "\de" command is an alias for "^\circ", i.e. the degree symbol. See file table4.tex for the complete LaTeX markup of the field. -------------------------------------------------------------------------------- Byte-by-byte Description of file: table5.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 2 I2 --- Z Atomic Z-number of emitting element 3- 1X --- --- Blank 4- 5 A2 --- Ion Chemical symbol of emitting element 6- 1X --- --- Blank 7- 9 I3 --- N_II []? Number of lines observed from ionization stage II of element 10-12 I3 --- N_III []? Lines from ionization stage III 13-15 I3 --- N_IV []? Lines from ionization stage IV 16-18 I3 --- N_V []? Lines from ionization stage V 19-21 I3 --- N_VI []? Lines from ionization stage VI 22-24 I3 --- N_VII []? Lines from ionization stage VII 25-27 I3 --- N_VIII []? Lines from ionization stage VIII 28-30 I3 --- N_IX []? Lines from ionization stage IX 31-33 I3 --- N_X []? Lines from ionization stage X 34-36 I3 --- N_XI []? Lines from ionization stage XI 37-39 I3 --- N_XII []? Lines from ionization stage XII 40-42 I3 --- N_XIII []? Lines from ionization stage XIII 43-45 I3 --- N_XIV []? Lines from ionization stage XIV 46-48 I3 --- N_XV []? Lines from ionization stage XV 49-51 I3 --- N_XVI []? Lines from ionization stage XVI 52-54 I3 --- N_XVII []? Lines from ionization stage XVII 55-57 I3 --- N_XVIII []? Lines from ionization stage XVIII 58-60 I3 --- N_XIX []? Lines from ionization stage XIX 61-63 I3 --- N_XX []? Lines from ionization stage XX 64-66 I3 --- N_Total []? Total number of lines observed from all ions of given element -------------------------------------------------------------------------------- Byte-by-byte Description of file: table6.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 7 F7.3 0.1nm Lambda Measured line wavelength 8 A1 --- n_Lambda [s] s = all fields are interpreted as appearing in 2nd-order, otherwise they are in 1st-order 9-11 I3 0.1pm e_Lambda 1-sigma uncertainty in Lambda 12-18 F7.1 mW/m2/sr I Measured integrated line intensity 19-24 F6.1 mW/m2/sr e_I 1-sigma uncertainty in I 25-29 I5 0.1pm W Measured line full-width-half-maximum 30-33 I4 0.1pm e_W 1-sigma uncertainty in W -------------------------------------------------------------------------------- ================================================================================ (End) Lee Brotzman [ADS] 11-May-1994