PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT NOTE = "AAREADME file for IUE Data Set Volume Version 2 of this volume includes minor format corrections to the target catalog files. " PUBLICATION_DATE = 2007-07-30 END_OBJECT = TEXT END ***** File AAREADME.TXT Two groups of data (HIGH and LOW dispersion) are included in this volume. The data are SWP measurements of 37 comets observed by IUE. Added information is included from the Uniform Low Dispersion Archive Guide No. 2 (ESA SP1134), such as a General List of comet observations from 1978-1989. The data files were collected from IUEMAST. A FITS to PDS translator (F2P) has been used to create the detached PDS labels. The data were checked by manipulating the data with IDL routines created at the Small Bodies Node. In the DOCUMENT directory are explanatory text files as well as digitized versions (1&2) of the manuals in TEX or ASCII text with figures as JPG files. All document files and most labels contain an 80-byte fixed length record, with a carriage return (ASCII 13) and line feed (ASCII 10) as the 79th and 80th byte respectively. All the tabular files in the INDEX and DOCUMENT directory are formatted according to PDS standards. It should be noted that the index tables are formatted so that they may be read directly into many database management systems. All fields are separated by commas, and character fields are inclosed in double quotes ("). 49 comets were observed by the IUE during the period. Of these, 37 were observed using the LWP. The cpmplete list of comets is shown below, with the SWP comets marked by an asterisk (*): COMET IAU DESIG * AREND-RIGAUX 1951_C2 * AUSTIN 82 1982_M1 * AUSTIN 90 1989_X1 * BORRELLY 81-| * BORRELLY 87-|-----------------------------------1904_Y2 BORRELLY 94-| * BOWELL 1980_E1 * BRADFIELD 79X 1979_Y1 * BRADFIELD 87 1987_P1 * BRORSEN-METCALF 1847_O1 CERNIS 1983_O1 * CHURYUMOV-GERASIMENKO 1969_R1 * CROMMELIN 1928_W1 * D'ARREST 82-------------------------------------1851_M1 D'ARREST 95----| * ENCKE 80-| * ENCKE 84-| ENCKE 87-|--------------------------------------1818_W1 * ENCKE 90-| ENCKE 94-| FAYE 91 1843_W1 * GIACOBINI-ZINNER 1900_Y1 * GRIGG-SKJELLERUP 1922_K1 HALE-BOPP 1995_O1 * HALLEY 1682_Q1 * HARTLEY-GOOD 1985_R1 HONDA-MRKOS-PAJDUSAKOVA 1948_X1 * HYAKUTAKE 1996_B2 * ICHIMURA 1987_W1 * IRAS-ARAKI-ALCOCK 1983_H1 * KOPFF 1906_Q1 * LEVY 1991_L3 LEVY-RUDENKO 1984_V1 MACHHOLZ 2 1994_P1A * MCNAUGHT 1987_U3 * MCNAUGHT-RUSSELL 1994_X1 * MEIER 80 1980_V1 METCALF-BREWINGTON 1906_V2 * NISHIKAWA-TAKAMIZAWA-TAGO 1987_B1 * OKAZAKI-LEVY-RUDENKO 1989_Q1 * PANTHER 1980_Y2 PONS-WINNECKE 1858_E1 * SCHAUMASSE 1911_X1 * SCHWASSMANN-WACHMANN 1 1927_V1 * SEARGENT 1978_T1 * SHOEMAKER-LEVY 1991_T2 * STEPHAN-OTERMA 1942_V1 SUGANO-SAIGUSA-FUJIKAWA 1983_J1 * SWIFT-TUTTLE 1862_O1 TAKAMIZAWA 1984_O1 TEMPEL 1 1867_G1 * TEMPEL 2 1873_N1 * TUTTLE 1858_A1 * WILSON 1986_P1 YANAKA 1989_A1 * ZANOTTA-BREWINGTON 1991_Y1 An outline of the CD-ROM is shown in the table below: AAREADME.TXT Short introduction to CDROM contents VOLDESC.CAT Description of files on volume /CATALOG/*.CAT Mission, host, instrument, data set, & ref **************************************************************************** *DS - abbreviation for data set, used in filename for catalog *HOST - spacecraft or observatory (institution) that supports a mission *IN - abbreviation for instrument, used in filename for catalog *MSN - abbreviation for mission, used in filename for catalog REF - reference list as a catalog file ************************************************************************* /DOCUMENT/*.ASC,*.JPG,*.TEX Manuals and other information /OBSERVATION_LOG/*.ASC,*.JPG Digitized log pages for comet data /IUECAL/*.ASC,*.FIT Sensitivity calibration for archive /ULDA/*.ASC,*.JPG,*.TAB Uniform Low Dispersion Archive Guide No. 2 /EPHEM/*.ASC Ephemeris files for selected comets /INDEX/*.TAB Indexes by experiment or volume /DATA/HIGH/YYYY_CC/YEAR/INS/FILE/*.FIT High dispersion, year dir. optional /DATA/LOW/YYYY_CC/YEAR/INS/FILE/*.FIT Low dispersion, year dir. optional [YYYY_CC = IAU comet designation, see correspondence table given above INS = LWP,LWR,SWP FILE (Low) = MXLO,SILO,INES File (High) = MXHI, SIHI] Three forms of data may be included. The extracted spectra as binary tables (INES), resampled images (SILO, SIHI), and raw spectra (MXLO, MXHI). After data reached the Small Bodies Node, some file names were changed to meet ISO standards. The original files came in FITS format in the form filename.ines or filename.silo (sihi, mxlo, mxhi). As the new filenames had to end in the extension "FIT" then FITS became FIT, or for SILO (SIHI, MXLO, MXHI) the first characters of the old extension were used to replace the second two characters of the file name; thus SILO (MXLO, SIHI, MXHI) files could end in "FIT" and still be unique. For example: SWP12345.SILO -> SSI12345.FIT SWP12345.MXLO -> SMX12345.FIT The same holds true for LWP and LWR data. Small Bodies Node Department of Astronomy, University of Maryland College Park, MD 20742-2421 e-mail to pdssbn.astro.umd.edu; URL-http://pdssbn.astro.umd.edu