<=== observer ===> "MUIZON",\ "Jourdain de Muizon, M.",\ "Leiden Observatory",\ "P.O. Box 9513",\ "",\ "",\ "2300 RA",\ "Leiden",\ "The Netherlands",\ " 31 71 275845",\ " 31 71 275835",\ "muizon@strw.LeidenUniv.nl" <=== proposal ===> "MMDUSTY2",1,2,\ {"dust properties","molecular clouds"},\ {"L.B.d'Hendecourt","F.Boulanger","J.-L.Puget","P.Ehrenfreund","H.J.Habing"} <=== title ===> Solid State Infrared Spectroscopy with ISO, PART 2. <=== abstract ===> SCIENTIFIC ABSTRACT ISO will provide for the first time the possibility to study interstellar dust over a large and continuous spectroscopic window (2.5P180 micron) with a resolution well suited for the study of solid state features arising from interstellar grains. By using the PHOT-S, and SWS instruments, we propose to take advantage of the full wavelength coverage to obtain a coherent set of informations on the chemical and physical nature of interstellar dust grains in molecular clouds and on PAH molecules in selected sources. Basically, three kinds of studies are proposed here: (i) spectroscopy of infrared sources embedded in molecular clouds with emphasis on volatile ices, (ii) low resolution spectroscopy of a statistically significant number of IRAS point sources located behind nearby molecular clouds, and (iii) spectroscopy of selected point like sources revealing some strong PAH features in the mid-infrared. The first two items refer to absorption spectroscopy and are mainly devoted to the problem of gas-grains interactions in the chemistry of molecular clouds. The third one is an emission spectroscopy study to provide, as far as possible, examples of complete spectral coverage of PAH emission in a few objects. This proposal is strongly coupled to laboratory experiments currently under development. OBSERVATION SUMMARY Most bands occuring in the solid state are broad and therefore a medium spectral resolution will be sufficient in most cases. Higher resolution will be required only for minor species and to separate blend of lines expected from complex mixtures to allow a finer interpretation of chemical process in interstellar grains. Also a very high signal-to-noise ratio is required in a few objects in order to measure potentially significant but minor species, which transitions occur at specific wavelengths. The strategy is: (i) to obtain complete SWS spectra from 2.5 to 45 micron (AOT SWS01), with a typical S/N of 30 except at the lower wavelengths, of a number of sources carefully selected on their IRAS-LRS spectra and other data when available. (ii) These sources need also to be observed with PHOT-S (AOT PHT40) because SWS will not be sensitive enough below 6 micron in these heavily obscured sources. This is why we request concatenation of PHOT-S ans SWS observations of each source that we observe with the two instruments. (iii) For a subset of these sources we will also obtain grating scans (AOT SWS06) of the following ranges with the corresponding S/N: 2.38-2.82 (S/N>20), 3.3-3.35 (S/N>20), 3.9-4.6 (S/N>50), 5.3-5.6 (S/N=100), 5.6-6.0 (S/N=100), 6.3-6.5 (S/N=1000), 6.5-6.9 (S/N=100), 7.5-7.8 (S/N=100), 9.4-9.8 (S/N=100), 14.5-16.5 (S/N=300). (iv) A similar strategy (AOT's SWS01 and PHT40) applies to a sample of 5 emission sources (PAHs). (v) Background sources toward nearby molecular clouds (Ophiucus, Taurus and Chamaeleon) will be measured with PHOT-S (AOT PHT40) in order to trace the variations in the dust properties across the cloud and in particular in regions far from the heating sources. Strong variations in the far-infrared emission have been evidenced by the IRAS data. A spectroscopic study would be very informative to address this problem. For this study it is necessary to obtain as many spectra as possible for a good sampling across the cloud; thus, we ask for concatenated observations of sources located in directions close to each other. <=== scientific_justification ===> Time distribution for autumn launch targets: Team top 40% second 30% last 30% HJH : 0 1887 7842 JLP : 0 5400 5400 total : 0 7287 13242 Time distribution for spring launch targets: Team top 40% second 30% last 30% HJH : 0 2873 8815 JLP : 0 5400 5400 total : 0 8273 14215 <=== autumn_launch_targets ===> 1, "PHT40", 2.0,"N","10471-7530 BKG1 ", 10.806814,-75.77229,2000,0.,0.,493,2 2, "PHT40", 2.0,"N","10558-7449 BKG5 ", 10.954375,-75.09977,2000,0.,0.,333,3 3, "PHT40", 2.0,"N","11036-7536 BKG11 ", 11.085753,-75.88458,2000,0.,0.,333,0 4, "PHT40", 3.0,"N","10556-7338 BKG4 ", 10.951764,-73.91785,2000,0.,0.,493,5 5, "PHT40", 3.0,"N","11010-7352 BKG10 ", 11.044333,-74.14870,2000,0.,0.,333,0 6, "PHT40", 2.0,"N","11172-7533 BKG16 ", 11.317733,-75.82483,2000,0.,0.,493,7 7, "PHT40", 2.0,"N","11212-7626 BKG17 ", 11.384228,-76.71771,2000,0.,0.,333,0 8, "PHT40", 3.0,"N","11263-7426 BKG21 ", 11.471797,-74.71942,2000,0.,0.,493,9 9, "PHT40", 3.0,"N","11284-7419 BKG24 ", 11.507956,-74.60870,2000,0.,0.,333,10 10,"PHT40", 3.0,"N","11273-7414 CHAM32 ", 11.489242,-74.52377,2000,0.,0.,333,0 11,"PHT40", 3.0,"N","11158-7610 BKG83 ", 11.292017,-76.45213,2000,0.,0.,493,12 12,"PHT40", 3.0,"N","11142-7612 CHAM22 ", 11.266025,-76.48567,2000,0.,0.,333,13 13,"PHT40", 3.0,"N","11312-7616 CHAM78 ", 11.554506,-76.55931,2000,0.,0.,333,0 14,"PHT40", 3.0,"N","10564-7514 CHAM14 ", 10.964669,-75.51486,2000,0.,0.,493,15 15,"PHT40", 3.0,"N","10552-7424 CHAM18 ", 10.944794,-74.67565,2000,0.,0.,333,16 16,"PHT40", 3.0,"N","11123-7509 CHAM21 ", 11.234133,-75.42582,2000,0.,0.,333,0 17,"PHT40", 3.0,"N","10516-7917 CHAM51 ", 10.874608,-79.55947,2000,0.,0.,493,18 18,"PHT40", 3.0,"N","10428-7756 CHAM53 ", 10.728208,-78.20854,2000,0.,0.,333,19 19,"PHT40", 3.0,"N","11032-7917 CHAM60 ", 11.072428,-79.55704,2000,0.,0.,333,0 20,"PHT40", 2.0,"N","11214-8146 CHAM90 ", 11.378803,-82.05710,2000,0.,0.,493,21 21,"PHT40", 2.0,"N","11262-8147 CHAM91 ", 11.461225,-82.06275,2000,0.,0.,333,22 22,"PHT40", 2.0,"N","11336-8134 CHAM92 ", 11.589794,-81.84744,2000,0.,0.,333,0 23,"PHT40", 3.0,"N","11363-7943 CHAM93 ", 11.639375,-80.00361,2000,0.,0.,493,24 24,"PHT40", 3.0,"N","11584-7929 CHAM94 ", 12.016564,-79.76677,2000,0.,0.,333,0 25,"PHT40", 3.0,"N","16167-2317 BKG26 ", 16.328208,-23.40756,2000,0.,0.,493,26 26,"PHT40", 3.0,"N","16168-2358 BKG27 ", 16.331347,-24.09117,2000,0.,0.,333,27 27,"PHT40", 3.0,"N","16176-2403 BKG28 ", 16.343941,-24.16934,2000,0.,0.,333,28 28,"PHT40", 3.0,"N","16177-2343 BKG29 ", 16.345678,-23.84494,2000,0.,0.,333,0 29,"PHT40", 3.0,"N","16154-2557 BKG25 ", 16.307953,-26.07264,2000,0.,0.,493,30 30,"PHT40", 3.0,"N","16188-2555 BKG31 ", 16.365317,-26.04799,2000,0.,0.,333,0 31,"PHT40", 2.0,"N","16230-2436 BKG38 ", 16.434889,-24.71508,2000,0.,0.,493,32 32,"PHT40", 2.0,"N","16202-2432 BKG34 ", 16.387231,-24.65568,2000,0.,0.,333,33 33,"PHT40", 2.0,"N","16193-2334 BKG33 ", 16.373139,-23.69586,2000,0.,0.,333,34 34,"PHT40", 2.0,"N","16203-2321 BKG35 ", 16.389458,-23.46707,2000,0.,0.,333,0 35,"PHT40", 2.0,"N","16262-2545 BKG42 ", 16.488444,-25.86944,2000,0.,0.,493,36 36,"PHT40", 2.0,"N","16244-2522 BKG39 ", 16.458722,-25.49361,2000,0.,0.,333,37 37,"PHT40", 2.0,"N","16255-2505 BKG40 ", 16.476250,-25.19833,2000,0.,0.,333,0 38,"PHT40", 3.0,"N","16261-2224 BKG41 ", 16.485556,-22.52530,2000,0.,0.,493,0 39,"PHT40", 3.0,"N","16265-2343 BKG43 ", 16.493756,-23.83547,2000,0.,0.,493,40 40,"PHT40", 3.0,"N","16287-2337 BKG46 ", 16.529028,-23.73194,2000,0.,0.,333,41 41,"PHT40", 3.0,"N","16316-2418 BKG51 ", 16.578083,-24.40694,2000,0.,0.,333,42 42,"PHT40", 3.0,"N","16281-2433 BKG44 ", 16.519750,-24.66028,2000,0.,0.,333,0 43,"PHT40", 3.0,"N","16321-2622 BKG52 ", 16.587550,-26.47832,2000,0.,0.,493,44 44,"PHT40", 3.0,"N","16343-2558 BKG55 ", 16.623108,-26.07111,2000,0.,0.,333,45 45,"PHT40", 3.0,"N","16321-2512 BKG53 ", 16.586333,-25.30833,2000,0.,0.,333,46 46,"PHT40", 3.0,"N","16324-2450 BKG54 ", 16.591303,-24.94672,2000,0.,0.,333,0 47,"PHT40", 2.0,"N","16372-2510 BKG59 ", 16.672228,-25.27056,2000,0.,0.,493,48 48,"PHT40", 2.0,"N","16364-2449 BKG57 ", 16.657803,-24.92169,2000,0.,0.,333,49 49,"PHT40", 2.0,"N","16382-2453 BKG60 ", 16.688772,-24.98939,2000,0.,0.,333,50 50,"PHT40", 2.0,"N","16396-2440 BKG62 ", 16.711764,-24.76368,2000,0.,0.,333,0 51,"PHT40", 3.0,"N","16420-2346 BKG65 ", 16.750583,-23.86889,2000,0.,0.,493,52 52,"PHT40", 3.0,"N","16384-2334 BKG61 ", 16.691178,-23.67569,2000,0.,0.,333,53 53,"PHT40", 3.0,"N","16368-2400 BKG58 ", 16.664028,-24.10178,2000,0.,0.,333,0 <=== spring_launch_targets ===> 1, "PHT40", 2.0,"N","10471-7530 BKG1 ", 10.806814,-75.77229,2000,0.,0.,493,2 2, "PHT40", 2.0,"N","10558-7449 BKG5 ", 10.954375,-75.09977,2000,0.,0.,333,3 3, "PHT40", 2.0,"N","11036-7536 BKG11 ", 11.085753,-75.88458,2000,0.,0.,333,0 4, "PHT40", 3.0,"N","10556-7338 BKG4 ", 10.951764,-73.91785,2000,0.,0.,493,5 5, "PHT40", 3.0,"N","11010-7352 BKG10 ", 11.044333,-74.14870,2000,0.,0.,333,0 6, "PHT40", 2.0,"N","11172-7533 BKG16 ", 11.317733,-75.82483,2000,0.,0.,493,7 7, "PHT40", 2.0,"N","11212-7626 BKG17 ", 11.384228,-76.71771,2000,0.,0.,333,0 8, "PHT40", 3.0,"N","11263-7426 BKG21 ", 11.471797,-74.71942,2000,0.,0.,493,9 9, "PHT40", 3.0,"N","11284-7419 BKG24 ", 11.507956,-74.60870,2000,0.,0.,333,10 10,"PHT40", 3.0,"N","11273-7414 CHAM32 ", 11.489242,-74.52377,2000,0.,0.,333,0 11,"PHT40", 3.0,"N","11158-7610 BKG83 ", 11.292017,-76.45213,2000,0.,0.,493,12 12,"PHT40", 3.0,"N","11142-7612 CHAM22 ", 11.266025,-76.48567,2000,0.,0.,333,13 13,"PHT40", 3.0,"N","11312-7616 CHAM78 ", 11.554506,-76.55931,2000,0.,0.,333,0 14,"PHT40", 3.0,"N","10564-7514 CHAM14 ", 10.964669,-75.51486,2000,0.,0.,493,15 15,"PHT40", 3.0,"N","10552-7424 CHAM18 ", 10.944794,-74.67565,2000,0.,0.,333,16 16,"PHT40", 3.0,"N","11123-7509 CHAM21 ", 11.234133,-75.42582,2000,0.,0.,333,0 17,"PHT40", 3.0,"N","10516-7917 CHAM51 ", 10.874608,-79.55947,2000,0.,0.,493,18 18,"PHT40", 3.0,"N","10428-7756 CHAM53 ", 10.728208,-78.20854,2000,0.,0.,333,19 19,"PHT40", 3.0,"N","11032-7917 CHAM60 ", 11.072428,-79.55704,2000,0.,0.,333,0 20,"PHT40", 2.0,"N","11214-8146 CHAM90 ", 11.378803,-82.05710,2000,0.,0.,493,21 21,"PHT40", 2.0,"N","11262-8147 CHAM91 ", 11.461225,-82.06275,2000,0.,0.,333,22 22,"PHT40", 2.0,"N","11336-8134 CHAM92 ", 11.589794,-81.84744,2000,0.,0.,333,0 23,"PHT40", 3.0,"N","11363-7943 CHAM93 ", 11.639375,-80.00361,2000,0.,0.,493,24 24,"PHT40", 3.0,"N","11584-7929 CHAM94 ", 12.016564,-79.76677,2000,0.,0.,333,0 25,"PHT40", 2.0,"N","04298+1849 TAUR6 ", 4.546683,+18.93538,2000,0.,0.,493,26 26,"PHT40", 2.0,"N","04321+1705 TAUR8 ", 4.583989,+17.20100,2000,0.,0.,333,27 27,"PHT40", 2.0,"N","04343+1811 TAUR9 ", 4.621533,+18.29794,2000,0.,0.,333,0 28,"PHT40", 2.0,"N","04397+1848 TAUR10 ", 4.711747,+18.89693,2000,0.,0.,493,29 29,"PHT40", 2.0,"N","04400+1713 TAUR11 ", 4.716242,+17.31108,2000,0.,0.,333,30 30,"PHT40", 2.0,"N","04410+1752 TAUR12 ", 4.733175,+17.96408,2000,0.,0.,333,0 31,"PHT40", 3.0,"N","04431+1842 TAUR13 ", 4.768075,+18.80072,2000,0.,0.,493,32 32,"PHT40", 3.0,"N","04439+1802 TAUR17 ", 4.781350,+18.13878,2000,0.,0.,333,0 33,"PHT40", 2.0,"N","04207+2250 TAUR19 ", 4.395597,+22.96484,2000,0.,0.,493,34 34,"PHT40", 2.0,"N","04215+2258 TAUR20 ", 4.408069,+23.09000,2000,0.,0.,333,35 35,"PHT40", 2.0,"N","04223+2229 TAUR21 ", 4.422150,+22.59743,2000,0.,0.,333,0 36,"PHT40", 3.0,"N","04226+2547 TAUR24 ", 4.429028,+25.89755,2000,0.,0.,493,37 37,"PHT40", 3.0,"N","04228+2527 TAUR25 ", 4.431761,+25.57207,2000,0.,0.,333,0 38,"PHT40", 2.0,"N","04253+2400 TAUR30 ", 4.472269,+24.11763,2000,0.,0.,493,0 39,"PHT40", 3.0,"N","04248+2214 TAUR28 ", 4.463244,+22.35553,2000,0.,0.,493,40 40,"PHT40", 3.0,"N","04270+2209 TAUR33 ", 4.500814,+22.27041,2000,0.,0.,333,41 41,"PHT40", 3.0,"N","04317+2216 TAUR37 ", 4.578147,+22.38099,2000,0.,0.,333,0 42,"PHT40", 3.0,"N","04300+2542 TAUR36 ", 4.552139,+25.81828,2000,0.,0.,493,43 43,"PHT40", 3.0,"N","04343+2537 TAUR38 ", 4.623506,+25.72730,2000,0.,0.,333,0 44,"PHT40", 3.0,"N","04370+2356 TAUR41 ", 4.668636,+24.03414,2000,0.,0.,493,45 45,"PHT40", 2.0,"N","04402+2450 TAUR46 ", 4.721197,+24.93019,2000,0.,0.,333,0 46,"PHT40", 3.0,"N","04387+2238 TAUR44 ", 4.695372,+22.73150,2000,0.,0.,493,47 47,"PHT40", 3.0,"N","04448+2203 TAUR51 ", 4.796628,+22.13975,2000,0.,0.,333,0 48,"PHT40", 2.0,"N","04409+2514 TAUR47 ", 4.733800,+25.33715,2000,0.,0.,493,49 49,"PHT40", 2.0,"N","04439+2531 TAUR50 ", 4.783139,+25.61583,2000,0.,0.,333,0 50,"PHT40", 3.0,"N","04162+1802 TAUR53 ", 4.317997,+18.15803,2000,0.,0.,493,51 51,"PHT40", 3.0,"N","04173+1802 TAUR54 ", 4.337969,+18.16216,2000,0.,0.,333,0 52,"PHT40", 3.0,"N","04236+1702 TAUR57 ", 4.442019,+17.15500,2000,0.,0.,493,0 53,"PHT40", 3.0,"N","04328+1842 TAUR58 ", 4.596764,+18.80358,2000,0.,0.,493,54 54,"PHT40", 3.0,"N","04336+1749 TAUR59 ", 4.608559,+17.93244,2000,0.,0.,333,55 55,"PHT40", 3.0,"N","04343+1826 TAUR60 ", 4.620769,+18.54287,2000,0.,0.,333,0 56,"PHT40", 3.0,"N","11245-7312 BKG19 ", 11.441961,-73.48775,2000,0.,0.,493,0