we want to make a thorough survey of the taurus molecular cloud region in the literature frequently denoted as tmc2. this proposal takes virgul19h. the central position for our survey is ra (1950) = 04 30 00 dec(1950) = 24 17 00 the area to be surveyed is of order 30.x50. in raxdec. this region contains dark cloud b18 and several iras 12 micron sources of which the brightest is of order 2 jy. >from the analysis of the first pht observations we propose to observe the cloud in several ir bands and not only in 2 (c_100 and c_200 in isdust8, and isdust13) as is done presently in the isdust proposal by lemke et al for an other cloud in taurus (tmc1). by only having the 100/200 micron brightness ratio it is sufficient to determine actual dust temperatures, and hence accurate (dust) column densities. in addition we would like to make an unbiased pht-s survey of all iras pointsources in the region to be mapped with pht-c. the usefullness of cam for studying star formination regions was recently best demonstrated by the rho orph image. here we will use cam to map the same are of the tmc2 as the pht c observations but at 6.75 and 11.4 micron (filters: lw2, lw8). detailed iras studies of this area have revealed that the largely enhanced spatial resolution of isocam is necessay to study accurately the luminosity function. this project is carefully selected against what we learned from the iras mission about what is nesseary to derive a more complete understanding of low mass star formation. there is no clash with existing other gt measurements. this cloud is not blocked by any of the other guaranteed time programmes. we have contacted k. mattila to ensure that there was no duplication with existing (pht and cam guaranteed time) cloud mapping programs and to consolidate the centre position.
Instrument
CAM01 , PHT22
Temporal Coverage
1997-09-15T03:40:47Z/1998-03-21T23:47:34Z
Version
1.0
Mission Description
The Infrared Space Observatory (ISO) was the world's first true orbiting infrared observatory. Equipped with four highly-sophisticated and versatile scientific instruments, it was launched by Ariane in November 1995 and provided astronomers world-wide with a facility of unprecedented sensitivity and capabilities for a detailed exploration of the Universe at infrared wavelengths.
