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7. Instrument requirements Title: Science Case Reference: MUSE-MEM-SCI-052 Issue: 1.3 Date: 04/02/2004 Page: 95/100 Instrument requirements are summarized in Table 1. For each science subject we have identified the following requirements: • Field of view (FOV) importance (compared to a FOV reduced by a factor 2), quoted from 1(less important) to 3 (critical) • AO need, quoted from 0 to 3, with the following meaning: o 0 : no AO needed o 1 : AO is preferred but not absolutely requested o 2 : AO is mandatory to achieve full science but non-AO observations allow partial fulfilment of the science goals o 3 : AO is critical to science goals • Wavelength bandpass. Importance of the bandpass 8 is quoted from 1 (less important) to 3 (very important). Bandpass are defined according to MUSE spectral range: 0.465- 0.6 µm (B-V), 0.6-0.8 µm (V-I), 0.8-0.96 µm (I-z) • Importance of R=3000 spectral resolution (compared to R=1500), quoted from 1 (not important) to 3 (critical) Science Subject 9 FOV AO Wavelength Spec. Mode area B-V V-I I-z Resol. Gal. Form SF WFM 3 0 2 2 2 2 Gal. Form MDF WFM 3 1 2 2 3 2 Gal. Form DF WFM 3 3 2 2 3 3 Gal. Form UDF WFM 3 3 2 2 3 3 Near Gal. SBH NFM 1 3 2 1 3 2 Near Gal Kin. & Stel. Gal. WFM 2 2 3 2 1 2 Near Gal Inter. Gal. WFM 3 1 2 2 2 2 Near Gal Star. Form. WFM 2 2 2 3 1 2 Stars YSO WFM 2 2 1 3 1 3 Stars YSO NFM 2 3 1 3 1 3 Stars LMC WFM 3 0 3 2 2 3 Stars Mass. Stars/XPN WFM 3 2 3 2 1 3 Stars Globular cluster WFM 2 3 3 2 2 3 Solar Syst. Planets Atm. NFM 3 3 2 3 1 1 Solar Syst. Satellites/Aster. NFM 3 3 2 2 2 1 Table 1: Main instrument requirement relative to science goals 8 A bandpass is defined as less important if a decrease of 50% in throughput and/or image quality does not affect science feasibility. 9 SF, MDF, DF and UDF refer to shallow, medium deep, deep and ultra-deep fields. SBH is the supermassive black hole study, Kin & Stel. Gal. the kinematics and stellar populations in nearby galaxies, Inter. Gal. the interacting galaxies and Star. Form. the star formation. YSO is the early stage of stellar evolution, LMC the Large Magellanic Cloud, Mass. Stars/XPN the extragalactic massive stars and planetary nebulae. Planets Atm. are the planetary atmosphere and Aster. the asteroids.
Title: Science Case Reference: MUSE-MEM-SCI-052 Issue: 1.3 Date: 04/02/2004 Page: 96/100 Note that AO is by definition critical to NFM, whatever the science goals. We now provide some more detailed comments for each science area. 7.1. "Formation of galaxies" science case For surveys, the field of view is obviously critical. The AO requirements are related to the depth of the observations. While AO is not necessary for the shallow field (SF) and not mandatory for the medium deep field (MDF), it is critical to deep and ultra-deep fields in view of the limiting flux and spatial resolution goals. The whole MUSE wavelength range is important: for high z galaxies (z>5), the red spectral range is critical, but for the cosmic web measurements (z~3) and spatially resolved spectroscopy (z
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