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A submillimeter exponential disk in M 51: Evidence for an extended cold dust disk

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Figure

Fig. 1. SCUBA calibrated and background-corrected 850 µm grey- grey-scale image of M 51 with 850 µm contour superimposed
Table 1. Galaxy parameters. M 51 Type a SAS(s)bcp Radio centre: RA (B1950) b 13 h 27 m 46.3 s Dec (B1950) b +47 ◦ 27  10  RA (J2000) b 13 h 29 m 52.7 s Dec (J2000) b +47 ◦ 11  42  V LSRc +464 km s −1 Inclination i c 20 ◦ Position angle P c 170 ◦ Dist
Table 2. Model results.
Fig. 6. The dust surface density profiles for a graphite and silicate ra- ra-tio of 0.5:0.5 and κ 850 = 1.2 g −1 cm 2 ; no CO contribution (solid line), 12 percent CO contribution (dotted line) and decreasing CO  contribu-tion (dashed line).

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