Astronomy & Astrophysics

Table 1: Observational parameters, detection statistics and photometric results for each of the 6 ISOCAM rasters CE, CW, CS, D1, D2, D3. See Fig. 10 and text.
Table 4: The 20 Class I sources. $\Delta K$ and FWHM refers to measured variability 1995-1996 (Kaas 1999a) and extendedness in the K-band, respectively. K-band magnitudes from 1996 are found in Table 2.
Table 5: The 13 flat-spectrum sources. $\Delta K$ and FWHM refers to measured variability 1995-1996 (Kaas 1999a) and extendedness in the K-band, respectively. K-band magnitudes from 1996 are found in Table 2.
Table 6: The 43 ISOCAM YSOs found to be Class II sources or candidates. A hyphen for the SED indices means no detection at 14 $\mu$ m. A_K is the derived extinction in the K-band, and $L_{\star }$ is the stellar luminosity estimated as explained in Sect. 6. $\Delta K$ is the amplitude of the K-band variability 1995-1996 (Kaas 1999a). None of the sources for which Arnica K images were available was found to be extended in K.
Table 7: Five candidate Class III sources from Table 3. These are probably in the transition phase between Class II and III having some remaining IR excess. K-band magnitudes for two sources are obtained from Kaas et al. (1995).