Volume 518, July-August 2010
Herschel: the first science highlights
Article Number L94
Number of page(s) 5
Section Letters
Published online 16 July 2010

Online Material

Appendix A: SABOCA and LABOCA submillimeter maps

\end{figure} Figure A.1:

Full submillimeter maps. Left: SABOCA, displayed at the original resolution of 7 $.\!\!^{\prime\prime}$8; right: LABOCA. Protostars in the field are labeled with their HOPS designations. For both maps a logarithmic color scale is used.

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Appendix B: PANIC H and K $_{\rm\sf s}$ photometry

Table B.1:   PANIC NGC 1999 near-IR colors of background stars.

Five faint stars are visible in the PANIC H and $K_{\rm s}$ images. Their positions and photometry are listed in Table B.1. Photometric calibration was performed with 2MASS[*] photometry of comparison fields containing 20 2MASS sources and verified with a 2MASS star in the science field. Photometry was conducted with the IRAF task apphot.

The measured $(H - K_{\rm S})$ color was used to estimate the extinction AV toward the stars. We assumed an intrinsic $(H - K_{\rm S})$ color of 0.17, derived as the median $(H - K_{\rm S})$ colors of stars in an unreddened control field near Orion (Megeath et al., in prep). We adopted the reddening law of Indebetouw et al. (2005) to convert $(H - K_{\rm S})$ excess into K-band extinction AK, from which we obtained the optical extinction as $A_V = 8 \times A_K$, corresponding to a total to selective extinction RV between the diffuse ISM value of 3.1 and the higher values (up to 5) found for dense clouds (e.g. Campeggio et al. 2007).

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