Volume 518, July-August 2010
Herschel: the first science highlights
|Number of page(s)
|16 July 2010
Full submillimeter maps. Left: SABOCA, displayed at the original resolution of 7 8; right: LABOCA. Protostars in the field are labeled with their HOPS designations. For both maps a logarithmic color scale is used.
|Open with DEXTER
Table B.1: PANIC NGC 1999 near-IR colors of background stars.
Five faint stars are visible in the PANIC H and 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 color was used to estimate the extinction AV toward the stars. We assumed an intrinsic color of 0.17, derived as the median 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 excess into K-band extinction AK, from which we obtained the optical extinction as , 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).
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.