DIRBE减去2个质量：在40个新区域中以2.2和3.5微米对CIRB进行重新定位
DIRBE Minus 2MASS: Confirming the CIRB in 40 New Regions at 2.2 and 3.5 Microns
摘要：
随着2 MASS全天点源星表的发布，2 MASS的恒星通量被用来从DIRBE测量的40个新区域的北银河和南银河极冠的强度中去除银河系恒星的贡献。在减去行星际和银河系前景后，发现在2.2微米处的一致剩余强度为14.69 +/- 4.49 kJy/sr。考虑到DIRBE 3.5微米和2 MASS 2.2微米通量之间的恒定校准因子，类似的分析在3.5微米处留下15.62 +/- 3.34 kJy/sr的剩余强度。在1.25微米处DIRBE减去2 MASS相关性的截距显示出更多的散射，并且是前景的较小部分，导致CIRB的8.88 +/- 6.26 kJy/sr（1 sigma）的仍然较弱的限制。
英文摘要：
With the release of the 2MASS All-Sky Point Source Catalog, stellar fluxes from 2MASS are used to remove the contribution due to Galactic stars from the intensity measured by DIRBE in 40 new regions in the North and South Galactic polar caps. After subtracting the interplanetary and Galactic foregrounds, a consistent residual intensity of 14.69 +/- 4.49 kJy/sr at 2.2 microns is found. Allowing for a constant calibration factor between the DIRBE 3.5 microns and the 2MASS 2.2 microns fluxes, a similar analysis leaves a residual intensity of 15.62 +/- 3.34 kJy/sr at 3.5 microns. The intercepts of the DIRBE minus 2MASS correlation at 1.25 microns show more scatter and are a smaller fraction of the foreground, leading to a still weak limit on the CIRB of 8.88 +/- 6.26 kJy/sr (1 sigma).
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