通过ASTRO-F/AKARI观测探讨ERO的性质
Probing the Nature of EROs through ASTRO-F/AKARI observations
摘要：
我们提出了一个完整的样本的ASTRO-F数据的初步分析~150 ERO（R-K>5）下降到K（织女星）<19，可靠的光度红移是可用的，在0.8<z<2的范围内，选择了两个领域（S7和S2）的MUNICS调查。覆盖的面积约为420弧分^[2]。我们已经用AKARI望远镜在N3（3.4微米），N60（65微米）和WL（150微米）中对这一区域进行了成像，在N3滤波器中低至12 microJy，以检测其余帧H或K波段发射，从而提供了我们ERO的SED的出色采样。根据第一次分析，我们在N3过滤器中的识别率约为63%，高于S7字段。这些数据使我们能够区分星暴和被动早型现象，测量星暴分量的SFR和约束早型星系的质量组装。
英文摘要：
We present a preliminary analysis of ASTRO-F data of a complete sample of ~150 EROs (R-K>5) down to K(Vega)<19, for which reliable photometric redshifts are available, in the range 0.8<z<2, selected over two fields (S7 and S2) of the MUNICS survey. The area covered is about 420 arcmin^2. We have imaged this area with AKARI telescope in N3 (3.4 micron), N60 (65 micron) and WL (150 micron) down to 12 microJy in the N3 filter, in order to detect the rest frame H or K-band emission, thus providing an excellent sampling of the SED of our EROs. From a first analysis we have an identification rate of ~63% in the N3 filter over the S7 field. These data allow us to distinguish starburst from passive early type phenomena, to meseaure the SFR of the starburst component and to constrain the mass assembly of early type galaxies.
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