COSBO: The MAMBO 1.2 Millimeter Imaging Survey of the COSMOS Field
COSBO: The MAMBO 1.2 Millimeter Imaging Survey of the COSMOS Field
复制标题
DOI：
10.1086/520511
复制
发表时间：
2007-09
期刊：
影响因子：
--
通讯作者：
F. Bertoldi;C. Carilli;M. Aravena;E. Schinnerer;H. Voss;V. Smolčić;K. Jahnke;N. Scoville;A. Blain;K. Menten;D. Lutz;M. Brusa;Y. Taniguchi;P. Capak;B. Mobasher;S. Lilly;D. Thompson;H. Aussel;E. Kreysa;G. Hasinger;James E. Aguirre;J. Schlaerth;A. Koekemoer
中科院分区：
文献类型：
--
作者：
F. Bertoldi;C. Carilli;M. Aravena;E. Schinnerer;H. Voss;V. Smolčić;K. Jahnke;N. Scoville;A. Blain;K. Menten;D. Lutz;M. Brusa;Y. Taniguchi;P. Capak;B. Mobasher;S. Lilly;D. Thompson;H. Aussel;E. Kreysa;G. Hasinger;James E. Aguirre;J. Schlaerth;A. Koekemoer
在IRAM 30 m望远镜上使用Max-Planck毫米波测辐射热计阵列（MAMBO-2）在250 GHz（1.2 mm）下对COSMOS场的内部20 × 20 arcmin 2进行成像，每11“光束的均方根噪声水平约为1 mJy。我们探测到15个显著性在4 ~ 7 σ之间的源，其中11个也在1.4GHz处被探测到，VLA的通量密度大于24 μJy（3 σ）。我们确定了12个较低的意义毫米源的基础上，他们与微弱的射电源。我们提出的MAMBO源的多频识别，包括VLA无线电通量密度，光学和近红外识别，以及XMM牛顿X射线探测的两个毫米源。我们比较无线电和光学光度红移，并简要描述了宿主星系的形态。光学对应物的颜色表明它们中的大多数是高红移（z ~ 2-3）的恒星形成星系。至少有三个源出现在前景星系的透镜下。我们强调一些MAMBO来源，不显示明显的无线电同行。这些源可能是红移>3.5的尘埃星暴星系。COSMOS场的250 GHz源面密度与其他深mm场的源面密度相当。
The inner 20 × 20 arcmin2 of the COSMOS field was imaged at 250 GHz (1.2 mm) to an rms noise level of ~1 mJy per 11'' beam using the Max-Planck Millimeter Bolometer Array (MAMBO-2) at the IRAM 30 m telescope. We detect 15 sources at significance between 4 and 7 σ, 11 of which are also detected at 1.4 GHz with the VLA with a flux density >24 μJy (3 σ). We identify 12 more lower significance mm sources based on their association with faint radio sources. We present the multifrequency identifications of the MAMBO sources, including VLA radio flux densities, optical and near-infrared identifications, as well as the XMM-Newton X-ray detection for two of the mm sources. We compare radio and optical photometric redshifts and briefly describe the host galaxy morphologies. The colors of the identified optical counterparts suggest most of them to be high-redshift (z ~ 2-3) star-forming galaxies. At least three sources appear lensed by a foreground galaxy. We highlight some MAMBO sources that do not show obvious radio counterparts. These sources could be dusty starburst galaxies at redshifts >3.5. The 250 GHz source areal density in the COSMOS field is comparable to that seen in other deep mm fields.