论文标题
本地AGN调查（LASR）：I。星系样品，红外颜色选择和AGN的预测100 MPC
Local AGN Survey (LASr): I. Galaxy sample, infrared colour selection and predictions for AGN within 100 Mpc
论文作者
论文摘要
为了回答超级质量黑洞（SMBH）和Galaxy Evolution的一些主要开放问题，需要SMBH生长的完整人口普查，即主动银河核（AGN）。多亏了深度全天候的调查，例如宽场红外调查探险家（Wise）和Spectrum-Roentgen-Gamma（SRG）任务的调查，此任务现在在附近的宇宙中变得可行。在这里，我们提出了一项新的调查，即本地AGN调查（LASR），目的是确定AGN无偏见，并确定固有的Compton-Thick（CT）分数。首先，我们从天文学数据库中构建了100 MPC内最完整的全天空星系样本（LOG M_STAR/M_SUN〜9.4的90％完整性），比当前的两个Micron All-Sky All-Sky调查Redshift Survey（2MRS）深四倍，这是对已知的20％的Miss to to pollusius Agn的Miss。这49K星系是LASR的父样本，称为LASR-GPS。它包含4.3K已知的AGN，> =其中82％的估计为L（12UM）<10^42.3 ERG/s，即低亮度AGN。作为识别类似Seyfert的AGN的第一种方法，我们使用基于明智的红外颜色，在L（12UM）> = 10^42.3 ERG/s找到221个星系，以90％的可靠性托管AGN，其中包括61个新的AGN候选者和含义，并暗示50％至71％的光学2型2级。我们量化了该技术的效率，并用L_INT（2-10 keV）> = 10^42 ERG/s估计AGN总数为362^+145_-116（8.6^+3.5_-2.8 10^-5 MPC^-3）。 X射线亮度估计值表明CT分数为40-55％，以解释红外选定对象的迅速非检测。在100 MPC之内的AGN中有三分之一仍有待确定，我们讨论了Erosita AllSky调查的前景。
In order to answer some of the major open questions in the fields of supermassive black hole (SMBH) and galaxy evolution, a complete census of SMBH growth, i.e., active galactic nuclei (AGN), is required. Thanks to deep all-sky surveys, such as those by the Wide-field Infrared Survey Explorer (WISE) and the Spectrum-Roentgen-Gamma (SRG) missions, this task is now becoming feasible in the nearby Universe. Here, we present a new survey, the Local AGN Survey (LASr), with the goal of identifying AGN unbiased against obscuration and determining the intrinsic Compton-thick (CT) fraction. First, we construct the most complete all-sky sample of galaxies within 100 Mpc from astronomical databases (90% completeness for log M_star/M_sun ~9.4), four times deeper than the current local galaxy reference, the Two Micron All-Sky Survey Redshift Survey (2MRS), which turns out to miss 20% of known luminous AGN. These 49k galaxies serve as parent sample for LASr, called LASr-GPS. It contains 4.3k already known AGN, >=82% of these are estimated to have L(12um) < 10^42.3 erg/s, i.e., are low-luminosity AGN. As a first method for identifying Seyfert-like AGN, we use WISE-based infrared colours, finding 221 galaxies at L(12um) >= 10^42.3 erg/s to host an AGN at 90% reliability, This includes 61 new AGN candidates and implies and optical type 2 fraction of 50 to 71%. We quantify the efficiency of this technique and estimate the total number of AGN with L_int(2-10 keV) >= 10^42 erg/s in the volume to be 362^+145_-116 (8.6^+3.5_-2.8 10^-5 Mpc^-3). X-ray brightness estimates indicate the CT fraction to be 40-55% to explain the Swift non-detections of the infrared selected objects. One third of the AGN within 100 Mpc remain to be identified and we discuss the prospects for the eROSITA all-sky survey.
