标题： 震惊的后星暴星系调查 II：SPOGs 一部分的分子气体含量和特性 显示英文标题

标题： Shocked POststarburst Galaxy Survey II: The Molecular Gas Content and Properties of a Subset of SPOGs

摘要： 我们展示了利用射电天文毫米波研究所（IRAM）30米单天线和毫米波天文研究联合阵列（CARMA）干涉仪对受冲击的后超新星爆发星系调查中的天体进行的CO(1-0)观测。受冲击的后超新星爆发星系（SPOGs）代表了一类过渡性的星系，具有深的巴尔末吸收（Hdelta>5A），与中等年龄（A型星）的恒星种群一致，并且电离气体线比率与纯恒星形成不一致。CO(1-0)子样本是从由广域红外巡天探测器检测到的SPOGs中选取的，这些SPOGs在22微米波段的信号噪声比（S/N）大于3。在观测的52个物体中，有47个被检测到S/N大于3。我们的CO-SPOG样本中很大一部分（37-46%）被视觉分类为形态上受到破坏的。检测到的H2质量在10^(8.7-10.8)太阳质量之间，与正常星系中的气体质量一致，但大约比后超新星爆发星系中看到的范围大一个数量级。在比较22微米和CO(1-0)通量时，SPOGs偏离了正常的恒星形成关系，其22微米通量超出因子<EMIR,SPOG>=4.91+0.42-0.39。CO-SPOGs的Na I D特征表明，这些天体很可能拥有星际风。具有较大Na I D增强的天体也倾向于在无线电波段发射，这表明可能由活动星系核驱动中性风。 显示英文摘要

摘要： We present CO(1-0) observations of objects within the Shocked POststarburst Galaxy Survey taken with the Institut de Radioastronomie Millimetrique (IRAM) 30m single dish and the Combined Array for Research for Millimeter Astronomy (CARMA) interferometer. Shocked Poststarburst Galaxies (SPOGs) represent a transitioning population of galaxies, with deep Balmer absorption (Hdelta>5A), consistent with an intermediate-age (A-star) stellar population, and ionized gas line ratios inconsistent with pure star formation. The CO(1-0) subsample was selected from SPOGs detected by the Wide-field Infrared Survey Explorer with 22um flux detected at a signal-to-noise (S/N)>3. Of the 52 objects observed in CO(1-0), 47 are detected with S/N>3. A large fraction (37-46%) of our CO-SPOG sample were visually classified as morphologically disrupted. The H2 masses detected were between 10^(8.7-10.8) Msuns, consistent with the gas masses found in normal galaxies, though approximately an order of magnitude larger than the range seen in poststarburst galaxies. When comparing the 22um and CO(1-0) fluxes, SPOGs diverge from the normal star-forming relation, having 22um fluxes in excess by a factor of <EMIR,SPOG>=4.91+0.42-0.39. The Na I D characteristics of CO-SPOGs show that it is likely that many of these objects host interstellar winds. Objects with the large Na I D enhancements also tend to emit in the radio, suggesting possible AGN-driving of neutral winds.