ULTRALUMINOUS INFRARED GALAXIES IN THE AKARI ALL-SKY SURVEY
ULTRALUMINOUS INFRARED GALAXIES IN THE AKARI ALL-SKY SURVEY
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DOI：
10.1088/0004-637x/797/1/54
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发表时间：
2014-10
期刊：
影响因子：
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通讯作者：
E. Eser;T. Goto;Y. Doi
中科院分区：
文献类型：
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作者：
E. Eser;T. Goto;Y. Doi
我们提出了一个新的目录的118个超亮红外星系（ULIRGs）和超亮红外星系（HLIRG）交叉匹配的AKARI全天空调查与斯隆数字巡天数据发布10（SDSS DR 10）和最终数据发布的2度场星系红移调查。40个ULIRG和1个HLIRG是新鉴定的。我们发现ULIRGs是相互作用的对星系或正在进行或后合并。这与广泛接受的观点一致：ULIRGs是盘星系的主要合并。我们证实了以前已知的积极的趋势之间的活动星系核分数和红外光度。我们发现，ULIRGs有一个大的偏移距的主序列到z <$1，他们的偏移距z <$2“主序列”是相对较小的。我们发现一个与以前的研究结果一致的结果表明，与类似质量的本地恒星形成SDSS星系相比，本地ULIRGs具有较低的氧丰度。我们首次证明了ULIRGs遵循基本金属丰度关系（FMR）。FMR周围ULIRG的散射（0.09 dex-0.5 dex）与z ≥ 2-3星系的散射相当。我们提供最大的本地（0.050
We present a new catalog of 118 ultraluminous infrared galaxies (ULIRGs) and one hyperluminous infrared galaxy (HLIRG) by cross-matching the AKARI all-sky survey with the Sloan Digital Sky Survey Data Release 10 (SDSS DR10) and the final data release of the Two-Degree Field Galaxy Redshift Survey. Forty of the ULIRGs and one HLIRG are new identifications. We find that ULIRGs are interacting pair galaxies or ongoing or postmergers. This is consistent with the widely accepted view: ULIRGs are major mergers of disk galaxies. We confirm the previously known positive trend between the active galactic nucleus fraction and infrared luminosity. We show that ULIRGs have a large offset from the main sequence up to z ∼ 1; their offset from the z ∼ 2 “main sequence” is relatively smaller. We find a result consistent with the previous studies showing that, compared to local star-forming SDSS galaxies of similar mass, local ULIRGs have lower oxygen abundances. We demonstrate for the first time that ULIRGs follow the fundamental metallicity relation (FMR). The scatter of ULIRGs around the FMR (0.09 dex–0.5 dex) is comparable to the scatter of z ∼ 2–3 galaxies. We provide the largest local (0.050