NASA/IPAC河外星系数据库（NED）的完备性——本动体样本
Completeness of the NASA/IPAC Extragalactic Database (NED) -- Local Volume Sample
AI总结：
本研究构建了含约190万个天体、覆盖1000 Mpc的NED本动体样本（NED-LVS），评估其完备性并验证其在引力波宿主星系排序等天体物理研究中的应用价值。
摘要：
我们介绍了NASA/IPAC河外星系数据库（NED）本动体样本（NED-LVS），这是一个包含约190万个天体、距离范围延伸至1000 Mpc的子集。我们利用NED中来自全天巡天的紫外（UV）和红外（IR）流量来推导物理性质，并相对于预期的局域光度密度估计了完备性。\n相对于近红外（NIR）光度（可追踪星系的恒星质量）的完备性在距离D<30 Mpc时约为100%，在300 Mpc处仍保持中等水平（70%）。对于更亮的星系（≳L*），NED-LVS在约400 Mpc范围内的完备性约为100%。与其他局域宇宙样本（GLADE和HECATE）相比，这三个样本在30 Mpc以下的完备性都约为100%。在距离超过约80 Mpc时，NED-LVS的完备性比GLADE和HECATE都高出约10-20%。\nNED-LVS是NED引力波后续观测（NED-GWF）服务的基础样本，该服务可在LIGO-Virgo-KAGRA合作组织发布警报后的数分钟内，为引力波事件提供按优先级排序的宿主候选天体列表。我们通过3种物理性质测试了GW170817所在天区中星系的优先级排序，发现恒星质量和反比比恒星形成率都能将正确的宿主星系排在前十位。此外，NED-LVS可用于广泛的其他天体物理研究：星系演化、恒星形成、大尺度结构、星系环境等。NED中的数据会定期更新，NED-LVS也将同步更新。因此，未来数年NED-LVS将继续为众多天体物理研究领域提供完备性不断提升的星系样本。
英文摘要：
We introduce the NASA/IPAC Extragalactic Database (NED) Local Volume Sample (NED-LVS), a subset of $\sim$1.9 million objects with distances out to 1000~Mpc. We use UV and IR fluxes available in NED from all-sky surveys to derive physical properties, and estimate the completeness relative to the expected local luminosity density. The completeness relative to NIR luminosities (which traces a galaxy's stellar mass) is roughly 100% at $D<$30~Mpc and remains moderate (70%) out to 300~Mpc. For brighter galaxies ($\gtrsim L^{*}$), NED-LVS is $\sim$100% complete out to $\sim$400~Mpc. When compared to other local Universe samples (GLADE and HECATE), all three are $\sim$100% complete below 30~Mpc. At distances beyond $\sim$80~Mpc, NED-LVS is more complete than both GLADE and HECATE by $\sim$10-20%. NED-LVS is the underlying sample for the NED gravitational wave follow-up (NED-GWF) service, which provides prioritized lists of host candidates for GW events within minutes of alerts issued by the LIGO-Virgo-KAGRA collaboration. We test the prioritization of galaxies in the volume of GW170817 by 3 physical properties, where we find that both stellar mass and inverse specific star formation rate place the correct host galaxy in the top ten. In addition, NED-LVS can be used for a wide variety of other astrophysical studies: galaxy evolution, star formation, large-scale structure, galaxy environments, and more. The data in NED are updated regularly, and NED-LVS will be updated concurrently. Consequently, NED-LVS will continue to provide an increasingly complete sample of galaxies for a multitude of astrophysical research areas for years to come.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
