Short GRB Host Galaxies. I. Photometric and Spectroscopic Catalogs, Host Associations, and Galactocentric Offsets
Short GRB Host Galaxies. I. Photometric and Spectroscopic Catalogs, Host Associations, and Galactocentric Offsets
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DOI：
10.3847/1538-4357/ac91d0
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发表时间：
2022-06
期刊：
影响因子：
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通讯作者：
W. Fong;A. Nugent;Yuxin Dong;E. Berger;K. Paterson;R. Chornock;A. Levan;P. Blanchard;K. Alexander;J. Andrews;B. Cobb;A. Cucchiara;D. Fox;Chris L. Fryer;A. Gordon;C. Kilpatrick;R. Lunnan;R. Margutti;Adam A. Miller;P. Milne;M. Nicholl;D. Perley;J. Rastinejad;A. R. Escorial;G. Schroeder;N. Smith;N. Tanvir;G. Terreran
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文献类型：
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作者：
W. Fong;A. Nugent;Yuxin Dong;E. Berger;K. Paterson;R. Chornock;A. Levan;P. Blanchard;K. Alexander;J. Andrews;B. Cobb;A. Cucchiara;D. Fox;Chris L. Fryer;A. Gordon;C. Kilpatrick;R. Lunnan;R. Margutti;Adam A. Miller;P. Milne;M. Nicholl;D. Perley;J. Rastinejad;A. R. Escorial;G. Schroeder;N. Smith;N. Tanvir;G. Terreran
我们提出了一个全面的光学和近红外普查领域的90个短伽玛射线暴（GRB）在2005-2021年发现，构成所有短GRB的主机星系协会是可行的（约60%的斯威夫特短GRB人口）。我们对58个不同的伽玛暴及其宿主星系的26个光谱进行了274个新的多波段成像观测。补充文献和档案调查数据，目录包含542光度和42光谱数据集。测光表的光学和近红外波段的3σ深度分别为24-27等和23-26等。我们确定了84个爆发的宿主星系，其中最强大的协会占56%（50/90）的事件，而只有一小部分，6.7%，有不确定的主机协会。在新的光谱学基础上，我们测量了18个z = 0.15-1.5的主体光谱红移，发现约23%-41%的Swift短暴起源于z > 1。我们还提出了84个短伽玛暴的银河中心偏移目录。考虑到个体测量不确定性的大范围，我们发现预测偏移量的中位数为107.7 kpc，其中具有最强大关联的爆发的中位数较小，为104.8 kpc。我们的目录捕获了更多的高红移和低光度主机，和更多的高度偏移的爆发比以前发现的，从而多样化的人口已知的短伽玛射线暴主机和属性。在位置和主机光度，人口的短伽玛射线暴和没有可检测的扩展发射是统计上无法区分的。这表明它们来自相同的祖先，或者来自多个祖先，这些祖先在相似的环境中形成和进化。所有的数据产品都可以在调查伽马射线暴宿主特征的宽带储存库网站上找到。
We present a comprehensive optical and near-infrared census of the fields of 90 short gamma-ray bursts (GRBs) discovered in 2005–2021, constituting all short GRBs for which host galaxy associations are feasible (≈60% of the total Swift short GRB population). We contribute 274 new multi-band imaging observations across 58 distinct GRBs and 26 spectra of their host galaxies. Supplemented by literature and archival survey data, the catalog contains 542 photometric and 42 spectroscopic data sets. The photometric catalog reaches 3σ depths of ≳24–27 mag and ≳23–26 mag for the optical and near-infrared bands, respectively. We identify host galaxies for 84 bursts, in which the most robust associations make up 56% (50/90) of events, while only a small fraction, 6.7%, have inconclusive host associations. Based on new spectroscopy, we determine 18 host spectroscopic redshifts with a range of z ≈ 0.15–1.5 and find that ≈23%–41% of Swift short GRBs originate from z > 1. We also present the galactocentric offset catalog for 84 short GRBs. Taking into account the large range of individual measurement uncertainties, we find a median of projected offset of ≈7.7 kpc, for which the bursts with the most robust associations have a smaller median of ≈4.8 kpc. Our catalog captures more high-redshift and low-luminosity hosts, and more highly offset bursts than previously found, thereby diversifying the population of known short GRB hosts and properties. In terms of locations and host luminosities, the populations of short GRBs with and without detectable extended emission are statistically indistinguishable. This suggests that they arise from the same progenitors, or from multiple progenitors, which form and evolve in similar environments. All of the data products are available on the Broadband Repository for Investigating Gamma-Ray Burst Host Traits website.