The Swift GRB Host Galaxy Legacy Survey - II. Rest-Frame NIR Luminosity Distribution and Evidence for a Near-Solar Metallicity Threshold
D. A. Perley, N. R. Tanvir, J. Hjorth, T. Laskar, E. Berger, R. Chary, A. de Ugarte Postigo, J. P. U. Fynbo, T. Krühler, A. J. Levan, M. J. Michałowski, S. Schulze
We present rest-frame NIR luminosities and stellar masses for a large and uniformly-selected population of GRB host galaxies using deep Spitzer Space Telescope imaging of 119 targets from the Swift GRB Host Galaxy Legacy Survey spanning 0.03 < z < 6.3, and determine the effects of galaxy evolution and chemical enrichment on the mass distribution of the GRB host population across cosmic history. We find strong evolution in the host luminosity distribution between z~0.5 (median absolute NIR AB magnitude ~ -18.5, corresponding to M* ~ 3x10^8 M_sun and z~1.5), but negligible variation between z~1.5 and z~5 (median magnitude ~ -21.2, corresponding to M* ~ 5x10^9 M_sun). Dust-obscured GRBs dominate the massive host population but are only rarely seen associated with low-mass hosts, indicating that massive star-forming galaxies are universally and (to some extent) homogeneously dusty at high-redshift while low-mass star-forming galaxies retain little dust in their ISM. Comparing our luminosity distributions to field surveys and measurements of the high-z mass-metallicity relation, our results have good consistency with a model in which the GRB rate per unit star-formation is constant in galaxies with gas-phase metallicity below approximately the Solar value but heavily suppressed in more metal-rich environments. This model also naturally explains the previously-reported "excess" in the GRB rate beyond z>2; metals stifle GRB production in most galaxies at z<1.5 but have only minor impact at higher redshifts. The metallicity threshold we infer is much higher than predicted by single-star models and favors a binary progenitor. Our observations also constrain the fraction of cosmic star-formation in low-mass galaxies undetectable to Spitzer to be a small minority at most redshifts (~10% at z~2, ~25% at z~3, and ~50% at z=3.5-6.0).
The JWST-PRIMAL Legacy Survey. A JWST/NIRSpec reference sample for the physical properties and Lyman-$α$ absorption and emission of $\sim 500$ galaxies at $z=5.5-13.4$
X-ray to Mid-IR Spectral Energy Distributions: A Catalog of X-ray Selected AGNs in the XMM-COSMOS Survey
Sabancı University（萨巴恩奇大学）；The George Washington University（乔治华盛顿大学）；İstanbul University（伊斯坦布尔大学）；Türkiye National Observatories（土耳其国家天文台）；The Pennsylvania State University（宾夕法尼亚州立大学）
Most of the massive star-forming galaxies are found to have `inside-out' stellar mass growth modes, which means the inner parts of the galaxies mainly consist of the older stellar population, while the star forming in the outskirt of the galaxy is still ongoing. The high-resolution HST images from Hubble Deep UV Legacy Survey (HDUV) and Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) projects with the unprecedented depth in both F275W and F160W bands are the perfect data sets to study the forming and formed stellar distribution directly. We selected the low redshift ($…
Legacy ExtraGalactic UV Survey with The Hubble Space Telescope. Stellar cluster catalogues and first insights into cluster formation and evolution in NGC 628
我们报告了大量的努力，这是生产全面的高层次的年轻星团（YSC）目录的一个显着的一部分星系观察与遗产银河系外紫外线调查（LEGUS）哈勃国库计划。我们提出的方法来提取集群的位置，验证其真正的性质，产生多波段测光（从NUV到NIR），并通过光谱能量分布拟合分析得出其物理性质。我们使用附近的螺旋星系NGC628作为一个测试案例，展示了LEGUS将对我们理解YSC的形成和演化及其宿主星系内的紧凑恒星协会产生的影响。我们分析了从紫外到近红外的簇光度函数，发现在亮端和所有波长处都有一个陡峭的变化，这表明发光簇的缺乏。NGC 628的质量函数与斜率为$\sim -2$的幂律分布和$10^5$ M $_\odot$的几倍截断一致。在它们形成之后，YSC和紧密协会遵循不同的进化路径。YSC存活时间更长，证实它们是潜在的结合系统。星系团在时间尺度上的消失与恒星形成区的等级组织相当，这表明它们是一个膨胀的系统。我们发现在NGC628的内部区域存在与质量无关的星系团分裂，而在星系的外部，几乎没有或根本没有分裂。我们观察到更快的破坏率低质量（$\leq$ $10^4$ M $_\odot$）集群表明，一个质量依赖的组件是必要的，以充分描述在NGC628的YSC中断过程。
The Deep Extragalactic VIsible Legacy Survey (DEVILS) is a large spectroscopic campaign at the Anglo-Australian Telescope (AAT) aimed at bridging the near and distant Universe by producing the highest completeness survey of galaxies and groups at intermediate redshifts ($0.3<z<1.0$). Our sample consists of $\sim$60,000 galaxies to Y$<$21.2mag, over $\sim$6deg$^{2}$ in three well-studied deep extragalactic fields (Cosmic Origins Survey field, COSMOS, Extended Chandra Deep Field South, ECDFS and the X-ray Multi-Mirror Mission Large-Scale Structure region, XMM-LSS - all Large Synoptic Survey Tele…
Near-IR Weak-lensing (NIRWL) Measurements in the CANDELS Fields. II. Mass Mapping and Overdensity Characterization
IPAC, California Institute of Technology（加州理工学院 IPAC）；Korea Astronomy and Space Science Institute (KASI)（韩国天体宇宙科学研究所）；SPACE Institute, University of California（加州大学 SPACE 研究所）；Institute for Astronomy, University of Edinburgh（爱丁堡大学天文研究所）；Department of Physics, Duke University（杜克大学物理系）；Department of Astronomy, Yonsei University（延世大学天文学系）；Department of Physics and Astronomy, University of California, Davis（加州大学戴维斯分校物理与天文学系）；Center for Cosmology and Astroparticle Physics, The Ohio State University（俄亥俄州立大学宇宙学与高能粒子物理中心）；Department of Physics, The Ohio State University（俄亥俄州立大学物理系）；Department of Astronomy, The Ohio State University（俄亥俄州立大学天文学系）
The BoRG-$JWST$ Survey: Abundance and Mass-to-light Ratio of Luminous $z=7-9$ Galaxies from Independent Sight Lines with NIRSpec
University of California, Los Angeles（加州大学洛杉矶分校）；The University of Texas at Austin（德克萨斯大学奥斯汀分校）；University of Geneva（日内瓦大学）；California Institute of Technology（加州理工学院）；National Astronomical Research Institute of Thailand (NARIT)（泰国国家天文研究所）；Niels Bohr Institute, University of Copenhagen（哥本哈根大学尼尔斯·玻尔研究所）；Max Planck Institut für Astronomie（马克斯·普朗克天体物理研究所）；University of Melbourne（墨尔本大学）
We present a catalog of 26 faint submillimeter galaxies (SMGs) in the XMM-LSS field identified by cross-matching serendipitously detected sources in archival ALMA Band 6 and 7 data with multi-band near-infrared (NIR) and optical data from the Spitzer Extragalactic Representative Volume Survey, the VISTA Deep Extragalactic Survey, the Canada-France-Hawaii Telescope Legacy Large Survey, and the Hyper Suprime-Cam Subaru Strategic Program. Of the 26 SMGs in our sample, 15 are identified here for the first time. The majority of the sources in our sample (16/26) have faint submm fluxes ($0.1\,{\rm m…
Realizing the utility of Ly$α$ emission to trace the evolution of the intergalactic medium (IGM) during the epoch of reionization requires deep spectroscopy across the boundary of optical and near-infrared (NIR) spectrographs at $z\sim7.2$ when Ly$α$ emission is at $\sim$1$μ$m. Our Texas Spectroscopic Search for Ly$α$ Emission at the End of Reionization includes 18 nights of deep spectroscopic observations using the Keck DEIMOS (optical) and MOSFIRE (NIR) spectrographs. Within this dataset we observe Ly$α$ emission from 183 photometric-redshift selected galaxies at $z =$ 5.5 - 8.3 from the Cos…
We present the BAT AGN Spectroscopic Survey (BASS) Near-infrared Data Release 2 (DR2), a study of 168 nearby ($\bar z$ = 0.04, $z$ < 0.6) active galactic nuclei (AGN) from the all-sky Swift Burst Array Telescope X-ray survey observed with Very Large Telescope (VLT)/X-shooter in the near-infrared (NIR; 0.8 - 2.4 $μ$m). We find that 49/109 (45%) Seyfert 2 and 35/58 (60%) Seyfert 1 galaxies observed with VLT/X-shooter show at least one NIR high-ionization coronal line (CL, ionization potential $χ$ > 100 eV). Comparing the emission of the [Si vi] $λ$1.9640 CL with the X-ray emission for the DR2 AG…
The number of long-duration Gamma Ray Burst (LGRB) host galaxies with measured metallicities and host masses has now grown to over one hundred, allowing us to investigate how the distributions of both these properties change with redshift. Using the combined host galaxy metallicity sample from Graham & Fruchter (2013) and Krühler et al. (2015), we find a surprising lack of evolution in the LGRB metallicity distribution across different redshifts. In particular, the fraction of LGRB hosts with relatively high metallicity (12+log(O/H) $\geq$ 8.4) remains essentially constant out to z = 2.5. This…
CIBER $\times$ galaxy cross-correlations reveal a bright, low-redshift NIR background
Berkeley Center for Cosmological Physics, University of California, Berkeley（加州大学伯克利分校宇宙学物理中心）；Lawrence Berkeley National Laboratory（劳伦斯伯克利国家实验室）；California Institute of Technology（加州理工学院）；Academia Sinica Institute of Astronomy and Astrophysics (ASIAA)（中央研究院天文及天文物理研究所）；School of Science and Technology, Kwansei Gakuin University（关西学院大学理工学部）；Frontier Research Institute for Interdisciplinary Science, Tohoku University（东北大学跨学科科学前沿研究所）；Jet Propulsion Laboratory, California Institute of Technology（加州理工学院喷气推进实验室）；School of Physics and Astronomy, Rochester Institute of Technology（罗切斯特理工学院物理与天文学学院）
In this work we study how to employ the upcoming Legacy Survey of Space and Time (LSST) data to constrain physical properties of normal, star forming galaxies. We use simulated LSST data and existing real observations to test the estimations of the physical properties of galaxies, such as star formation rate (SFR), stellar mass ($M_{star}$), and dust luminosity ($L_{dust}$). We focus on normal star-forming galaxies, as they form the majority of the galaxy population in the universe and therefore are more likely to be observed by the LSST. We perform a simulation of LSST observations and uncert…
JWST Reveals a Galaxy-Wide Association of Red Supergiants with OB Stars in NGC 5584
School of Physics and Astronomy, China West Normal University（西华师范大学物理与天文学学院）；School of Physics and Astronomy, Beijing Normal University（北京师范大学物理与天文学院）；Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University（北京师范大学前沿天文与天体物理研究所）；CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences（中国科学院国家天文台光学天文重点实验室）
GLIMPSE: An ultra-faint $\simeq$ 10$^{5}$ $M_{\odot}$ Pop III Galaxy Candidate and First Constraints on the Pop III UV Luminosity Function at $z\simeq6-7$
