The Astrophysical Journal Supplement Series最新文献_第8页

A Catalog of 1.58 Million Clusters of Galaxies Identified from the DESI Legacy Imaging Surveys 从 DESI 遗留成像巡天中发现的 158 万个星系团目录

The Astrophysical Journal Supplement Series Pub Date : 2024-06-10 DOI: 10.3847/1538-4365/ad409d

Z. L. Wen, J. L. Han

{"title":"A Catalog of 1.58 Million Clusters of Galaxies Identified from the DESI Legacy Imaging Surveys","authors":"Z. L. Wen, J. L. Han","doi":"10.3847/1538-4365/ad409d","DOIUrl":"https://doi.org/10.3847/1538-4365/ad409d","url":null,"abstract":"Based on the DESI Legacy Imaging Surveys released data and available spectroscopic redshifts, we identify 1.58 million clusters of galaxies by searching for the overdensity of the stellar mass distribution of galaxies within redshift slices around preselected massive galaxies, with 877,806 clusters being found for the first time. The identified clusters have an equivalent mass of <italic toggle=\"yes\">M</italic>\u0000500 ≥ 0.47 × 1014\u0000<italic toggle=\"yes\">M</italic>\u0000⊙ with an uncertainty of 0.2 dex. The redshift distribution of clusters extends to <italic toggle=\"yes\">z</italic> ∼ 1.5, and 338,841 clusters have spectroscopic redshifts. Our cluster sample includes most of the rich optical clusters in previous catalogs, more than 95% of the massive Sunyaev–Zeldovich clusters, and 90% of the ROSAT and eROSITA X-ray clusters. From the light distributions of the member galaxies, we derive the dynamical state parameters for 27,685 rich clusters and find no significant evolution of the dynamical state with redshift. We find that the stellar mass of the brightest cluster galaxies grows by a factor of 2 since <italic toggle=\"yes\">z</italic> = 1.","PeriodicalId":22368,"journal":{"name":"The Astrophysical Journal Supplement Series","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141504886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Every Data Point Counts: Stellar Flares as a Case Study of Atmosphere-aided Studies of Transients in the LSST Era 每个数据点都很重要：恒星耀斑作为 LSST 时代大气辅助瞬变研究的案例研究

The Astrophysical Journal Supplement Series Pub Date : 2024-06-10 DOI: 10.3847/1538-4365/ad4110

Riley W. Clarke, James R. A. Davenport, John Gizis, Melissa L. Graham, Xiaolong Li, Willow Fortino, Easton J. Honaker, Ian Sullivan, Yusra Alsayyad, James Bosch, Robert A. Knop, Federica B. Bianco

{"title":"Every Data Point Counts: Stellar Flares as a Case Study of Atmosphere-aided Studies of Transients in the LSST Era","authors":"Riley W. Clarke, James R. A. Davenport, John Gizis, Melissa L. Graham, Xiaolong Li, Willow Fortino, Easton J. Honaker, Ian Sullivan, Yusra Alsayyad, James Bosch, Robert A. Knop, Federica B. Bianco","doi":"10.3847/1538-4365/ad4110","DOIUrl":"https://doi.org/10.3847/1538-4365/ad4110","url":null,"abstract":"Due to their short timescale, stellar flares are a challenging target for the most modern synoptic sky surveys. The upcoming Vera C. Rubin Legacy Survey of Space and Time (LSST), a project designed to collect more data than any precursor survey, is unlikely to detect flares with more than one data point in its main survey. We developed a methodology to enable LSST studies of stellar flares, with a focus on flare temperature and temperature evolution, which remain poorly constrained compared to flare morphology. By leveraging the sensitivity expected from the Rubin system, differential chromatic refraction (DCR) can be used to constrain flare temperature from a single-epoch detection, which will enable statistical studies of flare temperatures and constrain models of the physical processes behind flare emission using the unprecedentedly high volume of data produced by Rubin over the 10 yr LSST. We model the refraction effect as a function of the atmospheric column density, photometric filter, and temperature of the flare, and show that flare temperatures at or above ∼4000 K can be constrained by a single <italic toggle=\"yes\">g</italic>-band observation at air mass <italic toggle=\"yes\">X</italic> ≳ 1.2, given the minimum specified requirement on the single-visit relative astrometric accuracy of LSST, and that a surprisingly large number of LSST observations are in fact likely be conducted at <italic toggle=\"yes\">X</italic> ≳ 1.2, in spite of image quality requirements pushing the survey to preferentially low <italic toggle=\"yes\">X</italic>. Having failed to measure flare DCR in LSST precursor surveys, we make recommendations on survey design and data products that enable these studies in LSST and other future surveys.","PeriodicalId":22368,"journal":{"name":"The Astrophysical Journal Supplement Series","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141527887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deep Optical Emission-line Images of Nine Known and Three New Galactic Supernova Remnants 九颗已知和三颗新银河系超新星残留物的深光学发射线图像

The Astrophysical Journal Supplement Series Pub Date : 2024-06-03 DOI: 10.3847/1538-4365/ad410a

Robert A. Fesen, Marcel Drechsler, Xavier Strottner, Bray Falls, Yann Sainty, Nicolas Martino, Richard Galli, Mathew Ludgate, Markus Blauensteiner, Wolfgang Reich, Sean Walker, Dennis di Cicco, David Mittelman, Curtis Morgan, Aziz Ettahar Kaeouach, Justin Rupert and Zouhair Benkhaldoun

{"title":"Deep Optical Emission-line Images of Nine Known and Three New Galactic Supernova Remnants","authors":"Robert A. Fesen, Marcel Drechsler, Xavier Strottner, Bray Falls, Yann Sainty, Nicolas Martino, Richard Galli, Mathew Ludgate, Markus Blauensteiner, Wolfgang Reich, Sean Walker, Dennis di Cicco, David Mittelman, Curtis Morgan, Aziz Ettahar Kaeouach, Justin Rupert and Zouhair Benkhaldoun","doi":"10.3847/1538-4365/ad410a","DOIUrl":"https://doi.org/10.3847/1538-4365/ad410a","url":null,"abstract":"Deep optical emission-line images are presented for nine known plus three new Galactic supernova remnants (SNRs), all but one having at least one angular dimension >1°. Wide-field images taken in Hα and [O iii] λ5007 reveal many new and surprising remnant structures including large remnant shock extensions and “breakout” features not seen in published optical or radio data. These images represent over 12,000 individual images totaling more than 1000 hr of exposure time taken over the last 2 yr mainly using small aperture telescopes, which detected fainter nebular line emissions than published emission-line images. During the course of this imaging program, we discovered three new SNRs, namely G107.5-5.1 (the Nereides Nebula), G209.9-8.2, and G210.5+1.3, two of which have diameters >1.°5. In addition to offering greater structural detail on the nine already known SNRs, a key finding of this study is the importance of [O iii] emission-line imaging for mapping the complete shock emissions of Galactic SNRs.","PeriodicalId":22368,"journal":{"name":"The Astrophysical Journal Supplement Series","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141253177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advancing Solar Energetic Particle Event Prediction through Survival Analysis and Cloud Computing. I. Kaplan–Meier Estimation and Cox Proportional Hazards Modeling 通过生存分析和云计算推进太阳高能粒子事件预测。I. Kaplan-Meier 估计和 Cox 比例危害模型

The Astrophysical Journal Supplement Series Pub Date : 2024-06-01 DOI: 10.3847/1538-4365/ad3fba

India Jackson, Petrus Martens

{"title":"Advancing Solar Energetic Particle Event Prediction through Survival Analysis and Cloud Computing. I. Kaplan–Meier Estimation and Cox Proportional Hazards Modeling","authors":"India Jackson, Petrus Martens","doi":"10.3847/1538-4365/ad3fba","DOIUrl":"https://doi.org/10.3847/1538-4365/ad3fba","url":null,"abstract":"Solar energetic particles (SEPs) pose significant challenges to technology, astronaut health, and space missions. This initial paper in our two-part series undertakes a comprehensive analysis of the time to detection for SEPs, applying advanced statistical techniques and cloud-computing resources to deepen our understanding of SEP event probabilities over time. We employ a range of models encompassing nonparametric, semiparametric, and parametric approaches, such as the Kaplan–Meier estimator and Cox Proportional Hazards models. These are complemented by various distribution models—including exponential, Weibull, lognormal, and log-logistic distributions—to effectively tackle the challenges associated with “censored data,” a common issue in survival analysis. Employing Amazon Web Services and Python’s “lifelines” and “scikit-survival” libraries, we efficiently preprocess and analyze large data sets. This methodical approach not only enhances our current analysis, but also sets a robust statistical foundation for the development of predictive models, which will be the focus of the subsequent paper. In identifying the key determinants that affect the timing of SEP detection, we establish the vital features that will inform the machine-learning (ML) techniques explored in the second paper. There, we will utilize advanced ML models—such as survival trees and random survival forests—to evolve SEP event prediction capabilities. This research is committed to advancing space weather, strengthening the safety of space-borne technology, and safeguarding astronaut health.","PeriodicalId":22368,"journal":{"name":"The Astrophysical Journal Supplement Series","volume":"37 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141410498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Erratum: “Photometric Selection of Unobscured QSOs at the Ecliptic Poles: KMTNet in the South Field and Pan-STARRS in the North Field” (2023, ApJS, 268, 57) 勘误："黄道两极无遮挡 QSO 的光度选择：南磁场的 KMTNet 和北磁场的 Pan-STARRS"（2023 年，ApJS, 268, 57）：南场的KMTNet和北场的Pan-STARRS"（2023年，ApJS，268，57）

The Astrophysical Journal Supplement Series Pub Date : 2024-06-01 DOI: 10.3847/1538-4365/ad487c

Woowon Byun, Minjin Kim, Y. Sheen, Dongseob Lee, L. C. Ho, Jongwan Ko, K. Seon, H. Shim, Dohyeong Kim, Yongjung Kim, J. Lee, Hyunjin Jeong, Jong-Hak Woo, Woong-Seob Jeong, Byeong-Gon Park, Sang Chul Kim, Yongseok Lee, S. Cha, Hyunmi Song, D. Son, Yujin Yang

引用次数: 0

A Sample of Am and Ap Candidates from LAMOST DR10 (v1.0) Based on the Ensemble Regression Model 基于集合回归模型的 LAMOST DR10（v1.0）Am 和 Ap 候选样本

The Astrophysical Journal Supplement Series Pub Date : 2024-06-01 DOI: 10.3847/1538-4365/ad4107

Hai-Feng 海峰 Yang 杨, Rui 瑞 Wang 王, Jiang-Hui 江辉 Cai 蔡, A-Li 阿理 Luo 罗, Bing 冰 Du 杜, Yan-Ting 艳婷 He 贺, Mei-Hong 美红 Su 苏, Chen-Hui 晨辉 Shi 史, Xu-Jun 旭俊 Zhao 赵, Ya-Ling 亚玲 Xun 荀, Yi-Nan 艺楠 Yuan 员

{"title":"A Sample of Am and Ap Candidates from LAMOST DR10 (v1.0) Based on the Ensemble Regression Model","authors":"Hai-Feng 海峰 Yang 杨, Rui 瑞 Wang 王, Jiang-Hui 江辉 Cai 蔡, A-Li 阿理 Luo 罗, Bing 冰 Du 杜, Yan-Ting 艳婷 He 贺, Mei-Hong 美红 Su 苏, Chen-Hui 晨辉 Shi 史, Xu-Jun 旭俊 Zhao 赵, Ya-Ling 亚玲 Xun 荀, Yi-Nan 艺楠 Yuan 员","doi":"10.3847/1538-4365/ad4107","DOIUrl":"https://doi.org/10.3847/1538-4365/ad4107","url":null,"abstract":"Large samples of Am and Ap stars are helpful in studying the interplay between phenomena like atomic diffusion, magnetic fields, and stellar rotation in stellar astrophysics. Existing samples of Am and Ap stars, mostly obtained from spectral data with a signal-to-noise ratio in the g band (S/Ng) greater than 50, can benefit from expansion by exploring spectra with lower S/Ng. Therefore, this paper proposes an ensemble regression model applicable to spectra with a minimum S/Ng of 30. Using the model, we identify 21,361 Am candidates, of which 11,614 are new, and 6182 Ap candidates, of which 4978 are new, from LAMOST DR10. The Am sample size has increased by 60% and the Ap sample size has increased by 180% compared to the previous sample. In terms of effective temperature (T eff), the Am candidates range mainly from 6000 to 8500 K, while the Ap candidates range from 6000 to 11,700 K. The surface gravity ( logg ) distributions for Am and Ap candidates differ in the range of 3.25–4.75 dex. The number of Am candidates increases stepwise, in contrast to the relatively uniform distribution of Ap candidates across the entire surface gravity range. Regarding metallicity ([Fe/H]), Am candidates typically range from −0.75 to 0.38 dex, peaking near 0 dex, while Ap candidates are distributed from −1.38 to 0.38 dex, with a peak near −0.5 dex.","PeriodicalId":22368,"journal":{"name":"The Astrophysical Journal Supplement Series","volume":"3 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141396125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Theoretical Study of Electron Capture, Excitation, and Ionization Processes in H+−H(2l) Collisions H+-H(2l) 碰撞中电子俘获、激发和电离过程的理论研究

The Astrophysical Journal Supplement Series Pub Date : 2024-06-01 DOI: 10.3847/1538-4365/ad3633

Y. Wang, K. Wang, L. Liu, Y. Wu, F. Wang, J. G. Wang

{"title":"Theoretical Study of Electron Capture, Excitation, and Ionization Processes in H+−H(2l) Collisions","authors":"Y. Wang, K. Wang, L. Liu, Y. Wu, F. Wang, J. G. Wang","doi":"10.3847/1538-4365/ad3633","DOIUrl":"https://doi.org/10.3847/1538-4365/ad3633","url":null,"abstract":"The processes of single-electron charge exchange, excitation, and ionization during proton impact on H(2l) are investigated. We employ two different theoretical methods that are suitable for different collision energy regions: the full quantum-mechanical molecular orbital close-coupling method for energies from 0.001 to 1 keV u−1 and the two-center atomic orbital close-coupling (TC-AOCC) method for energies between 0.3 and 100 keV u−1. For charge exchange and excitation processes, the total and nl-resolved cross sections to the final reaction channels of H (nl, n = 1–4) have been obtained over a broad energy region. Moreover, the ionization cross sections in the TC-AOCC calculation are also reported for both H(2s) and H(2p) initial target states. The present results are all compared with those from other sources when available. It is found that the magnitude and energy behavior of nl-resolved excitation cross sections for H+–H(2p) collisions are significantly distinct from those of the H(2s) initial state in the entire energy range considered, particularly in the low-energy region. The energy behaviors of the nl-resolved charge exchange cross sections from the H(2p) initial state are similar to those from the H(2s) initial state, but their magnitudes are larger. The present accurate cross-section data are anticipated to provide insight into the research of astrophysics and controlled fusion plasmas.","PeriodicalId":22368,"journal":{"name":"The Astrophysical Journal Supplement Series","volume":"30 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141403554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multiobject Spectroscopy of Galaxy Clusters at z ∼ 0.95 in the Ultra Deep Survey Field with Different Star Formation Properties and Large-scale Environments 对超深巡天观测场中 z ∼ 0.95 星级、具有不同恒星形成特性和大尺度环境的星系团进行多目标光谱分析

The Astrophysical Journal Supplement Series Pub Date : 2024-06-01 DOI: 10.3847/1538-4365/ad45f8

Seong-Kook Lee, Myungshin Im, Bomi Park, M. Hyun, I. Paek, Dohyeong Kim

{"title":"Multiobject Spectroscopy of Galaxy Clusters at z ∼ 0.95 in the Ultra Deep Survey Field with Different Star Formation Properties and Large-scale Environments","authors":"Seong-Kook Lee, Myungshin Im, Bomi Park, M. Hyun, I. Paek, Dohyeong Kim","doi":"10.3847/1538-4365/ad45f8","DOIUrl":"https://doi.org/10.3847/1538-4365/ad45f8","url":null,"abstract":"While galaxy clusters are dominated by quiescent galaxies in the local Universe, they show a wide range in quiescent galaxy fraction (QF) at higher redshifts. Here we present the discovery of two galaxy clusters at z ∼ 0.95 with contrasting QFs despite having similar masses (log (M 200/M ⊙) ∼ 14) and spectra and redshifts of 29 galaxies in these clusters and 76 galaxies in the surrounding area. The clusters are found in the Ultra Deep Survey field and confirmed through multiobject spectroscopic observation using the Inamori Magellan Areal Camera and Spectrograph on the Magellan telescope. The two clusters exhibit QFs of 0.094−0.032+0.11 and 0.38−0.11+0.14 , respectively. Analysis of large-scale structures (LSSs) surrounding these clusters finds that properties of these clusters are consistent with the anticorrelation trend between the QF and the extent of surrounding LSS, found in Lee et al., which can be interpreted as a result of the replenishment of young, star-forming galaxies keeping the QF low when galaxy clusters are accompanied by rich surrounding environments.","PeriodicalId":22368,"journal":{"name":"The Astrophysical Journal Supplement Series","volume":"30 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141414564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical Modeling of Energetic Charged-particle Transport with SPECTRUM Software: General Approach and Artificial Effects due to Field Discretization 用 SPECTRUM 软件建立高能带电粒子输运的数值模型：一般方法和场离散化引起的人为效应

The Astrophysical Journal Supplement Series Pub Date : 2024-06-01 DOI: 10.3847/1538-4365/ad4637

J. A. Guzman, V. Florinski, G. Tóth, S. Sharma, B. van der Holst, M. Opher

引用次数: 0

Erratum: “Zero and Extremely Low-metallicity Rotating Massive Stars: Evolution, Explosion, and Nucleosynthesis Up to the Heaviest Nuclei” (2024, ApJS, 270, 28) 勘误："零金属性和极低金属性旋转大质量恒星：进化、爆炸和核合成，直至最重的核" (2024, ApJS, 270, 28)

The Astrophysical Journal Supplement Series Pub Date : 2024-06-01 DOI: 10.3847/1538-4365/ad4f7d

L. Roberti, M. Limongi, A. Chieffi

引用次数: 0