The Astrophysical Journal Supplement Series最新文献

The Atlas of Massive Galactic O-type Spectral Standards (MaGOSS) in the Near-infrared 近红外大质量星系o型光谱标准图集（MaGOSS）

The Astrophysical Journal Supplement Series Pub Date : 2025-11-01 DOI: 10.3847/1538-4365/ae0a51

F. N. Giudici Michilini, R. Gamen, G. Ferrero, N. Morrell, R. H. Barbá

{"title":"The Atlas of Massive Galactic O-type Spectral Standards (MaGOSS) in the Near-infrared","authors":"F. N. Giudici Michilini, R. Gamen, G. Ferrero, N. Morrell, R. H. Barbá","doi":"10.3847/1538-4365/ae0a51","DOIUrl":"https://doi.org/10.3847/1538-4365/ae0a51","url":null,"abstract":"Abstract Spectral morphological analysis is crucial for determining the fundamental physical properties of stars, particularly for rare and astrophysically important O-type stars. Due to heavy interstellar extinction in the optical range, most Galactic O stars remain obscured, making near-infrared (NIR) spectroscopy the only viable approach to achieve a reasonably complete sample of this stellar population and to extend current classification schemes. Our aim is to build a comprehensive spectral classification atlas of O-type stars in the NIR, providing robust morphological criteria to support and enhance future research on massive stars in heavily obscured environments. To this end, we obtained high-resolution ( R ∼ 4000–11,000) NIR spectra for the majority of standard stars from the latest installment of the Galactic O-Star Spectroscopic Survey, using spectrographs at Gemini North and Las Campanas Observatory to ensure broad spectral coverage and high data quality. We present an atlas featuring spectral sequences for nine dwarfs (O4 to B0), nine giants (O3.5 to O9.5), and 20 supergiants (O2 to B0), systematically organised and accompanied by clear morphological criteria for subtype classification across the Y , J , H , and K bands (0.930–1.115, 1.160–1.290, 1.460–1.760, and 2.050–2.200 μ m, respectively). This atlas provides a unified framework for reliable NIR classification of O-type stars and paves the way for detailed studies of massive stars in regions heavily affected by extinction.","PeriodicalId":22368,"journal":{"name":"The Astrophysical Journal Supplement Series","volume":"281 1","pages":"18-18"},"PeriodicalIF":0.0,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147887911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Production and Loss Processes of Hydrogen Energetic Neutral Atoms in the Heliosphere from 5 eV–500 keV 5 eV-500 keV日球层氢能中性原子的产生和损失过程

The Astrophysical Journal Supplement Series Pub Date : 2025-02-25 DOI: 10.3847/1538-4365/adaf17

P. Swaczyna, M. Bzowski, M. A. Kubiak

{"title":"Production and Loss Processes of Hydrogen Energetic Neutral Atoms in the Heliosphere from 5 eV–500 keV","authors":"P. Swaczyna, M. Bzowski, M. A. Kubiak","doi":"10.3847/1538-4365/adaf17","DOIUrl":"https://doi.org/10.3847/1538-4365/adaf17","url":null,"abstract":"Abstract Energetic neutral atom (ENA) observations provide valuable insights into the plasma conditions in the heliosphere and the surrounding interstellar medium. Unlike plasma detectors, which measure charged particles tied to the magnetic fields at their location, ENA detectors capture former ions that were neutralized in distant regions and traverse the heliosphere in straight trajectories. ENA fluxes near the Sun represent line-of-sight integrals of parent ion fluxes multiplied by neutralization (production) rates and reduced by the probability of ENA reionization (loss) processes. So far, most ENA analyses have focused on charge exchange between hydrogen atoms and protons as the primary source of ENAs. Here, we examine various ENA production and loss processes throughout the heliosphere in the broad energy range (5 eV to 500 keV) encompassing the next-generation ENA instruments aboard the Interstellar Mapping and Acceleration Probe mission. Our study considers binary collisions involving the most abundant species: protons, electrons, α -particles, He + ions, photons, as well as hydrogen and helium atoms. Our findings indicate that, in addition to ENAs produced by charge exchange of energetic protons with hydrogen atoms, a significant portion of high-energy ENAs originate from the charge exchange with helium atoms. Below 10 keV, the dominant ENA loss processes are charge exchange collisions with protons and photoionization. However, stripping ionization processes, e.g., from collisions with ambient interstellar neutral hydrogen, become the main loss mechanism for higher energies because the charge exchange rate rapidly decreases.","PeriodicalId":22368,"journal":{"name":"The Astrophysical Journal Supplement Series","volume":"277 1","pages":"17-17"},"PeriodicalIF":0.0,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147908976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Gas-phase Formation of Large, Astronomically Relevant Polycyclic Aromatic Hydrocarbon Clusters 大型天文相关的多环芳烃团簇气相形成

The Astrophysical Journal Supplement Series Pub Date : 2025-01-01 DOI: 10.3847/1538-4365/ad9263

Yanan Ge, Congcong Zhang, Xiaoyi Hu, Jia Liu, Liping Qin, Junfeng Zhen

{"title":"Gas-phase Formation of Large, Astronomically Relevant Polycyclic Aromatic Hydrocarbon Clusters","authors":"Yanan Ge, Congcong Zhang, Xiaoyi Hu, Jia Liu, Liping Qin, Junfeng Zhen","doi":"10.3847/1538-4365/ad9263","DOIUrl":"https://doi.org/10.3847/1538-4365/ad9263","url":null,"abstract":"Abstract As one class of important carbon reservoirs in interstellar clouds, large polycyclic aromatic hydrocarbons (PAHs) and their derivative species play an important role in the formation and evolution of interstellar carbonaceous compounds. To understand these chemical routes, the gas-phase ion–molecular collision reaction between large, astronomically relevant PAH (dicoronylene, DC, C 48 H 20 ) cations and smaller neutral superhydrogenated PAHs (2, 3–benzofluorene, C 17 H 12 ) are investigated. Series of large DC/2, 3–benzofluorene cluster cations (e.g., [(C 17 H 12 ) 6 C 48 H 14 ] + , 236 atoms, and [(C 17 H 12 ) 5 C 48 ] + , 193 atoms) are efficiently formed by gas-phase condensation under laser irradiation conditions. With theoretical calculations, the structure of newly formed DC/2, 3-benzofluorene cluster cations and the bonding energy for these formation reactions are obtained. Moreover, the IR spectra of DC/2, 3-benzofluorene cluster cations are also calculated. The gas-phase reactions between large PAH species occur relatively easily, resulting in a very large number of reactions and very complex molecular clusters. The adduct processes and the formed molecular structure relatively depend on the carbon reaction sites. The carbon edge sites have different chemical reactivity, which may affect the abundance of these relevant interstellar substances. Furthermore, intermolecular hydrogen transfer plays an important role in cluster formation processes, which can lead the newly formed clusters to become more stable. We infer that small superhydrogenated PAH molecules (e.g., 2, 3-benzofluorene) can effectively aggregate on the large PAH molecules (e.g., dehydrogenated DC cations or carbon clusters) in the gas phase, which provides proposed chemical-evolution routes (ion–molecular reaction pathways) for the formation of the nanometer-sized dust grains in a bottom-up process (in building block pathways) in the interstellar medium.","PeriodicalId":22368,"journal":{"name":"The Astrophysical Journal Supplement Series","volume":"276 1","pages":"26-26"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147910631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optical Variability of Gaia CRF3 Sources with Robust Statistics and the 5000 Most Variable Quasars 盖亚 CRF3 来源的光学变异性与鲁棒统计以及 5000 颗变异最大的类星体

The Astrophysical Journal Supplement Series Pub Date : 2024-09-18 DOI: 10.3847/1538-4365/ad697b

Valeri V. Makarov

{"title":"Optical Variability of Gaia CRF3 Sources with Robust Statistics and the 5000 Most Variable Quasars","authors":"Valeri V. Makarov","doi":"10.3847/1538-4365/ad697b","DOIUrl":"https://doi.org/10.3847/1538-4365/ad697b","url":null,"abstract":"Using the light-curve time-series data for more than 11.7 million variable sources published in the Gaia Data Release 3, the average magnitudes, colors, and variability parameters have been computed for 0.836 million Gaia CRF objects, which are mostly quasars and active galactic nuclei (AGNs). To mitigate the effects of occasional flukes in the data, robust statistical measures have been employed: namely, the median, median absolute deviation, and Spearman correlation. We find that the majority of the CRF sources have moderate amplitudes of variability in the Gaia G band just below 0.1 mag. The heavy-tailed distribution of variability amplitudes (quantified as robust standard deviations) does not find a single analytical form, but is closer to Maxwell distribution with a scale of 0.078 mag. The majority of CRF sources have positive correlations between G magnitude and GBP−GRP colors, meaning that these quasars and AGNs become bluer when they are brighter. The variations in the GBP and GRP bands are also mostly positively correlated. Dependencies of all variability parameters with cosmological redshift are fairly flat for the more accurate estimates above redshift 0.7, while the median color shows strong systematic variations with redshift. Using a robust normalized score of magnitude deviations, a sample of the 5000 most variable quasars is selected and published. The intersection of this sample with the ICRF3 catalog shows a much higher rate of strongly variable quasars (mostly blazars) in ICRF3.","PeriodicalId":22368,"journal":{"name":"The Astrophysical Journal Supplement Series","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142267890","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

Identifying Light-curve Signals with a Deep-learning-based Object Detection Algorithm. II. A General Light-curve Classification Framework 利用基于深度学习的物体检测算法识别光曲线信号。II.一般光曲线分类框架

The Astrophysical Journal Supplement Series Pub Date : 2024-09-18 DOI: 10.3847/1538-4365/ad62fd

Kaiming Cui, D. J. Armstrong and Fabo Feng

{"title":"Identifying Light-curve Signals with a Deep-learning-based Object Detection Algorithm. II. A General Light-curve Classification Framework","authors":"Kaiming Cui, D. J. Armstrong and Fabo Feng","doi":"10.3847/1538-4365/ad62fd","DOIUrl":"https://doi.org/10.3847/1538-4365/ad62fd","url":null,"abstract":"Vast amounts of astronomical photometric data are generated from various projects, requiring significant effort to identify variable stars and other object classes. In light of this, a general, widely applicable classification framework would simplify the process of designing specific classifiers for various astronomical objects. We present a novel deep-learning framework for classifying light curves using a weakly supervised object detection model. Our framework identifies the optimal windows for both light curves and power spectra automatically, and zooms in on their corresponding data. This allows for automatic feature extraction from both time and frequency domains, enabling our model to handle data across different scales and sampling intervals. We train our model on data sets obtained from Kepler, TESS, and Zwicky Transient Facility multiband observations of variable stars and transients. We achieve an accuracy of 87% for combined variable and transient events, which is comparable to the performance of previous feature-based models. Our trained model can be utilized directly for other missions, such as the All-sky Automated Survey for Supernovae, without requiring any retraining or fine-tuning. To address known issues with miscalibrated predictive probabilities, we apply conformal prediction to generate robust predictive sets that guarantee true-label coverage with a given probability. Additionally, we incorporate various anomaly detection algorithms to empower our model with the ability to identify out-of-distribution objects. Our framework is implemented in the Deep-LC toolkit, which is an open-source Python package hosted on Github (https://github.com/ckm3/Deep-LC) and PyPI.","PeriodicalId":22368,"journal":{"name":"The Astrophysical Journal Supplement Series","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142267844","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

Metrics of Astrometric Variability in the International Celestial Reference Frame. I. Statistical Analysis and Selection of the Most Variable Sources 国际天体参照系中的天体测量变异度量。I. 统计分析和最大变异源的选择

The Astrophysical Journal Supplement Series Pub Date : 2024-09-18 DOI: 10.3847/1538-4365/ad6772

Phil Cigan, Valeri V. Makarov, Nathan J. Secrest, David Gordon, Megan C. Johnson and Sebastien Lambert

引用次数: 0

Forecast of Foreground Cleaning Strategies for AliCPT-1 AliCPT-1 的前景清洁策略预测

The Astrophysical Journal Supplement Series Pub Date : 2024-09-17 DOI: 10.3847/1538-4365/ad5c63

Junzhou Zhang, Shamik Ghosh, Jiazheng Dou, Yang Liu, Siyu Li, Jiming Chen, Jiaxin Wang, Zhaoxuan Zhang, Jacques Delabrouille, Mathieu Remazeilles, Chang Feng, Bin Hu, Hao Liu, Larissa Santos, Pengjie Zhang, Wen Zhao, Le Zhang, Zhi-Qi Huang, Hong Li and Xinmin Zhang

{"title":"Forecast of Foreground Cleaning Strategies for AliCPT-1","authors":"Junzhou Zhang, Shamik Ghosh, Jiazheng Dou, Yang Liu, Siyu Li, Jiming Chen, Jiaxin Wang, Zhaoxuan Zhang, Jacques Delabrouille, Mathieu Remazeilles, Chang Feng, Bin Hu, Hao Liu, Larissa Santos, Pengjie Zhang, Wen Zhao, Le Zhang, Zhi-Qi Huang, Hong Li and Xinmin Zhang","doi":"10.3847/1538-4365/ad5c63","DOIUrl":"https://doi.org/10.3847/1538-4365/ad5c63","url":null,"abstract":"We report the test results of several independent foreground cleaning pipelines used in the Ali CMB Polarization Telescope experiment (AliCPT-1), a high-altitude cosmic microwave background (CMB) imager in the Northern Hemisphere with thousands of detectors dedicated to the search for a primordial CMB polarization B-mode signature. Based on simulated data from four detector modules and a single season of observation, which we refer to as Data Challenge 1 (DC1), we employ different and independent pipelines to examine the robustness and effectiveness of estimates on foreground parameters and primordial B-mode detection. The foreground cleaning strategies used in the pipelines include the parametric method of template fitting (TF) and the nonparametric methods of constrained internal linear combination (cILC), analytical blind separation (ABS), and generalized least squares (GLS). We examine the impact of possible foreground residuals on the estimate of the CMB tensor-to-scalar ratio (r) for each pipeline by changing the contamination components in the simulated maps and varying the foreground models and sky patches for various tests. According to the DC1 data with the simulation input value rtrue = 0.023, the foreground residual contamination levels in the TF/ABS/cILC/GLS pipelines are well within the corresponding statistical errors at the 2σ level. Furthermore, by utilizing the tension estimator, which helps identify significant residual foreground contamination in the detection of the primordial B-mode signal by quantifying the discrepancy between various r measurements, we conclude that the presence of small foreground residuals does not lead to any significant inconsistency in the estimation of r.","PeriodicalId":22368,"journal":{"name":"The Astrophysical Journal Supplement Series","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142267889","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

Catalog of Proper Orbits for 1.25 Million Main-belt Asteroids and Discovery of 136 New Collisional Families 125 万颗主带小行星的适当轨道表和 136 个新碰撞家族的发现

The Astrophysical Journal Supplement Series Pub Date : 2024-09-17 DOI: 10.3847/1538-4365/ad675c

David Nesvorný, Fernando Roig, David Vokrouhlický and Miroslav Brož

{"title":"Catalog of Proper Orbits for 1.25 Million Main-belt Asteroids and Discovery of 136 New Collisional Families","authors":"David Nesvorný, Fernando Roig, David Vokrouhlický and Miroslav Brož","doi":"10.3847/1538-4365/ad675c","DOIUrl":"https://doi.org/10.3847/1538-4365/ad675c","url":null,"abstract":"The proper elements of asteroids are obtained from the instantaneous orbital elements by removing periodic oscillations produced by gravitational interactions with planets. They are unchanged in time, at least if chaotic dynamics and nongravitational forces could be ignored, and can therefore be used to identify fragments of major collisions (asteroid families) that happened eons ago. Here we present a new catalog of proper elements for 1.25 × 106 main-belt asteroids. We explain the methodology, evaluate uncertainties, and discuss how the new catalog can be used to identify asteroid families. A systematic search for families yielded 153 cases not reported in Nesvorný et al.—17 of these cases were identified in various other publications, and 136 cases are new discoveries. There are now 274 families in the asteroid belt in total (plus a handful of families in the resonant Hilda population). We analyzed several compact families in detail. The new family around the middle-belt asteroid (9332) 1990SB1 (nine members) is the youngest family found so far (estimated formation only 16–17 kyr ago). The new families (1217) Maximiliana, (6084) Bascom, (10164) Akusekijima, and (70208) 1999RX33 all formed 0.5–2.5 Myr ago. The (2110) Moore–Sitterly family is a close pair of relatively large bodies, 2110 and 44612, and 15 small members all located sunward from 2110 and 44612, presumably a consequence of the Yarkovsky drift over the estimated family age (1.2–1.5 Myr). A systematic characterization of the new asteroid families is left for future work.","PeriodicalId":22368,"journal":{"name":"The Astrophysical Journal Supplement Series","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142267891","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

Identifying Mergers in the Legacy Surveys with Few-shot Learning 在传统调查中利用 "少量学习 "识别合并

The Astrophysical Journal Supplement Series Pub Date : 2024-09-16 DOI: 10.3847/1538-4365/ad66ca

Shoulin Wei, Xiang Song, Zhijian Zhang, Bo Liang, Wei Dai, Wei Lu and Junxi Tao

{"title":"Identifying Mergers in the Legacy Surveys with Few-shot Learning","authors":"Shoulin Wei, Xiang Song, Zhijian Zhang, Bo Liang, Wei Dai, Wei Lu and Junxi Tao","doi":"10.3847/1538-4365/ad66ca","DOIUrl":"https://doi.org/10.3847/1538-4365/ad66ca","url":null,"abstract":"Galaxy mergers exert a pivotal influence on the evolutionary trajectory of galaxies and the expansive development of cosmic structures. The primary challenge encountered in machine learning–based identification of merging galaxies arises from the scarcity of meticulously labeled data sets specifically dedicated to merging galaxies. In this paper, we propose a novel framework utilizing few-shot learning techniques to identify galaxy mergers in the Legacy Surveys. Few-shot learning enables effective classification of merging galaxies even when confronted with limited labeled training samples. We employ a deep convolutional neural network architecture trained on data sets sampled from Galaxy Zoo Decals to learn essential features and generalize to new instances. Our experimental results demonstrate the efficacy of our approach, achieving high accuracy and precision in identifying galaxy mergers with few labeled training samples. Furthermore, we investigate the impact of various factors, such as the number of training samples and network architectures, on the performance of the few-shot learning model. The proposed methodology offers a promising avenue for automating the identification of galaxy mergers in large-scale surveys, facilitating the comprehensive study of galaxy evolution and structure formation. In pursuit of identifying galaxy mergers, our methodology is applied to analyze the Data Release 9 of the Dark Energy Spectroscopic Instrument Legacy Imaging Surveys. As a result, we have unveiled an extensive catalog encompassing 648,183 galaxy merger candidates. We publicly release the catalog alongside this paper.","PeriodicalId":22368,"journal":{"name":"The Astrophysical Journal Supplement Series","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142267892","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

Dependence of Virial Factors on Optical Spectral Properties of Active Galactic Nuclei 室温系数与活动星系核光学光谱特性的关系

The Astrophysical Journal Supplement Series Pub Date : 2024-09-16 DOI: 10.3847/1538-4365/ad61e3

Sen Yang, Pu Du and Jian-Min Wang

{"title":"Dependence of Virial Factors on Optical Spectral Properties of Active Galactic Nuclei","authors":"Sen Yang, Pu Du and Jian-Min Wang","doi":"10.3847/1538-4365/ad61e3","DOIUrl":"https://doi.org/10.3847/1538-4365/ad61e3","url":null,"abstract":"Reverberation mapping (RM) has long been a powerful tool for measuring the masses of supermassive black holes (SMBHs) at the centers of active galactic nuclei (AGNs), but the precision of these mass measurements depends on the so-called virial factors. It has been demonstrated that the virial factors exhibit significant diversity, spanning approximately 1–2 orders of magnitude across different AGNs. However, the underlying physical drivers for the diversity have not yet been finalized. Here, adopting the SMBH mass–spheroid luminosity relations of inactive galaxies with different bulge classifications, we calibrate the virial factors corresponding to the AGNs with pseudobulges (PBs) and classical bulges (or elliptical hosts, CBs) using the latest nearby RM sample. We investigate the correlations between virial factors and the AGN spectral properties, and find that for both PB and CB samples, the FWHM-based virial factors exhibit significant anticorrelations with the emission-line widths and profiles, while the σline-based virial factors only show moderate anticorrelations with line widths for PBs. We attribute these correlations mainly to the inclination angle or opening angle of the broad-line regions. Moreover, we establish new relations to give more precise virial factors and, in combination with the latest iron-corrected radius–luminosity relation, tentatively develop new single-epoch estimators of SMBH masses, which enable more accurate measurements of SMBH masses in large AGN samples.","PeriodicalId":22368,"journal":{"name":"The Astrophysical Journal Supplement Series","volume":"104 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142267893","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