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Related papers: Double-lined Spectroscopic Binaries from the LAMOS…

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We developed a convolutional neural network (CNN) model to distinguish the double-lined spectroscopic binaries (SB2s) from others based on single exposure medium-resolution spectra ($R\sim 7,500$). The training set consists of a large set…

We present a new method for the detection of double-lined spectroscopic binaries (SB2) using $v\sin{i}$ values from spectral fits. The method is tested on synthetic and real spectra from LAMOST-MRS. It can reliably detect SB2 candidates for…

Solar and Stellar Astrophysics · Physics 2022-10-12 Mikhail Kovalev , Chen Xuefei , Han Zhanwen

We use an updated method for the detection of double-lined spectroscopic binaries (SB2) using $v \sin{i}$ values from spectral fits. The method is applied to all spectra from LAMOST-MRS. Using this method, we detect 12426 SB2 candidates,…

Solar and Stellar Astrophysics · Physics 2023-10-19 Mikhail Kovalev , Zenghua Zhou , Xuefei Chen , Zhanwen Han

The period, mass ratio, eccentricity, and other orbital parameters are fundamental for investigating binary star evolution. However, the number of binaries with known orbital parameters remains limited. Utilizing the LAMOST-MRS survey, we…

Solar and Stellar Astrophysics · Physics 2025-04-17 Sufen Guo , Mikhail Kovalev , Jiao Li , Guoliang Lu , Shi Jia , Zhenwei Li , Jiangdan Li , Jianping Xiong , Mingkuan Yang , Tongyu He , Xuefei Chen , Zhanwen Han

APOGEE spectra offer $\lesssim$1 km s$^{-1}$ precision in the measurement of stellar radial velocities (RVs). This holds even when multiple stars are captured in the same spectrum, as happens most commonly with double-lined spectroscopic…

We utilize a hybrid approach that integrates the traditional cross-correlation function (CCF) and machine learning to detect spectroscopic multi-systems, specifically focusing on double-line spectroscopic binary (SB2). Based on the ninth…

Instrumentation and Methods for Astrophysics · Physics 2024-11-25 Shan-shan Li , Chun-qian Li , Chang-hua Li , Dong-wei Fan , Yun-fei Xu , Lin-ying Mi , Chen-zhou Cui , Jian-rong Shi

The combination of the final version of the RAVE spectroscopic survey data release 6 with radial velocities and astrometry from Gaia DR2 allows us to identify and create a catalog of single lined binary star candidates (SB1), their inferred…

The stellar spectra from LAMOST Medium Resolution Survey can be used to search for compact objects in binaries. The LAMOST DR10 catalog includes > 980, 000 targets with multiple medium resolution spectra. We select the targets with large or…

Solar and Stellar Astrophysics · Physics 2024-05-17 Hao-Bin Liu , Wei-Min Gu , Zhi-Xiang Zhang , Tuan Yi , Jin-Zhong Liu , Mouyuan Sun

We present a method for identifying false positive double-lined spectroscopic binary (SB2) candidates by analysing medium-resolution survey spectra from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) DR10.…

Solar and Stellar Astrophysics · Physics 2026-01-21 Zhoulin Wang , Mikhail Kovalev , Jianping Xiong , Yanjun Guo , Xuefei Chen

Binary stellar systems form a large fraction of the Galaxy's stars. They are useful as laboratories for studying the physical processes taking place within stars, and must be correctly taken into account when observations of stars are used…

Binary stars are prevalent yet challenging to detect. We present a novel approach using convolutional neural networks (CNNs) to identify binary stars from low-resolution spectra obtained by the LAMOST survey. The CNN is trained on a dataset…

Solar and Stellar Astrophysics · Physics 2025-02-25 Yingjie Jing , Tian-Xiang Mao , Jie Wang , Chao Liu , Xiaodian Chen

In this paper we present a spectroscopic study of six double-lined binaries, five of which were recently discovered in a high-resolution spectroscopic survey of optical counterparts of stellar X-ray sources. Thanks to high-resolution…

Solar and Stellar Astrophysics · Physics 2022-07-08 A. Frasca , G. Catanzaro , I. Busà , P. Guillout , J. Alonso-Santiago , C. Ferrara , M. Giarrusso , M. Munari , F. Leone

Context. This work is part of a long-term spectroscopic study of a sample of 30 multiple stars with early-type components. In this second paper we present the results of six multiple systems in which new stellar components have been…

Solar and Stellar Astrophysics · Physics 2014-09-05 M. E. Veramendi , J. F. González

The LAMOST Medium-Resolution Spectroscopic Survey (LAMOST-MRS) provides an unprecedented opportunity for detecting multi-line spectroscopic systems. Based on the method of Cross-Correlation Function (CCF) and successive derivatives, we…

Solar and Stellar Astrophysics · Physics 2021-10-04 Chun-qian Li , Jian-rong Shi , Hong-liang Yan , Jian-Ning Fu , Jia-dong Li , Yong-Hui Hou

We have developed a new method for spectral analysis of binaries. Our method successfully identifies SB2 candidates from high-resolution Gaia-ESO spectra. Compared to the commonly used cross-correlation function analysis, it works for…

Solar and Stellar Astrophysics · Physics 2021-12-08 Mikhail Kovalev , Ilya Straumit

We study the prospects of searching for black hole (BH) binary systems with a stellar-mass BH and a non-compact visible companion, by utilizing the spectroscopic data of Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST). We…

Solar and Stellar Astrophysics · Physics 2020-01-08 Tuan Yi , Mouyuan Sun , Wei-Min Gu

This work analyzes four Sun-like double-lined spectroscopic binary (SB2) systems by combining visual and spectroscopic observational data with Al-Wardat's atmospheric modeling method to accurately determine their fundamental parameters. For…

In this paper we detect double-lined spectroscopic binaries (SB2) in five open clusters: NGC 2243, NGC 2420, NGC 3532, NGC 6253 and NGC 6705 (M 11) using a method based on high values of the projected rotational velocity when they are…

Solar and Stellar Astrophysics · Physics 2023-12-11 Mikhail Kovalev , Mariyam Ahmed , Randa Asa'd

We present the detection of false positive double-lined spectroscopic binaries candidates (SB2) using medium-resolution survey (MRS) spectra from the one time-domain field of LAMOST data release 10 (DR10). The secondary component in all…

Solar and Stellar Astrophysics · Physics 2023-07-19 Mikhail Kovalev , Olivier R. Hainaut , Xuefei Chen , Zhanwen Han

LAMOST-MRS-B is one of the sub-surveys of LAMOST medium-resolution (R~7500) spectroscopic survey. It aims at studying the statistical properties (e.g., binary fraction, orbital period distribution, mass ratio distribution) of binary stars…

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