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相关论文: Detection of 2460 SB2 candidates in the LAMOST-MRS…

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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,…

太阳与恒星天体物理 · 物理学 2023-10-19 Mikhail Kovalev , Zenghua Zhou , Xuefei Chen , Zhanwen Han

We report on a data-driven spectral model that we have developed for the identification of double-lined spectroscopic binary stars (SB2s) in the LAMOST low-resolution survey (R$\sim$1800). Employing simultaneous fitting with both…

太阳与恒星天体物理 · 物理学 2024-10-11 Junhui Liu , Bo Zhang , Jianfeng Wu , Yuan-Sen Ting

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…

天体物理仪器与方法 · 物理学 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

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…

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…

太阳与恒星天体物理 · 物理学 2023-12-11 Mikhail Kovalev , Mariyam Ahmed , Randa Asa'd

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…

太阳与恒星天体物理 · 物理学 2021-12-08 Mikhail Kovalev , Ilya Straumit

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.…

太阳与恒星天体物理 · 物理学 2026-01-21 Zhoulin Wang , Mikhail Kovalev , Jianping Xiong , Yanjun Guo , Xuefei Chen

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…

太阳与恒星天体物理 · 物理学 2021-10-04 Chun-qian Li , Jian-rong Shi , Hong-liang Yan , Jian-Ning Fu , Jia-dong Li , Yong-Hui Hou

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…

太阳与恒星天体物理 · 物理学 2023-07-19 Mikhail Kovalev , Olivier R. Hainaut , Xuefei Chen , Zhanwen Han

We present MESS, a fully automated algorithm for identifying and characterizing double-lined spectroscopic binaries (SB2) in large databases of multi-epoch spectra. MESS extends the two-dimensional TODCOR approach to a global multi-epoch…

太阳与恒星天体物理 · 物理学 2026-02-06 Gil Nachmani , Simchon Faigler , Tsevi Mazeh

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 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…

太阳与恒星天体物理 · 物理学 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

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…

太阳与恒星天体物理 · 物理学 2024-05-17 Hao-Bin Liu , Wei-Min Gu , Zhi-Xiang Zhang , Tuan Yi , Jin-Zhong Liu , Mouyuan Sun

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 have examined the radial velocity data for stars spectroscopically observed by the Sloan Digital Sky Survey (SDSS) more than once to investigate the incidence of spectroscopic binaries, and to evaluate the accuracy of the SDSS stellar…

A spectroscopic technique employing an iodine absorption cell (I_2) to superimpose a reference spectrum onto a stellar spectrum is currently the most widely adopted approach to obtain precision radial velocities of solar-type stars. It has…

天体物理学 · 物理学 2009-11-10 Maciej Konacki

We devise a new method for the detection of double-lined binary stars in a sample of the Radial Velocity Experiment (RAVE) survey spectra. The method is both tested against extensive simulations based on synthetic spectra, and compared to…

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…

太阳与恒星天体物理 · 物理学 2022-07-08 A. Frasca , G. Catanzaro , I. Busà , P. Guillout , J. Alonso-Santiago , C. Ferrara , M. Giarrusso , M. Munari , F. Leone

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…

We present radial velocity measurements for 70 high confidence, and 34 potential binary systems in fields containing the Perseus Molecular Cloud, Pleiades, NGC 2264, and the Orion A star forming region. 18 of these systems have been…

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