SATURN combines neural network emulation of non-LTE spectra with MCMC fitting to derive stellar parameters and abundances for OB stars including binaries, showing good agreement with prior literature on benchmarks.
LAMOST Medium-Resolution Spectroscopic Survey (LAMOST-MRS): Scientific goals and survey plan
7 Pith papers cite this work, alongside 45 external citations. Polarity classification is still indexing.
7
Pith papers citing it
45
external citations · Pith
abstract
Since September 2018, LAMOST starts a new 5-year medium-resolution spectroscopic survey (MRS) using bright/gray nights. We present the scientific goals of LAMOST-MRS and propose a near optimistic strategy of the survey. A complete footprint is also provided. Not only the regular medium-resolution survey, but also a time-domain spectroscopic survey is being conducted since 2018 and will be end in 2023. According to the detailed survey plan, we expect that LAMOST-MRS can observe about 2 million stellar spectra with ~7500 and limiting magnitude of around G=15 mag. Moreover, it will also provide about 200 thousand stars with averagely 60-epoch observations and limiting magnitude of G~14 mag. These high quality spectra will give around 20 elemental abundances, rotational velocities, emission line profiles as well as precise radial velocity with uncertainty less than 1 km/s. With these data, we expect that LAMOST can effectively leverage sciences on stellar physics, e.g. exotic binary stars, detailed observation of many types of variable stars etc., planet host stars, emission nebulae, open clusters, young pre-main-sequence stars etc.
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astro-ph.SR 7representative citing papers
A single-lined spectroscopic orbit with P=21.8 days is detected around the contact binary V0885 Per, potentially the shortest outer period in a compact hierarchical triple.
Differential reddening across the field, not rotation, drives the extended main-sequence turn-off in NGC 1647, whose age is 203 million years from lithium measurements.
Revised solar photospheric abundances yield Z/X = 0.0187 with C, N, O at 8.46, 7.83, 8.69, preserving the solar modeling discrepancy and revealing a modest volatile-refractory offset from CI chondrites.
Multi-survey analysis of 157 hot subdwarf binaries yields 23 orbital solutions (11 new) whose mass-period distribution matches post-common-envelope systems, supporting a common-envelope origin.
LAMOST J052016.79+345651.7 is an EW contact binary with warm ionized gas from shock-driven outflows, cold circumstellar dust causing IR excess, and an evolutionary path toward a blue straggler via mass loss.
From LAMOST DR12, 504 classical Be stars are cataloged with 141 new, 14 RV-variable binaries, 60 RUWE-based candidates, 34 cluster members, and 37 runaways.
citing papers explorer
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Quantitative spectroscopy of single and multiple OB-type stars. Non-LTE spectrum analysis with machine learning
SATURN combines neural network emulation of non-LTE spectra with MCMC fitting to derive stellar parameters and abundances for OB stars including binaries, showing good agreement with prior literature on benchmarks.
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Shortest period for outer orbit in compact hierarchical triple? Discovery of SB1 around V0885 Per
A single-lined spectroscopic orbit with P=21.8 days is detected around the contact binary V0885 Per, potentially the shortest outer period in a compact hierarchical triple.
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NGC 1647: A young open cluster with a broad main sequence observed with LAMOST
Differential reddening across the field, not rotation, drives the extended main-sequence turn-off in NGC 1647, whose age is 203 million years from lithium measurements.
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The chemical make-up of the Sun: A 2020 vision
Revised solar photospheric abundances yield Z/X = 0.0187 with C, N, O at 8.46, 7.83, 8.69, preserving the solar modeling discrepancy and revealing a modest volatile-refractory offset from CI chondrites.
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Characterizing Orbital Parameters of Hot Subdwarf Binaries with Multiple Spectroscopic Surveys
Multi-survey analysis of 157 hot subdwarf binaries yields 23 orbital solutions (11 new) whose mass-period distribution matches post-common-envelope systems, supporting a common-envelope origin.
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LAMOST J052016.79+345651.7: An EW-type Binary with Emission Line Spectra and Circumstellar Material
LAMOST J052016.79+345651.7 is an EW contact binary with warm ionized gas from shock-driven outflows, cold circumstellar dust causing IR excess, and an evolutionary path toward a blue straggler via mass loss.
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Classical Be Stars and Classical Be Star Binaries from LAMOST DR12
From LAMOST DR12, 504 classical Be stars are cataloged with 141 new, 14 RV-variable binaries, 60 RUWE-based candidates, 34 cluster members, and 37 runaways.