{"paper":{"title":"Hydrogen lines in LAMOST low resolution spectra of RR Lyrae stars","arxiv_id":"1306.3754","primary_cat":"astro-ph.SR","submitted_at":"2013-06-17T07:23:16+00:00","version_compiled":"v2"},"notice":"Every quoted sentence is the authors' text from the arXiv listing abstract. Labels and probabilities are the outputs of classifier-1.13-20260917 on the question bank abstract-p1-20260923, exactly as returned. 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spectra.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.27,"main_claim_p":0.02,"quantitative":true,"quantitative_p":0.98,"role_probabilities":{"gap":0.0,"method":0.02,"result":0.0,"background":0.98,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.0}},{"i":2,"p":0.58,"id":"s2","own":true,"role":"result","text":"By cross-checking with a large time series photometric database of RR Lyrae stars in high Galactic latitude regions, we found a total number of 157 stars that have been observed with LAMOST.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.94,"main_claim_p":0.04,"quantitative":true,"quantitative_p":0.99,"role_probabilities":{"gap":0.0,"method":0.32,"result":0.58,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.1,"interpretation":0.0}},{"i":3,"p":0.99,"id":"s3","own":true,"role":"result","text":"In this sample, we successfully captured three RR Lyrae stars in the fast expansion phase, all of them showing significant hypersonic shock wave features in the spectra.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.96,"main_claim_p":0.32,"quantitative":true,"quantitative_p":0.98,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.99,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.01,"interpretation":0.0}},{"i":4,"p":0.46,"id":"s4","own":true,"role":"interpretation","text":"By fitting the H{\\alpha} line shape, we determine that the emission features seen within the broader H{\\alpha} absorption line suggest hypersonic relative motions in the atmospheres of these three objects.","hedge":{"p":0.92,"label":"hedged_possibility"},"own_p":0.96,"main_claim_p":0.33,"quantitative":false,"quantitative_p":0.18,"role_probabilities":{"gap":0.0,"method":0.12,"result":0.41,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.01,"interpretation":0.46}},{"i":5,"p":1.0,"id":"s5","own":false,"role":"future_work","text":"With a further LAMOST survey of millions of stars, we will capture a large sample of 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