{"paper":{"title":"Orientation Parameters of the Cepheid System in the Galaxy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Vadim Bobylev","submitted_at":"2013-10-27T12:02:16Z","abstract_excerpt":"Based on the distribution of long-period Cepheids, we have redetermined the orientation parameters of their principal plane in the Galaxy. Based on 299 Cepheids with heliocentric distances $r<20$ kpc and pulsation periods $P\\geq5^d$, we have found the directions of the three principal axes of the position ellipsoid:\n  $L_1=281.0\\pm0.1^\\circ,$ $B_1=-1.9\\pm0.1^\\circ,$\n  $L_2= 11.0\\pm0.7^\\circ,$ $B_2=0.2\\pm0.1^\\circ$ and\n  $L_3=275.9\\pm0.7^\\circ,$ $B_3=88.1\\pm0.1^\\circ$. Thus, the line of nodes $l_\\Omega=L_3+90^\\circ=5.9^\\circ$ is very close to the direction to the Galactic center; the Cepheid sy"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.7186","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}