{"paper":{"title":"New insights on the Galactic Bulge Initial Mass Function","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"A. Calamida (STScI), A. Pietrinferni (INAF-OACTe), H. E. Bond (STScI / Pennsylvania State Univ.), H. Ferguson (STScI), I. Ferraro (INAF-OAR), J. Anderson (STScI), J. Valenti (STScI), K. C. Sahu (STScI), M. Cignoni (STScI), M. Gennaro (STScI), M. Livio (STScI), M. Salaris (Astrophysics Research Institute / Univ. of Liverpool), N. Kains (STScI), R. Buonanno (Univ. of Rome Tor Vergata / INAF-OACTe), S. Casertano (STScI), S. Cassisi (INAF-OACTe), T. M. Brown (STScI), W. Clarkson (Univ. of Michigan-Dearborn)","submitted_at":"2015-05-26T20:27:30Z","abstract_excerpt":"We have derived the Galactic bulge initial mass function of the SWEEPS field in the mass range 0.15 $< M/M_{\\odot}<$ 1.0, using deep photometry collected with the Advanced Camera for Surveys on the Hubble Space Telescope. Observations at several epochs, spread over 9 years, allowed us to separate the disk and bulge stars down to very faint magnitudes, F814W $\\sim$ 26 mag, with a proper-motion accuracy better than 0.5 mas/yr. This allowed us to determine the initial mass function of the pure bulge component uncontaminated by disk stars for this low-reddening field in the Sagittarius window. In "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.07128","kind":"arxiv","version":2},"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"}