{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:67HQ7EVKF6ACKZ723ZKJIFPFXE","short_pith_number":"pith:67HQ7EVK","schema_version":"1.0","canonical_sha256":"f7cf0f92aa2f802567fade549415e5b90009e0f662f7323743fa54e194f37d7c","source":{"kind":"arxiv","id":"1702.04352","version":1},"attestation_state":"computed","paper":{"title":"Near-infrared spectroscopy of 5 ultra-massive galaxies at 1.7 < z < 2.7","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Adam Muzzin, Britt Lundgren, Danilo Marchesini, David Wake, Erin Kado-Fong, Gabriel Brammer, Gregory Rudnick, Ivo Labb\\'e, Katherine Whitaker, Mauro Stefanon, Pieter van Dokkum, Rachel Bezanson, Rik Williams, Ryan Quadri, Tomer Tal, Z. Cemile Marsan","submitted_at":"2017-02-14T19:00:00Z","abstract_excerpt":"We present the results of a pilot near-infrared (NIR) spectroscopic campaign of five very massive galaxies ($\\log(\\text{M}_\\star/\\text{M}_\\odot)>11.45$) in the range of $1.7<z<2.7$. We measure an absorption feature redshift for one galaxy at $z_\\text{spec}=2.000\\pm0.006$. For the remaining galaxies, we combine the photometry with the continuum from the spectra to estimate continuum redshifts and stellar population properties. We define a continuum redshift ($z_{\\rm cont}$ ) as one in which the redshift is estimated probabilistically using EAZY from the combination of catalog photometry and the"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1702.04352","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-02-14T19:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"7b6c2de89cac1729ff1ec5444afa969136dea63804dc3574562f9a919a81bf44","abstract_canon_sha256":"75d9fd945acaa164b4288608b58cb81cd55fef79b0d29e8f8ac1e07420146e8d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:46:28.990934Z","signature_b64":"M0Lno5BnPMuNL5LDN1KDp2MH6SQkWyzHNsSsETeBvwvjmVZkwxwtWxwiwrMcMHd1frdQlqCfyx6IpFNXU5i6AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f7cf0f92aa2f802567fade549415e5b90009e0f662f7323743fa54e194f37d7c","last_reissued_at":"2026-05-18T00:46:28.990346Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:46:28.990346Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Near-infrared spectroscopy of 5 ultra-massive galaxies at 1.7 < z < 2.7","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Adam Muzzin, Britt Lundgren, Danilo Marchesini, David Wake, Erin Kado-Fong, Gabriel Brammer, Gregory Rudnick, Ivo Labb\\'e, Katherine Whitaker, Mauro Stefanon, Pieter van Dokkum, Rachel Bezanson, Rik Williams, Ryan Quadri, Tomer Tal, Z. Cemile Marsan","submitted_at":"2017-02-14T19:00:00Z","abstract_excerpt":"We present the results of a pilot near-infrared (NIR) spectroscopic campaign of five very massive galaxies ($\\log(\\text{M}_\\star/\\text{M}_\\odot)>11.45$) in the range of $1.7<z<2.7$. We measure an absorption feature redshift for one galaxy at $z_\\text{spec}=2.000\\pm0.006$. For the remaining galaxies, we combine the photometry with the continuum from the spectra to estimate continuum redshifts and stellar population properties. We define a continuum redshift ($z_{\\rm cont}$ ) as one in which the redshift is estimated probabilistically using EAZY from the combination of catalog photometry and the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.04352","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1702.04352","created_at":"2026-05-18T00:46:28.990457+00:00"},{"alias_kind":"arxiv_version","alias_value":"1702.04352v1","created_at":"2026-05-18T00:46:28.990457+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.04352","created_at":"2026-05-18T00:46:28.990457+00:00"},{"alias_kind":"pith_short_12","alias_value":"67HQ7EVKF6AC","created_at":"2026-05-18T12:31:03.183658+00:00"},{"alias_kind":"pith_short_16","alias_value":"67HQ7EVKF6ACKZ72","created_at":"2026-05-18T12:31:03.183658+00:00"},{"alias_kind":"pith_short_8","alias_value":"67HQ7EVK","created_at":"2026-05-18T12:31:03.183658+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/67HQ7EVKF6ACKZ723ZKJIFPFXE","json":"https://pith.science/pith/67HQ7EVKF6ACKZ723ZKJIFPFXE.json","graph_json":"https://pith.science/api/pith-number/67HQ7EVKF6ACKZ723ZKJIFPFXE/graph.json","events_json":"https://pith.science/api/pith-number/67HQ7EVKF6ACKZ723ZKJIFPFXE/events.json","paper":"https://pith.science/paper/67HQ7EVK"},"agent_actions":{"view_html":"https://pith.science/pith/67HQ7EVKF6ACKZ723ZKJIFPFXE","download_json":"https://pith.science/pith/67HQ7EVKF6ACKZ723ZKJIFPFXE.json","view_paper":"https://pith.science/paper/67HQ7EVK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1702.04352&json=true","fetch_graph":"https://pith.science/api/pith-number/67HQ7EVKF6ACKZ723ZKJIFPFXE/graph.json","fetch_events":"https://pith.science/api/pith-number/67HQ7EVKF6ACKZ723ZKJIFPFXE/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/67HQ7EVKF6ACKZ723ZKJIFPFXE/action/timestamp_anchor","attest_storage":"https://pith.science/pith/67HQ7EVKF6ACKZ723ZKJIFPFXE/action/storage_attestation","attest_author":"https://pith.science/pith/67HQ7EVKF6ACKZ723ZKJIFPFXE/action/author_attestation","sign_citation":"https://pith.science/pith/67HQ7EVKF6ACKZ723ZKJIFPFXE/action/citation_signature","submit_replication":"https://pith.science/pith/67HQ7EVKF6ACKZ723ZKJIFPFXE/action/replication_record"}},"created_at":"2026-05-18T00:46:28.990457+00:00","updated_at":"2026-05-18T00:46:28.990457+00:00"}