{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:DCYA4CO7UURVVHCTHGXNWKGNBD","short_pith_number":"pith:DCYA4CO7","canonical_record":{"source":{"id":"1611.05052","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-15T21:03:55Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"f55a8cd44a9fffe179745f3297bfde8654bd383d1b1489b8c5c2ccdd5ce3702b","abstract_canon_sha256":"582f306d6c1773da10a7f3e30941d7b1cd02ffd9fe8b095222e19f20d64d0276"},"schema_version":"1.0"},"canonical_sha256":"18b00e09dfa5235a9c5339aedb28cd08ed2bcd05cee824229992f5671ddc09eb","source":{"kind":"arxiv","id":"1611.05052","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.05052","created_at":"2026-05-18T00:47:49Z"},{"alias_kind":"arxiv_version","alias_value":"1611.05052v2","created_at":"2026-05-18T00:47:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.05052","created_at":"2026-05-18T00:47:49Z"},{"alias_kind":"pith_short_12","alias_value":"DCYA4CO7UURV","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"DCYA4CO7UURVVHCT","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"DCYA4CO7","created_at":"2026-05-18T12:30:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:DCYA4CO7UURVVHCTHGXNWKGNBD","target":"record","payload":{"canonical_record":{"source":{"id":"1611.05052","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-15T21:03:55Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"f55a8cd44a9fffe179745f3297bfde8654bd383d1b1489b8c5c2ccdd5ce3702b","abstract_canon_sha256":"582f306d6c1773da10a7f3e30941d7b1cd02ffd9fe8b095222e19f20d64d0276"},"schema_version":"1.0"},"canonical_sha256":"18b00e09dfa5235a9c5339aedb28cd08ed2bcd05cee824229992f5671ddc09eb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:47:49.373273Z","signature_b64":"UgfTYqP1nLYBH19d7P5XmNaGJ9Pi5odGBkn791f9Ysid8ymoXqX7i964MnbA3uucXbQ9Fw9eQnBvFp2u0QwEAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"18b00e09dfa5235a9c5339aedb28cd08ed2bcd05cee824229992f5671ddc09eb","last_reissued_at":"2026-05-18T00:47:49.372680Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:47:49.372680Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1611.05052","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:47:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b+YyNVIZOdmJSRkgZrhHWYcBYVZxPMW8UVhjZH5gz1cOce+4qRQ2Jd9Ux12jb0cBru6M3N7xzonDKYvgDd6XCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T05:27:06.910051Z"},"content_sha256":"17f153859cf3574f6e4d128f27deaac86a6b3b281d6321366c2ef376d59c1d0c","schema_version":"1.0","event_id":"sha256:17f153859cf3574f6e4d128f27deaac86a6b3b281d6321366c2ef376d59c1d0c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:DCYA4CO7UURVVHCTHGXNWKGNBD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Farthest Neighbor: The Distant Milky Way Satellite Eridanus II","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"A. A. Plazas, A. Benoit-L\\'evy, A. B. Pace, A. Carnero Rosell, A. Drlica-Wagner, A. K. Romer, A. R. Walker, B. Flaugher, B. Santiago, B. Yanny, C. B. D'Andrea, C. E. Cunha, D. A. Goldstein, D. Brooks, D. Gruen, D. J. James, D. L. Burke, D. L. DePoy, D. L. Tucker, D. Thomas, E. Balbinot, E. Bertin, E. Krause, E. Sanchez, E. Suchyta, F. Menanteau, F. Sobreira, G. Gutierrez, G. M. Bernstein, G. Tarle, H. Lin, H. T. Diehl, I. Sevilla-Noarbe, J. Carretero, J. D. Simon, J. Frieman, J. Garc\\'ia-Bellido, J. Gschwend, J. L. Marshall, K. Bechtol, K. Kuehn, L. N. da Costa, L. Strigari, M. A. G. Maia, M. Carrasco Kind, M. March, M. Schubnell, M. Y. Wang, R. A. Gruendl, R. C. Smith, R. H. Wechsler, R. Miquel, S. Allam, S. Desai, T. F. Eifler, T. M. C. Abbott, T. S. Li, W. Wester, Y. Zhang","submitted_at":"2016-11-15T21:03:55Z","abstract_excerpt":"We present Magellan/IMACS spectroscopy of the recently-discovered Milky Way satellite Eridanus II (Eri II). We identify 28 member stars in Eri II, from which we measure a systemic radial velocity of $v_{\\rm hel} = 75.6 \\pm 1.3~\\mbox{(stat.)} \\pm 2.0~\\mbox{(sys.)}~\\mathrm{km\\,s^{-1}}$ and a velocity dispersion of $6.9^{+1.2}_{-0.9}~\\mathrm{km\\,s^{-1}}$. Assuming that Eri~II is a dispersion-supported system in dynamical equilibrium, we derive a mass within the half-light radius of Eri II is $1.2^{+0.4}_{-0.3} \\times 10^{7}~\\mathrm{M_\\odot}$, indicating a mass-to-light ratio of $420^{+210}_{-140}"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.05052","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:47:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HN0aYKiuTiJUQOLbjQDHbM2VVMVghYzt7BQdcSP0UE13IyCsP7Pon+U24iBTXsksGHdJ7ebLPO9LZmZtjm41BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T05:27:06.910438Z"},"content_sha256":"44299bc74e3c843709e7dc75d7d7226fb263d16770c866cd989f596f624246c4","schema_version":"1.0","event_id":"sha256:44299bc74e3c843709e7dc75d7d7226fb263d16770c866cd989f596f624246c4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DCYA4CO7UURVVHCTHGXNWKGNBD/bundle.json","state_url":"https://pith.science/pith/DCYA4CO7UURVVHCTHGXNWKGNBD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DCYA4CO7UURVVHCTHGXNWKGNBD/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-01T05:27:06Z","links":{"resolver":"https://pith.science/pith/DCYA4CO7UURVVHCTHGXNWKGNBD","bundle":"https://pith.science/pith/DCYA4CO7UURVVHCTHGXNWKGNBD/bundle.json","state":"https://pith.science/pith/DCYA4CO7UURVVHCTHGXNWKGNBD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DCYA4CO7UURVVHCTHGXNWKGNBD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:DCYA4CO7UURVVHCTHGXNWKGNBD","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"582f306d6c1773da10a7f3e30941d7b1cd02ffd9fe8b095222e19f20d64d0276","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-15T21:03:55Z","title_canon_sha256":"f55a8cd44a9fffe179745f3297bfde8654bd383d1b1489b8c5c2ccdd5ce3702b"},"schema_version":"1.0","source":{"id":"1611.05052","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.05052","created_at":"2026-05-18T00:47:49Z"},{"alias_kind":"arxiv_version","alias_value":"1611.05052v2","created_at":"2026-05-18T00:47:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.05052","created_at":"2026-05-18T00:47:49Z"},{"alias_kind":"pith_short_12","alias_value":"DCYA4CO7UURV","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"DCYA4CO7UURVVHCT","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"DCYA4CO7","created_at":"2026-05-18T12:30:12Z"}],"graph_snapshots":[{"event_id":"sha256:44299bc74e3c843709e7dc75d7d7226fb263d16770c866cd989f596f624246c4","target":"graph","created_at":"2026-05-18T00:47:49Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We present Magellan/IMACS spectroscopy of the recently-discovered Milky Way satellite Eridanus II (Eri II). We identify 28 member stars in Eri II, from which we measure a systemic radial velocity of $v_{\\rm hel} = 75.6 \\pm 1.3~\\mbox{(stat.)} \\pm 2.0~\\mbox{(sys.)}~\\mathrm{km\\,s^{-1}}$ and a velocity dispersion of $6.9^{+1.2}_{-0.9}~\\mathrm{km\\,s^{-1}}$. Assuming that Eri~II is a dispersion-supported system in dynamical equilibrium, we derive a mass within the half-light radius of Eri II is $1.2^{+0.4}_{-0.3} \\times 10^{7}~\\mathrm{M_\\odot}$, indicating a mass-to-light ratio of $420^{+210}_{-140}","authors_text":"A. A. Plazas, A. Benoit-L\\'evy, A. B. Pace, A. Carnero Rosell, A. Drlica-Wagner, A. K. Romer, A. R. Walker, B. Flaugher, B. Santiago, B. Yanny, C. B. D'Andrea, C. E. Cunha, D. A. Goldstein, D. Brooks, D. Gruen, D. J. James, D. L. Burke, D. L. DePoy, D. L. Tucker, D. Thomas, E. Balbinot, E. Bertin, E. Krause, E. Sanchez, E. Suchyta, F. Menanteau, F. Sobreira, G. Gutierrez, G. M. Bernstein, G. Tarle, H. Lin, H. T. Diehl, I. Sevilla-Noarbe, J. Carretero, J. D. Simon, J. Frieman, J. Garc\\'ia-Bellido, J. Gschwend, J. L. Marshall, K. Bechtol, K. Kuehn, L. N. da Costa, L. Strigari, M. A. G. Maia, M. Carrasco Kind, M. March, M. Schubnell, M. Y. Wang, R. A. Gruendl, R. C. Smith, R. H. Wechsler, R. Miquel, S. Allam, S. Desai, T. F. Eifler, T. M. C. Abbott, T. S. Li, W. Wester, Y. Zhang","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-15T21:03:55Z","title":"Farthest Neighbor: The Distant Milky Way Satellite Eridanus II"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.05052","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:17f153859cf3574f6e4d128f27deaac86a6b3b281d6321366c2ef376d59c1d0c","target":"record","created_at":"2026-05-18T00:47:49Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"582f306d6c1773da10a7f3e30941d7b1cd02ffd9fe8b095222e19f20d64d0276","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-15T21:03:55Z","title_canon_sha256":"f55a8cd44a9fffe179745f3297bfde8654bd383d1b1489b8c5c2ccdd5ce3702b"},"schema_version":"1.0","source":{"id":"1611.05052","kind":"arxiv","version":2}},"canonical_sha256":"18b00e09dfa5235a9c5339aedb28cd08ed2bcd05cee824229992f5671ddc09eb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"18b00e09dfa5235a9c5339aedb28cd08ed2bcd05cee824229992f5671ddc09eb","first_computed_at":"2026-05-18T00:47:49.372680Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:47:49.372680Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UgfTYqP1nLYBH19d7P5XmNaGJ9Pi5odGBkn791f9Ysid8ymoXqX7i964MnbA3uucXbQ9Fw9eQnBvFp2u0QwEAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:47:49.373273Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.05052","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:17f153859cf3574f6e4d128f27deaac86a6b3b281d6321366c2ef376d59c1d0c","sha256:44299bc74e3c843709e7dc75d7d7226fb263d16770c866cd989f596f624246c4"],"state_sha256":"0c0e737b2aa649b3c833ddf64fbe00a7588329e02fd65cb664ce1f7621cd73af"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4wtQELPWbHTfuPM96HV/KNxWZiGy5OQH4zUtxHPrWZ9MV1nsjcnlONsf7L76y6dvEK4ShQN5WFxOpIXryUubDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T05:27:06.912622Z","bundle_sha256":"855e86040041f71dd02241dc4159d084b6a229be10e0d189700283086bf89070"}}