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Possible parent bodies are C-type asteroids, comets, and interplanetary dust particles (IDPs). The dust infall rate was estimated, using different methods, to be between $0.71$ and $2.96 \\times 10^6$ kg/yr (Nesvorny et al., 2011, Borin et al., 2017, Crismani et al., 2017); assuming a carbon content of 10% (Flynn, 1996), this implies an IDP carbon flux of $0.07 - 0.3 \\times 10^6$ kg/yr. We calculate for the first time"},"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":"1803.03270","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-03-08T19:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"e520589ea2fffbbd22b07a12303b3bf869f5abfd4bd6a11837c52c2f0b15039f","abstract_canon_sha256":"1e0629453d304e2c8940befdce2085ac4f429bbb7ca17cb8cfbde9d93f49b04d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:20:01.592684Z","signature_b64":"5J3niV1gwxi7GvZY/VlXKXIxz8pa1itRP1zaLEI8/Fhkqh2yqftErvLd9mtNP4WN9j/FSNvph7jG0fm5U66MAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"43d89f6fdf6e14db437ad3dea750f8229e949260752cc1a9ddb31ce5044b3153","last_reissued_at":"2026-05-18T00:20:01.591713Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:20:01.591713Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Delivery of organics to Mars through asteroid and comet impacts","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Floris F.S. van der Tak, Inge Loes ten Kate, Kateryna Frantseva, Michael Mueller, Sarah Greenstreet","submitted_at":"2018-03-08T19:00:03Z","abstract_excerpt":"Given rapid photodissociation and photodegradation, the recently discovered organics in the Martian subsurface and atmosphere were probably delivered in geologically recent times. Possible parent bodies are C-type asteroids, comets, and interplanetary dust particles (IDPs). The dust infall rate was estimated, using different methods, to be between $0.71$ and $2.96 \\times 10^6$ kg/yr (Nesvorny et al., 2011, Borin et al., 2017, Crismani et al., 2017); assuming a carbon content of 10% (Flynn, 1996), this implies an IDP carbon flux of $0.07 - 0.3 \\times 10^6$ kg/yr. 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