{"artifact_id":"L1-377","layer":"L1","title":"Galaxy SED Fitting","domain":"Astrophysics","sub_domain":"Galaxy properties","physics_fingerprint":{"L_DAG":3.0,"title":"Galaxy SED Fitting","domain":"Astrophysics","carrier":"photon","primitives":["G.structured","S.dust.attenuation_calzetti","O.chi2.photometric"],"sub_domain":"Galaxy properties","noise_model":"observation_gaussian","problem_class":"parameter_estimation","solution_space":"galaxy_parameter_vector","difficulty_delta":3,"integration_axis":"spectral_energy_distribution","sensing_mechanism":"broadband_photometric_sed"},"observable_profile":{"metric":"SFR_log_RMSE","regime":"Existence of the recovered galaxy_parameter_vector is guaranteed within the declared Omega bounds. Uniqueness holds on the measurement-supported subspace; out-of-support modes are controlled by declared priors. Stability is conditionally stable (kappa_eff ~= 80); AGN_contamination dominates the stability cliff; the remaining mismatch parameters contribute higher-order bias terms. Observation gaussian sets the irreducible data-fidelity floor.","secondary":"stellar_mass_log_RMSE"},"size_tiers":{"center_spec":{"omega":{"A_V_mag":0.5,"N_filters":10,"redshift_z":0.5,"SNR_per_band":10},"input_format":"measurement_only","problem_class":"parameter_estimation","forward_operator":"broadband_photometric_sed","epsilon_fn_center":"0.25 SFR_log_RMSE"},"omega_bounds":{"A_V_mag":[0.0,3.0],"N_filters":[3,30],"redshift_z":[0.0,6.0],"SNR_per_band":[3,100]},"epsilon_bounds":{"SFR_log_RMSE":[0.05,0.8]},"allowed_problem_classes":["parameter_estimation"],"allowed_omega_dimensions":["N_filters","redshift_z","SNR_per_band","A_V_mag"],"allowed_forward_operators":["broadband_photometric_sed"]},"hardness_fn":{"type":"epsilon_fn","delta":3,"kappa":2000,"metric":"SFR_log_RMSE"},"initiator_dataset":[{"name":"primary","weight":1.0,"ipfs_cid":null,"license_hash":null}],"status":"testnet","staked_pwm":0.0,"chain_hash":"0xf8e3e00e1cc0411d28bd55c61d6adb81a9a8ea4f0115d558874f4c077531f6bb","chain_tx_hash":"0x824b97c247312d5ca6d0c13ccc8c2b6db28f86ef8b339727234aea29c549a239","chain_block":41555178}