Change Log

3.3.0 (not released yet)

3.2.1 (2026-03-20)

  • Add vdisp-nominal and vdisp-bounds optional inputs [PR #231].

  • Remove python<3.13 constraint [PR #242].

3.2.0 (2025-06-19)

  • Add option to pass the reference to a custom linelist in mpi-fastspecfit [PR #225].

  • Bug due to clip level in ivar2var function caused poor line fits in very small number of strong emission lines. Issue described in [PR #227] and bug fixed in [PR #228].

  • Make sure upper bound is above the amplitude estimate [PR #229].

3.1.5 (2025-03-27)

  • Significant bug fix in how the flux and EW inverse variance estimates [PR #213]. Also adds option of merging main/dark and main/bright catalogs by healpix.

3.1.4 (2025-02-24)

  • Handle no ZWARN_NEW in Iron and older specprods; split large merge files into separate HDUs [PR #211].

3.1.3 (2025-02-01)

  • Eliminate the use of subcommunicators in mpi-fastspecfit [PR #210].

3.1.2 (2025-01-08)

  • A handful more bug fixes [PR #207].

  • Miscellaneous bug fixes revealed in Loa/Y3 processing [PR #206].

3.1.1 (2025-01-05)

  • Miscellaneous bug fixes [PR #205].

  • Pure-MPI implementation; new Podman container; bug fixes [PR #203].

  • Updated algorithm for updating QSO redshifts [PR #201].

  • Progress toward pure-MPI production code [PR #200].

  • Fix <1% bias in fluxes and EWs of tied and free doublet ratios [PR #198].

  • Backwards incompatible update to the data model; expanded unit tests [PR #197].

3.1.0 (2024-11-21)

  • Update theoretical [NII] 6548,84 and [OIII] 4959,5007 doublet ratios [PR #195].

  • Additional cleanups and speedups to the new Monte Carlo code [PR #194].

  • Implement a simplified idiom for Monte Carlo iteration [PR #193].

  • Merge two multiprocessing loops into one [PR #192].

  • Monte Carlo to estimate model parameters [PR #189].

  • Fix issues with log level retention [PR #187].

3.0.0 (2024-10-30)

  • Rewrite of the smooth continuum and continuum-flux algorithms [PR #186].

  • Miscellaneous bug fixes [PR #185].

  • Use Numba-based Resolution implementation with faster multiply. Also tweak parameters of continuum least_squares optimizer for speed. [PR #181]

  • Cache Fourier transforms of the templates for speed [PR #180].

  • Update line-list (drop broad HeI lines) and rest wavelengths [PR #179].

  • Near-total rewrite of both the continuum and emission-line fitting engines and major updates to the organizational infrastructure of the code, all with the goal of maximizing speed and accuracy [PR #177].

2.5.2 (2024-04-28)

  • Add support for processing a custom sample with full MPI [PR #168].

  • New optional inputs to mpi-fastspecfit: --no-smooth-continuum, --fphotodir, and --fphotofile.

  • Documentation bug in LOGLNU definitions (reported by R. Hada).

  • Add --zmin optional argument to fastspecfit.

  • Other miscellaneous changes committed directly to main.

2.5.1 (2024-01-18)

  • Bug fix: handle Lya falling in a masked camera (only for objects at z>5ish).

2.5.0 (2024-01-13)

  • Address stellar mass bias; more constrained broad+narrow fitting; and max velocity dispersion increased to 475 km/s (bump template version to 1.3.0) [PR #166].

2.4.3 (2023-12-03)

  • Expand velocity dispersion grid to 425 km/s and bump the template version to 1.2.0 [PR #158].

  • Handle variable pixel size in camera-overlap region bug [PR #157].

  • Fix minor bug that broke the stackfit functionality [PR #155].

2.4.2 (2023-08-30)

  • Fix incorrect syntax synthesizing photometry for highest-redshift targets bug [PR #152].

2.4.1 (2023-08-23)

  • Just two rounds of emission-line fitting [PR #151].

2.4.0 (2023-08-19)

  • Bug fixes and miscellaneous feature requests for next VACs, including modified SPS templates and a user-friendly refactor of the K-correction code [PR #148].

2.3.0 (2023-08-07)

  • Support non-DR9 photometry via a new photometric configuration file [PR #133].

  • Miscellaneous updates and bug fixes ahead of next version of VACs [PR #145].

2.2.0 (2023-08-02)

  • Allow the Redrock redshift to be overridden [PR #115].

  • Code to support fitting stacked spectra [PR #116].

  • Bug fix of reversed tied flux ratio of [OII]7320,7330 doublet [PR #120].

  • Do not constrain the SPS age by default [PR #132].

  • Bug fix of emission-line subtracted Dn(4000) measurement [PR #135].

  • Update IGM attenuation coefficients [PR #136].

  • Several significant changes [PR #137]:

    • Record the observed-space emission-line amplitude in _AMP and move the model-space amplitude to _MODELAMP.

    • Demand at least 12 pixels to measure the scatter in the pixels under the line (therefore _AMP_IVAR should be more reliable for narrow lines).

    • Major bug fix whereby the model emission-line spectra were not being convolved with the resolution matrix.

    • Redefine _CHI2 for an emission line as the observed not reduced chi2.

    • Switch from (deprecated) pkg_resources to importlib.

    • Updated documentation (data model) and several non-negligible speed-ups.

  • Improved modeling of galaxies with broad+narrow line-emission [PR #142]:

2.1.2 (2023-04-01)

  • Web-app updates needed for Fuji/v2.0 database load [PR #107].

  • Get target cutouts using image coadds on-disk [PR #108].

  • Initial hooks to fit stacked spectra [PR #113].

  • Updated documentation for v2.0 Fujilupe and v1.0 Iron VACs [PR #114].

2.1.1 (2023-02-22)

  • Be robust to synthesizing photometry of the highest-redshift targets [PR #101].

  • Fix another corner-case crash to the highest-redshift targets [PR #102].

  • Do not crash if there are no lines to optimize [PR #104].

2.1.0 (2023-02-17)

  • Tests, bug fixes, and speed-ups of version 2.0.0 [PR #99].

2.0.0 (2023-01-23)

  • Support custom coadds, update laboratory line-wavelengths, and fix major EW bug [PR #87].

  • Refactor fitting engine to not use fnnls or astropy.modeling [PR #92].

  • Additional Fujilupe documentation [PR #93].

  • Webapp updates to support latest data model [PR #94].

  • Joint spectrophotometric fitting and much more [PR #95].

  • Additional fujilupe v2.0 updates [PR #96].

1.0.1 (2022-08-11)

  • Additional cleanup needed to finish Fujilupe processing [PR #78].

  • Initial Fuji and Guadalupe VAC documentation [PR #77].

1.0.0 (2022-08-01)

  • Update Docker container and tag all dependencies [PR #76].

  • Numerous backwards-incompatible improvements and changes to the code engine and data model in preparation for processing Fuji (EDR)+Guadalupe [PR #69].

  • Initial set-up of GitHub Actions and unit tests [PR #61].

  • Initial version of the web-application [PR #60].

  • First round of development work in preparation for Fuji [PR #55].

0.3 (2022-01-19)

  • Additional updates needed to complete Everest release [PR #44].

0.2 (2021-09-04)

  • Major update to support Everest data release [PR #40].

0.1 (2021-07-29

  • Fix spectroscopic Dn(4000) calculation bug [PR #35].

  • Add UBV rest-frame photometry [PR #34].

  • Additional template work [PR #24].

  • Initial code to build spectrophotometric templates [PR #20].

  • Additional updates needed to finish fitting all of Denali [PR #18].

  • First set of updates for Denali data release [PR #16].

0.0.2 (2021-04-10)

  • More flexible line-fitting and data model updates to handle the Cascades data release [PR #15].