Credits & licences
MGCLS–H I stands on the work of many people and projects. If the database helps your research, please acknowledge it and cite the data, pipelines and services below that your work relies on.
Data
- MeerKAT. The MeerKAT telescope is operated by the South African Radio Astronomy Observatory, which is a facility of the National Research Foundation, an agency of the Department of Science and Innovation. Jonas & the MeerKAT Team (2016), Proceedings of MeerKAT Science: On the Pathway to the SKA, 1.
- MeerKAT Galaxy Cluster Legacy Survey (MGCLS): Knowles et al. (2022), A&A, 657, A56. mgcls.sarao.ac.za
Processing pipelines
- CARACal (calibration and imaging): Józsa et al. (2020), ASP Conf. Ser., 527, 635.
- SoFiA-2 (source finding, catalogues, moment maps, cubelets and spectra): Westmeier et al. (2021), MNRAS, 506, 3962. Licence: GPL-3.0.
- TEMBA, the Three-dimensional Emission Models for Blind-survey Assessments pipeline (injection–recovery completeness campaigns): artificial galaxies are modelled with 3D-Barolo (Di Teodoro & Fraternali 2015, MNRAS, 451, 3021), injected into the MGCLS–H I cubes and recovered with SoFiA-2. The interactive completeness plots on the cluster pages are made from its output.
- The H I contours on the sky (1σ and 3σ moment-0 signal-to-noise, the NH I = 2nN0 moment-0 levels following the SoFiA Image Pipeline convention, and the 1 M☉ pc−2 isophote of Wang et al. 2016, MNRAS, 460, 2143) are computed from the released SoFiA-2 cubelets.
Sky viewer and background surveys
- Aladin Lite (sky viewer), developed by CDS, Strasbourg Astronomical Observatory, France: Boch & Fernique (2014), ASP Conf. Ser., 485, 277. Licence: GPL-3.0. The site loads the unmodified release (version 3.8.2) from the jsDelivr CDN.
- HiPS (Hierarchical Progressive Surveys): Fernique et al. (2015), A&A, 578, A114. The survey tiles are served by CDS.
- SIMBAD (the viewer's object pointer): Wenger et al. (2000), A&AS, 143, 9. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France.
- DSS2: the Digitized Sky Surveys were produced at the Space Telescope Science Institute under U.S. Government grant NAG W-2166.
- DESI Legacy Imaging Surveys DR10: Dey et al. (2019), AJ, 157, 168; please follow the Legacy Surveys acknowledgement.
- Pan-STARRS1: Chambers et al. (2016), arXiv:1612.05560.
- WISE / AllWISE: Wright et al. (2010), AJ, 140, 1868. This publication makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by NASA.
- 2MASS: Skrutskie et al. (2006), AJ, 131, 1163. This publication makes use of data products from the Two Micron All Sky Survey, a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by NASA and the NSF.
Software in the website
| Software | Used for | Licence |
|---|---|---|
| Aladin Lite 3.8.2 (CDS) | interactive sky viewer | GPL-3.0 |
| Plotly.js 2.35 | interactive plots | MIT |
| React 18 | page components | MIT |
| Bootstrap 5.3 and Bootstrap Icons | layout and icons | MIT |
| samp.js (M. Taylor) | sending tables and positions to TOPCAT and Aladin (SAMP) | CC0 (public domain) |
| Flask | web application | BSD-3-Clause |
| NumPy (Harris et al. 2020, Nature, 585, 357) and pandas | catalogue handling | BSD-3-Clause |
| Astropy (Astropy Collaboration 2013, 2018, 2022) | making the contour files (offline) | BSD-3-Clause |
| contourpy | making the contour files (offline) | BSD-3-Clause |
| Zappa | deployment to AWS Lambda | MIT |
| Vite | building the pages | MIT |
Each package is used unmodified under its own licence; their licence texts are distributed with the packages. The site's data are served from Amazon Web Services (S3 and Lambda) and its scripts from jsDelivr.
Hosting and support
The MGCLS–H I database is a product of Rhodes University (RATT) and the National Research Foundation – South African Radio Astronomy Observatory (NRF–SARAO).