{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/identifying-dwarfs-of-mc-analog-galaxies-id","title":"Identifying Dwarfs of MC Analog GalaxiEs (ID-MAGE): The Search for Satellites Around Low-Mass Hosts","arxiv_id":"2504.00253","date":"2025-03-31","proceeding":null,"authors":["Laura Congreve Hunter","Burçin Mutlu-Pakdil","David J. Sand","Paul Bennet","Donghyeon J. Khim","Denija Crnojević","Amandine Doliva-Dolinsky","Emmanuel Durodola","Catherine Fielder","Rowan Goebel-Bain","Michael G. Jones","Ananthan Karunakaran","Kristine Spekkens","Dennis Zaritsky"],"abstract":"We present results from ID-MAGE (Identifying Dwarfs of MC Analog GalaxiEs), a survey aimed at identifying and characterizing unresolved satellite galaxies around 36~nearby LMC- and SMC-mass hosts (D$=$4$-$10~Mpc). We use archival DESI Legacy Survey imaging data and perform an extensive search for dwarf satellites, extending out to a radius of 150~kpc ($\\sim$$R_{vir}$). We identify 355 candidate satellite galaxies, including 264 new discoveries. Extensive tests with injected galaxies demonstrate that the survey is complete down to $M_V\\sim-$9.0 (assuming the distance of the host) and $\\mu_{0,V}\\sim$26 mag arcsec$^{-2}$ (assuming a n$=$1 S\\'ersic profile). We perform consistent photometry, via S\\'ersic profile fitting, on all candidates and have initiated a comprehensive follow-up campaign to confirm and characterize candidates. Through a systematic visual inspection campaign, we classify the top candidates as high-likelihood satellites. On average, we find 4.0$\\pm$1.4 high-likelihood candidate satellites per LMC-mass host and 2.1$\\pm$0.6 per SMC-mass host which is within the range predicted by cosmological models. We use this sample to establish upper and lower estimates on the satellite luminosity function of LMC/SMC-mass galaxies. ID-MAGE nearly triples the number of low-mass galaxies surveyed for satellites with well-characterized completeness limits, providing a unique dataset to explore small-scale structure and dwarf galaxy evolution around low-mass hosts in diverse environments.","url_abs":"https://arxiv.org/abs/2504.00253v4","url_pdf":"https://arxiv.org/pdf/2504.00253v4.pdf","source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","row_kind":"links_only","authors_date_abstract":"arXiv metadata, CC0 1.0 (https://info.arxiv.org/help/license), from the Kaggle arXiv metadata snapshot of 2026-09-12"},"code_links":[{"paper_slug":"identifying-dwarfs-of-mc-analog-galaxies-id","repo_url":"https://github.com/hunte22l/ID-MAGE_Completeness","is_official":1,"mentioned_in_paper":0,"mentioned_in_github":0,"framework":"none","reach":null}],"tasks":[],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"syntology_url":null,"atlas_url":null,"mcp":null,"developers":"https://syntology.ai/developers"},"arxiv_metadata":null,"syntology_extracted_results":null}