Identifying Dwarfs of MC Analog GalaxiEs (ID-MAGE): The Search for Satellites around Low-mass Hosts
We present results from Identifying Dwarfs of MC Analog GalaxiEs (ID-MAGE), a survey aimed at identifying and characterizing unresolved satellite galaxies around 35 nearby LMC- and SMC-mass hosts ( D = 4−10 Mpc). We use archival DESI Legacy Survey imaging data and perform an extensive search for dw...
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2025-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/ade9a4 |
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| author | Laura Congreve Hunter Burçİn Mutlu-Pakdİl 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 |
| author_facet | Laura Congreve Hunter Burçİn Mutlu-Pakdİl 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 |
| author_sort | Laura Congreve Hunter |
| collection | DOAJ |
| description | We present results from Identifying Dwarfs of MC Analog GalaxiEs (ID-MAGE), a survey aimed at identifying and characterizing unresolved satellite galaxies around 35 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 (∼ 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 ∼ −9.0 (assuming the distance of the host) and μ _0, _V ∼ 26 mag arcsec ^−2 (assuming an n = 1 Sérsic profile). We perform consistent photometry, via Sérsic 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 ± 1.4 high-likelihood candidate satellites per LMC-mass host and 2.1 ± 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 data set to explore small-scale structure and dwarf galaxy evolution around low-mass hosts in diverse environments. |
| format | Article |
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| institution | Kabale University |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj-art-30472fc762fc41ec9a9155080fa12c8c2025-08-20T03:38:59ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-0198915810.3847/1538-4357/ade9a4Identifying Dwarfs of MC Analog GalaxiEs (ID-MAGE): The Search for Satellites around Low-mass HostsLaura Congreve Hunter0https://orcid.org/0000-0001-5368-3632Burçİn Mutlu-Pakdİl1https://orcid.org/0000-0001-9649-4815David J. Sand2https://orcid.org/0000-0003-4102-380XPaul Bennet3https://orcid.org/0000-0001-8354-7279Donghyeon J. Khim4https://orcid.org/0000-0002-7013-4392Denija Crnojević5https://orcid.org/0000-0002-1763-4128Amandine Doliva-Dolinsky6https://orcid.org/0000-0001-9775-9029Emmanuel Durodola7https://orcid.org/0009-0004-9516-9593Catherine Fielder8https://orcid.org/0000-0001-8245-779XRowan Goebel-Bain9Michael G. Jones10https://orcid.org/0000-0002-5434-4904Ananthan Karunakaran11https://orcid.org/0000-0001-8855-3635Kristine Spekkens12https://orcid.org/0000-0002-0956-7949Dennis Zaritsky13https://orcid.org/0000-0002-5177-727XDepartment of Physics and Astronomy, Dartmouth College , 6127 Wilder Laboratory, Hanover, NH 03755, USA ; laura.c.hunter@dartmouth.eduDepartment of Physics and Astronomy, Dartmouth College , 6127 Wilder Laboratory, Hanover, NH 03755, USA ; laura.c.hunter@dartmouth.eduSteward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ 85721-0065, USASpace Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USASteward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ 85721-0065, USADepartment of Physics & Astronomy, University of Tampa , 401 West Kennedy Boulevard, Tampa, FL 33606, USADepartment of Physics and Astronomy, Dartmouth College , 6127 Wilder Laboratory, Hanover, NH 03755, USA ; laura.c.hunter@dartmouth.edu; Department of Physics & Astronomy, University of Tampa , 401 West Kennedy Boulevard, Tampa, FL 33606, USA; Department of Physics, University of Surrey , Guildford, Surrey GU2 7XH, UKDepartment of Physics and Astronomy, Dartmouth College , 6127 Wilder Laboratory, Hanover, NH 03755, USA ; laura.c.hunter@dartmouth.eduSteward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ 85721-0065, USADepartment of Physics and Astronomy, Dartmouth College , 6127 Wilder Laboratory, Hanover, NH 03755, USA ; laura.c.hunter@dartmouth.eduSteward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ 85721-0065, USADepartment of Astronomy & Astrophysics, University of Toronto , Toronto, ON M5S 3H4, CanadaDepartment of Physics, Engineering Physics and Astronomy, Queen’s University , Kingston, ON K7L 3N6, CanadaSteward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ 85721-0065, USAWe present results from Identifying Dwarfs of MC Analog GalaxiEs (ID-MAGE), a survey aimed at identifying and characterizing unresolved satellite galaxies around 35 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 (∼ 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 ∼ −9.0 (assuming the distance of the host) and μ _0, _V ∼ 26 mag arcsec ^−2 (assuming an n = 1 Sérsic profile). We perform consistent photometry, via Sérsic 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 ± 1.4 high-likelihood candidate satellites per LMC-mass host and 2.1 ± 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 data set to explore small-scale structure and dwarf galaxy evolution around low-mass hosts in diverse environments.https://doi.org/10.3847/1538-4357/ade9a4Low surface brightness galaxiesDwarf galaxiesGalaxy evolution |
| spellingShingle | Laura Congreve Hunter Burçİn Mutlu-Pakdİl 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 Identifying Dwarfs of MC Analog GalaxiEs (ID-MAGE): The Search for Satellites around Low-mass Hosts The Astrophysical Journal Low surface brightness galaxies Dwarf galaxies Galaxy evolution |
| title | Identifying Dwarfs of MC Analog GalaxiEs (ID-MAGE): The Search for Satellites around Low-mass Hosts |
| title_full | Identifying Dwarfs of MC Analog GalaxiEs (ID-MAGE): The Search for Satellites around Low-mass Hosts |
| title_fullStr | Identifying Dwarfs of MC Analog GalaxiEs (ID-MAGE): The Search for Satellites around Low-mass Hosts |
| title_full_unstemmed | Identifying Dwarfs of MC Analog GalaxiEs (ID-MAGE): The Search for Satellites around Low-mass Hosts |
| title_short | Identifying Dwarfs of MC Analog GalaxiEs (ID-MAGE): The Search for Satellites around Low-mass Hosts |
| title_sort | identifying dwarfs of mc analog galaxies id mage the search for satellites around low mass hosts |
| topic | Low surface brightness galaxies Dwarf galaxies Galaxy evolution |
| url | https://doi.org/10.3847/1538-4357/ade9a4 |
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