FIRST RESULTS from the MADCASH SURVEY: A FAINT DWARF GALAXY COMPANION to the LOW-MASS SPIRAL GALAXY NGC 2403 at 3.2 MPC

Carlin, Jeffrey L.; Sand, David J.; Price, Paul; Willman, Beth; Karunakaran, Ananthan; Spekkens, Kristine; Bell, Eric F.; Brodie, Jean; Crnojević, Denija; Forbes, Duncan; Hargis, Jonathan; Kirby, Evan; Lupton, Robert; Peter, Annika H G; Romanowsky, Aaron J.; Strader, Jay

doi:10.25916/sut.26227121.v1

FIRST RESULTS from the MADCASH SURVEY: A FAINT DWARF GALAXY COMPANION to the LOW-MASS SPIRAL GALAXY NGC 2403 at 3.2 MPC

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posted on 2024-08-06, 10:26 authored by Jeffrey L. Carlin, David J. Sand, Paul Price, Beth Willman, Ananthan Karunakaran, Kristine Spekkens, Eric F. Bell, Jean BrodieJean Brodie, Denija Crnojević, Duncan ForbesDuncan Forbes, Jonathan Hargis, Evan Kirby, Robert Lupton, Annika H G Peter, Aaron J. Romanowsky, Jay Strader

We report the discovery of the faintest known dwarf galaxy satellite of a Large Magellanic Cloud (LMC) stellar-mass host beyond the Local Group (LG), based on deep imaging with Subaru/Hyper Suprime-Cam. Magellanic Analog Dwarf Companions And Stellar Halos (MADCASH) J074238+652501-dw lies ̃35 kpc in projection from NGC 2403, a dwarf spiral galaxy at D ≈ 3.2 Mpc. This new dwarf has Mg=-7.4+/- 0.4 and a half-light radius of 168 ± 70 pc, at the calculated distance of 3.39 ± 0.41 Mpc. [Abstract truncated]

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Aspen Center For Physics

National Aeronautics and Space Administration

Research Corporation for Science Advancement

Directorate for Mathematical & Physical Sciences

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https://doi.org/10.3847/2041-8205/828/1/L5

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2041-8213

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Astrophysical Journal Letters

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828

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1

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article no. L5

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1 p

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Institute of Physics Publishing Ltd.

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Copyright © 2016. The American Astronomical Society. All rights reserved. The published version is reproduced here in accordance with the copyright policy of the publisher and can be also be located at https://doi.org/10.3847/2041-8205/828/1/L5.

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FIRST RESULTS from the MADCASH SURVEY: A FAINT DWARF GALAXY COMPANION to the LOW-MASS SPIRAL GALAXY NGC 2403 at 3.2 MPC

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Aspen Center For Physics

National Aeronautics and Space Administration

Research Corporation for Science Advancement

Directorate for Mathematical & Physical Sciences

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