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- W2054209318 abstract "With only six known examples, M dwarf debris disks are rare, even though M dwarfs constitute the majority of stars in the Galaxy. After finding a new M dwarf debris disk in a shallow mid-infrared observation of NGC 2547, we present a considerably deeper Spitzer MIPS image of the region, with a maximum exposure time of 15 minutes pixel−1. Among sources selected from a previously published membership list, we identify nine new M dwarfs with excess emission at 24 μm tracing warm material close to the snow line of these stars, at orbital radii of less than 1 AU. We argue that these are likely debris disks, suggesting that planet formation is under way in these systems. Interestingly, the estimated excess fraction of M stars appears to be higher than that of G and K stars in our sample." @default.
- W2054209318 created "2016-06-24" @default.
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- W2054209318 date "2008-11-10" @default.
- W2054209318 modified "2023-10-16" @default.
- W2054209318 title "New M Dwarf Debris Disk Candidates in NGC 2547" @default.
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- W2054209318 doi "https://doi.org/10.1086/592035" @default.
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