SIMBAD references

2008ApJ...687.1107F - Astrophys. J., 687, 1107-1116 (2008/November-2)

New M dwarf debris disk candidates in NGC 2547.


Abstract (from CDS):

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. 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.

Abstract Copyright:

Journal keyword(s): Stars: Circumstellar Matter - Infrared: Stars - Galaxy: Open Clusters and Associations: Individual: NGC Number: NGC 2547 - Stars: Planetary Systems: Formation

Nomenclature: Table 2: [FLM2008] NN (Nos 1-26).

Simbad objects: 41

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