SIMBAD references

2001A&A...366L..13D - Astronomy and Astrophysics, volume 366, L13-17 (2001/2-2)

New neighbours: II. An M9 dwarf at (d)∼4pc, DENIS-P J104814.7-395606.1.

DELFOSSE X., FORVEILLE T., MARTIN E.L., GUIBERT J., BORSENBERGER J., CRIFO F., ALARD C., EPCHTEIN N., FOUQUE P., SIMON G. and TAJAHMADY F.

Abstract (from CDS):

We present the discovery of a previously unknown member of the immediate solar neighbourhood, DENIS-P J104814.7-395606.1 (hereafter DENIS 1048-39), identified while mining the DENIS database for new nearby stars. A HIRES echelle spectrum obtained with the 10-m Keck telescope shows that it is an M9 dwarf. DENIS 1048-39 has a very bright apparent magnitude (I=12.67) for its spectral type and colour (I-J=3.07), and is therefore very nearby. If it is single its distance is only 4.1±0.6pc, ranking it as between our 12th and 40th closest neighbour. It is also the closest star or brown dwarf with a spectral type later than M7V. Its proper motion was determined through comparison of Sky atlas Schmidt plates, scanned by the MAMA microdensitometer, with the DENIS images. At 1.52"/yr it primarily attests the closeness of DENIS 1048-39 and hence its dwarf status. These characteristics make it an obvious target for further detailed studies.

Abstract Copyright:

Journal keyword(s): astronomical data base: surveys - astrometry and celestial mechanism: astrometry - stars: low mass, brown dwarfs - stars: late-type

Simbad objects: 11

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