2006A&A...460L..19M

Query : 2006A&A...460L..19M

2006A&A...460L..19M - Astronomy and Astrophysics, volume 460L19-22 (2006/12-3)

Five new very low mass binaries.

MONTAGNIER G., SEGRANSAN D., BEUZIT J.-L., FORVEILLE T., DELORME P., DELFOSSE X., PERRIER C., UDRY S., MAYOR M., CHAUVIN G., LAGRANGE A.-M., MOUILLET D., FUSCO T., GIGAN P. and STADLER E.

Abstract (from CDS):

We report the discovery of companions to 5 nearby late M dwarfs (>M5), LHS1901, LHS4009, LHS6167, LP869-26 and WT460, and we confirm that the recently discovered mid-T brown dwarf companion to SCR1845-6357 is physically bound to that star. These discoveries result from our adaptive optics survey of all M dwarfs within 12pc. The new companions have spectral types M5 to L1, and orbital separations between 1 and 10AU. They add significantly to the number of late M dwarfs binaries in the immediate solar neighbourhood, and will improve the multiplicity statistics of late M dwarfs. The expected periods range from 3 to 130 years. Several pairs thus have good potential for accurate mass determination in this poorly sampled mass range.

Abstract Copyright: ∼

Journal keyword(s): binaries: visual - stars: low-mass, brown dwarfs - techniques: high angular resolution - instrumentation: adaptive optics

Simbad objects: 14

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Number of rows : 14
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 85A PM* 00 05 44.4464281896 +17 50 25.057797612   8.79 8.35     F5V 35 0
2 G 272-10 PM* 01 23 18.0289880193 -12 56 22.856085841   13.78 13.009 12.733 10.05 dM6.5 23 0
3 LP 205-49 PM* 06 45 20.1692200128 +39 00 05.776755588   19.6   17.8   ~ 5 0
4 LP 206-11 ** 07 11 11.518536 +43 29 56.66532   16.7 15.90 15.746 11.92 M5.5V 44 0
5 LP 423-31 PM* 07 52 23.9250338268 +16 12 14.957934141   17.7 16.73 15.8   M6.0V 60 0
6 L 675-81 Pe* 08 40 59.2057867166 -23 27 22.592748045   13.2 11.975 11.637 9.37 M3.5V 180 1
7 G 161-7 ** 09 15 36.402000 -10 35 47.22900   15.643 13.804 13.473 10.42 M5.0V 54 0
8 WT 460 ** 14 11 59.8993078070 -41 32 21.916525001       15.355   M5.5e 28 0
9 CD-48 11837 PM* 17 35 13.6172141343 -48 40 51.121402968 12.875 11.673 10.127 9.101 7.871 M1.5V 90 0
10 SCR J1845-6357 LM* 18 45 05.2532493080 -63 57 47.450109578     17.40 14.99 12.46 M8.5V 77 1
11 SCR J1845-6357B BD* 18 45 05.2560 -63 57 47.808           T6 35 0
12 LP 869-19 SB* 19 42 00.6517668552 -21 04 05.368870956   14.84 13.27 12.806 10.29 M3.5 35 0
13 LP 869-26 ** 19 44 53.8131781299 -23 38 00.150887000     14.120 13.727   M4.5 23 0
14 G 273-130 ** 23 45 31.279776 -16 10 19.40016   15.7   14.161   M5V 42 0

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