New visual companions of solar-type stars within 25 pc

We report the discovery of faint common-proper-motion companions to the nearby southern solar-type stars HD43162, HD67199, HD114837, HD114853, HD129502, HD165185, HD197214, and HD212330 from near-infrared imaging and astrometry. We also confirm the previously identified tertiary components around HD165401 and HD188088. Since the majority of these stars were already known as binaries, they ascend now to higher-level systems. A particularly interesting case is the G6.5V BY Dratype variable HD43162, which harbors two common-proper-motion companions at distances of 410AU and 2740AU. Our limited study shows that the inventory of common-proper-motion companions around nearby bright stars is still not completely known.

[1]  B. Reipurth,et al.  Formation of the widest binary stars from dynamical unfolding of triple systems , 2012, Nature.

[2]  R. Chini,et al.  MULTIPLICITY AMONG F-TYPE STARS , 2012 .

[3]  A. Tokovinin,et al.  WIDE COMPANIONS TO HIPPARCOS STARS WITHIN 67 pc OF THE SUN , 2012, 1208.0626.

[4]  A. Tokovinin SPECKLE INTERFEROMETRY AND ORBITS OF “FAST” VISUAL BINARIES , 2012, 1206.1882.

[5]  K. Fuhrmann Nearby stars of the Galactic disc and halo - V: Nearby stars - V , 2011 .

[6]  B. Reipurth,et al.  ORPHANED PROTOSTARS , 2010, 1010.3307.

[7]  K. Stassun,et al.  THE HIGH-ORDER MULTIPLICITY OF UNUSUALLY WIDE M DWARF BINARIES: ELEVEN NEW TRIPLE AND QUADRUPLE SYSTEMS , 2010, 1007.3735.

[8]  Markus Hartung,et al.  SUBSYSTEMS IN NEARBY SOLAR-TYPE WIDE BINARIES , 2010, 1006.1253.

[9]  Russel J. White,et al.  A SURVEY OF STELLAR FAMILIES: MULTIPLICITY OF SOLAR-TYPE STARS , 2009, 1007.0414.

[10]  J. Bochanski,et al.  THE BROWN DWARF KINEMATICS PROJECT. II. DETAILS ON NINE WIDE COMMON PROPER MOTION VERY LOW MASS COMPANIONS TO NEARBY STARS, , 2009, 0911.1363.

[11]  John B. Davis,et al.  A list of bright interferometric calibrators measured at the European Southern Observatory Very Large Telescope Interferometer , 2009 .

[12]  A. Burgasser,et al.  LOW-MASS TERTIARY COMPANIONS TO SPECTROSCOPIC BINARIES. I. COMMON PROPER MOTION SURVEY FOR WIDE COMPANIONS USING 2MASS , 2009, 1206.4289.

[13]  K. Fuhrmann Nearby stars of the Galactic disc and halo – IV , 2008 .

[14]  F. V. Leeuwen Validation of the new Hipparcos reduction , 2007, 0708.1752.

[15]  S. Lépine,et al.  New Distant Companions to Known Nearby Stars. II. Faint Companions of Hipparcos Stars and the Frequency of Wide Binary Systems , 2006, astro-ph/0610605.

[16]  M. Skrutskie,et al.  The Two Micron All Sky Survey (2MASS) , 2006 .

[17]  S. Udry,et al.  Tertiary Companions to Close Spectroscopic Binaries , 2006, astro-ph/0601518.

[18]  E. H. Olsen,et al.  The Geneva-Copenhagen survey of the Solar neighbourhood - Ages, metallicities, and kinematic properties of ~14 000 F and G dwarfs , 2004, astro-ph/0405198.

[19]  S. Hodgkin,et al.  On the properties of young multiple stars , 2004, astro-ph/0403094.

[20]  J. Gizis,et al.  Identification of New M Dwarfs in the Solar Neighborhood , 2003, astro-ph/0606617.

[21]  R. Garrison,et al.  Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I. , 2003, astro-ph/0308182.

[22]  A. Gould,et al.  Disk and Halo Wide Binaries from the Revised Luyten Catalog: Probes of Star Formation and MACHO Dark Matter , 2003, astro-ph/0307434.

[23]  C. Beichman,et al.  A Distant Stellar Companion in the υ Andromedae System , 2002, astro-ph/0205277.

[24]  R. P. Butler,et al.  Radial Velocities for 889 Late-Type Stars , 2001, astro-ph/0112477.

[25]  S. Rembold,et al.  Intrinsic Colors of Stars in the Near-Infrared , 2001 .

[26]  B. Reipurth Disintegrating Multiple Systems in Early Stellar Evolution , 2000 .

[27]  F. Fekel,et al.  HR 7578 - A K dwarf double-lined spectroscopic binary with peculiar abundances , 1983 .

[28]  H. Abt,et al.  The Secondaries of Solar-Type Primaries. I. The Radial Velocities , 2006 .

[29]  A. Tokovinin,et al.  Statistics of spectroscopic sub-systems in visual multiple stars , 2002 .