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J/A+A/325/159       Companions to M dwarfs within 5pc (Leinert+ 1997)

A search for companions to nearby southern M dwarfs with near-infrared speckle interferometry Leinert C., Henry T., Glindemann A., McCArthy D.W. Jr. <Astron. Astrophys. 325, 159 (1997)> =1997A&A...325..159L (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Stars, M-type ; Photometry Keywords: binaries: general - stars: low-mass - stars: luminosity function, mass function Description: The paper contains four tables which summarise the duplicity status of the 34 M dwarf primaries within 5.0pc. Table 1 gives the basic data for the sample: designation, coordinates, V,J,H,K photometry, parallax Table 2 gives, for the nine southern sources, magnitude limits for possible undetected companions. These limits are given for assumed projected separations of 1AU, 2AU, 5AU, and 10AU. In addition, the circumstances of the observation are given: date, telescope, and observational technique. Table 3 repeats, in updated form, the same information (except for the date) for the 25 northern sources. Table 4 lists the nine M dwarf primaries within 5pc which do have one or more companions. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1 72 40 Basic data for all M dwarfs within five parsecs table2 61 39 Companion magnitude limits for southern M dwarfs within five parsecs table3 44 30 *Updated summary of magnitude limits for northern M dwarfs within five parsecs tables.tex 112 346 LaTeX version of the tables
Note on table3: Membership updates include new parallaxes from Jahreiss (1997, Catalogue of Nerby Stars, A&AS, in press).
Byte-by-byte Description of file: table1
Bytes Format Units Label Explanations
1 A1 --- Loc [SN] S: southern stars (δ≤-30deg) N: northern stars (δ>-30deg) 3- 16 A14 --- Name Object designation 17 A1 --- Note [abc] Note (1) 19- 20 I2 h RAh Right ascension (J2000) 22- 23 I2 min RAm Right ascension (J2000) 25- 28 F4.1 s RAs Right ascension (J2000) 30 A1 --- DE- Declination sign 31- 32 I2 deg DEd Declination (J2000) 34- 35 I2 arcmin DEm Declination (J2000) 37- 38 I2 arcsec DEs Declination (J2000) 40- 44 F5.2 mag Vmag V magnitude (apparent) 46- 49 F4.2 mag Jmag J magnitude (apparent) (1.20µm) 51- 54 F4.2 mag Hmag H magnitude (apparent) (1.62µm) 56- 59 F4.2 mag Kmag K magnitude (apparent) (2.20µm) 62- 67 F6.4 arcsec plx trigonometric parallax 69- 72 F4.2 mag KMag K magnitude (absolute)
Note (1): a: V photometry from Jahreiss (1997, Catalogue of Nerby Stars, A&AS, in press) JHK from this paper all other photometry from Leggett (1992ApJS...82..351L) errors: ≤ 0.03 magnitudes in VJHK b: not a primary c: parallaxes are from the Third Catalogue of Nearby Stars, Jahreiss (1997, A&AS, in press)
Byte-by-byte Description of file: table2
Bytes Format Units Label Explanations
1- 10 A10 --- Name Object designation 12- 17 A6 --- Tech Applied technique (1) 19- 26 A8 "DD/MM/YY" Obsdate Date of observations 28- 36 A9 --- Tel Telscope used 38- 39 A2 --- Band Wavelength band 41- 44 F4.1 mag Mag1AU ? Magnitude limit for separation 1 AU (2) 45 A1 --- u_Mag1AU Uncertainty flag on Mag1AU 47- 50 F4.1 mag Mag2AU Magnitude limit for separation 2 AU (2) 51 A1 --- u_Mag2AU Uncertainty flag on Mag2AU 53- 56 F4.1 mag Mag5AU Magnitude limit for separation 5 AU (2) 58- 61 F4.1 mag Mag10AU Magnitude limit for separation 10 AU (2)
Note (1): 1D NS : one-dimensional slit-scanning speckle observations in north-south direction 1D EW : same in east-west direction 2D SPK: speckle observations with a two-dimensional array detector Note (2): The companion brightness limits are given in absolute magnitudes.
Byte-by-byte Description of file: table3
Bytes Format Units Label Explanations
1- 14 A14 --- Name Object designation 16- 21 A6 --- Tech Applied technique 23 A1 --- Band Wavelength band 25- 28 F4.1 mag Mag1AU ? Magnitude limit for separation 1 AU (1) 30- 33 F4.1 mag Mag2AU ? Magnitude limit for separation 2 AU (1) 35- 38 F4.1 mag Mag5AU ? Magnitude limit for separation 5 AU (1) 40- 43 F4.1 mag Mag10AU ? Magnitude limit for separation 10 AU (1) 44 A1 --- Note [c] c: Companion detected (2)
Note (1): Detection limits include data from Henry (1991, Ph.D. Thesis, Arizona Univ., Tuscon) and effects of new parallaxes. These limits supersede those given in Henry & McCarthy (1990ApJ...350..334H). Note (2): See Henry & McCarthy (1990ApJ...350..334H) for details
Table4 : Multiple systems in the M dwarf five parsec sample. ------------------------------------------------------------ Name Type of multiplicity References ------------------------------------------------------------ Gliese 15 binary GJ,HM Gliese 65 binary GJ,HM Gliese 234 binary GJ,HM Gliese 412a binary GJ Gliese 473 binary GJ,HM Gliese 725 binary GJ,HM GJ 1245 triple GJ,HM Gliese 860 binary GJ,HM Gliese 866b triple HM,LH Notes: a: new parallax places system within 5 pc; not included in Henry and McCarthy (1990ApJ...350..334H) b: third component spectroscopically detected, private communications by A.Duquennoy and D.Latham References: GJ = Jahreiss (1997, Catalog of Nearby Stars, A&AS, in press) HM = Henry and McCarthy (1990ApJ...350..334H), LH = Leinert et al. (1990A&A...236..399L) Acknowledgements: Christoph Leinert References: Jahreiss (1997), Third Catalogue of Nearby Stars, in press, see Cat. V/70
(End) Patricia Bauer [CDS] 27-Feb-1997
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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