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J/AJ/137/3358       Speckle interferometry of massive stars       (Mason+, 2009)

The high angular resolution multiplicity of massive stars. Mason B.D., Hartkopf W.I., Gies D.R., Henry T.J., Helsel J.W. <Astron. J., 137, 3358-3377 (2009)> =2009AJ....137.3358M
ADC_Keywords: Stars, double and multiple ; Interferometry Keywords: binaries: general - binaries: visual - stars: early-type - stars: individual (iota Ori, delta Ori, delta Sco) - techniques: interferometric Abstract: We present the results of a speckle interferometric survey of Galactic massive stars that complements and expands upon a similar survey made over a decade ago. The speckle observations were made with the Kitt Peak National Observatory and Cerro Tololo Inter-American Observatory 4 m telescopes and USNO speckle camera, and they are sensitive to the detection of binaries in the angular separation regime between 0.03" and 5" with relatively bright companions (ΔV<3). We report on the discovery of companions to 14 OB stars. In total we resolved companions of 41 of 385 O-stars (11%), 4 of 37 Wolf-Rayet stars (11%), and 89 of 139 B-stars (64%; an enriched visual binary sample that we selected for future orbital determinations). Description: Observations of northern hemisphere objects were obtained with the Kitt Peak National Observatory (KPNO) 4m Mayall reflector during the period 2005 November 8-13; southern hemisphere pairs were observed at the Cerro Tololo Inter-American Observatory (CTIO) 4m Blanco reflector during the period 2006 March 9-13. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 86 19 Newly resolved pairs table2.dat 129 190 Speckle interferometric measurements of double stars table3.dat 107 445 Null Companion Detection of target lists table4.dat 76 370 Binary properties of Galactic O-stars tablea1.dat 129 376 Speckle interferometric measurements of double stars tablea2.dat 107 226 Null companion detection of other lists notes.dat 80 137 Individual notes refs.dat 130 138 References
See also: B/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2011) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 2 I2 h RAh Right ascension (J2000) 3- 4 I2 min RAm Right ascension (J2000) 5- 9 F5.2 s RAs Right ascension (J2000) 10 A1 --- DE- Declination sign (J2000) 11- 12 I2 deg DEd Declination (J2000) 13- 14 I2 arcmin DEm Declination (J2000) 15- 18 F4.1 arcsec DEs Declination (J2000) 20- 31 A12 --- Disc Discoverer designation 33- 46 A14 --- OName Other name 48- 66 A19 --- SpType MK spectral classification 67- 71 F5.2 mag Vmag ?=- V magnitude in AB system 73- 86 A14 --- Note Individual notes (1)
Note (1): Notes as follows: 1 = Spectroscopic triple noted by G. Torres (2006, priv. comm.). Not examined in the earlier speckle survey of the Pleiades (Mason et al. 1993, Cat. J/AJ/106/637). 2 = Companion not detected in the earlier speckle survey of the Hyades (Mason et al., 1993AJ....105..220M). 3 = A new close pair associated with the B component of this multiple system. The precise coordinates above are for the A component. 4 = New companion was "preconfirmed" with 2MASS data (2003 all-sky release 5 = This was a possible occultation target for the New Horizons mission.
Byte-by-byte Description of file: table2.dat tablea1.dat
Bytes Format Units Label Explanations
1- 10 A10 --- WDS WDS designation (HHMMm+DDMM, Cat. B/wds) 12- 19 A8 --- Disc Discoverer designation 21- 25 A5 --- Comp System components 27- 40 A14 --- OName Other name 42- 50 F9.4 yr EpObs ? Epoch of Observation (Besselian year) 52- 56 F5.1 deg theta ? Position angle θ 57 A1 --- u_theta Uncertainty flag on theta 59- 63 F5.3 arcsec rho ? Separation ρ 64 A1 --- u_rho Uncertainty flag on rho 66- 68 F3.1 mag Dmag ? Difference of magnitude between components 70 I1 --- Nobs ? Number of observations 72- 77 F6.1 deg (O-C)t ? The O-C position angle residual 79- 84 F6.3 arcsec (O-C)r ? The O-C separation residual 86-115 A30 --- Ref Reference, in refs.dat file 117-126 A10 --- Note Additional note(s), in notes.dat file 128-129 A2 --- List Sample description (G1)
Byte-by-byte Description of file: table3.dat tablea2.dat
Bytes Format Units Label Explanations
1- 2 I2 h RAh Hour of Right Ascension (J2000) 4- 5 I2 min RAm Minute of Right Ascension (J2000) 7- 11 F5.2 s RAs Second of Right Ascension (J2000) 13 A1 --- DE- Sign of the Declination (J2000) 14- 15 I2 deg DEd Degree of Declination (J2000) 17- 18 I2 arcmin DEm Arcminute of Declination (J2000) 20- 23 F4.1 arcsec DEs Arcsec of Declination (J2000) 25- 45 A21 --- ID1 Cluster or other Designation 47- 61 A15 --- ID2 V*, ** or other Designation 63- 84 A22 --- ID3 HD, HIP or other Designation 86- 90 A5 --- List List code (G1) 92-100 F9.4 yr EpObs Epoch of Observation (Besselian year) 102 A1 --- Tel [CK] Telescope code: C=CTIO-4m, K=KPNO-4m 104-107 A4 --- Note Additional notes, in notes.dat file (Sn.n refers to a specified section of paper)
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 16 A16 --- Name Star name 18- 22 A5 --- Status Spectroscopic status 24- 25 I2 --- Num ? Number of visible components 26 A1 --- n_Num ["] primary is in the table (1) 27 A1 --- f_Num [:] : for star lacks speckle observations 29- 52 A24 --- Env Environment 54- 56 A3 --- Run Runaway star (yes/no) 58- 76 A19 --- SpRef Spectroscopic reference
Note (1): " = star is a member of a visual system whose primary component also appears in this table (usually just above or below this entry)
Byte-by-byte Description of file: notes.dat
Bytes Format Units Label Explanations
1- 2 A2 --- Note Code of the note 4- 80 A77 --- Text Text of the note
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 30 A30 --- Ref Reference designation 32-130 A99 --- BibCode BibCode or complete reference
Global Notes: Note (G1): List code as follows: B* = B star sample O1 = Mason et al. (1998AJ....115..821M) O star sample O2 = new O star sample W1 = Hartkopf et al. (1999AJ....118..509H) WR sample W2 = additional WR stars observed blank = no list (table A2)
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 26-Aug-2011
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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