J/AJ/150/50 Speckle interferometry at SOAR in 2014 (Tokovinin+, 2015)
Speckle interferometry at SOAR in 2014.
Tokovinin A., Mason B.D., Hartkopf W.I., Mendez R.A., Horch E.P.
<Astron. J., 150, 50 (2015)>
=2015AJ....150...50T 2015AJ....150...50T (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Interferometry
Keywords: binaries: general
Abstract:
The results of speckle interferometric observations at the Southern
Astrophysical Research Telescope (SOAR) telescope in 2014 are given. A
total of 1641 observations were taken, yielding 1636 measurements of
1218 resolved binary and multiple stars and 577 non-resolutions of 441
targets. We resolved for the first time 56 pairs, including some
nearby astrometric or spectroscopic binaries and ten new subsystems in
previously known visual binaries. The calibration of the data is
checked by linear fits to the positions of 41 wide binaries observed
at SOAR over several seasons. The typical calibration accuracy is
0.°1 in angle and 0.3% in pixel scale, while the measurement
errors are on the order of 3 mas. The new data are used here to
compute 194 binary star orbits, 148 of which are improvements on
previous orbital solutions and 46 are first-time orbits.
Description:
We report here a large set of binary star measurements made at the
4.1m Southern Astrophysical Research Telescope (SOAR) with the speckle
camera. This paper continues the previous series published by
Tokovinin et al. 2010 (cat. J/AJ/139/743), Tokovinin et al.
(2010PASP..122.1483T 2010PASP..122.1483T), Hartkopf et al. 2012 (cat. J/AJ/143/42),
Tokovinin 2012 (cat. J/AJ/144/56), and Tokovinin et al. 2014 (cat.
J/AJ/147/123). The observations reported here were obtained with the
high-resolution camera (HRCam)-a fast imager designed to work at the
4.1m SOAR telescope. For practical reasons, the camera was mounted on
the SOAR Adaptive Module (SAM). We used mostly the Stromgren y filter
(543/22nm) and the near-infrared I filter (788/132nm).
The observing runs occurred on 2014 Jan 15-16, 22, 2014 Mar 7-8, 2014
Apr 19-20, 2014 Oct 5-7, 2014 Nov 7-8, 2015 Jan 10-11.
A total of 1641 observations were taken, yielding 1636 measurements
(see Table2) of 1218 resolved binary and multiple stars and 577
non-resolutions (see Table3) of 441 targets. We resolved for the first
time 56 pairs (see Table4), including some nearby astrometric or
spectroscopic binaries and ten new subsystems in previously known
visual binaries.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 116 1636 Measurements of double stars at SOAR
table3.dat 84 577 Unresolved stars
table4.dat 79 56 Newly resolved pairs
table5.dat 143 194 Orbital elements
refs.dat 119 188 References
notes.dat 1081 63 Notes on new pairs
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See also:
B/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2014)
I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
J/AJ/147/123 : Speckle interferometry at SOAR in 2012-2013 (Tokovinin+, 2014)
J/AJ/144/56 : Speckle interferometry at SOAR in 2012 (Tokovinin+, 2012)
J/AJ/143/42 : Speckle interferometry with SOAR in 2010-2011 (Hartkopf+, 2012)
J/AJ/139/743 : Speckle interferometry in 2008-09 (Tokovinin+, 2010)
J/AJ/139/205 : 2007-2008 WIYN speckle observations of binaries (Horch+, 2010)
J/AJ/138/813 : Speckle interferometry at Mount Wilson Obs. (Hartkopf+, 2009)
J/AJ/137/3358 : Speckle interferometry of massive stars (Mason+, 2009)
J/AJ/135/1334 : Speckle interferometry at the USNO station (Hartkopf+, 2008)
J/AJ/132/2219 : Speckle interferometry at USNO. XII (Mason+, 2006)
J/AJ/128/3012 : Speckle interferometry at USNO. X. (Mason+, 2004)
J/AJ/119/3084 : ICCD speckle obs. of binary stars. XXIII. (Hartkopf+, 2000)
J/AJ/106/1639 : Speckle observations of binary stars (McAlister+ 1993)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- WDS WDS identification (from cat. B/wds)
12- 19 A8 --- Disc Discoverer designation (as adopted in the WDS)
21- 25 A5 --- Comp Components
27- 29 A3 --- --- [HIP]
31- 36 I6 --- HIP [210/120306]? Hipparcos number (cat. I/239)
37 A1 --- m_HIP [BC] HIP component
39- 49 A11 --- OName Other name (mostly HD identifier)
51- 59 F9.4 yr Epoch [2014.04/2015.04] Besselian epoch of observation
61 A1 --- Flt Filter used (V, R, I, H, or Stromgren y) (G1)
63 I1 --- No [1/6] Number of observations used
65- 69 F5.1 deg PA [0.2/359.7] Position angle θ
71- 74 F4.1 mas err [0/20.6] Internal error in tangential direction
ρσθ
76- 81 F6.4 arcsec Sep [0.02/3.4452] Separation ρ
83- 86 F4.1 mas e_Sep [0/20.7] The 1σ uncertainty in Sep
88- 91 F4.1 mag Dmag [0/7.5] Magnitude difference of pair Δm
93 A1 --- f_Dmag [*:q] Quadrant correction or noisy data (G2)
95- 99 F5.1 deg (O-C)t [-31.4/233.5]? The (O-C) in θ (PA)
101-106 F6.3 arcsec (O-C)r [-0.159/0.316]? The (O-C) in ρ (Sep)
108-116 A9 --- Ref Reference to orbit; in refs.dat file (1)
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Note (1): Code of reference to the orbit adopted in the Sixth Catalog (Hartkopf
et al., 2001AJ....122.3472H 2001AJ....122.3472H). Reference codes are also available at
http://ad.usno.navy.mil/wds/orb6/wdsref.txt. In Table2, new and revised
orbits computed in this work (Section 4) are referenced as "This work."
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- WDS WDS identification (from cat. B/wds) (1)
12- 21 A10 --- Disc Discoverer designation (as adopted in the WDS)
23- 27 A5 --- Comp Components
29- 31 A3 --- --- [HIP]
33- 38 I6 --- HIP [55/118040]? Hipparcos number (cat. I/239)
39 A1 --- m_HIP [BCF] HIP component
41- 50 A10 --- OName Other name
52- 60 F9.4 yr Epoch [2014.04/2015.04] Besselian epoch of observation
62 A1 --- Flt Filter used (V, R, I, H, or Stromgren y) (G1)
64 I1 --- No [1/5] Number of observations used
66- 70 F5.3 arcsec Sep [0.026/0.167] Mininimum resolvable separation
ρmin
72- 76 F5.2 mag Dm0.15 [0/5.37] The 5σ magnitude difference
Δm at 0.15''
78- 82 F5.2 mag Dm1 [1.05/7.42] The 5σ magnitude difference
Δm at 1''
84 A1 --- u_Dm1 [?:] Flag for noisy Δm data
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Note (1): For stars that do not have entries in the WDS, fictitious WDS-style
codes based on the position are listed.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- WDS WDS identification (from cat. B/wds)
12- 18 A7 --- Disc Discover designation (as adopted in the WDS)
20- 24 A5 --- Comp Components
26- 28 A3 --- --- [HIP]
30- 35 I6 --- HIP HIP identifier
36 A1 --- m_HIP [BC] HIP component
38- 46 F9.4 yr Epoch [2014.04/2015.04] Besselian epoch of observation
48 A1 --- Flt Filter used (I or Stromgren y) (G1)
50- 54 F5.1 deg PA [5.2/345.5] Position angle θ
56- 61 F6.4 arcsec Sep [0.0263/1.8351] Separation ρ
63- 65 F3.1 mag Dmag [0/6.4] Magnitude difference of pair Δm
67 A1 --- f_Dmag [*:q] Flag on Dmag (G2)
69- 74 A6 --- SpT Spectral type (1)
76- 79 F4.1 mas plx [-0.7/57.4] Hipparcos parallax π (cat. I/311)
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Note (1): As given in SIMBAD or estimated from absolute magnitude.
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- WDS WDS identification (from cat. B/wds)
12- 19 A8 --- Disc Discover designation (as adopted in the WDS)
21- 25 A5 --- Comp Components
27- 35 F9.4 yr Per [1.518/1491.21] Period
37- 44 F8.4 yr e_Per [0.001/672.53]? Uncertainty in period
46 A1 --- f_Per [*] Fixed period (1)
48- 55 F8.3 yr T0 [1681.32/2619.26] Epoch of periastron passage,
in fractional Besselian year
57- 62 F6.3 yr e_T0 [0/45.27]? Uncertainty in T0
64 A1 --- f_T0 [s] The flag "s" was not defined in the paper
66- 70 F5.3 --- e [0/1] Orbital eccentricity
72- 76 F5.3 --- e_e [0/0.432]? Uncertainty in e
78 A1 --- f_e [*] Fixed eccentricity (1)
80- 84 F5.1 deg Omega [2/358.1] Longitude of node Ω
86- 90 F5.1 deg e_Omega [0/556]? Uncertainty in Omega
92- 97 F6.4 arcsec a [0.0305/2.548] Semimajor axis of the orbit
99-104 F6.4 arcsec e_a [0/0.366]? Uncertainty in a
106-110 F5.1 deg i [11.1/168.7] Orbit inclination
112-115 F4.1 deg e_i [0/44]? Uncertainty in i
117 A1 --- f_i [*] Fixed inclination(1)
119-123 F5.1 deg omega [0.1/357.9] Longitude of periastron ω
125-129 F5.1 deg e_omega [0/141.1]? Uncertainty in omega
131 A1 --- f_omega [*] Fixed longitude (1)
133 I1 --- Gr [1/5] Rough grade for each orbit
(1=definitive to 5=indeterminate)
135 A1 --- f_Ref [a] "a" indicates an astrometric orbit
136-143 A8 --- Ref Reference code to a prior orbit if it exists;
in refs.dat file (2)
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Note (1): Element that were fixed (from, for example, a spectroscopic orbit).
Note (2): Code of reference to the orbit adopted in the Sixth Catalog (Hartkopf
et al., 2001AJ....122.3472H 2001AJ....122.3472H). Reference codes are also available at
http://ad.usno.navy.mil/wds/orb6/wdsref.txt. Blanks indicate the 43
first-time orbit solutions (plus three with prior astrometric orbits).
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Ref Reference identifier
10- 28 A19 --- BibCode Bibliographic code
30- 97 A68 --- Aut Author's name
99-119 A21 --- Cat Catalog in VizieR database
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- WDS WDS identification
12-1081 A1070 --- Note Notes
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Global Notes:
Note (G1):We used mostly the Stromgren y filter (543/22nm) and the near-infrared
I filter (788/132nm).
Note (G2): Flag on Dmag defined as follows:
* = Dmag and the true quadrant are determined from the resolved
long-exposure image;
: = Data are noisy and Dmag is likely over-estimated;
q = True quadrant is established from the shift-and-add (SAA or "lucky")
image.
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History:
From electronic version of the journal
(End) Prepared by [AAS]; Sylvain Guehenneux [CDS] 24-Nov-2015