J/AJ/166/139 2022 SOAR speckle interferometry of double stars (Mason+, 2023)
Speckle Interferometry at SOAR in 2022.
Mason B.D., Tokovinin A., Mendez R.A., Costa E.
<Astron. J., 166, 139 (2023)>
=2023AJ....166..139M 2023AJ....166..139M
ADC_Keywords: Stars, double and multiple; Interferometry; Spectra, optical
Keywords: Interferometric binary stars
Abstract:
Results of the speckle-interferometry observations at the 4.1m
SOuthern Astrophysical Research Telescope obtained during 2022 are
presented: 2508 measurements of 1925 resolved pairs or subsystems and
785 nonresolutions of 611 targets; 26 pairs are resolved here for the
first time. This work continues our long-term effort to monitor
orbital motion in close binaries and hierarchical systems. A large
number of orbits have been updated using these measurements.
Description:
The observations reported here were obtained with HRCam, a fast imager
designed to work at the 4.1m SOAR telescope. We used mostly the
near-infrared I-filter (824±170nm) and the Stromgren y-filter
(543±22nm); the transmission curves of HRCam filters are given in
the instrument manual.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 125 2508 Measurements of double stars at SOAR
table3.dat 83 785 Unresolved stars
refs.dat 173 162 References used for table2
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See also:
B/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2020)
I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
I/350 : Gaia EDR3 (Gaia Collaboration, 2020)
J/AJ/106/1639 : Speckle observations of binary stars (McAlister+ 1993)
J/AJ/139/743 : Speckle interferometry in 2008-09 (Tokovinin+, 2010)
J/AJ/143/42 : Speckle interferometry SOAR in 2010 & 2011 (Hartkopf+, 2012)
J/AJ/144/56 : Speckle interferometry at SOAR in 2012 (Tokovinin+, 2012)
J/AJ/147/123 : Speckle interferometry SOAR in 2012-2013 (Tokovinin+, 2014)
J/AJ/150/151 : DSSI obs of binaries. VI. Measures in 2014 (Horch+, 2015)
J/AJ/150/50 : Speckle interferometry at SOAR in 2014 (Tokovinin+, 2015)
J/AJ/152/138 : Orbits based on speckle interferometry SOAR (Tokovinin, 2016)
J/AJ/153/212 : Observations of binary stars at WIYN telescope (Horch+, 2017)
J/AJ/154/110 : Orbits based on SOAR speckle interf. II. (Tokovinin, 2017)
J/AJ/155/235 : Speckle interf at SOAR in 2016 and 2017 (Tokovinin+, 2018)
J/A+A/622/A164 : Radial velocity curves of 11 Cepheids (Gallenne+, 2019)
J/AJ/157/56 : DSSI obs of binary & trinary star systems (Horch+, 2019)
J/ApJ/871/63 : Constrain your M dwarf. II. Nearby binaries (Mann+, 2019)
J/AJ/158/48 : Speckle interferometry at SOAR in 2018 (Tokovinin+, 2019)
J/AJ/160/251 : Rvel & orbital data, 5 triple stars (Tokovinin+, 2020)
J/AJ/160/7 : 2019 SOAR speckle interf of binary stars (Tokovinin+, 2020)
J/AJ/159/19 : SOAR TESS survey. I. (Ziegler+, 2020)
J/ApJS/254/42 : Hipparcos-Gaia (EDR3) Catalog of Accelerations (Brandt, 2021)
J/AJ/161/295 : Obs. Differential Speckle Survey Instrument. X. (Horch+, 2021)
J/AJ/161/144 : Inner & outer orbits in 13 multiple stars (Tokovinin, 2021)
J/AJ/162/41 : Speckle interferometry at SOAR in 2020 (Tokovinin+, 2021)
J/AJ/162/192 : SOAR TESS survey. II. Impact of stellar comps (Ziegler+, 2021)
J/AJ/164/58 : Speckle Interferometry at SOAR in 2021 (Tokovinin+, 2022)
J/AJ/163/178 : Solar Neighborhood. XLIV. M dwarfs with SOAR (Vrijmoet+, 2022)
J/AJ/165/180 : SOAR Speckle Survey, nearby hierarchi system (Tokovinin, 2023)
J/AJ/165/165 : Positional measurements of 4 triple systems (Tokovinin, 2023)
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 Idenfitication
12- 25 A14 --- Design Discoverer Designation
27- 38 A12 --- OName Other name
40- 47 F8.4 deg RAdeg [0/360] Right Ascension (J2000)
49- 56 F8.4 deg DEdeg [-89/30] Declination (J2000)
58- 66 F9.4 yr Epoch.Y [2018/2023] Epoch of observation
68- 69 A2 --- Filt Filter used; HA, I or y
71- 71 I1 --- N [1/4] Number of observations used
73- 77 F5.1 deg PA [0/360] Position angle
79- 82 F4.1 mas err [0/14.4] Error in tangential direction
84- 89 F6.4 arcsec Sep [0.01/4.88] Separation
91- 94 F4.1 mas e_Sep [0/15] The 1σ uncertainty in Sep
96- 99 F4.1 mag Delm [-1.2/7.3] Magnitude difference of pair
101-101 A1 --- f_Delm [*:q] Flag on Delm (1)
103-107 F5.1 deg (O-C)PA [-63.4/237]? The (O-C) in PA
109-114 F6.3 arcsec (O-C)Sep [-0.25/0.48]? The (O-C) in Sep
116-125 A10 --- Ref Reference code
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Note (1): Flags as follows:
* = Delm and the true quadrant are determined from the resolved
long-exposure image.
: = data are noisy and Delm is likely over-estimated.
q = true quadrant is established from the SAA image
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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 Idenfitication
12- 24 A13 --- Design Discoverer Designation
26- 35 A10 --- OName Other name
37- 44 F8.4 deg RAdeg [0/360] Right Ascension, decimal degrees (J2000)
46- 53 F8.4 deg DEdeg [-87/30] Declination, decimal degrees (J2000)
55- 63 F9.4 yr Epoch [2022/2023] Epoch of observation
65- 65 A1 --- Filt Filter used; I or y
67- 67 I1 --- N [1/4] Number of observations used
69- 73 F5.3 arcsec MinSep [0/0.11] Mininimum resolvable separation
75- 78 F4.2 mag Delm0.15 [0/5.3] 5σ magnitude difference at 0.15"
80- 83 F4.2 mag Delm1 [1.97/6.94] 5σ magnitude difference at 1"
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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 used
10- 28 A19 --- BIB BIBcode
30-156 A127 --- Authors Authors of the reference
158-173 A16 --- Cat. Catalog in VizieR
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 05-Apr-2024