J/AJ/162/41 Speckle interferometry at SOAR in 2020 (Tokovinin+, 2021)
Speckle interferometry at SOAR in 2020.
Tokovinin A., Mason B.D., Mendez R.A., Costa E., Mann A.W., Henry T.J.
<Astron. J., 162, 41-41 (2021)>
=2021AJ....162...41T 2021AJ....162...41T (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple; Stars, K-type; Optical; Infrared;
Interferometry; Positional data
Keywords: Binary stars; Multiple stars; Stellar associations
Abstract:
The results of speckle interferometric observations at the 4.1m
Southern Astrophysical Research Telescope in 2020, as well as earlier
unpublished data, are given, totaling 1735 measurements of 1288
resolved pairs and nonresolutions of 1177 targets. We resolved for the
first time 59 new pairs or subsystems in known binaries, mostly among
nearby dwarf stars. This work continues our long-term speckle program.
Its main goal is to monitor orbital motion of close binaries,
including members of high-order hierarchies and Hipparcos pairs in the
solar neighborhood. We also report observations of 892 members of
young moving groups and associations, where we resolved 103 new pairs.
Description:
This paper presents results of the large survey of the young moving
groups and associations (YMG) population and of the K-type dwarfs in
the solar neighborhood. The HRCam at 4.1m Southern Astrophysical
Research Telescope (SOAR) is used by various programs, executed in a
concerted and optimized way and complemented by the uniform data
reduction and calibration procedures.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 141 1735 *Measurements of double stars at SOAR
table3.dat 98 1356 Unresolved stars
refs.dat 125 121 References used for table2
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Note on table2.dat : Reference codes for this Table are also available at
http://ad.usno.navy.mil/wds/orb6/wdsref.txt
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See also:
B/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2020)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)
J/AJ/139/743 : Speckle interferometry in 2008-09 (Tokovinin+, 2010)
J/AJ/143/42 : Speckle interferometry with SOAR 2010 & 2011 (Hartkopf+, 2012)
J/AJ/144/56 : Speckle interferometry at SOAR in 2012 (Tokovinin+, 2012)
J/AJ/147/123 : Speckle interferometry with SOAR in 2012-2013 (Tokovinin+, 2014)
J/AJ/150/50 : Speckle interferometry at SOAR in 2014 (Tokovinin+, 2015)
J/AJ/150/151 : DSSI observations binaries. VI. Measures in 2014 (Horch+, 2015)
J/MNRAS/448/2737 : New PMS K/M Stars in Upper Scorpius (Rizzuto+, 2015)
J/AJ/153/212 : Observations of binary stars at WIYN telescope (Horch+, 2017)
J/A+A/620/A172 : Solar neighbourhood young stars 3D mapping (Zari+, 2018)
J/AJ/155/235 : Speckle interferometry at SOAR in 2016 & 2017 (Tokovinin+, 2018)
J/ApJ/856/23 : BANYAN. XI. The BANYAN Σ algorithm (Gagne+, 2018)
J/A+A/626/A31 : Radial velocities of nearby stars (Sperauskas+, 2019)
J/AJ/157/56 : DSSI observations binary & trinary star systems (Horch+, 2019)
J/AJ/158/148 : Photometry of beta Lyr by BRITE satellites.II (Rucinski+, 2019)
J/AJ/159/15 : Binary stars in Upper Scorpius (Tokovinin+, 2020)
J/AJ/159/19 : SOAR TESS survey. I. (Ziegler+, 2020)
J/AJ/160/7 : 2019 SOAR speckle interferometry binary stars (Tokovinin+, 2020)
J/AJ/160/251 : Radial veloc. & orbital data, 5 triple stars (Tokovinin+, 2020)
J/AJ/161/144 : Inner & outer orbits 13 multiple stars systems (Tokovinin, 2021)
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- 27 A16 --- Design Discoverer Designation
29- 40 A12 --- OName Other name
42- 49 F8.4 deg RAdeg [0/360] Right ascension (J2000)
51- 58 F8.4 deg DEdeg [-88/30] Declination (J2000)
60- 68 F9.4 yr Tobs [2016/2021] Epoch of observation
70- 71 A2 --- Filt Filter used; BVRIy
73- 74 I2 --- Nobs [1/6] Number of observations used
76- 83 F8.1 deg PA [0/360] Position angle
85- 89 F5.1 mas err [0/317] Internal error in tangential direction
91- 98 F8.4 arcsec Sep [0.01/4.86]? Separation
100-104 F5.1 mas e_Sep [0/22] ? The 1σ uncertainty in Sep
106-112 F7.1 mag dmag [-0.2/7.5]Magnitude difference of pair
114-114 A1 --- f_dmag [*:q] Flag on dmag (1)
116-123 F8.1 deg (O-C)PA ? The (O-C) in PA
125-132 F8.3 arcsec (O-C)Sep ? The (O-C) in Sep
134-141 A8 --- 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 (282 occurrences)
: = data are noisy and Delm is likely over-estimated, or tentative
resolution (119 occurrences)
q = true quadrant is established from the SAA image (581 occurrences)
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- WDS WDS Idenfitication
12- 27 A16 --- Design Discoverer Designation
29- 40 A12 --- OName Other name
42- 49 F8.4 deg RAdeg [0/360] Right ascension (J2000)
51- 58 F8.4 deg DEdeg [-85/26] Declination (J2000)
60- 68 F9.4 yr Tobs [2016/2021] Epoch of observation
70- 71 A2 --- Filt Filter used; BRIy
73- 74 I2 --- Nobs [1/5] Number of observations used
76- 82 F7.3 arcsec Res [0.02/0.18] Angular resolution
84- 90 F7.2 mag dmag0.15 [0/5.33] 5σ magnitude difference at 0.15"
92- 98 F7.2 mag dmag1 [0.42/7.05] 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 code
10- 29 A20 --- Autor Main autor
31- 49 A19 --- BIB BIBcode
51- 66 A16 --- Cat. Vizier catalogue
68-125 A58 --- Note Additional note
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 12-Nov-2021