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J/AJ/132/2219       Speckle interferometry at USNO. XII      (Mason+, 2006)

Speckle interferometry at the US Naval Observatory. XII. Mason B.D., Hartkopf W.I., Wycoff G.L., Holdenried E.R. <Astron. J., 132, 2219-2230 (2006)> =2006AJ....132.2219M
ADC_Keywords: Stars, double and multiple Keywords: binaries: general - binaries: visual - techniques: interferometric Abstract: The results of 1657 speckle interferometric observations of double stars, made with the 26-inch (66cm) refractor of the US Naval Observatory, are presented. Each speckle interferometric observation of a system represents a combination of over 2000 short-exposure images. These observations are averaged into 1111 mean relative positions and range in separation from 0.16" to 16.99", with a median separation of 1.65". This is the 12th in a series of papers presenting measurements obtained with this system and covers the period 2005 January 3-December 29. Included in these data are 30 older measurements whose positions were previously deemed possibly aberrant but are no longer classified this way following a confirming observation. Sixteen of these systems have new orbital elements, which are presented here as well. For eta Coronae Borealis (STF 1937) we determine masses of 1.207 and 1.077M and an orbital parallax of 54.95mas. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 57 970 Speckle interferometric measurements of double stars table2.dat 43 15 Binaries not found table3.dat 74 175 Speckle interferometric measurements and residuals to systems with orbits refs.dat 92 67 References
See also: J/AJ/117/1905 : Speckle interferometry at USNO. II. (Germain+, 1999) J/AJ/117/2511 : Speckle interferometry at USNO. III (Germain+, 1999) J/AJ/118/1395 : Speckle interferometry at USNO. IV. (Douglass+, 1999) J/AJ/119/3071 : Speckle interferometry at USNO. V. (Douglass+, 2000) J/AJ/120/1120 : Speckle interferometry at USNO. VI. (Mason+, 2000) J/AJ/122/1586 : Speckle interferometry at USNO. VII. (Mason+, 2001) J/AJ/124/2254 : Speckle interferometry at USNO. VIII. (Mason+, 2002) J/AJ/127/539 : Speckle interferometry at USNO. IX. (Mason+, 2004) J/AJ/128/3012 : Speckle interferometry at USNO. X. (Mason+, 2004) J/AJ/131/2687 : Speckle interferometry at USNO. XI. (Mason+, 2004) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 10 A10 --- WDS WDS identification (HHMM.m+DDMM) 12- 19 A8 --- Disc Discoverer designation 21- 24 A4 --- m_Disc System components concerned (if not AB) 26- 33 F8.3 yr Epoch Epoch of observation 35- 39 F5.1 deg PA Position angle 40 A1 --- u_PA Uncertainty flag for PA 42- 46 F5.2 arcsec Sep Separation 47 A1 --- u_Sep Uncertainty flag for Sep 49 I1 --- N Number of observations contained in the mean 51- 57 A7 --- Note Individual notes (1)
Note (1): Notes as follows: C = Confirming Observation. 1 = Data collected for Mason et al. (2006, Cat. J/AJ/131/2697), but the measure was deemed too different from historical measures. The large change is now confirmed. 2 = Large change in separation and/or position angle. 3 = Linear elements determined. See Hartkopf et al. (2006b). 4 = New pair, discovered while searching for WDS 18482-1820=J1636, see text 5 = New companion to 21138+3711=COU1816, see text 50-185 = Number of years since last measure
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 10 A10 --- WDS WDS designation (HHMMm+DDMM, J2000) 12- 19 A8 --- Disc Discoverer designation 22- 25 I4 yr Epoch Epoch of observation 27- 29 I3 deg PA Position Angle 31- 33 F3.1 deg Sep Separation 35- 38 F4.1 mag mag1 Magnitude of the primary 40- 43 F4.1 mag mag2 Magnitude of the secondary
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 10 A10 --- WDS WDS identification (HHMM.m+DDMM) 12- 19 A8 --- Disc Discoverer designation 21- 24 A4 --- m_Disc System components concerned (if not AB) 26- 33 F8.3 yr Epoch ? Epoch of observation 35- 39 F5.1 deg PA ? Position angle 41- 44 F4.2 arcsec Sep ? Separation 46- 47 I2 --- N ? Number of observations contained in the mean 49- 53 F5.1 deg (O-C)PA The O-C position angle residual 55- 59 F5.2 arcsec (O-C)Sep The O-C separation residual 61- 68 A8 --- Ref Observation reference, in refs.dat file 70- 74 A5 --- Notes Notes on system observed (1)
Note (1): Flag as follows: * = System used in characterizing errors 1 = Residuals may indicate a slight runoff in elements; however, available data are deemed insufficient for a new orbital calculation at this time 2 = New orbital elements are given in Table 7, with ephemerides in Table 8; the orbit is illustrated in Figure 2a 3 = This orbit might possibly be fit better with linear elements. See Hartkopf et al. (2006, in prep.) 4 = This measure was inconsistent with previous measures, so not included in Mason et al. (2004, Cat. J/AJ/128/3012). These data confirm the residual trend 5 = This measure was inconsistent with previous measures, so not included in Mason et al. (2006, Cat. J/AJ/131/2687). These data confirm the residual trend. 6 = New orbital elements are given in Table 4, with ephemerides in Table 5; the orbit is illustrated in Figure 1 7 = This system was expected to show significant motion over the calendar year, so multiple observations were obtained. 8 = New orbital elements are given in Table 7, with ephemerides in Table 8; the orbit is illustrated in Figure 2
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 8 A8 --- Ref Reference code 10- 28 A19 --- BibCode BibCode 30- 50 A21 --- Author Author's name 52- 92 A41 --- Com Comments
History: From electronic version of the journal References: Douglass et al., Paper I 1997ApJS..111..289D Germain et al., Paper II 1999AJ....117.1905G, Cat. J/AJ/117/1905 Germain et al., Paper III 1999AJ....117.2511G, Cat. J/AJ/117/2511 Douglass et al., Paper IV 1999AJ....118.1395D, Cat. J/AJ/118/1395 Douglass et al., Paper V 2000AJ....119.3071D, Cat. J/AJ/119/3071 Mason et al., Paper VI 2000AJ....120.1120M, Cat. J/AJ/120/1120 Mason et al., Paper VII 2001AJ....122.1586M, Cat. J/AJ/122/1586 Mason et al., Paper VIII 2002AJ....124.2254M, Cat. J/AJ/124/2254 Mason et al., Paper IX 2004AJ....127..539M, Cat. J/AJ/127/539 Mason et al., Paper X 2004AJ....128.3012M, Cat. J/AJ/128/3012 Mason et al., Paper XI 2006AJ....131.2687M, Cat. J/AJ/131/2687 Mason et al., Paper XIII 2007AJ....134.1671M, Cat. J/AJ/134/1671 Mason et al., Paper XIV 2008AJ....136.2223M, Cat. J/AJ/136/2223 Mason et al., Paper XV 2010AJ....140..480M, Cat. J/AJ/140/480 Mason et al., Paper XVI 2011AJ....141..157M, Cat. J/AJ/141/157 Mason et al., Paper XVII 2011AJ....142...46M, Cat. J/AJ/142/46 Mason et al., Paper XVIII 2012AJ....143..124M, Cat. J/AJ/143/124
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 24-Jul-2008
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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