Access to Astronomical Catalogues

← Click to display the menu
J/AJ/141/45         Speckle observations of HIP stars        (Horch+, 2011)

Observations of binary stars with the Differential Speckle Survey Instrument. II. Hipparcos stars observed in 2010 January and June. Horch E.P., Gomez S.C., Sherry W.H., Howell S.B., Ciardi D.R., Anderson L.M., Van Altena W.F. <Astron. J., 141, 45 (2011)> =2011AJ....141...45H
ADC_Keywords: Stars, double and multiple ; Photometry Keywords: binaries: visual - techniques: high angular resolution - techniques: interferometric - techniques: photometric Abstract: The results of 497 speckle observations of Hipparcos stars and selected other targets are presented. Of these, 367 were resolved into components and 130 were unresolved. The data were obtained using the Differential Speckle Survey Instrument at the WIYN 3.5m Telescope. (The WIYN Observatory is a joint facility of the University of Wisconsin-Madison, Indiana University, Yale University, and the National Optical Astronomy Observatories.) Since the first paper in this series, the instrument has been upgraded so that it now uses two electron-multiplying CCD cameras. The measurement precision obtained when comparing to ephemeris positions of binaries with very well known orbits is approximately 1-2mas in separation and better than 0fdg6 in position angle. Differential photometry is found to be in very good agreement with Hipparcos measures in cases where the comparison is most relevant. We derive preliminary orbits for two systems. Description: The observations presented here come from two observing runs using the WIYN Telescope at Kitt Peak, 2010 January 2-4 and June 18-25. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 81 367 Double star speckle measures with DSSI table2.dat 119 130 High-quality non-detections and 5σ detection limits
See also: B/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2012) I/239 : The Hipparcos and Tycho Catalogues (ESA 1997) I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 10 A10 --- WDS Washington Double Star catalog designation, HHMMm+DDM (J2000) 12- 21 A10 --- Name Object identification (HR,ADS DM,etc.) 23- 35 A13 --- Dis Discoverer Designation 37- 42 I6 --- HIP ? HIPPARCOS catalog identification 44- 52 F9.4 yr Date Fraction of the Besselian year observation date 54- 58 F5.1 deg PA Observed position angle θ; east of north 60 A1 --- f_PA [b] Quadrant inconsistent (1) 62- 67 F6.4 arcsec Sep Observed separation ρ 69- 72 F4.2 mag Dm562 ? Magnitude difference in 562nm filter 74 A1 --- f_Dm562 [ac] Quadrant ambiguous or inconsistent (1) 76- 79 F4.2 mag Dm692 ? Magnitude difference in 692nm filter 81 A1 --- f_Dm692 [acde] Quadrant problem, or other remark (1)
Note (1): Flags as follows: b = In both filters, the quadrant obtained appears to be inconsistent with previous measures in the 4th Interferometric Catalog. However, it is left as measured here pending future determinations a = Quadrant ambiguous c = Quadrant is inconsistent with previous measures in the 4th Interferometric Catalog in the filter marked. The position angle has been changed prior to averaging with the other observation d = Two 1000-frame observations were coadded to obtain these results e = Three 1000-frame observations were coadded to obtain these results
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 10 A10 --- Name Source name, in WDS format, HHMMm+DDM (J2000) 12- 17 I6 --- HIP HIPPARCOS catalog identification 19- 27 F9.4 yr Date Observation date, in Besselian year 29- 32 F4.2 mag lDm562 5σ limit in the 562nm filter 34- 37 F4.2 mag lDm692 5σ limit in the 692nm filter 39-119 A81 --- Notes Notes
History: From electronic version of the journal References: Horch et al., Paper I 2009AJ....137.5057H Horch et al., Paper III 2011AJ....141..180H Horch et al., Paper IV 2012AJ....144..165H Horch et al., Paper V 2015AJ....149..151H Horch et al., Paper VI 2015AJ....150..151H, cat. J/AJ/150/151
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 24-Jul-2012
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

catalogue service