How Double Star Astronomy May Develop After HIPPARCOS

Celestial Bodies ◽

Input Catalogue

AbstractNow that the HIPPARCOS satellite safely revolves on its “degraded” orbit — after the exploit of the ESA technicians to rescue it from the faulty ignition of its apogeum boost motor — and regularly provides the information expected for reaching the initial aim of the project, one may turn to examine the possible exploitation of the final HIPPARCOS Catalogue.In the present paper, we describe how double and multiple stars have been introduced in the Input Catalogue and what may be expected from their observation. We also try to evaluate how much the final HIPPARCOS data may influence future researches on these celestial bodies and what kind of ground–based observation programmes should be conducted in order to support the space results.

The Hipparcos Double and Multiple Star Solutions

Highlights of Astronomy ◽

10.1017/s1539299600021985 ◽

1998 ◽

Vol 11 (1) ◽

pp. 539-541

Author(s):

F. Mignard

Keyword(s):

Detailed Data ◽

Multiple Star ◽

Multiple Systems ◽

Multiple Stars ◽

Different Types ◽

Hipparcos Catalogue ◽

Double And Multiple Stars

Abstract The Hipparcos Catalogue provides general astrometric and photometric information on double and multiple stars in specific fields of the main Catalogue and detailed data on the components in the various sections of a dedicated annex: the Double and Multiple Systems Annex (DMSA). Overall statistics of these solutions are presented for the 13211 entries of this annex and the different types of solutions are outlined.

Astrometric and Astrophysical Insights into the Hipparcos Data Quality

10.1017/s0074180900227885 ◽

1995 ◽

Vol 166 ◽

pp. 83-86 ◽

Cited By ~ 1

Author(s):

M.A.C. Perryman

Keyword(s):

Data Quality ◽

Error Estimates ◽

Photographic Plate ◽

Meridian Circle ◽

Proper Motions ◽

Photometric Variability ◽

Multiple Stars ◽

Hipparcos Catalogue ◽

Internal Error

Internal error estimates and external verifications indicate that median errors for the 120000 stars in the Hipparcos Catalogue, for each of the five astrometric parameters, will be in the range 1–1.5 mas. This paper illustrates some of the statistical investigations that have been conducted so far, including comparisons with catalogues of ground-based positions and proper motions, the structure of the Hertzsprung-Russell diagram, results of the reanalysis of meridian circle and photographic plate data using the positions determined from the satellite, and expected results on double and multiple stars and photometric variability.

Classical Observations of Visual Binary and Multiple Stars

Proceedings of the International Astronomical Union ◽

10.1017/s1743921307003857 ◽

2006 ◽

Vol 2 (S240) ◽

pp. 88-96

Author(s):

Brian D. Mason

Keyword(s):

Field Work ◽

Speckle Interferometry ◽

Double Star ◽

The Past ◽

Multiple Stars ◽

Successful Work ◽

Different Types ◽

Star Database ◽

Types Of Information

AbstractChanges in the double star database are highlighted, describing various methods of observation (both historically and those of the past few years) and their effectiveness in different regimes of separation space. The various niches for wide- and narrow-field work as they apply to double and multiple stars are examined and the different types of information which each can provide are described. Despite the significant growth of the double star database, much can still be done, such as finding lost pairs, filling in missing parameters so that observing programs can select all stars appropriate to their capabilities, or providing at least gross kinematic descriptions. After more than 20 years of successful work, speckle interferometry and conventional CCD astrometry have replaced filar micrometry and photography as preferred classical techniques. Indeed, most work in filar micrometry is now being done by amateurs. Work on pairs described as neglected in the last major WDS data release (2001) is given as a specific example. Finally, the continued need to publish data in classical double star parameters is also discussed.

The Catalogue of the Components of Double and Multiple Stars (CCDM) - First Edition

10.1017/s0074180900228714 ◽

1995 ◽

Vol 166 ◽

pp. 395-395 ◽

Cited By ~ 1

Author(s):

J. Dommanget ◽

O. Nys

Keyword(s):

Data Base ◽

Multiple Star ◽

Multiple Systems ◽

Double Stars ◽

Multiple Stars ◽

General Data ◽

Input Catalogue ◽

Better Than

The Hipparcos mission required the realisation of an Input Catalogue giving the positions of 100.000 stars (single or components of double and multiple systems) to an accuracy better than 1″5. At the start of this work (1981) no specific catalogue of double and multiple stars provided these data. The only general data base on double stars available to us, giving positions to ±1′, was the Index (1961,0) updated at the USNO by C. E. Worley till 1976,5 and of which a copy was communicated by P. Muller of the Observatoire de Meudon. It has then been decided to reformat this Catalogue in such a way as to allow the introduction of all necessary information for the mission. This permitted a correct cross-identification with the Hipparcos Input Catalogue (of finally 118.000 stars). It was later called: the Catalogue of the Components of Double and Multiple stars (CCDM). Since then, it has been developed and its aim remains to furnish the best accurate locations and descriptions of the double and multiple systems on the sky for all double and multiple star research.

Raw Data from HIPPARCOS Double and Multiple Stars

International Astronomical Union Colloquium ◽

10.1017/s0252921100006874 ◽

1992 ◽

Vol 135 ◽

pp. 396-402 ◽

Cited By ~ 1

Author(s):

P.L. Bernacca ◽

F. Donati ◽

F. Mignard

Keyword(s):

Data Analysis ◽

Field Of View ◽

Raw Data ◽

Multiple Stars ◽

Input Catalogue ◽

Fourier Model

AbstractThe HIPPARCOS Input Catalogue comprises about 118,000 entries of which 16,000 are flagged as related to double or multiple stars. Data analysis begins by fitting Fourier model signals to the observations: the intensity coefficients and the phases at several locations on the spatial modulator are estimated and a first rough recognition of possibly unknown non-single stars is performed. After calibration corrections, a normal point is produced at every transit of a star across the field of view of the telescope and the improved parameters are stored for extensive multiplicity testing and relative astrometry when enough scans are accumulated.

A Very Special Catalogue: The Hipparcos Input Catalogue

10.1017/s007418090013966x ◽

1988 ◽

Vol 133 ◽

pp. 245-257

Author(s):

C. Turon

Keyword(s):

Observational Constraints ◽

List Type ◽

Type Number ◽

Multiple Stars ◽

Final Data ◽

Input Catalogue

The various characteristics of the HIPPARCOS Input Catalogue are described:–How to select 110 000 stars for HIPPARCOS observation from the 210 000 proposed stars, taking into account the following sometimes conflicting requirements : satisfy a maximum of scientific programmes and respect the observational constraints inherent in the HIPPARCOS satellite operation ?–What are the present results regarding the principal astrometric programmes ?–How to process the specific problems which are raised by the HIPPARCOS observation of double and multiple stars and of stars in dense areas ?–Which compilations and observations have been undertaken and are in progress within the frame of the Input Catalogue preparation ? What will be the quality of the final data ?Finally, the contents of the catalogues and annexes that will be published are briefly presented.

HIPPARCOS First Results in the Double Star Photometry

International Astronomical Union Colloquium ◽

10.1017/s0252921100006904 ◽

1992 ◽

Vol 135 ◽

pp. 421-428

Author(s):

F. Mignard ◽

J.L. Falin ◽

M. Froeschlé

Keyword(s):

Double Star ◽

Multiple Systems ◽

Double Stars ◽

Multiple Stars ◽

Accuracy And Precision ◽

First Results ◽

Main Detector ◽

Input Catalogue ◽

Magnitude Difference ◽

Better Than

AbstractIn addition to its astrometric capabilities the HIPPARCOS main detector proves to be a good phototometer. The main features of the photometric reduction applied to double stars are outlined. We show how it is possible to discriminate single stars from multiple stars from the photometric signal. Results presented are based on about 16000 stars recognized as non-single, of which 8000 were not known to be double in the HIPPARCOS Input Catalogue. Magnitudes for multiple systems as a whole are derived with a precision usually better than 0.005 mag while the magnitude of each component is recovered up to magnitude difference of 3 mag, but with less accuracy and precision.

Hipparcos Stars in The GCVS

Highlights of Astronomy ◽

10.1017/s1539299600022048 ◽

1998 ◽

Vol 11 (1) ◽

pp. 550-550

Author(s):

N.N. Samus

Keyword(s):

Data Base ◽

Variable Stars ◽

Spectroscopic Binaries ◽

Spectroscopic Binary ◽

Multiple Stars ◽

General Catalogue ◽

Hipparcos Catalogue ◽

Colour Indices

Prof. M. Grenon asked the team of the General Catalogue of Variable Stars to attribute GCVS names to new Hipparcos variables in order to present, in the Hipparcos Catalogue, the information on these stars already with final designations. We received lists of 5665 variables. Of them, 3157 qualified to the standard GCVS criteria and will appear in the 74th Namelist of variable stars. The main problems in compiling the Namelist were the following: 1. Cases of spurious variability for double and multiple stars and for misidentified stars (wrong colour indices used in reductions). Some wrong identifications come from the SIMBAD data base. 2. Lacking identifications with catalogues of spectroscopic binaries. Some stars attributed to slowly pulsating B variables are in fact ellipsoidal variables. HIP 98954 = V1472 Aql was classified as a semiregular star, but it is a rather unusual, probably eclipsing, star (Samus, 1997), a known spectroscopic-binary M giant with a 200d period (Lucke and Mayor, 1982).

Double Star Recognition

Highlights of Astronomy ◽

10.1017/s1539299600009412 ◽

1992 ◽

Vol 9 ◽

pp. 423-423

Author(s):

M. Frœschle ◽

F. Mignard ◽

J.L. Falin

Keyword(s):

Statistical Tests ◽

Real Data ◽

Double Star ◽

Field Of View ◽

Double Stars ◽

Signal Parameters ◽

Multiple Stars ◽

Stellar Source

AbstractHipparcos observations provide a wealthy source of discovery of new double and multiple stars. We have developed adequate procedures to recognize in the signal parameters the multiplicity of the stellar source passing through the Hipparcos field of view. These procedures are outlined together with the design of the statistical tests employed. Sampling on real data indicates that about 6000 new double stars will be detected at the mission completion.

Double Star Astrometry with the Hipparcos Data

10.1017/s0074180900227861 ◽

1995 ◽

Vol 166 ◽

pp. 69-76

Author(s):

F. Mignard

Keyword(s):

Position Angle ◽

Double Star ◽

Recognition Procedure ◽

Double Stars ◽

Multiple Stars ◽

Relative Coordinates ◽

Double And Multiple Stars

As we approach the final processing of the observations carried out by HIPPARCOS, in particular for the double and multiple stars, it is possible to provide reliable statistics on the number of such objects detected and on the quality of the relative and absolute astrometry and photometry. About 24 000 stars have been recognized as non-single, including 11 000 already known as double and multiple before the mission and 13000 discovered by Hipparcos. Also, a subset of 16 000 stars among the 24 000 have been successfully solved for their relative coordinates (position angle and separation) with an accuracy in the range of 3 to 30 mas, including 7000 new double stars. I outline in this paper the principle of the internal recognition procedure and present some statistics on the solution.