scholarly journals Binary Star Database (BDB): New Developments and Applications

Data ◽  
2018 ◽  
Vol 3 (4) ◽  
pp. 39 ◽  
Author(s):  
Oleg Malkov ◽  
Aleksey Karchevsky ◽  
Pavel Kaygorodov ◽  
Dana Kovaleva ◽  
Nikolay Skvortsov
Keyword(s):  
Binary Stars ◽  
Binary Star ◽  
Stellar Systems ◽  
Database Integration ◽  
New Developments ◽  
Multiple Systems ◽  
Star Catalogue ◽  
Star Database

Binary star DataBase (BDB) is the database of binary/multiple systems of various observational types. BDB contains data on physical and positional parameters of 260,000 components of 120,000 stellar systems of multiplicity 2 to more than 20, taken from a large variety of published catalogues and databases. We describe the new features in organization of the database, integration of new catalogues and implementation of new possibilities available to users. The development of the BDB index-catalogue, Identification List of Binaries (ILB), is discussed. This star catalogue provides cross-referencing between most popular catalogues of binary stars.

scholarly journals Binary Star Database BDB: New Developments and Applications

2018 ◽  
Author(s):  
Oleg Malkov ◽  
Aleksey Karchevsky ◽  
Pavel Kaygorodov ◽  
Dana Kovaleva ◽  
Nikolay Skvortsov
Keyword(s):  
Binary Stars ◽  
Binary Star ◽  
Stellar Systems ◽  
Database Integration ◽  
New Developments ◽  
Multiple Systems ◽  
Star Catalogue ◽  
Star Database

Binary star DataBase (BDB) is the database of binary/multiple systems of various observational types. BDB contains data on physical and positional parameters of 260,000 components of 120,000 stellar systems of multiplicity 2 to more than 20, taken from a large variety of published catalogues and databases. We describe the new features in organization of the database, integration of new catalogues and implementation of new possibilities available to users. The development of the BDB index-catalogue, Identification List of Binaries, is discussed. This star catalogue provides cross-referencing between most popular catalogues of binary stars. We describe ideas and methods for reliable cross-identification of different entities (systems, pairs, components) in binary and multiple stellar systems.

The New Version of the Binary Star Database (BDB)

2012 ◽  
Vol 21 (3) ◽  
Author(s):  
P. Kaygorodov ◽  
B. Debray ◽  
N. Kolesnikov ◽  
D. Kovaleva ◽  
O. Malkov
Keyword(s):  
Binary Stars ◽  
Binary Star ◽  
General Purpose ◽  
Stellar Systems ◽  
Online Services ◽  
Orbital Parameters ◽  
Star Database ◽  
Pilot Version

AbstractThe Binary star database contains data on about 100 000 stellar systems of multiplicity 2 to 22, taken from a large variety of published catalogues for all types of binary stars: visual, orbital, astrometric, interferometric, spectroscopic, photometric, eclipsing, etc. Positional, kinematic, photometric, spectroscopic, orbital and astrophysical parameters are provided when available. The database can be queried by identifier, coordinates, catalogue and stellar/orbital parameters (including binary type) of objects. Lists of objects can be submitted as well. Also, the database provides links to some other online services, both of general purpose and on binary stars. A pilot version of BDB can be accessed at http://bdb.inasan.ru

BSDB: A New Consistent Designation Scheme for Identifying Objects in Binary and Multiple Stars

2015 ◽  
Vol 24 (2) ◽  
Author(s):  
D. A. Kovaleva ◽  
O. Yu. Malkov ◽  
P. V. Kaygorodov ◽  
A. V. Karchevsky ◽  
N. N. Samus
Keyword(s):  
Binary Star ◽  
Multiple Systems ◽  
Multiple Stars ◽  
Star Database ◽  
Binary And Multiple Stars

AbstractThe new consistent scheme for designation of objects in binary and multiple systems, BSDB, is described. It was developed in the frame of the Binary star DataBase, BDB (

scholarly journals Observations of Binary Protostellar Systems

2004 ◽  
Vol 221 ◽  
pp. 213-222
Author(s):  
Ralf Launhardt
Keyword(s):  
Star Formation ◽  
Binary Stars ◽  
Binary Star ◽  
High Angular Resolution ◽  
Multiple Systems ◽  
Direct Observations ◽  
Theoretical Predictions ◽  
Statistical Studies ◽  
Formation Phase ◽  
Key Questions

A major gap in our understanding of star formation concerns the origins of binary stars although there is growing evidence that most stars form in binary and multiple systems. While some theoretical predictions of fragmentation models are indirectly supported by statistical studies of evolved binary stars at shorter wavelengths, direct observations of the formation phase became only possible with the advance of large millimeter interferometers. Molecular line spectroscopy and dust continuum observations at high angular resolution can address some of the key questions in binary star formation theories. Observing methods and results of recent studies of binary protostellar systems are reviewed in this paper.

scholarly journals Duplicity on the Main Sequence

1984 ◽  
Vol 80 ◽  
pp. 29-39
Author(s):  
T. Herczeg
Keyword(s):  
Binary Stars ◽  
Main Sequence ◽  
Review Paper ◽  
Fundamental Problem ◽  
Binary Star ◽  
Future Research ◽  
Multiple Systems ◽  
Wide Pairs ◽  
Basic Facts

AbstractA review paper or a lecture like the following one, will best serve ‘its’ conference by giving an overview of the basic facts, and an impartial review of current debates, also by trying to point out some apparently crucial questions whose solutions, we hope, will determine the line of future research.Because these stars are essentially unevolved, beyond the topic of multiplicity on the Main Sequence looms the fundamental problem of the formation of binary star systems. Thus we are going to concentrate on the following questions: the fraction of stars that are formed in binary and multiple systems, the distribution of mass ratios for unevolved systems, the role of very wide pairs and the smallest known stellar or substellar masses. We will pay special attention to nearby binary stars. On the other hand, we do not have the space to discuss in any detail the binaries in extragalactic systems, in the upper regions of the HR-diagram; they are practically all evolved systems.

scholarly journals Identification List of Binaries

2016 ◽  
Vol 25 (1) ◽  
Author(s):  
O. Malkov ◽  
A. Karchevsky ◽  
P. Kaygorodov ◽  
D. Kovaleva
Keyword(s):  
Binary Stars ◽  
Multiple Systems ◽  
X Ray ◽  
Star Catalogue

AbstractThe Identification List of Binaries (ILB) is a star catalogue constructed to facilitate cross-referencing between different catalogues of binary stars. As of 2015, it comprises designations for approximately 120 000 double/multiple systems. ILB contains star coordinates and cross-references to the Bayer/Flemsteed, DM (BD/CD/CPD), HD, HIP, ADS, WDS, CCDM, TDSC, GCVS, SBC9, IGR (and some other X-ray catalogues), PSR designations, as well as identifications in the recently developed BSDB system. ILB eventually became a part of the BDB stellar database.

Binary Star Database: Binaries Discovered in Non-Optical Bands

2015 ◽  
Vol 24 (4) ◽  
Author(s):  
Oleg Yu. Malkov ◽  
Solomon B. Tessema ◽  
Alexei Yu. Kniazev
Keyword(s):  
Binary Systems ◽  
Binary Star ◽  
Identification System ◽  
Radio Pulsars ◽  
Multiple Systems ◽  
X Ray ◽  
General Catalogue ◽  
Star Database ◽  
First Time ◽  
X Ray Binaries

AbstractThe Binary star Database (BDB) is the world’s principal database of binary and multiple systems of all observational types. In particular, it should contain data on binaries discovered in non-optical bands, X-ray binaries (XRBs) and radio pulsars in binaries. The goal of the present study was to compile complete lists of such objects.Due to the lack of a unified identification system for XRBs, we had to select them from five principal catalogues of X-ray sources. After cross-identification and positional cross-matching, a general catalogue of 373 XRBs was constructed for the first time. It contains coordinates, indication of photometric and spectroscopic binarity, and extensive cross-identification. In the preparation of the catalogue, a number of XRB classification disagreements were resolved, some catalogued identifiers and coordinates were corrected, and duplicated entries in the original catalogues were found.We have also compiled a general list of 239 radio pulsars in binary systems. The list is supplied with indication of photometric, spectroscopic or X-ray binarity, and with cross-identification data.

Astronomical Data Resources for Binary and Multiple Stars

2015 ◽  
Vol 24 (4) ◽  
pp. 446-452 ◽  
Author(s):  
D. Kovaleva
Keyword(s):  
Binary Stars ◽  
Stellar Population ◽  
Binary Star ◽  
Significant Part ◽  
Basic Data ◽  
Astronomical Data ◽  
Link Type ◽  
Multiple Stars ◽  
Star Database ◽  
Binary And Multiple Stars

AbstractBinary stars form a significant part of stellar population. They are registered and observed by a number of methods. This is the reason for variety of present-day resources of astronomical data dealing with binaries and multiples. The review of observational types of binary stars and of basic data resources for them is presented. The properties of stars within these types and possible relationships between them are discussed. The Binary star DataBase, BDB (http://bdb.inasan.ru), is presented as the resource joining data for all observational types of binaries. The problem of correct cross-identification of objects within binary and multiple stars is being solved in the frame of the Identification List of Binaries (ILB).

scholarly journals The Formation of Binary Stars

2006 ◽  
Vol 2 (S240) ◽  
pp. 337-346
Author(s):  
C.J. Clarke
Keyword(s):  
Binary Stars ◽  
Binary Star ◽  
Vital Role ◽  
Physical Processes ◽  
Multiple Systems ◽  
Star Forming ◽  
Circumstellar Material ◽  
Low Mass ◽  
Body Level ◽  
Hydrodynamical Simulations

AbstractI argue that binary star statistics offer the best observational constraints on current hydrodynamical simulations of star forming clusters. In these simulations, clusters form hierarchically from the bottom up, and dynamical interactions, mediated by the presence of circumstellar material, play a vital role at the lowest (few body) level of the hierarchy. Such a scenario produces a rich array of complex multiple systems whose properties are in many respects consistent with observations. I however highlight two areas of current disagreement: the simulations over-produce low mass single stars and under-produce binaries with low mass ratios. It is currently unclear to what extent these shortcomings reflect numerical issues and to what extent the omission of relevant physical processes. I conclude with a theorist's wish list for observational diagnostics that would most meaningfully constrain future modeling efforts.

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