Plans for a New Edition of the Bright Star Catalogue

1977 ◽  
pp. 151-151
Author(s):  
Dorrit Hoffleit ◽  
Carlos Jaschek
Keyword(s):  
Bright Star ◽  
Star Catalogue

scholarly journals The number of Be stars compared with the number of B stars, taking into account the specific physical characteristics of Be stars

1994 ◽  
Vol 162 ◽  
pp. 356-357
Author(s):  
D. Briot ◽  
J. Zorec
Keyword(s):  
Spectral Type ◽  
Bright Star ◽  
Physical Parameters ◽  
Emission Characteristics ◽  
Be Stars ◽  
Constant Mass ◽  
B Stars ◽  
The Past ◽  
Star Catalogue

It is very important for the understanding of the Be phenomenon, and particularly for locating a possible Be phase in the evolutionary track of B stars, to accurately determine the proportion of Be stars among all B stars. This type of study was already made several times in the past. Results obtained generally show a maximum Be frequency around spectral type B2 then a decrease towards late spectral types. Actually Be stars do not have the same characteristics as “normal” B stars and we have to take this into account in the determination of the ratio : number of Be stars / number of B stars. We use the Bright Star Catalogue (Hoffleit & Jaschek 1982) and the Supplement to the Bright Star Catalogue (Hoffleit, Saladyga & Wlasuk 1983) containing stars V= 7.10 and brighter. This study needed to be made separately for the different spectral types because:- Physical parameters of B stars are very different from B0 to B9;- Emission characteristics of Be stars vary very much, with a decrease from B0e to B9e.We successively consider three effects which can influence the frequency of Be stars:- The over-luminosity of Be stars as compared with B stars;- Spectral type changes during constant mass evolution;- Spectral type changes due to the fast rotation of Be stars.

scholarly journals A Catalogue of Nearby Wide Binary and Multiple Stars

1992 ◽  
Vol 135 ◽  
pp. 299-299
Author(s):  
A. Poveda ◽  
M.A. Herrera ◽  
C. Allen ◽  
G. Cordero ◽  
C. Lavalley
Keyword(s):  
Dynamical Evolution ◽  
Bright Star ◽  
Wide Binary ◽  
Multiple Systems ◽  
Star Catalogue ◽  
Multiple Stars ◽  
Nearby Stars ◽  
Binary And Multiple Stars

AbstractNo modern catalogue of wide binary and multiple systems (WBMS) exists for the region of the solar vicinity (stars nearer than ~22 pc), that include updated information on their membership to moving clusters and an age classification. With the aim of filling this gap, and also because of its importance for investigating the dynamical evolution of double and multiple systems, we have compiled a WBMS list extracted from the catalogues of nearby stars of Gliese (1969, also Gliese & Jahreiss 1979), as well as Luyten’s NLTT (Luyten 1979–1980, Luyten & Hughes 1980, see also Warren et al. 1989), the Bright Star Catalogue (Hoffleit 1982), the catalogue of Woolley et al. (1970) and other sources.By comparing the transverse velocities of WBM systems with those expected for members of the Hyades and Sirius Superclusters, membership of some WBMS to them has been established. We have classified as probably young systems (PYS) those with one component satisfying at least one of various criteria of youth. A system that is not a PYS is classified as probably old (POS).The catalogue contains 385 binaries and 85 systems of higher multiplicity. Out of these, 129 binaries are PYS and 256 are POS, while 32 multiples are PYS and 53 are POS.

scholarly journals β Canis Majoris Stars in the (β, [c1]) Plane

1974 ◽  
Vol 59 ◽  
pp. 69-71
Author(s):  
R. R. Shobbrook
Keyword(s):  
Bright Star ◽  
Instability Strip ◽  
Star Catalogue

Recent publications have discussed the existence of stable B stars in the β CMa instability strip of the (β, Q) plane (Lesh and Aizenman, 1973) and the (log g, θe) and (Mbol, log Te) planes (Watson, 1972). The new lists of Strömgren uvbyβ photometry published by Crawford et al. (1970, 1971a, 1971b) for most of the B stars in the Bright Star Catalogue suggested that one might determine quite precisely the proportion of stable B stars (that is, stars not known as β CMa variables) in a luminosity/colour plot in the form of the β index against [c1] = c1 −0.2 (b – y).

scholarly journals Infrared and radio excesses of late-type stars

1987 ◽  
Vol 122 ◽  
pp. 379-380
Author(s):  
C. J. Skinner
Keyword(s):  
Bright Star ◽  
Late Type ◽  
Dust Shell ◽  
Low Resolution ◽  
Clear Trend ◽  
Dust Shells ◽  
Star Catalogue ◽  
Cool Stars ◽  
Almost All

The IRAS catalogues have been searched for cool (G,K,M) giant and supergiant stars to investigate the occurrence of circumstellar (C/S)silicate dust, revealed by its emission features at 9.7 and 18μm. Low Resolution Spectrograph (LRS) spectra covering the 7-23μm range were used, plus the 60 and 100μm photometric points. M Supergiants were found in White Wing (1978), other stars by correlating the Bright Star Catalogue with the LRS catalogue: this discriminated against very cool stars reddened by dust; however i t can be seen in Table I that there is a clear trend for cooler and more luminous stars to have a dust shell. M Supergiants almost all have dust shells, whilst only the cooler M bright-giants and giants do. Of the G and K stars, only a very few of the Supergiants have dust shells. The sili cate features fell into two categories:

scholarly journals Plans for A New Edition of the Bright Star Catalogue

1977 ◽  
Vol 35 ◽  
pp. 151-151
Author(s):  
Dorrit Hoffleit ◽  
Carlos Jaschek
Keyword(s):  
Double Star ◽  
Spectroscopic Binaries ◽  
Bright Star ◽  
Proper Motions ◽  
The Third ◽  
Star Catalogue ◽  
Naval Observatory ◽  
General Catalogue ◽  
The Press ◽  
The U.S

Almost any star catalogue becomes obsolescent as soon as it comes off the press. It is now twelve years since the third edition of the Yale Bright Star Catalogue was published in 1964. In the intervening years numerous important new results have appeared, notably the Jaschek et al Catalogue of MK Spectral Classes, the Lick Double Star Catalogue, the U.S. Naval Observatory Catalogue of UBV Magnitudes, the Abt and Biggs Bibliography of Radial Velocities, the Third Edition and three Supplements of the General Catalogue of Variahle Stars, the SAO Catalogue with proper motions reduced to the FK4 system, several new lists of spectroscopic binaries, and a great many shorter compilations. Consequently well in excess of 20,000 entries in the third edition of the Bright Star Catalogue need up-dating.

Kinematic modeling of the Galaxy. I - The Yale Bright Star Catalogue

1989 ◽  
Vol 339 ◽  
pp. 106 ◽  
Author(s):  
Kavan U. Ratnatunga ◽  
John N. Bahcall ◽  
Stefano Casertano
Keyword(s):  
Bright Star ◽  
Kinematic Modeling ◽  
Star Catalogue ◽  
The Galaxy

Search for wide binaries in the Yale Bright Star Catalogue

1988 ◽  
Vol 329 ◽  
pp. 253 ◽  
Author(s):  
Martin D. Weinberg ◽  
Ira Wasserman
Keyword(s):  
Bright Star ◽  
Star Catalogue

Current Programs of Local Galactic Structure and Evolution

1984 ◽  
Vol 88 ◽  
pp. 171-176
Author(s):  
J. Andersen ◽  
B. Nordström
Keyword(s):  
Radial Velocity ◽  
Velocity Dispersion ◽  
Progress Report ◽  
Radial Velocities ◽  
Bright Star ◽  
Star Catalogue ◽  
Metal Abundance ◽  
F Stars ◽  
Near Future

AbstractWe present a progress report on some current radial-velocity observing programs aiming to provide complete data for selected samples of stars covering the whole sky. The velocities are based on ESO coudé spectra as well as CORAVEL observations obtained in both hemispheres. As a first step, the Bright Star Catalogue has been completed in radial velocities ( ~1500 stars or ~l/3 of the southern BS stars). Currently, we are approaching completion of some 4000 dwarf F stars from Olsen’s (1983) uvbyß photometric survey. The data will be used to study the velocity dispersion of these stars as a function of age and metal abundance from a kinematically unbiased sample. They will also provide a basis for an improved determination of Kz. Extension of the program to the G dwarfs is planned for the near future.

scholarly journals Statistics of CP Stars in a Magnitude-Limited Sample: The Bright Star Catalogue

1993 ◽  
Vol 138 ◽  
pp. 629-633 ◽  
Author(s):  
H. Schneider
Keyword(s):  
Incomplete Data ◽  
Main Sequence ◽  
Open Clusters ◽  
Bright Star ◽  
Limited Sample ◽  
The Past ◽  
Star Catalogue ◽  
General Catalogue ◽  
The Moment ◽  
Ap Stars

AbstractIn the past several authors investigated the incidence of CP Stars among field stars of the upper main sequence, e.g. Jaschek&Jascheck (1967), Wolff (1968), Abt (1979), or in open clusters e.g. Young&Martin (1973), Hartoog (1976), North&Cramer (1981). But the published values seem not to be very precise or universal because of the use of incomplete data bases like Osawa’s list (1965) or the old version of the Bright Star Catalogue or the concentration on selected samples e.g. open clusters. Only Smith (1973) gave realistic values in the case of CP1 stars.In the meantime two decades passed and many new observations were obtained. In 1982 a new version of the Bright Star Catalogue with better spectral classifications was issued and a supplement to the BS catalogue was published (1983). Furthermore, Renson and co-workers presented 1991 their General Catalogue of Am and Ap Stars (in the following abbreviated to GCAAS). Now the moment has come to establish new and hopefully more precise values of the incidence of CP Stars using the new version of the Bright Star Catalogue and its supplement as the data base.

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