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A Catalogue of Potentially Bright Close Binary

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A Catalogue of Potentially Bright Close Binary A CATALOGUE OF POTENTIALLY BRIGHT CLOSE BINARY GRAVITATIONAL WAVE SOURCES R. F. Webbink Department of Astronomy University of Illinois Urbana, Illinois 61801 PREFACE This document is a current print-out of the results of a survey, undertaken in the spring of 1985, to identify those known binary stars which might produce significant gravitational wave amplitudes at earth, either dimensionless strain amplitudes exceeding a threshold h = 10"21,or energy fluxes exceeding F = 10"nerg cm"2 s"_. Every effort has been made to be comprehensive in this enterprise. To this end, all real or putative binaries brighter than a certain limiting magnitude (calculated as a function of primary spectral type, orbital period, orbital eccentridty, and ban@ass) are included. All double degenerate binaries and Wolf-Rayet binaries with known or suspected orbital periods have also been included. The catalogue consists of two parts: a listing of objects in ascending order of Right Ascension (Equinox B1950), followed by an index, listing of objects by identification number according to all major stellar catalogues. The object listing is a print-out of the Microsoft EXCEL® spreadsheets on which the catalogue is currently maintained. It should be noted that the use of this spreadsheet program imposes some limitations on the display of entries. Text entries which exceed the cell size may appear in truncated form, or may run into adjacent columns. Greek characters are not available; they are represented here by the first two or three letters of their roman names, the fast letter appearing as a capital or lower-case letter according to whether the capital or lower-case Greek character is represented. Neither superscripts nor subscripts are available; they appear here in normal position and type-face. Thus, for example, the star COOrionis is written psL20ri. The index provides the Right Ascension and Declination of objects sorted by catalogue number. It should be emphasized that this is a working document, and not a final catalogue. A number of internal inconsistencies remain to be resolved, some references are missing or incomplete, and it is likely that errors remain, despite proofreading. Obviously, estimates of many system parameters, especially absolute masses and radii, and distances, have yet to be derived, and many of the entries appearing here will be discarded, revised, or superseded. Please note as well that some of the catalogue entries are almost certainly not binary at all. In order to avoid needless duplication of effort in researching entries, I have adopted the practice never to remove an object from the catalogue once it has been entered, even though any evidence of binarity (or in some cases the very existence of the object) has been thoroughly refuted. These objects are identified in the column labeled Notes at the end of the entry. Every effort has been made to select the best and most reliable data currently available for inclusion here. I recognize that some of my choices may be controversial, but space and time do not permit justifying my selections here. I will of course welcome new input or constructive criticisms of this work. DESCRIPTION CATALOGUE DESCRIPTION Column Description Name Name by which the star is identified in this catalogue. These have been assigned in the following priority:. GCVS - Variable star designation, as it appears in the General Catalogue of Va6able Stars, 4th edition, or in subsequent by name-lists Bayer- Letter designation by constellation in Bayer's Uranometria or Laeallle's CoelumAustrale Stelliferum, as in common usage (Greek letter designations only) Flamsteed - Numerical designation by constellation in Flamsteed's Historia Coelestis Britannica HR - Harvard Revised Photometry number, the identification also used in the Yale Bright Star Catalogue HD - Henry Draper Catalogue number (original catalogue only, without its Extensions) BD - Bonner Durchmusterung number CoD - Cordoba Durchmustemng number (6t_ > -52 °) CPD - Cape Photographic Durchmustenmg number (6t_s < -52 °} Other designations, which ever appears in most common usage RA(1950) Right Ascension for Equinox 1950.0. Where the position reference (Pos Re0 is a precision catalogue, or the star's proper motion is known, the posidon quoted corresponds to Epoch 1950.0. The precision catalogues employed here are, with the exception of the Cp00ft catalogue, all nominally on the FK4 system; no attempt has been made to correct other positions to that system. _(RA) Centennial Proper Motion in Right Ascension for Equinox 1950.0 in 0_01 yr"t. Where a precision catalogue is identified as the position reference (Pos Re0, this value has been adopted or derived from that source. Dec(1950) Declination for Equinox 1950.0. Where the position reference (Pos Ref) is a precision catalogue, or the star's proper motion is known, the position quoted corresponds to Epoch 1950.0. The precision catalogues employed here are, with the exception of the Cp00ft catalogue, all nominally on the FK4 system; no attempt has been made to correct other positions tO that system. #(Dec) Centennial Proper Motion in Declination for Equinox 1950.0 in 0_01 yr "t. Where a precision catalogue is identified as the position reference (Pos Re0, this value has been adopted or derived from that SOurce. Pos Ref Positional Reference. The source of the position quoted in columns A and B. Where possible, they have been drawn or derived from the following precision catalogues, listed in priority order: FK4 - Fourth Fundamental Catalogue (Heidelberg) FK4Sup - Supplement to the Fourth Fundamental Catalogue (Heidelberg) PerT0 - Perth Catalogue for 1970 (Heidelberg) AGK3 - 3rd Astronornische GeseUschafl Katalog (Hamburg) SAC) - Smithsonian Astrophysical Observatory Catalogue (Washington) Cp00ft - Cape Catalogue of Faint Stars for 1900 (Cape Observatory: FK3 system) Where one of the above catalogues is listed in parentheses, the star in question is a member of a very dose visual binary, and its position has been calculated from the catalogued position of the photocenter. Other catalogue sources listed are identified in the BIBLIOGRAPHY at the end of this catalogue. Blank entries indicate, for the most part, that the position source is a study of the particular star in question. Where any of these alternative catalogues appear in parentheses (or an empty pair of parentheses appear), the position has been corrected for proper motion to Epoch 1950.0. Column Description FK4 Fourth Fundamental Catalogue and its Supplement. SRS Southern Reference System (PerTO _). AGK3 3rd Astronondsche Gesell_chafl Catalogue. SAO Sndthsontan Astrophysical Observatory Catalogue. GC General Catalogue of 33342 Stars for the Epoch 1950 (Boss: Carnegie Institution of Washington). ! Galactic latitude. _ b Galactic longitude. Bayer Designation in Bayer's Uranometn'a or Lacallle's Coe/um Australe Stellifemm, as identified and darified in Flamsteed's H/stoda Coe/est/s Britann/ca, the Baily's Genera/Cata/o_e of 8377 Stats (foi- the British Association for the Advancement of Science), and Gould's Unmomefria Argentina (see BIBLIOGRAPHY). Lacaille's designations have been adopted for those southern constellations also appearing in Bayer's atlas. Roman letter designations have been retained, even when obsolete. Parentheses indicate that the constellation boundaries adopted by the IAU now place the star in a different constellation. Flmstd Flamsteed's Htstoria Coelestts Bdtan_. Parentheses indicate that the constellation boundaries adopted by the IAU now place the star in a different constellation. HR Harpard Revised Photometry (Bright Star Catalogue). HD Henry Draper Catalogue or its extensions. BD Bonner Durchmusterung. CoD Cordoba Durchmusterung. CPD Cape Photographic Durchmusterung. Var General Catalogue of Variable Stars, 4th edition, plus subsequent name-lists. Other Miscellaneous catalogue designations. A complete listing of these catalogues can be found in the BIBLIOGRAPHY at the end of this catalogue. For the brightest stars, the classical Arabic/Latin names are are also listed, as are common X-ray source names by constellation. Spl Spectral type ('m the MK system where available) of the spectroscopic primary. Where a portion or all of this assignment appears in parentheses, e.g. K4(IV), the enclosed features have been inferred photometrically, rather than observed directly spectroscopically. Where a spectral type appears in brackets, e.g. [K4IV], it has been assumed. spz Spectral type ('m the MK system where available) of the spectroscopic secondary. Where a portion or all of this assignment appears in parentheses, e.g. K4(IV), the enclosed features have been inferred photometrically, rather than observed directly spectroscopically, g/ten the spectral (ype of the primary quoted in Spl. Where a spectral type appears in brackets, e.g. [K4IV], it has been assumed. Column Description T-JD 2400000 Epoch. If the binary orbit is eccentric and the longitude of periastron is known (see omel), the epoch quoted is periastron; otherwise it is superior conjuction of the spectroscopic primary (see Spl). No attempt has been made to correct published epochs to barycentric (or heliocentric) time when these corrections have not already been included. P Sidereal orbital period, in days. A number of cataclysmic variables for which orbital periods are not known are nevertheless bright enough to merit inclusion in this catalogue. In some of these cases, an orbital period has been inferred from correlations established with other features of these systems,
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