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                         The Preliminary Version of

              Bibliographical Catalogue of Stellar Polarization


                            M. L. Belous (1, 2)



        1) Institute of Astronomy of the Russian Academy of Sciences,
               48 Pyatnitskaya st., Moscow 109017, Russia

        2) State Astronomical Institute, Univerity of Moscow, Russia



                                Moscow, 1995


                                 ABSTRACT

             Bibliographical Catalogue of Stellar Polarization will hold 
	all the published data about stellar polarization observations 
	since 1977 up to now. The preliminary version of the Catalogue
        presents its format and covers the period from 1977 to 1981.
        Due to bibliographic nature of the Catalogue, the main
        information it contains is not minute numerical data but basic
        polarization characteristics, original papers references and
        authors' conclusions about object polarization nature and
        behavior.


                             I. INTRODUCTION

             The preliminary version of the Bibliographic Catalogue
	of Stellar Polarization (BCSP) contains data about
        polarization measurements of more than 1600 galactic objects
        published in 1977 - 1981. All the information included in the
        Catalogue has been taken from original papers published during
        this period. The main goal of the Catalogue is to present
        necessary bibliography to explorers studying a certain object
        and to give them some primary polarization data concerning with
        it.


                        II. THE CATALOGUE STRUCTURE

             The machine readable version of the Catalogue consists
        of the following files:

      +-------------+-------------+----------------+--------------------+
      :     NAME    :RECORD LENGTH: RECORDS NUMBER :    DESCRIPTION     :
      +-------------+-------------+----------------+--------------------+
      :    bcsp.doc :      76     :       473      : documentation file :
      :    refs.dat :      96     :       193      :   bibliography 1   :
      : authors.bib :      96     :       193      :   bibliography 2   :
      :    bcsp.dat :     139     :      1637      :   main data file   :
      : nocoord.dat :     139     :        22      : supplementary data :
      +-------------+-------------+----------------+--------------------+


                   III. DETAILED CATALOGUE FILES DESCRIPTION

              BCSP.DOC   This file.
              REFS.DAT   Reference file (see sec. IX) sorted by A&AA
                         numbers.
           AUTHORS.BIB   Same as the previous, but the records are
                         sorted corresponding to authors' names.
              BCSP.DAT   Contains numerical data. The information
                         is presented in the following form:

     +--------+----------+-------------------------------------------------+
     : COLUMN : POSITION :                    CONTENTS                     :
     +--------+----------+-------------------------------------------------+
     :    1   :  1 - 14  :        Object identifier (see sec. IV)          :
     :    2   : 16 - 22  :            R. A. (2000.0): HH MM.m              :
     :    3   : 24 - 29  :            Decl. (2000.0): *DD MM               :
     :    4   : 31 - 42  :                  Spectral type                  :
     :        :          :   (also see notes on coordinates and spectra    :
     :        :          :            determination in sec. IV)            :
     :    5   : 44 - 52  :   The degree of polarization (p) (see sec. V)   :
     :    6   : 54 - 81  :  Information about the wavelengths used during  :
     :        :          :           observations (see sec. VI)            :
     :    7   : 83 - 87  :   Characteristics of polarization nature and    :
     :        :          : behavior given by author(s) in the original     :
     :        :          :             paper (see sec. VII)                :
     :    8   : 89 - 102 :   Data on observational period (see sec. VIII)  :
     :    9   :104 - 113 :       Reference (A&AA number; see sec. IX)      :
     :   10   :115 - 124 :             Object type (see sec. X)            :
     :   11   :126 - 139 :     Another object identifier (see sec. IV)     :
     +--------+----------+-------------------------------------------------+

           NOCOORD.DAT   Contains objects which coordinates have been
                         unknown up to the date of this file creation
                         (see sec. IV).


               IV. OBJECT IDENTIFIERS, COORDINATES AND SPECTRA

             Object identifiers are mostly taken from the articles in
        which these objects are described. Stellar coordinates (Right
        Ascension and Declination 2000.0) and spectral type were
        directly included into the Catalogue, if they were in the
        article. But sometimes authors do not mention coordinates of
        well-known (or well-known to them) objects. So, it was
        necessary to interrogate Simbad database for these important
        data. The same was made if there were only 1950.0 coordinates
        in the original paper. It was possible to deal with most of the
        Catalogue objects like this.
             Several cases were more intricate. Certainly, Simbad
        database does not contain all the astronomical catalogues, so
        from time to time there appears an object unknown to Simbad in
        original paper. Then some attempts were made to find more
        cross-identifications. E. g., Simbad database "knows" white
        dwarf LP 131-66, but does not know its other name, WD 1247+551.
        In such cases identifiers known to Simbad are given in the
        Catalogue. The number of these objects is not more than one
        hundred.
             But that is not the last difficulty. There are some
        catalogues (e. g., NIPSS - Near Infrared Photographic Sky
        Survey) that are not completely incorporated in Simbad
        database. The coordinates of these objects were taken from
        literature (from where it was possible) and recalculated to the
        equinox of 2000.0. Only one or two dozens of such stars present
        in the Catalogue.
             In spite of all the efforts made there were several cases
        in which no source could be found to determine stellar
        coordinates. These objects are collected in file NOCOORD.DAT.
        Further attempts would be applied to get necessary data for
        them.

             If an object spectrum was not presented in the original
        paper, it was taken from Simbad (if it existed there, of
        course). Sometimes spectral classifications of an object from
        Simbad database and from the paper were different. Then the
        Simbad data were preferred except the cases when these two
        classifications were not too diverse.

             Please pay attention to the greece letters designations
        used in the Catalogue. They are different a bit from the
        standard. There are no two-letter abbreviations here, and each
        greece letter is presented with three latin ones:

         +--------------+-------------+--------------+--------------+
         : Alpha    ALP : Eta     ETA : Nu       NHU : Tau      TAU :
         : Beta     BET : Theta   THE : Xi       KSI : Upsilon  UPS :
         : Gamma    GAM : Iota    IOT : Omicron  OMI : Phi      PHI :
         : Delta    DEL : Kappa   KAP : Pi       PIE : Chi      CHI :
         : Epsilon  EPS : Lambda  LAM : Rho      RHO : Psi      PSI :
         : Zeta     ZET : Mu      MHU : Sigma    SIG : Omega    OME :
         +--------------+-------------+--------------+--------------+

             Object identifiers are included in the catalogue twice:
        in positions 1 - 14 (column 1) and 126 - 139 (column 11).
        Everywhere it is possible column 1 contains preferably HD star
        designations.


                       V. THE DEGREE OF POLARIZATION

             Degree of linear polarization (p) was determined by
        authors during observations and was published in their papers.
        Sometimes authors presented Stokes parameters instead of
        polarization degree and position angle. In such cases it was
        easy to calculate polarization from these data.
             All the values in this column are given in %%. Their
        decimal points are in position 47. The quantity of digits after
        decimal point is the same as in paper and is not reduced to a
        single format.
             This column (5) contains the degree of linear
        polarization only. If you want to know whether circular
        polarization was measured, please pay attention to flag in
        position 83 (see sec. VII). But in some papers only circular
        polarization measurements were presented. Then there is a
        degree of circular polarization in this column with its sign in
        position 44. For linear polarization the latter position
        is blank.
             A large amount of polarization measurements described in
        this Catalogue was multiwavelength. Nevertheless, column 5
        contains only single number. This number represents the most
        high polarization level measured by authors through all the
        observational period and through all the wavelengths. If the
        polarization behavior obeys the Serkowsky law (see sec. VII
        about it; pay attention at flag in position 85), it is not
        difficult to get the wavelength on which such a degree of
        polarization was observed. If not, explorers have more reasons
        to look through the original paper.


                  VI. WAVELENGTHS USED DURING OBSERVATIONS

             Column 6 contains the data about wavelengths used during
        objects observations. This column consists of many flags and
        numbers that do not present in every line. This is the list:

          +----------+---------------------------------------------+
          : POSITION :                 CONTAINS                    :
          +----------+---------------------------------------------+
          :    54    :    #, if there was an unfiltered object     :
          :          :      measurement, and blank otherwise       :
          :  55 - 61 :   Names of Johnson-Morgan system filters    :
          :          :   used during observations, and blank, if   :
          :          :        these filters were not used          :
          :  63 - 64 :  Number of other (medium- and narrowband)   :
          :          :   used filters. If this number was more     :
          :          :  than 20, there is '>' sign in position 64  :
          :  66 - 67 :   The units used to describe medium- and    :
          :          :   narrowband filters:                       :
          :          :             m   meters                      :
          :          :            cm   centimeters                 :
          :          :            mm   millimeters                 :
          :          :            um   micrometers                 :
          :          :            nm   nanometers                  :
          :          :             A   angstroms                   :
          :          :            GH   gigahertzs                  :
          :          :            MH   megahertzs                  :
          :          :            kV   kiloelectronvolts           :
          :  69 - 74 :  One of the medium- or narrowband filters   :
          :          : bordering the wavelengths interval measured :
          :          :   by authors (in units described before)    :
          :  76 - 81 :        The other bordering filter           :
          +----------+---------------------------------------------+

             Example:
                      #BR       5 um 1.6    2.2
             means that this star was measured unfiltered (#), then two
        Johnson-Morgan system filters (B and R) were used, and besides
        there were measurements in five bands between 1.6 and 2.2
        micrometers (um).


          VII. REMARKS ON OBJECT POLARIZATION BEHAVIOR AND NATURE

             After observations, authors often make efforts to
        investigate the nature of its polarization basing on the
        behavior of the object during the observational period. If
        such an information presents in original paper, it is
        incorporated in the Catalogue's column 7 using the following
        format:

       +----------+--------------------------------------------------+
       : POSITION : FLAG3             EXPLANATION                    :
       +----------+--------------------------------------------------+
       :    83    :   circular polarization measurements of the      :
       :          :            corresponding object...               :
       :          :--------------------------------------------------+
       :          :  0  : ...were not carried out;                   :
       :          :  1  : ...were carried out and the degree of      :
       :          :     : circular polarization presents in the      :
       :          :     : paper;                                     :
       :          :  2  : ...were carried out but the circular       :
       :          :     : polarization was not detected;             :
       :          :  3  : ...did not allow to make clear conclusion; :
       :          :  4  : ...present in the paper, but the author do :
       :          :     : not make any conclusion                    :
       +----------+--------------------------------------------------+
       :    84    :      time variability of observing object        :
       :          :                polarization...                   :
       :          +--------------------------------------------------+
       :          :  0  : ...was not explored;                       :
       :          :  1  : ...was explored but was not detected;      :
       :          :  2  : ...was detected;                           :
       :          :  3  : ...is not clear; different interpretations :
       :          :     : are possible;                              :
       :          :  4  : ...was explored and all the data are in the:
       :          :     : paper, but the author do not make any      :
       :          :     : conclusion;                                :
       :          :  5  : ...was detected during a part of the       :
       :          :     : observational period and definitely was not:
       :          :     : detected during the other one              :
       +----------+--------------------------------------------------+
       :    85    : wavelength dependence of linear polarization...  :
       :          +--------------------------------------------------+
       :          :  0  : ...was not explored;                       :
       :          :  1  : ...was found to be standard (Serkowsky     :
       :          :     : law);                                      :
       :          :  2  : ...was unusual;                            :
       :          :  3  : ...was not clear enough to allow the author:
       :          :     : to make any conclusion;                    :
       :          :  4  : ...was explored and all the data are in the:
       :          :     : paper, but the author do not make any      :
       :          :     : conclusion;                                :
       :          :  5  : ...was found to fit another law (not       :
       :          :     : Serkowsky);                                :
       :          :  6  : ...was found to fit Serkowsky law during a :
       :          :     : part of the observational period and       :
       :          :     : definitely not to fit it during the other  :
       :          :     : one;                                       :
       :          :  7  : ...was found to be typical for the class of:
       :          :     : objects the exploring star belongs to      :
       +----------+--------------------------------------------------+
       :    86    :   spatial distribution of polarization in the    :
       :          :           region  of the object...               :
       :          +--------------------------------------------------+
       :          :  0  : ...was not explored;                       :
       :          :  1  : ...was explored and was published as a     :
       :          :     : map without numerical data;                :
       :          :  2  : ...was explored and was published as a     :
       :          :     : map with numerical data;                   :
       :          :  3  : ...was explored, and besides the author    :
       :          :     : investigated the dependence between        :
       :          :     : polarizations of the object and its        :
       :          :     : environment                                :
       +----------+--------------------------------------------------+
       :    87    : the author's conclusion of the polarization      :
       :          :                 nature...                        :
       :          +--------------------------------------------------+
       :          :  0  : ...is absent;                              :
       :          :  1  : ...is that the polarization nature is      :
       :          :     : interstellar;                              :
       :          :  2  : ...is that a part of object polarization is:
       :          :     : intrinsic;                                 :
       :          :  3  : ...is that he hardly can say anything about:
       :          :     : the polarization nature of the object;     :
       :          :  4  : ...is that during a part of the            :
       :          :     : observational period the object            :
       :          :     : polarization was definitely of interstellar:
       :          :     : origin, but during the other one some      :
       :          :     : intrinsic component was detected           :
       +----------+--------------------------------------------------+


                  VIII. OBSERVATIONAL PERIOD DESCRIPTION

             These data taken from the original paper are written in
        the following form. There is the date when observations began
        in positions 92 - 102: year, month abbreviation and day (the
        latter two present if they are given in the paper). Flag in
        position 90 allows to determine the observational period:

         +--------+-----------------------------------------------+
         :  FLAG  :                  PERIOD...                    :
         +--------+-----------------------------------------------+
         :    0   :    ...is not specified by the author (the     :
         :        :     year can be taken from the paper only);   :
         :    1   :    ...is not more than 24 hours;              :
         :    2   :    ...is between a day and a month;           :
         :    3   :    ...is between a month and a year;          :
         :    4   :    ...is more than a year                     :
         +--------+-----------------------------------------------+

             Sometimes observations were carried out nonsystematically
        during a long period but in a form of several shorter periods.
        In such a case there is an asterisk (*) in position 89.
           Example:
                             *1 1977 AUG 17

             means that there were several observational periods (each
        not more than a day) since August 17, 1977.
             For single set of observations, position 89 is
        blank.


                            IX. OBJECT REFERENCES

             All the object reference notes are given in the form of
        Astronomy & Astrophysics Abstracts (A&AA): volume number,
        section number, article number (positions 104 - 113), separated
        by dots. The references themselves are collected in files
        REFS.DAT and AUTHORS.BIB; they are sorted along with AAA
        numbers in the former file and along with authors' names in the
        latter one. Journal designations are in the following table:

       +--------+------------------------------------------------------+
       : AA     : Astronomy and Astrophysics                           :
       : AAS    : Astronomy and Astrophysics Supplement Series         :
       : Af     : Astrofizika                                          :
       : AJ     : Astronomical Journal                                 :
       : AJP    : Australian Journal of Physics                        :
       : AiA    : Astrometrija i Astrofizika                           :
       : ApJ    : Astrophysical Journal                                :
       : ApJS   : Astrophysical Journal Supplement Series              :
       : ARAA   : Annual Review of Astronomy and Astrophysics          :
       : ASS    : Astrophysics & Space Science                         :
       : AT     : Astronomicheskij Tsirkulyar                          :
       : ATAOS  : Annual Tokyo Astron. Obser., Second series           :
       : AZ     : Astronomicheskij Zhurnal                             :
       : A&AA   : Astronomy and Astrophysics Abstracts                 :
       : BAAO   : Bull. Abastumanskoj Astrofizicheskoj Obs.            :
       : BAAS   : Bull. American Astron. Society                       :
       : BAC    : Bull. Astron. Inst. Czechosl.                        :
       : IBVS   : Inf. Bull. Variable Stars                            :
       : IKAO   : Izvestija Krymskoj Astrofizicheskoj Observatorii     :
       : JRASC  : Journal of the Royal Astron. Soc. of Canada          :
       : MSAI   : Memorie della Societa Astr. Italiana                 :
       : MSAIN  : Memorie della Societa Astr. Italiana, Nuova Seria    :
       : MNRAS  : Monthly Notices of the Royal Astr. Soc.              :
       : MNASSA : Monthly Notices of the Astron. Soc. of South. Africa :
       : MAG    : Mitt. Astron. Ges.                                   :
       : NI     : Nauchnye Informatsii                                 :
       : PASJ   : Publ. Astron. Soc. Japan                             :
       : PASP   : Publ. Astron. Soc. Pacific                           :
       : PAZ    : Pis'ma v Astronomicheskij Zhurnal                    :
       : PDAUB  : Publ. Dep. Astron. Univ. Beograd, Fac. Sci.          :
       : POAB   : Publ. Obs. Astron. Beograd                           :
       : PZ     : Peremennye Zvezdy                                    :
       : ROBGC  : Royal Obs. Bull. Greenwich-Cape                      :
       : SBO    : Soobshcheniya Byurakanskoj Observatorii              :
       : TLO    : Trudy Leningradskoj Astronomicheskoj Observatorii    :
       : VLGU   : Vestnik Leningradskogo Gosudarstvennogo Universiteta :
       +--------+------------------------------------------------------+


                           X. OBJECT TYPES CODING

             As it follows from the Catalogue's title, it contains
        stars only. So there are no other interesting objects such as
        Herbig-Haro ones, molecular clouds and so on in it. Several
        objects of unknown nature are also included in the Catalogue
        because they possibly can be stars. There are certain types
        exploring star can belong to in the Catalogue and they are
        placed in positions 115 - 124:

        +----+---------------------+-------------------------------+
        : AM : AM Her stars        : NS : Stars in nebulae         :
        : AP : Ap stars            :  O : O-type stars             :
        : BI : Binaries            : PM : Pre-MS stars             :
        : BC : Beta Cephei stars   : PS : Protostellar objects     :
        : BE : Be stars            : PU : Pulsars                  :
        : BN : BN-objects          : RC : R CrB stars              :
        : CB : Close binaries      : RS : RS CVn variables         :
        : CS : Carbon stars        : SG : Supergiants              :
        : EB : Eclipsing binaries  : SH : Shell stars              :
        : EL : Emission-line stars : SN : Supernovae               :
        : FL : Flare objects       : SR : Supernovae remnants      :
        :  G : Giants              : SS : Stars in stellar systems :
        : IR : Infrared objects    : SV : Semiregular variables    :
        : MA : Maser sources       : SY : Symbiotic stars          :
        : MG : Magnetic stars      :  T : T Tauri stars            :
        : MI : Mira variables      : UG : U Geminorum stars        :
        : MV : Magnetic variables  :  V : Variables                :
        :  N : Novae               : WD : White dwarfs             :
        : NB : Nearby stars        : WR : Wolf-Rayet stars         :
        : NL : Nova-like objects   :  X : X-ray sources            :
        +----+---------------------+-------------------------------+


                              XI. CONCLUSION

             Bibliographical Catalogue of Stellar Polarization
        (preliminary version) presents data about polarimetric
        measurements of more than 1600 stars during the period of 1977
        - 1980 through all the electromagnetic spectrum from X- to
        radio wavelengths published in astronomical literature. The main
        goal of the Catalogue is to inform explorers about polarimetric
        measurements of objects they are interested in and to quote
        necessary references. So there are not many numerical data in
        the Catalogue. For example, there are no position angles of
        polarization data in it. But the information containing in
        several flags enclosed to each object reference allows to find
        out whether definite paper contains data necessary to the
        explorers' research.
             This work is the preliminary publication of the Catalogue
        only. The final version will contain data about polarization
        measurements from 1977 up to date in the same form.


                            XII. ACKNOWLEDGEMENTS

             I wish to thank Dr. O. Yu. Malkov for his kind support
        and gentle supervising in this research.
             I thank Prof. C. Jaschek, Prof. A. Boyarchuk, Dr. J.
        Krautter and Dr. H. Schwarz for their valuable advices on
        the Catalogue's content and structure.
             I am also grateful to Dr. M. E. Prokhorov for his aid in
        several pulsars identifications and to Dr. F. Ochsenbein for
        his helpful advices in Simbad usage.
             This research has made use of the Simbad database,
        operated at CDS, Strasbourg, France.


© UDS/CNRS

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