Polarization of Variable Stars

The changes in stellar polarization with time were first discovered in 1958 by GRIGORYAN (1958) for the red supergiant µ Cephei. In subsequent year BEHR (1959) gave a hint in a footnote to his catalogue that the emission-line B-type star α Cas seems to have variable polarization. However, several years had to pass before these discoveries were confirmed and the changes in polarization with time for the red giants and supergiants and for the emission-line B-type stars were firmly established, first by the observations made by SHAKHOVSKOJ (1963, 1964) and then by COYNE, GEHRELS (1967) and the writer (SERKOWSKI 1966, 1968). The changes in polarization with time were also found for the RV Tauri and T Tauri stars, R Coronae Borealis stars, novae, Wolf-Rayet stars, and white dwarfs. The rapid changes in polarization with time indicate that the polarization is not produced in the interstellar medium but in the vicinity of a star; such polarization is called intrinsic.

[1]  J. Angel,et al.  DISCOVERY OF PERIODIC VARIATIONS IN THE CIRCULAR POLARIZATION OF THE WHITE DWARF G195--19. , 1971 .

[2]  J. Angel,et al.  Discovery of circular polarization in the white dwarf G99-37 , 1971 .

[3]  F. Forbes.  The infrared polarization of eta Carinae and VY Canis Majoris , 1971 .

[4]  N. Woolf,et al.  Mass Loss from M Stars , 1971 .

[5]  J M Beckers,et al.  Achromatic linear retarders. , 1971, Applied optics.

[6]  M. Hanner.  Light from reflection nebulae. IV - Scattering by silicate grains , 1971 .

[7]  K. M. Merrill,et al.  Observations of infrared radiation from cool stars , 1971 .

[8]  B. Zellner.  Wavelength dependence of polarization. XXIII. Dust grains in novae. , 1971 .

[9]  G. Wallerstein.  On the Infrared Excess of W Cephei and Similar Stars , 1971 .

[10]  G. Neugebauer,et al.  Infrared Sources of Radiation , 1971 .

[11]  A. Kruszewski.  WAVELENGTH DEPENDENCE OF POLARIZATION. XXIV. INFRARED OBJECTS. , 1971 .

[12]  H. M. Dyck,et al.  INTRINSIC POLARIZATION IN K AND M GIANTS AND SUPERGIANTS. , 1971 .

[13]  H. M. Dyck,et al.  Polarimetry of red and infrared stars at 1 to 4 microns. , 1971 .

[14]  H. M. Dyck,et al.  Visual intrinsic polarization and infrared excess of cool stars. , 1971 .

[15]  N. Morrison,et al.  WAVELENGTH DEPENDENCE OF POLARIZATION. XXII. OBSERVATIONS OF NOVAE. , 1971 .

[16]  J. Bahng.  Rapid Variations in the Spectrum of Zeta Tauri , 1971 .

[17]  H. M. Dyck,et al.  Multicolor polarimetry of some Mira variables. , 1971 .

[18]  K. Swamy.  Circumstellar dust model for infrared stars , 1970 .

[19]  James C. Kemp,et al.  Discovery of Circularly Polarized Light from a White Dwarf , 1970 .

[20]  F. Low,et al.  Infrared emission of Novae , 1970 .

[21]  G. Collins.  INTRINSIC POLARIZATION IN NONGRAY ATMOSPHERES. , 1970 .

[22]  J. C. Kemp,et al.  LARGE INFRARED CIRCULAR POLARIZATION OF Grw + 70$sup 0$8247. , 1970 .

[23]  B. Zellner.  WAVELENGTH DEPENDENCE OF POLARIZATION. XXI. R MONOCEROTIS. , 1970 .

[24]  J. Westphal,et al.  Optical Polarization and Intensity of the Pulsar in the Crab Nebula , 1970 .

[25]  N. Woolf,et al.  R V Tauri Stars: a New Class of Infrared Object , 1970 .

[26]  B. Zellner,et al.  POLARIZATION OF IRC + 10216. , 1970 .

[27]  J. Angel,et al.  FURTHER POLARIZATION STUDIES OF Grw + 70$sup 0$ 8247 AND OTHER WHITE DWARFS. , 1970 .

[28]  J. Harrington.  Polarization of radiation from stellar atmospheres. The grey case , 1970 .

[29]  T. Gehrels,et al.  Optical Polarization of the Crab Nebula Pulsar , 1970, Nature.

[30]  F. Gillett,et al.  A possible identification of interstellar silicate absorption in the infrared spectrum of 119 Tauri. , 1969 .

[31]  K. Serkowski,et al.  CHANGES IN POLARIZATION OF THE R CORONAE BOREALIS STAR RY SAGITTARII. , 1969 .

[32]  S. Shawl.  STRONG OPTICAL POLARIZATION OBSERVED IN VY CANIS MAJORIS. , 1969 .

[33]  K. Serkowski.  CHANGES IN POLARIZATION OF T TAURI STARS. , 1969 .

[34]  N. Woolf.  Circumstellar infrared emission from cool stars. , 1969 .

[35]  T. Gehrels,et al.  Wavelength dependence of polarization. XII. Red variables. , 1968 .

[36]  G. Coyne,et al.  Wavelength dependence of polarization. XI. MU Cephei. , 1968 .

[37]  T. Gehrels,et al.  Wavelength dependence of polarization. X. Interstellar polarization. , 1967 .

[38]  I. Appenzeller,et al.  True polarization curves for Beta Lyrae. , 1967 .

[39]  I. Appenzeller.  A NEW POLARIMETER FOR FAINT ASTRONOMICAL OBJECTS , 1967 .

[40]  K. Serkowski,et al.  Changes in Polarization, Light and Colour during the Outburst Stage of the Recurrent Nova T Pyxidis , 1967, Nature.

[41]  N. Visvanathan.  POLARIZATION IN eta CARINAE. , 1967 .

[42]  Y. Glagolevskii,et al.  Analysis of the hydrogen lines of the peculiar stars α2 CVn and γ Lyr , 1967 .

[43]  R. C. Cameron,et al.  The magnetic and related stars , 1967 .

[44]  David A. Williams,et al.  Comments on the Intrinsic Polarization of Mira Variables , 1966 .

[45]  K. Serkowski.  Intrinsic Polarization of the Mira Variables , 1966 .

[46]  W. A. Hiltner,et al.  Variable polarization in V444 Cygni. , 1966 .

[47]  R. Hall.  POLARIZATION AND COLOR MEASURES OF NGC 2261 , 1965 .

[48]  A. Thackeray.  Polarization of eta Carinae , 1956 .

[49]  W. A. Hiltner.  On the Presence of Polarization in the Continuous Radiation of Early-Type Stars. , 1947 .

[50]  H. W. Babcock.  Zeeman Effect in Stellar Spectra. , 1947 .