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J/AJ/110/268       Red and infrared polarimetry in galactic plane (Creese+ 1995)
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Red and infrared polarimetry of highly reddened stars in the galactic plane.
    Creese M., Jones T.J., Kobulnicky H.A.
   <Astron. J. 110, 268 (1995)>
   =1995AJ....110..268C
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ADC_Keywords: Polarization ; Photometry, infrared

Abstract:
    We  present VRIJHK polarimetry  and JHK photometry  of highly reddened
    stars found in an  objective  prism  survey  published  by  Stephenson
    (1992AJ....103..263S). The JHK  colors of  these stars  are consistent
    with  interstellar extinction as the dominant source of the reddening.
    The distribution of  the  polarization  position  angles  in  Galactic
    coordinates is very  similar to  previous optical  polarimetry surveys
    such as Mathewson  & Ford ([MNRAS,  74, 139 (1970)].  However, for the
    redder  stars  with  IR  polarimetry,  the  polarization  strength  is
    moderately lower than  expected  for  the  amount  of  extinction.  We
    postulate that the line of  sight  to  many  of  these  stars  samples
    specific regions  where  the  grain  population  has  poor  polarizing
    properties, while the remainder of the line of sight is similar to the
    paths  sampled by previous optical  surveys. The wavelength dependence
    of the polarization  from 1-2.5{mu}m  for this  sample of  stars shows
    weak  evidence for a greater departure  from the mean for interstellar
    polarization than for most published near-infrared polarimetry.

File Summary:
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  FileName      Lrecl  Records   Explanations
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ReadMe             80        .   This file
table1.dat        104       24   VRIJHK polarimetry
table2.dat         32      103   R band polarimetry
table3.dat         57       68   JHK photometry
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Byte-by-byte Description of file: table1.dat
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   Bytes Format Units   Label     Explanations
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   1-  3  I3    ---     Star      Star number from Stephenson (1992)
   6-  9  F4.1  %       PolV      ? Polarisation in V filter
  12- 14  F3.1  %     e_PolV      ? rms uncertainty on PV
  17- 19  I3    deg     PAV       ? Position angle in V filter
  22- 25  F4.1  %       PolR      ? Polarisation in R filter
  29- 31  F3.1  %     e_PolR      ? rms uncertainty on PR
  34- 36  I3    deg     PAR       ? Position angle in R filter
  39- 42  F4.1  %       PolI      ? Polarisation in I filter
  45- 47  F3.1  %     e_PolI      ? rms uncertainty on PI
  52- 54  I3    deg     PAI       ? Position angle in I filter
  57- 59  F3.1  %       PolJ      Polarisation in J filter
  63- 65  F3.1  %     e_PolJ      rms uncertainty on PJ
  69- 71  I3    deg     PAJ       Position angle in J filter
  74- 76  F3.1  %       PolH      ? Polarisation in H filter
  80- 82  F3.1  %     e_PolH      ? rms uncertainty on PH
  85- 87  I3    deg     PAH       ? Position angle in H filter
  91- 93  F3.1  %       PolK      ? Polarisation in K filter
  97- 99  F3.1  %     e_PolK      ? rms uncertainty on PK
 102-104  I3    deg     PAK       ? Position angle in K filter
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Byte-by-byte Description of file: table2.dat
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   Bytes Format Units   Label     Explanations
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   1-  3  I3    ---     Star      Star number from Stephenson (1992)
   9- 13  F5.2  %       PolR      Polarimetry in R filter
  19- 22  F4.2  %     e_PolR      rms uncertainty on PR
  28- 32  F5.1  deg     PAR       Position angle in R filter
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Byte-by-byte Description of file: table3.dat
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   Bytes Format Units   Label     Explanations
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   1-  3  I3    ---     Star      Star number from Stephenson (1992)
   9- 12  F4.2  mag     Jmag      J magnitude
  18- 21  F4.2  mag   e_Jmag      rms uncertainty on J magnitude
  27- 30  F4.2  mag     Hmag      H magnitude
  36- 39  F4.2  mag   e_Hmag      rms uncertainty on H magnitude
  45- 48  F4.2  mag     Kmag      K magnitude
  54- 57  F4.2  mag   e_Kmag      rms uncertainty on K magnitude
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Courtesy: Terry Jones <tjj@astro.spa.umn.edu>
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(End)                                          Patricia Bauer [CDS]  04-Apr-1996