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J/A+A/541/A98       Interacting planetary nebulae                 (Ali+, 2012)
Interacting planetary nebulae. I. Classification and orientation.
    Ali A., Sabin L., Snaid S., Basurah H.M.
   <Astron. Astrophys., 541, A98-98 (2012)>
   =2012A&A...541A..98A
ADC_Keywords: Planetary nebulae ; Interstellar medium

Keywords: planetary nebulae: general - methods: statistical


Abstract:
    We discuss the classification and orientation of planetary nebulae
    that interact with the interstellar medium throughout the Milky Way. A
    sample of 117 confirmed interacting planetary nebulae is used for this
    purpose. Our results indicate that the majority of interacting objects
    are located close to the Galactic plane, and ∼77% of them are located
    inside the Galactic thin disk.

Description:
    The present sample has been established by collecting IPNe data from a
    large number of articles discussing the subject.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat       125      117   The main parameters of the interacting planetary
                              nebulae sample
refs.dat         143      103   References


See also:
    V/84 : Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (Acker+, 1992)
 J/AJ/115/1989  : Distances of galactic planetary nebulae (Tajitsu+, 1998)
 J/ApJS/112/487 : Planetary nebulae classification (Soker 1997)


Byte-by-byte Description of file: table1.dat

   Bytes Format Units   Label     Explanations

   1-  3  I3    ---     Seq       Sequential number
   5- 15  A11   ---     PN        PN name
  17- 22  F6.2  deg     GLON      Galactic longitude
  24- 29  F6.2  deg     GLAT      Galactic latitude
  31- 42  A12   ---     r_IA      Reference for interaction angle
  46- 47  I2    deg     IA        ? Measured interaction angle
  49- 50  I2    deg     e_IA      ? rms uncertainty on IA
  52- 56  I5    pc      Dist      ? Distance
  58- 61  A4    ---     n_Dist    Measurement method used (1)
  63- 70  A8    ---     r_Dist    References for IPNe distance
  72- 79  F8.2  arcsec  theta     Angular radius θ
  81- 83  I3    ---     r_theta   ? References for IPNe radius
  85- 89  F5.2  km/s    Vexp      ? Expansion velocity
  91- 97  A7    ---     r_Vexp    References for IPNe expansion velocity
  99-104  F6.1  pc      Z         ? Height above the plane
 107-111  F5.3  pc      R         ? Linear radius
 113-120  E8.3  yr      Tdyn      ? Dynamical age
 122-125  A4    ---     Stage     [WZO1-4 ] WZO stage (WZO1 to WZO4) (2)

Note (1): Methods as follows:
   Ind  = means individual distance
   Ph02 = means distances calculated according to Phillips distance
          scale (2002ApJS..139..199P)
   St   = means statistical distances from literature
Note (2): According to 3D-hydrodynamic simulations by Wareing, Zijlstra and
     O’Brien (2007MNRAS.382.1233W) from the beginning  of the slow AGB
     wind phase to the end of the post-AGB/PN phase. The PN-ISM interaction
     process can be divided into four stages:
  * in stage WZO1, the PN expands freely within the bubble of the undisturbed
    slow AGB wind material and is unaffected by the AGB wind-ISM interaction. 
  * in stage WZO2, the PN interacts with the bow shock formed during the AGB
    wind-ISM interaction process, and the density and the emission in the
    upstream side increases accordingly;
  * in stage WZO3, the geometric center of the PN is moving downstream away 
    from the central star
  * in stage WZO4, the PN is completely disrupted and the central star is
    outside the PN.


Byte-by-byte Description of file: refs.dat

   Bytes Format Units   Label     Explanations

   1-  3  I3    ---     Ref       Reference number
   5- 23  A19   ---     BibCode   BibCode
  25- 57  A33   ---     Aut       Author's name
  60-143  A84   ---     Com       Comments


History:
    From electronic version of the journal
(End)                                      Patricia Vannier [CDS]    09-Jul-2012