An optical absorption study of the Helix planetary nebula: Na I and Ca II lines, and a search for diffuse bands

Astronomy and Astrophysics

Volumn 428, Issue 2, 2004, Pages 535-543

  Mauron, N ^a   Kendall, T R ^b  

^a UNIVERSITÉ MONTPELLIER II   (France)

^b OBSERVATOIRE DE GRENOBLE   (France)

Author keywords

Circumstellar matter; ISM: lines and bands; ISM: molecules; Planetary nebulae: general; Planetary nebulae: individual: NGC 7293

Indexed keywords

ASTROPHYSICS; GALAXIES; MOLECULES; PHOTOMETRY; PLANETARY SURFACE ANALYSIS; PROBABILITY;

GENERAL - CIRCUMSTELLAR MATTER - ISM; HELIX PLANETARY NEBULA; LINES AND BANDS - ISM; NGC7293 - PLANETARY NEBULAE;

LIGHT ABSORPTION;

EID: 10844224308     PISSN: 00046361     EISSN: None     Source Type: Journal    
DOI: 10.1051/0004-6361:20041346     Document Type: Article

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