Spitzer Infrared Spectrograph (IRS) observations of Large Magellanic Cloud planetary nebula SMP 83

Autor: Bernard-Salas, J, Houck, [No Value], Morris, PW, Sloan, GC, Pottasch, [No Value], Barry, DJ

Publikováno v: Astrophysical journal supplement series, 154(1), 271-274. IOP PUBLISHING LTD

The first observations of the infrared spectrum of the LMC planetary nebula SMP 83 as observed by the recently launched Spitzer Space Telescope are presented. The high-resolution (R similar to 600) spectrum shows strong emission lines but no signific

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::bd1717ef3cb07a9cb8add249c1806631
https://research.rug.nl/en/publications/4878adef-0a14-466f-9d2b-7abef58774aa

Chemical composition of planetary nebulae: Including ISO results

Autor: Pottasch, [No Value], Beintema, DA, Salas, JB, Feibelman, WA, Henney, WJ, Franco, J, Martos, M, Pena, M

Publikováno v: IONIZED GASEOUS NEBULAE, 100-105
STARTPAGE=100;ENDPAGE=105;TITLE=IONIZED GASEOUS NEBULAE

The method of determining abundances using Infrared Space Observatory spectra is discussed. The results for seven planetary nebula are given. Using these data, a preliminary discussion of their evolution is given.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::7b264e4e96f0626d55018b7efa3fc7c3
https://research.rug.nl/en/publications/56315158-b5a8-46dd-abf4-4fc343523038

The central star of the Planetary Nebula NGC 6537

Autor: Pottasch, [No Value]

Publikováno v: Astronomy & astrophysics, 362(2), L17-L20. EDP Sciences

The fact that Space Telescope WFPC2 images of the planetary nebula NGC 6537 fail to show the central star is used to derive a limit to its magnitude: it is fainter than a magnitude of 22.4 in the visible. This is used to derive a lower limit to the t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::4c6577f4c872a5fd99832ee01d7f97c1
https://research.rug.nl/en/publications/7ee00576-3663-4be3-9f1b-7f524ec21a71

Abundances and morphology in planetary nebulae

Autor: Pottasch, [No Value], Kastner, JH, Soker, N, Rappaport, SA

Publikováno v: ASYMMETRICAL PLANETARY NEBULAE II: FROM ORIGINS TO MICROSTRUCTURES, 289-296
STARTPAGE=289;ENDPAGE=296;TITLE=ASYMMETRICAL PLANETARY NEBULAE II: FROM ORIGINS TO MICROSTRUCTURES

The abundances of 16 well studied have been determined. New ISO measurements have been combined with optical and ultraviolet data from the literature, in an attempt to obtain accurate values. Only He, O, C, N, Ne, Ar, and S are considered. High value

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::5ca35896d6c4fb3af702f027fa35ce2d
https://research.rug.nl/en/publications/895cac17-2b3b-49bc-a7a3-8e37731fdb56

The ISO spectrum of the planetary nebula NGC 6302 - II. Nebular abundances

Autor: Pottasch, [No Value], Beintema, DA

Publikováno v: Astronomy & astrophysics, 347(3), 975-982. EDP Sciences

The ISO spectrum of NGC 6302 is used, in conjunction with the visible and ultraviolet spectrum, to determine the nebular composition. In addition to being considerably more accurate than previous determinations, the abundances of many more elements (

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::15fd94de9652548afb47c9aa89046f17
https://research.rug.nl/en/publications/34d54499-cb6f-4a8d-8720-0f2f8a9dfbb1