Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Stuart Pottasch"'
Publikováno v:
Astronomy & astrophysics, 502(1), 189-197. EDP Sciences
The mid-infrared spectrum of the rather circular planetary nebula NGC2792 taken with the Spitzer Space Telescope is presented. This spectrum is combined with the ultraviolet IUE spectrum and with the spectrum in the visual wavelength region to obtain
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::194bbc380055c05c439fc7ebb223b9ec
https://doi.org/10.1051/0004-6361/200912076
https://doi.org/10.1051/0004-6361/200912076
Publikováno v:
Astronomy & astrophysics, 499(1), 249-256. EDP Sciences
The spectra of the planetary nebula NGC 6210 is reanalysed using spectral measurements made in the mid-infrared with the Spitzer Space Telescope and the Infrared Space Observatory. The aim is to determine the chemical composition of this object. We a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bfd8ba3e12ac1354eb4198ce852e4c6f
https://hdl.handle.net/11370/eebcb26c-7dc3-4468-8fe0-e83a654e14bb
https://hdl.handle.net/11370/eebcb26c-7dc3-4468-8fe0-e83a654e14bb
Autor:
R. Surendiranath, Stuart Pottasch
Publikováno v:
Astronomy & astrophysics, 483(2), 519-527. EDP Sciences
Aims. We determine the chemical abundances and other parameters of the nebula NGC 6826 and its central star.Methods. We present new ISO spectra and combine them with archival IUE and optical spectra from the literature to get a complete, extinction-c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da58da82c14366dfd1db96ec493d178d
https://doi.org/10.1051/0004-6361:200809380
https://doi.org/10.1051/0004-6361:200809380
Publikováno v:
Astronomy & astrophysics, 481(2), 393-400. EDP Sciences
The spectra of the planetary nebula NGC2392 is reanalysed using spectral measurements made in the mid-infrared with the Spitzer Space Telescope. The aim is to determine the chemical composition of this object. We also make use of IUE and ground based
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c381e1dec193d4b6badd2a6a542506eb
https://doi.org/10.1051/0004-6361:20079041
https://doi.org/10.1051/0004-6361:20079041
Publikováno v:
Astronomy & astrophysics, 471(3), 865-872. EDP Sciences
The spectra of the planetary nebula M1-42 is reanalysed using spectral measurements made in the mid-infrared with the Spitzer Space Telescope. The aim is to determine the chemical composition of this object. We also make use of ISO, IUE and ground ba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::36c4e14eb699392154fecd3ff9a715ae
https://doi.org/10.1051/0004-6361:20077381
https://doi.org/10.1051/0004-6361:20077381
Autor:
R. Surendiranath, Stuart Pottasch
Publikováno v:
Astronomy & astrophysics, 462(1), 179-192. EDP Sciences
The ISO spectra of the bilobal planetary nebula Hb 5 are presented. These spectra are combined with the spectra in the visual wavelength region to obtain a complete, extinction corrected, spectrum. The chemical composition of the nebula is then calcu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce3034fcf5ee1f5e9d89fca636f0cbc6
https://doi.org/10.1051/0004-6361:20066012
https://doi.org/10.1051/0004-6361:20066012
Publikováno v:
Astronomy and astrophysics, 583:A71. EDP Sciences
Context. Planetary nebulae (PNe) abundances are poorly known for those nebulae in the Galactic bulge. This is because of the high and uneven extinction in the bulge which makes visual spectral measurements difficult. In addition, the extinction corre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::774a1de30c348a72c37c03be01a5a213
https://research.rug.nl/en/publications/90b9ec52-6618-4ff9-939d-21a4f3611cce
https://research.rug.nl/en/publications/90b9ec52-6618-4ff9-939d-21a4f3611cce
Autor:
Stuart Pottasch, R. Surendiranath
Publikováno v:
Astronomy & astrophysics, 444(3), 861-870. EDP Sciences
ISO spectra of the bipolar planetary nebula Mz3 are used to determine the element abundances in the bright lobes of the nebula. The ISO spectra alone are sufficient to determine nitrogen, neon, argon, sulfur and iron abundances. These spectra are com
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a42fe8155bf91014e182c684e08cf8a
https://doi.org/10.1051/0004-6361:20053483
https://doi.org/10.1051/0004-6361:20053483
Publikováno v:
Astronomy & astrophysics, 436(3), 953-965. EDP Sciences
The ISO and IUE spectra of the elliptical nebulae NGC2022, NGC6818 and IC4191 are presented. These spectra are combined with the spectra in the visual wavelength region to obtain a complete, extinction corrected, spectrum. The chemical composition of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dcc785bfc0f8327dedc155e567a3ec9f
https://doi.org/10.1051/0004-6361:20042627
https://doi.org/10.1051/0004-6361:20042627
Publikováno v:
Astronomy & astrophysics, 423(2), 593-605. EDP Sciences
The ISO and IUE spectra of the elliptical nebulae NGC 5882, IC 418 and IC 2165 are presented. These spectra are combined with the spectra in the visual wavelength region to obtain a complete, extinction corrected, spectrum. The chemical composition o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2917e49625309bf52debc1576c3b69e6
https://hdl.handle.net/11370/e08276a0-1268-4a0c-a912-1ad627f0d509
https://hdl.handle.net/11370/e08276a0-1268-4a0c-a912-1ad627f0d509