Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Joern Rossa"'
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 499:1072-1072
Publikováno v:
Astronomy & Astrophysics. 457:779-785
In Paper I we showed that multi-phase gaseous halos of late-type spiral galaxies, detected in the radio continuum, in Halpha, and in X-rays, are remarkably well correlated regarding their morphology and spatial extent. In this work we present new res
Autor:
Joern Rossa, J. Gerssen, Joseph C. Shields, Roeland P. van der Marel, Torsten Boeker, C. J. Walcher, Luis C. Ho, Hans-Walter Rix
Publikováno v:
The Astronomical Journal. 132:1074-1099
(Abridged) We study the nuclear star clusters in spiral galaxies of various Hubble types using spectra obtained with STIS on-board HST. We observed the nuclear clusters in 40 galaxies, selected from two previous HST/WFPC2 imaging surveys. The spectra
Autor:
Torsten Böker, J. Gerssen, Joern Rossa, C. J. Walcher, P. Roeland van der Mare, Hans-Walter Rix, C. Luis Ho, C. Joseph Shields
Publikováno v:
ISLAND UNIVERSES ISBN: 9781402055720
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c33650387ef81a3986a95fb7401d5f6c
https://doi.org/10.1007/978-1-4020-5573-7_78
https://doi.org/10.1007/978-1-4020-5573-7_78
Autor:
Roeland P. van der Marel, Torsten Boeker, Hans-Walter Rix, Carl Jakob Walcher, Luis C. Ho, Joseph C. Shields, Joern Rossa
HST observations have revealed that compact sources exist at the centers of many, maybe even most, galaxies across the Hubble sequence. These sources are called "nuclei" or also "nuclear star clusters" (NCs), given that their structural properties an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f8edc9d5e8e890f67ad83fb6d2bf615
http://arxiv.org/abs/astro-ph/0702433
http://arxiv.org/abs/astro-ph/0702433
Autor:
Roeland P. van der Marel, Torsten Boeker, Seppo Laine, Ann I. Zabludoff, J. Christopher Mihos, John E. Hibbard, Joern Rossa
We discuss the near-infrared properties of the nuclei in the 11 merging galaxies of the Toomre sequence, based on high spatial resolution J, H, and K imaging data using NICMOS onboard the Hubble Space Telescope (HST). The observations are less affect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9997d159c5c1adc2391e8767df284b74
Autor:
Joseph C. Shields, C. J. Walcher, Luis C. Ho, Hans-Walter Rix, Joern Rossa, Roeland P. van der Marel, Torsten Boeker, Stéphane Charlot
(Abridged) As part of an ongoing effort to study the stellar nuclei of very late-type, bulge-less spirals, we present results from a high-resolution spectroscopic survey of nine such nuclear star clusters, undertaken with VLT/UVES. We fit the spectra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a46271adf64b9a6f78b6b0d5a409ddc
(Abridged) Spiral galaxies often have extended outflows that permeate beyond the region of the disk. Such outflows have been seen both in starburst galaxies, actively star forming galaxies and galaxies with an AGN. In the latter galaxies it is unknow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7641e4fc05d60e2ac5569fcfa925581e
We present deep narrowband observations with high spatial resolution of extraplanar diffuse ionized gas in the halo of NGC891, obtained with the WFPC2 on-board the HST. Our H-alpha observations, centered on the northern part of NGC891, reveal an exte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8eeb4b32bc80310c4a8fbdf2d178d5db
Autor:
Roeland P. van der Marel, Torsten Boeker, Ann I. Zabludoff, Joern Rossa, John E. Hibbard, J. Christopher Mihos, Seppo Laine
We report on the properties of nuclear regions in the Toomre Sequence of merging galaxies, based on imaging data gathered with the Hubble Space Telescope WFPC2 camera. We have imaged the 11 systems in the proposed evolutionary merger sequence in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87a45020640fe1ada0c129ba256d172d
http://arxiv.org/abs/astro-ph/0309377
http://arxiv.org/abs/astro-ph/0309377