Zobrazeno 1 - 10
of 28
pro vyhledávání: '"F. H. Briggs"'
Autor:
F. H. Briggs, D. G. Barnes
Publikováno v:
The Astrophysical Journal. 640:L127-L130
The Westerbork Synthesis Radio Telescope finds a weak 21cm line emission feature at the coordinates (RA-Dec-velocity) of the sub-Damped Lyman-alpha absorber observed at z_abs=0.00632 in the spectrum of PG1216+069. The emission feature, WSRT-J121921+0
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4709cd4a1dc048f731bda67367a71148
https://doi.org/10.1086/503525
https://doi.org/10.1086/503525
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 364(4):1467-1487
A comprehensive analysis of 355 high-quality WSRT HI 21-cm line maps of nearby galaxies shows that the properties and incident rate of Damped Lyman-alpha (DLA) absorption systems observed in the spectra of high redshift QSOs are in good agreement wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c1b1f2d35a387f29b53639fc6be5a8c
https://doi.org/10.1111/j.1365-2966.2005.09698.x
https://doi.org/10.1111/j.1365-2966.2005.09698.x
Autor:
F. H. Briggs
Publikováno v:
Symposium - International Astronomical Union. 199:83-90
Radio absorption line observations of neutral hydrogen gas against extended radio sources offers the means to measure sizes and kinematics in intervening galaxies at all redshifts up to the maximum redshift where radio galaxies are detected. Such obs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c997f6163386461532758fb1b822d9d3
https://doi.org/10.1017/s0074180900168597
https://doi.org/10.1017/s0074180900168597
Publikováno v:
ISLAND UNIVERSES: Astrophysics and Space Science Proceedings
ISLAND UNIVERSES
ISLAND UNIVERSES ISBN: 9781402055720
ISLAND UNIVERSES
ISLAND UNIVERSES ISBN: 9781402055720
We calculate in detail the expected properties of low redshift DLA systems under the assumption that they arise in the gaseous disks of galaxies like those in the z=0 population. A sample of 355 nearby galaxies is analysed, for which high quality HI
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18b44add4253d97d4f8740154e4d3eda
https://hdl.handle.net/11370/1adac836-1358-4a40-a9bf-edb54edc15c7
https://hdl.handle.net/11370/1adac836-1358-4a40-a9bf-edb54edc15c7
Autor:
F. H. Briggs
Neutral intergalactic clouds are so greatly out numbered by galaxies that their integral HI content is negligible in comparison to that contained in optically luminous galaxies. In fact, no HI cloud that is not associated with a galaxy or grouping of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3052035a9f5521c5fd5d9304126c1753
http://arxiv.org/abs/astro-ph/0502306
http://arxiv.org/abs/astro-ph/0502306
Publikováno v:
CIÊNCIAVITAE
University of Hertfordshire
The Astronomical Journal, 113(2), 467-473. IOP PUBLISHING LTD
University of Hertfordshire
The Astronomical Journal, 113(2), 467-473. IOP PUBLISHING LTD
Radio spectroscopy at 323 MHz using the Arecibo Telescope and the VLA has produced a tentative detection of the 21cm line of neutral hydrogen at Z_abs=3.38716+-0.00007 in absorption against the radio continuum of the QSO MG0201+113 (Z_em = 3.61). Thi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e19f92aeccc39462fd2b835f0d86e029
http://arxiv.org/abs/astro-ph/9701202
http://arxiv.org/abs/astro-ph/9701202
Autor:
E. Sorar, F. H. Briggs
Publikováno v:
Cold Gas at High Redshift ISBN: 9789401072731
One of the striking findings of QSO absorption-line studies is that there appears to be substantially more neutral hydrogen at redshift z ≈ 2.5 than there is at present in nearby galaxies. This result comes from the statistics of the “damped Lyma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01b0ff699c1e6266aa6953c2d9b5ba5c
https://doi.org/10.1007/978-94-009-1726-2_32
https://doi.org/10.1007/978-94-009-1726-2_32
Autor:
F. H. Briggs
Publikováno v:
The Westerbork Observatory, Continuing Adventure in Radio Astronomy ISBN: 9789401072762
Most astronomers accept a picture of the formation of the Universe that is described by standard ‘big-bang’ cosmological models, in which the Universe expanded from a hot, dense beginning some 15 to 20 billion years ago. Although determining the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b43aa7d9195c529508da57c1fec6fa6f
https://doi.org/10.1007/978-94-009-1734-7_11
https://doi.org/10.1007/978-94-009-1734-7_11
Publikováno v:
The Light Element Abundances ISBN: 9783662225011
A detailed examination of the detectability of the Lyman series of deuterium in QSO absorption-line systems shows that observations of the high-order Lyman lines in clouds of very high column density, low velocity dispersion (such as “damped Lyα s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cca56145f5f86c320adf16ded96aa0b0
https://doi.org/10.1007/978-3-540-49169-9_12
https://doi.org/10.1007/978-3-540-49169-9_12
Autor:
F. H. Briggs
Publikováno v:
Dynamics and Interactions of Galaxies ISBN: 9783642752759
A sample of galaxies is now available for which HI 21cm line observations allow the development of detailed kinematic models based on concentric, circular rings with adjustable inclinations and orbital velocity (see references 1–9). By examining th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33133a3e111acdfca4b0f3644f1c82d1
https://doi.org/10.1007/978-3-642-75273-5_89
https://doi.org/10.1007/978-3-642-75273-5_89