Výsledky vyhledávání - "L. W. Neuschaefer"

Deep Optical Imaging of the Bright Seyfert Galaxy NGC 5548: A Long, Very Low Surface Brightness Tail

Autor: K. U. Ratnatunga, Vicki L. Sarajedini, J. Anthony Tyson, Karl Glazebrook, Peter McIlroy, R. A. Wenk, Richard E. Griffiths, Philippe Fischer, John P. Huchra, Puragra Guhathakurta, Lucas M. Macri, L. W. Neuschaefer

Publikováno v: The Astronomical Journal. 116:102-110

Deep Hubble Space Telescope Wide Field Camera (WFC-1) imaging of a region 37 east of the V = 13 mag Seyfert galaxy NGC 5548 in the F555W and F785LP bands, and deep ground-based V and I imaging, show a new extended, blue, low surface brightness struct

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d0bea6b0c222fc40d6553ec060250db2
https://doi.org/10.1086/300395

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Evidence for Galaxy Interactions/Mergers from Medium Deep Survey WFPC2 Data

Autor: Myungshin Im, Stefano Casertano, Kavan U. Ratnatunga, L. W. Neuschaefer, Richard E. Griffiths

Publikováno v: The Astrophysical Journal. 480:59-71

We examine the morphological and statistical properties of close galaxy pairs from two sets of 28 WFPC2 fields, acquired for the Medium Deep Survey (MDS) and the Groth-Westphal Survey (GWS) in F606W (V) and F814W (I) passbands. In the GWS sample all

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4ed9c088b377f127e50e6049d6d1a5dd
https://doi.org/10.1086/303937

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The HST Medium Deep Survey: Galaxy Morphology at High Redshift

Publikováno v: Symposium - International Astronomical Union. 168:219-227

With HST and WFPC2, galaxies in the Medium Deep Survey can be reliably classified to magnitudesI814≲ 22.0 in the F814W band, at a mean redshift. The main result is the relatively high proportion (~40%) of objects which are in some way irregular or

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::72fce7d581e1b801eb2754251dfb4174
https://doi.org/10.1017/s0074180900110101

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Resolving the Faint Galaxy Excess with HST: Results from the Medium Deep Survey

Autor: A. Abraham, Nathan Roche, Gerry Gilmore, Rebecca A. W. Elson, K. U. Ratnatunga, Richard F. Green, Vicki L. Sarajedini, Karl Glazebrook, Richard E. Griffiths, Basilio X. Santiago, L. W. Neuschaefer, Stefano Casertano, Myungshin Im, John P. Huchra, Richard S. Ellis

Publikováno v: New Extragalactic Perspectives in the New South Africa ISBN: 9789401066372

WFPC2 on HST has provided the means to make rapid progress towards solving a long-standing problem in observational cosmology, viz. the nature of the objects contributing to the faint blue galaxy counts. The solution to this problem has been found in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3b73c6cc4a68f9bf56290afa9ff5f04d
https://doi.org/10.1007/978-94-009-0335-7_27

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The HST Medium Deep Susrvey: Galaxy Morphology at High Redshift

Publikováno v: Examining the Big Bang and Diffuse Background Radiations ISBN: 9780792338154

With HST and WFPC2, galaxies in the Medium Deep Survey can be reliably classified to magnitudes I 814 ≲ 22.0 in the F814W band, at a mean redshift \(\bar{z}\) ~0.5. The main result is the relatively high proportion (~40%) of objects which are in so

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a19b4619cea1f9c7628f29ed634260e8
https://doi.org/10.1007/978-94-009-0145-2_23

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The Medium-Deep Survey Using the Hubble Space Telescope

Autor: David Schade, Kavan U. Ratnatunga, D. Phillips, A. J. Tyson, Richard S. Ellis, Rogier A. Windhorst, John P. Huchra, L. W. Neuschaefer, Gerry Gilmore, Rebecca A. W. Elson, P. C. Schmidtke, Duncan A. Forbes, Richard F. Green, Garth D. Illingworth, Richard E. Griffiths, David C. Koo, J. M. Gordon

Publikováno v: Astrophysics and Space Science Library ISBN: 9789401043410

The Medium-Deep Survey is a Key Project with the Hubble Space Telescope: Wide Field Camera (WFC) images with an effective resolution 0.2 arcsec are taken in “parallel mode” of random fields using V and I filters. In the deepest exposures, ≈ 5 �

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5464de2480f3add4b4752474504521c9
https://doi.org/10.1007/978-94-011-0794-5_109

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Galaxy correlation function down to V=26 on 0.5° scales

Autor: Rogier A. Windhorst, L. W. Neuschaefer

Publikováno v: AIP Conference Proceedings.

We extend the galaxy 2‐point correlation function w(θ) down to V∼26 mag on scales θ≲0.5°. For 14≲g≲26 mag, w(θ) roughly maintains a constant slope (1−γ≂−0.6 to −0.8), which has apparently undergone little change over the entire

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::786edf7aa8eca8e94f390e1f5bfc881c
https://doi.org/10.1063/1.40387

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