Zobrazeno 1 - 6
of 6
pro vyhledávání: '"K. G. Schaefer"'
Publikováno v:
Physical Review Physics Education Research, Vol 14, Iss 1, p 010147 (2018)
[This paper is part of the Focused Collection on Astronomy Education Research.] This qualitative study investigates astronomers’ and urban public middle school teachers’ beliefs about the characteristics of effective outreach partnerships in form
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab66f8e5c0ec38f940aab642a76500a9
https://doaj.org/article/2e314212ef0f47f896975a5298bb23d1
https://doaj.org/article/2e314212ef0f47f896975a5298bb23d1
Autor:
R. L. Gilliland, Samuel E. Dyson, Elliott P. Horch, Christo Ftaclas, Dimitri Pourbaix, W. F. van Altena, Howard E. Bond, K. G. Schaefer, J. T. Lee, Judith L. Provencal, Robert H. Brown, Harry L. Shipman, H. Wu, Douglas W. Toomey, Terrence M. Girard
Publikováno v:
The Astronomical Journal. 119:2428-2436
The parallax and astrometric orbit of Procyon have been redetermined from PDS measurements of over 250 photographic plates spanning 83 years, with roughly 600 exposures used in the solution. These data are combined with two modern measurements of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ee84433f766b8f5c153aa72a577c4cc
https://doi.org/10.1086/301353
https://doi.org/10.1086/301353
Autor:
Michael S. Sipior, Robin Ciardullo, K. G. Schaefer, Howard E. Bond, Laura K. Fullton, C. Y. Zhang
Publikováno v:
The Astronomical Journal. 118:488-508
We report results of an HST "snapshot" survey aimed at finding resolved binary companions of the central stars of Galactic planetary nebulae (PNe). Using WF/PC and WFPC2, we searched the fields of 113 PNe for stars whose close proximity to the centra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5dfa7ea53403e9531a204c5283666686
https://doi.org/10.1086/300940
https://doi.org/10.1086/300940
Publikováno v:
The Astrophysical Journal. 496:L29-L32
We have used the Hubble Space Telescope's (HST) Goddard High-Resolution Spectrograph to detect a photospheric metallic absorption line, Si III λ1206, in the spectrum of the magnetic white dwarf component of the Hyades precataclysmic binary V471 Taur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a1e88f73ce0799ea0d44631641dba4d
https://doi.org/10.1086/311237
https://doi.org/10.1086/311237
Publikováno v:
White Dwarfs ISBN: 9783540591573
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f77b8f2b775f48d44208a671c2d9a8bc
https://doi.org/10.1007/3-540-59157-5_225
https://doi.org/10.1007/3-540-59157-5_225
Publikováno v:
Planetary Nebulae ISBN: 9780792348931
During Cycle 5 of the HST General Observer program we have been carrying out a “snapshot” survey of central stars of planetary nebulae. The snapshots are short exposures in the V (F555W) and / (F814W) filters, taken with the Wide Field Planetary
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::befbb2be2af9a1e3dabb15c83f3cea3a
https://doi.org/10.1007/978-94-011-5244-0_70
https://doi.org/10.1007/978-94-011-5244-0_70