Zobrazeno 1 - 10
of 31
pro vyhledávání: '"A.R. Upgren"'
Publikováno v:
Symposium - International Astronomical Union. 133:469-473
Measures of 25 members of the Hyades and about 260 field stars have been made for parallax and proper motion in two ways, automatically using a PDS microdensitometer and manually using a conventional measuring machine. Reductions show the parallax er
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52549a7750def94b9e7d4f30f97487a4
https://doi.org/10.1017/s0074180900140045
https://doi.org/10.1017/s0074180900140045
Autor:
A.R. Upgren
Publikováno v:
Vistas in Astronomy. 21:241-264
The methods for evaluating internal and external errors in parallaxes are reviewed and the results of each method are examined. The influence on parallax errors of variations in the weighting of individual parallax observations and of variations in r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ab17ec66fc8ef91bac752449755d7bf
https://doi.org/10.1016/0083-6656(77)90032-0
https://doi.org/10.1016/0083-6656(77)90032-0
Autor:
A.R. Upgren
Publikováno v:
Vistas in Astronomy. 10:159-165
The prominent role now being played by open clusters in studies of stellar evolution indicates a need for more extensive and precise knowledge of the proper motions of members of such systems. Indeed, it is likely that the solutions to many problems
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09a4cbba0944e41b2152e76fac7bfd19
https://doi.org/10.1016/0083-6656(68)90046-9
https://doi.org/10.1016/0083-6656(68)90046-9
Akademický článek
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Autor:
A.R. Upgren
Publikováno v:
The ANNALS of the American Academy of Political and Social Science. 208:223-224
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a193ef943af8ea54cc3bfdb8c9311d6
https://doi.org/10.1177/000271624020800161
https://doi.org/10.1177/000271624020800161
Autor:
A.R. Upgren
Publikováno v:
The ANNALS of the American Academy of Political and Social Science. 200:324-325
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38811805a13d6b38d5933157a128e392
https://doi.org/10.1177/000271623820000141
https://doi.org/10.1177/000271623820000141
Autor:
A.R. Upgren
Publikováno v:
The Astronomical Journal. 79:651
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b22a96bbb28ad43038a2895042160653
https://doi.org/10.1086/111591
https://doi.org/10.1086/111591
Autor:
A.R. Upgren
Publikováno v:
The ANNALS of the American Academy of Political and Social Science. 200:323-323
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::062b07cd4bcb64730e49257302c8775d
https://doi.org/10.1177/000271623820000139
https://doi.org/10.1177/000271623820000139
Autor:
A.R. Upgren, R.T. Staron
Publikováno v:
The Astrophysical Journal Supplement Series. 19:367
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f2928879cc0e788a2c7428ad7d1e79a
https://doi.org/10.1086/190214
https://doi.org/10.1086/190214
Autor:
A.R. Upgren
Publikováno v:
The ANNALS of the American Academy of Political and Social Science. 211:228-228
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59f6b71c05b946f295c7335aee122196
https://doi.org/10.1177/000271624021100161
https://doi.org/10.1177/000271624021100161