Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Dennis J. Hegyi"'
Autor:
Nazzareno Mandolesi, Philippe Crane, Marc L. Kutner, J. C. Blades, Eliana Palazzi, Dennis J. Hegyi
Publikováno v:
Il Nuovo Cimento C. 13:537-540
The cosmic background radiation temperature at 1.3 mm wavelength has been determined by studying the absorption lines of the interstellar CN toward the star HD 154 368. The resulting value of (2.832±0.072) K is consistent with the weighted average,T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ee53e72f9206bf7192f4f0b6700602d
https://doi.org/10.1007/bf02507093
https://doi.org/10.1007/bf02507093
Publikováno v:
The Astrophysical Journal. 392:172
Speckle interferometric observations of the Population II astrometric binary star μ Cas have been made at four epochs with a direct imaging CCD system. Using the available orbital data on the system, the masses of the stars have been found to be 0.7
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91d06104cc00c3944110c598875d7ad4
https://doi.org/10.1086/171415
https://doi.org/10.1086/171415
Publikováno v:
The Astrophysical Journal. 378:181
Observations of the molecular ion CH + at 4232 A in the direction of ζ Oph have determined the 12 CH + / 13 CH + abundance ratio to be 67.6±4.5. The equivalent widths of 12 CH + and 13 CH + lines used for this determination were 23.246±0.068 mA an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42393313c28231dd33450b25fb9a7eb7
https://doi.org/10.1086/170418
https://doi.org/10.1086/170418
Autor:
Dennis J. Hegyi, D. H. Gudehus
Publikováno v:
The Astronomical Journal. 101:18
Les donnees de la photometrie de surface incluant les magnitudes totales, les couleurs totales, les gradients de couleur, les parametres de la brillance de surface, et les parametres des rayons sont presentees pour un ensemble allant jusqu'a 203 gala
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::969986fdef5a58dc42228e285c282eb7
https://doi.org/10.1086/115664
https://doi.org/10.1086/115664
Autor:
Marc L. Kutner, Eliana Palazzi, Nazzareno Mandolesi, J. C. Blades, Philippe Crane, Dennis J. Hegyi
Publikováno v:
Scopus-Elsevier
A precise value of the cosmic background radiation temperature at 1.32 mm has been determined from the interstellar absorption lines of the CN molecule toward HD 154368. Equivalent widths for CN and (C-13)N in the main cloud are reported. A very weak
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fcbd3dfda55d461cafaba4f0d4de100
https://doi.org/10.1086/168886
https://doi.org/10.1086/168886
Autor:
G. W. Ford, Dennis J. Hegyi
Publikováno v:
Physics Letters B. 219:247-250
Macroscopic effects of theories of quantum gravity containing scalar, vector, and tensor component sin proportions CS:CV:CT are considered. Assuming zero mass fields, the classical tests of general relativity are found to imply, to 90% confidence, CT
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3265a23ee904b9d888b38f7a321c2c87
https://doi.org/10.1016/0370-2693(89)90386-9
https://doi.org/10.1016/0370-2693(89)90386-9
Autor:
Keith A. Olive, Dennis J. Hegyi
Publikováno v:
Physics Letters B. 126:28-32
Several arguments are presented indicating that the apparently non-luminous matter forming massive halos of spiral galaxies is not baryonic. There are difficulties with a halo dominated by gas, snowballs, dust and rocks, jupiters, low mass stars, dea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d0ac06d115ecc6ed591037bef711b36
https://doi.org/10.1016/0370-2693(83)90009-6
https://doi.org/10.1016/0370-2693(83)90009-6
Autor:
Dennis J. Hegyi
Publikováno v:
Annals of the New York Academy of Sciences. 302:528-531
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eac217abdcbd98944fa14f8ddd541d18
https://doi.org/10.1111/j.1749-6632.1977.tb37070.x
https://doi.org/10.1111/j.1749-6632.1977.tb37070.x
Autor:
Dennis J. Hegyi
Publikováno v:
Formation and Evolution of Galaxies and Large Structures in the Universe ISBN: 9789400972476
The problems with massive halos being composed of baryonic matter are discussed. Specifically, a halo composed of either gas, snowballs, dust and rocks, low mass stars, Jupiters, dead stars or neutron stars is shown to be unlikely. Halos could be com
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c6e163706f9513e1a135b1be83ddb53
https://doi.org/10.1007/978-94-009-7245-2_12
https://doi.org/10.1007/978-94-009-7245-2_12
Publikováno v:
Astronomy, Cosmology and Fundamental Physics ISBN: 9789401069236
The determination of TCBR at 1.3 mm is particularly interesting because it lies just at the peak of the Black-Body spectrum, where deviations can be most likely (Matsumoto et al., 1988). However, measurements at this wavelength are extremely difficul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c44aeb694a0204006274157e65030f10
https://doi.org/10.1007/978-94-009-0965-6_43
https://doi.org/10.1007/978-94-009-0965-6_43