Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Michael Friedjung"'
Autor:
I. Busà, Antonio Frasca, Corinne Rossi, Michael Friedjung, E. Marilli, G. Muratorio, Anatoly S. Miroshnichenko
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2016, 585, ⟨10.1051/0004-6361/201527022⟩
Astronomy and Astrophysics-A&A, EDP Sciences, 2016, 585, ⟨10.1051/0004-6361/201527022⟩
MWC 314 is one of the most luminous stars in the Milky Way. Its fundamental parameters are similar to those of LBVs, although no large photometric variations have been recorded. We analyzed the radial velocity (RV) variations displayed by the absorpt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2e40b7cb27eda79e6e3a96f6516acff
Publikováno v:
SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
Universidad Nacional de La Plata
instacron:UNLP
Aims. They are the interpretation of the emission line formation regions in CI Cygni. Methods. They involve the examination of radial velocities and fluxes of ultraviolet emission lines at different epochs, deduced from archival IUE and GRHS/HST spec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::467b884a95b0ead7c1b0ddb67e2ec47b
https://doi.org/10.1051/0004-6361:20052655
https://doi.org/10.1051/0004-6361:20052655
Autor:
Joanna Mikołajewska, Michael Friedjung
Publikováno v:
Astrophysics and Space Science. 296:441-444
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4eb40b79b579bd7517314c8c891e036
https://doi.org/10.1007/s10509-005-4870-8
https://doi.org/10.1007/s10509-005-4870-8
Autor:
P. Selvelli, Michael Friedjung
Publikováno v:
Astronomy & Astrophysics. 401:297-311
This new UV study of the ex-nova HR Del is based on all of the data obtained with the IUE satellite, and includes the important series of spectra taken in 1988 and 1992 that have not been analyzed so far. After the correction for the reddening (EB-V)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c59be9ab8c28125ba461d3cc94490a8
https://doi.org/10.1051/0004-6361:20030109
https://doi.org/10.1051/0004-6361:20030109
Publikováno v:
Astronomy & Astrophysics. 400:595-598
We have combined recent radial velocity measurements of Fekel et al. ([CITE]) with previously studied older ones, to test for the continued presence of the second period, found by Galis et al. ([CITE]), which could be due to pulsations of the cool co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00793afd853cbe69c368db01af0ec667
https://doi.org/10.1051/0004-6361:20030041
https://doi.org/10.1051/0004-6361:20030041
Publikováno v:
Astronomy & Astrophysics. 381:507-516
In our investigation of the region of formation of the Fe II emission lines in RR Tel, we have applied the SAC method to the optical Fe II emission line fluxes measured by Crawford et al. (1999). It is possible to determine physical parameters of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75d91a936e490ddbc68a6991b48664fd
https://doi.org/10.1051/0004-6361:20011575
https://doi.org/10.1051/0004-6361:20011575
Publikováno v:
Astrophysics and Space Science. 280:413-418
We have used the SAC (self absorption curve) method to analyse the fluxes of optical Fe II emission lines published by Crawford et al. (1999).Certain lines have considerable self absorption. Information about both the populations of the upper and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abb90b7263996127651415e1c4336194
https://doi.org/10.1023/a:1015690512197
https://doi.org/10.1023/a:1015690512197
Publikováno v:
Close Binaries in the 21st Century: New Opportunities and Challenges ISBN: 9781402050268
JHKL photometry of the symbiotic Mira RR Tel over 25 years shows variable fading in all bands which has been explained by obscuration due to dust as a result of the symbiotic nature of this binary. The evolutionary track (time changes) of the star ha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::75eb7db91b10c9612b164191ca84611d
https://doi.org/10.1007/s10509-006-9139-3
https://doi.org/10.1007/s10509-006-9139-3
Publikováno v:
Astrophysics and Space Science. 304:317-319
Our mainly R band photometry of V1493 Aql (1999) during its outburst, indicates periodic variations with a period of 0.156 days, seen only 5 days after the maximum in V. This period can be orbital. The light curve indicates in addition, the presence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4091d364ede5a1004882505e581e4f3f
https://doi.org/10.1007/s10509-006-9141-9
https://doi.org/10.1007/s10509-006-9141-9
Autor:
Michael Friedjung
Publikováno v:
New Astronomy. 2:319-322
Observations of the parallax of the cataclysmic binary AE Aqr, using the HIPPARCOS satellite, are combined with the published spectrum and magnitudes in the K band. The radius of the cool component of the binary is probably significantly larger than
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0dc1ecf568e1412db72a2184c856079
https://doi.org/10.1016/s1384-1076(97)00024-9
https://doi.org/10.1016/s1384-1076(97)00024-9