Zobrazeno 1 - 10
of 12
pro vyhledávání: '"G. F. Bisiacchi"'
Autor:
C. Espejo, J. Elon Graves, G. F. Bisiacchi, Andrea Aparicio Martinez, Salvador Cuevas, Olivier Guyon, Valeri Vuntesmeri, Claude Roddier, Salustio Gonzalez, Francois Roddier
Publikováno v:
Publications of the Astronomical Society of the Pacific. 111:1322-1331
The nulling coronagraph, first proposed by Roddier and Roddier, uses a small mask (less than half the size of the central Airy spot) that shifts the phase of the incoming light by 180° to strongly attenuate the Airy spot as well as the rings. We rep
Publikováno v:
Symposium - International Astronomical Union. 83:421-424
The current ideas concerning the evolution of close binary systems (van den Heuvel, 1976), accepting the hypothesis that the system is not disrupted by the first supernova (SN) explosion, predict that the Wolf-Rayet phase can occur twice. The first t
Publikováno v:
Mass Loss and Evolution of O-Type Stars ISBN: 9789027709899
The current ideas concerning the evolution of close binary systems (van den Heuvel, 1976), accepting the hypothesis that the system is not disrupted by the first supernova (SN) explosion, predict that the Wolf-Rayet phase can occur twice. The first t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b52b0c4e8647ef747192b75a8bff3f6a
https://doi.org/10.1007/978-94-009-9452-2_59
https://doi.org/10.1007/978-94-009-9452-2_59
Publikováno v:
Wolf-Rayet Stars: Observations, Physics, Evolution ISBN: 9789027714701
During the last years, many authors have recognized the existence of some OB stars that show the nitrogen absorption lines enhanced (Walborn 1970, 1971; Conti 1973; Jashek and Jashek 1974).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b3c384717d20590e420623b19aa2350
https://doi.org/10.1007/978-94-009-7910-9_52
https://doi.org/10.1007/978-94-009-7910-9_52
Publikováno v:
Astronomy with Schmidt-Type Telescopes ISBN: 9789400963894
The new detector MEPSICRON (microchannel electron position sensor with time resolution) is an image photomultiplier sensor for high spatial and time resolution, working in a photon counting regime. It has been especially designed for deep sky photome
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2e459f03a575f73d6c3a554b0d009d8
https://doi.org/10.1007/978-94-009-6387-0_25
https://doi.org/10.1007/978-94-009-6387-0_25
Autor:
C. Firmani, G. F. Bisiacchi
Publikováno v:
Effects of Mass Loss on Stellar Evolution ISBN: 9789400985025
The distribution of the spectral types of the WR stars in our galaxy is different at different distances from the galactic center. This distribution is also different in all three galaxies, in our, in the LMC and in the SMC. These results have been i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27f02bca0c58624c25be0a938adb5e87
https://doi.org/10.1007/978-94-009-8500-1_34
https://doi.org/10.1007/978-94-009-8500-1_34
Autor:
Francesco Paresce, G. F. Bisiacchi, Luis Salas, Leonel Gutierrez, Claudio Firmani, Elfegc Ruiz
Publikováno v:
Instrumentation in Astronomy V.
A 25mm. diameter, S25 photocathode, 10- pixel position sensitive photomatrix tube has been recently tested at the focus of the 2.12 m. telescope of the Observatorio Astronomico Nacional at San Pedro Martir in Baja, California. Direct imaging, high re
Publisher Summary This chapter discusses the high-spatial and temporal-resolution imaging with a resistive anode photon counter. The new detector—Mepsicron (microchannel electron position sensor with time resolution)—has been developed to overcom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fcc462363e871f10f99cc5a7fdff9cdc
https://doi.org/10.1016/s0065-2539(08)61509-7
https://doi.org/10.1016/s0065-2539(08)61509-7
Publikováno v:
Mass Loss and Evolution of O-Type Stars ISBN: 9789027709899
We propose that most of the OB runaway stars are Old Disk Population objects in the same evolutionary phase as the hot UV-bright stars in globular clusters. Bimodal Gaussian fits to the peculiar radial velocity distribution are computed for 386 O-typ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d53da32a1972832828816234d4127572
https://doi.org/10.1007/978-94-009-9452-2_45
https://doi.org/10.1007/978-94-009-9452-2_45
Publikováno v:
The Astrophysical Journal. 239:607