Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Marcello Felli"'
Autor:
F. Massi, F. Palagi, S. Di Franco, Marcello Felli, R. Valdettaro, Luca Olmi, Luca Moscadelli, Jan Brand, D. Panella, Claudio Codella, Riccardo Cesaroni, Franco Palla, G. Comoretto, Renzo Nesti
Publikováno v:
Proceedings of the International Astronomical Union. 3:223-227
The Arcetri/Bologna H2O maser group has been monitoring the 1.3-cm water maser emission from a sample of 43 star-forming regions (SFRs) and 22 late-type stars for about 20 years at a sampling rate of 4-5 observations each year, using the 32-m Medicin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5bd9b69f31fbeea941db20ac53fe423
https://doi.org/10.1017/s1743921307013014
https://doi.org/10.1017/s1743921307013014
Autor:
F. Palagi, R. Valdettaro, Riccardo Cesaroni, G. Tofani, S. Di Franco, Franco Palla, G. Comoretto, E. Natale, Jan Brand, D. Panella, Marcello Felli
Publikováno v:
Astronomy & Astrophysics. 368:845-865
We present a second update of the Arcetri Catalog of water masers (Comoretto et al. [CITE]; Brand et al. [CITE]). The present study reports the results of the observations carried out with the Medicina 32-m radiotelescope from January 1993 to April 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a834df8f185b7afac790d911e8806f2
https://doi.org/10.1051/0004-6361:20000526
https://doi.org/10.1051/0004-6361:20000526
Publikováno v:
Astronomy and Astrophysics Supplement Series. 138:71-85
We present VLA radio continuum observations at 3.6 and 6 cm of a ~0.65 sq.deg. field in the galactic plane at l=+45deg . These observations are meant to be used in a comparison with ISO observations at 7 and 15 um of the same region. In this paper we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::874bec166620a13616cb511dfefb7008
https://doi.org/10.1051/aas:1999498
https://doi.org/10.1051/aas:1999498
Publikováno v:
Astronomy and Astrophysics Supplement Series. 136:333-361
There are several indications that strong H2O maser emission arises at the very beginning of the evolu- tion of a massive star and disappears when an Hii region becomes detectable in the radio continuum. If this is the case, one expects to nd dense h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09111652a750aac57d2a43e020d9bf02
https://doi.org/10.1051/aas:1999218
https://doi.org/10.1051/aas:1999218
Autor:
Marcello Felli, Ralph E. Spencer
The quest for high resolution has preoccupied radio astronomers ever since radio waves were first detected from space fifty years ago. This venture was par ticularly stimulated by the discovery of quasars, and led to the development of interferomet
Autor:
Marcello Felli
Publikováno v:
The Structure and Content of Molecular Clouds 25 Years of Molecular Radioastronomy ISBN: 9783540586210
An overview of the connection between water vapor masers and star formation is given. A survey of near infrared sources and H2O-masers is presented.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bfb78f1b01df3ddf2a99ccbf30818562
https://doi.org/10.1007/3540586210_12
https://doi.org/10.1007/3540586210_12
Publikováno v:
Structure and Dynamics of the Interstellar medium ISBN: 9783540519560
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::314e7e9381a5e9d6184b57171a293ac2
https://doi.org/10.1007/bfb0114894
https://doi.org/10.1007/bfb0114894
Autor:
Luca Olmi, Jan Brand, Giovanni Comoretto, D. Panella, F. Palagi, R. Valdettaro, F. Massi, Renzo Nesti, Marcello Felli, Claudio Codella, Riccardo Cesaroni, Luca Moscadelli, S. Di Franco
Context. Water vapor emission at 22 GHz from masers associated with star-forming regions is highly variable. Aims. We present a database of up to 20 years of monitoring of a sample of 43 masers within star-forming regions. The sample covers a large r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fc8ee76899c6f07740f290eab67e6f6c
http://arxiv.org/abs/0710.0790
http://arxiv.org/abs/0710.0790
Publikováno v:
ESO Astrophysics Symposia European Southern Observatory ISBN: 9783540397557
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7210c68ed9f0ff3b443c288b9f8edc86
https://doi.org/10.1007/978-3-540-39756-4_64
https://doi.org/10.1007/978-3-540-39756-4_64
Autor:
F. Palla, Jan Brand, F. Palagi, R. Valdettaro, Marcello Felli, Riccardo Cesaroni, Giovanni Comoretto
Publikováno v:
Dense Molecular Gas Around Protostars and in Galactic Nuclei ISBN: 9781402030383
An overview is given of the analysis of more than a decade of H2O maser data from our monitoring program. We find the maser emission to generally depend on the luminosity of the YSO as well as on the geometry of the SFR. There appears to be a thresho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64eef7a3c1fa25bb1cc8f133baad4cc4
https://doi.org/10.1007/1-4020-3831-3_16
https://doi.org/10.1007/1-4020-3831-3_16