Zobrazeno 1 - 10
of 10
pro vyhledávání: '"J. W. S. Vilas Boas"'
Publikováno v:
The Astrophysical Journal. 532:1038-1050
More than 110 dense condensations of the dark clouds in Lupus, Corona Australis, Norma, Vela, and Scorpius were observed in the 13CO and C18O (J = 1-0) transitions. The condensations of dark clouds with high star formation activity like the Ophiuchus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc58b5d5a253b68aa1d2cc1fedc3a38b
https://doi.org/10.1086/308586
https://doi.org/10.1086/308586
Autor:
Zulema Abraham, J. W. S. Vilas Boas
Publikováno v:
Astrophysical Masers ISBN: 9783540563433
We report the time behaviour of the highly polarized 8 km s−1 water maser source in the Orion nebula. During the last few years the flux density was low and it presented three small outbursts. In each case, although the total intensity was of the s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::880a6a18053ce477d5cae9604506a022
https://doi.org/10.1007/3-540-56343-1_258
https://doi.org/10.1007/3-540-56343-1_258
Publikováno v:
Astrochemistry of Cosmic Phenomena ISBN: 9780792318255
The H2O maser source in G305.8 - 0.2 was first detected by Haynes et al. (1984). Inspection of the Southern Hemisphere radio surveys did not show any strong compact HII region or water maser placed nearby this source. The IRAS point source catalog (2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf52e01ab5fb9abf8b761dac54ed3c14
https://doi.org/10.1007/978-94-011-2761-5_95
https://doi.org/10.1007/978-94-011-2761-5_95
Autor:
J. W. S. Vilas Boas, Zulema Abraham
Publikováno v:
Astrochemistry of Cosmic Phenomena ISBN: 9780792318255
We present the results of 12 years of observations of the 8 km S-1 water maser in Orion. Four large flares in the flux density were observed, as well as variability in the degree and angle of polarization. The profile of the line is also variable, in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e30eded8f338573d4f0f254fa3bb6c23
https://doi.org/10.1007/978-94-011-2761-5_61
https://doi.org/10.1007/978-94-011-2761-5_61
Publikováno v:
The Astrophysical Journal. 433:96
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4db0285a69066413bb041dd02f4c0197
https://doi.org/10.1086/174628
https://doi.org/10.1086/174628
Publikováno v:
The Astronomical Journal. 102:1734
Observations of water vapor and silicon monoxide masers were conducted in the direction of G305.8−0.2. No SiO maser emission above 7 Jy of flux density was detected. The short-time variability of the H 2 O maser together with the absence of compact
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::777284c632856ad7aab004d91036bbf2
https://doi.org/10.1086/115994
https://doi.org/10.1086/115994
Publikováno v:
Astrophysics and Space Science. 141:339-346
The ammonia emission associated with southern galacticHii regions have been studied. Some physical parameters, computed for each individual sources, were derived and a brief discussion follows.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed4670131f8553fe4903662bf662a49a
https://doi.org/10.1007/bf00639499
https://doi.org/10.1007/bf00639499
Autor:
V. L. R. Kuntz, Pierre Kaufmann, L. R. Piazza, J. W. S. Vilas Boas, N. M. Paes Leme, K. Brecher, J. Crouchley
Publikováno v:
Science (New York, N.Y.). 246(4931)
The June 1975 meteoroid storm detected on the moon by the Apollo seismometers was the largest ever observed. Reexamination of radio data taken at that time showed that the storm also produced pronounced disturbances on Earth, which were recorded as u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cdb23689ee05f5a10898b28c3b54a0c4
https://pubmed.ncbi.nlm.nih.gov/17748704
https://pubmed.ncbi.nlm.nih.gov/17748704
Publikováno v:
Publications of the Astronomical Society of Australia. 4:250-251
Ammonia was searched in the direction of 46 sources placed in the southern hemisphere where H2CO or H2O was detected previously. Observations were carried out at Itapetinga Radio Observatory, Atibaia, Brazil using a 13.7 m paraboloid. The receiver us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc24268a745ad96249146517c5560f0e
https://doi.org/10.1017/s1323358000016520
https://doi.org/10.1017/s1323358000016520
Publikováno v:
The Astronomical Journal. 86:1939
Microwave emission associated with the para form of ammonia, in the (1, 1) line, was searched for in the direction of 46 southern sky positions where strong H/sub 2/CO absorption or strong H/sub 2/O maser emission was observed previously. The results
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f58b027f213028ad1a6b752cfcc16568
https://doi.org/10.1086/113076
https://doi.org/10.1086/113076