Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/32802
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Reid, M. J. | en_US |
dc.contributor.author | Brunthaler, A. | en_US |
dc.contributor.author | Menten, K. M. | en_US |
dc.contributor.author | Ye, Xu | en_US |
dc.contributor.author | Xing-Wu, Zheng | en_US |
dc.contributor.author | MOSCADELLI, Luca | en_US |
dc.date.accessioned | 2022-12-27T14:09:03Z | - |
dc.date.available | 2022-12-27T14:09:03Z | - |
dc.date.issued | 2007 | en_US |
dc.identifier.isbn | 978-0521-87464-9 | en_US |
dc.identifier.issn | 1743-9213 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/32802 | - |
dc.description.abstract | Astrometric observations with the VLBA with accuracies approaching ~ 10 μas are being conducted in order to better understand the Galaxy. The location of Sgr A* on infrared images can be determined with an accuracy of a few mas, using stars with SiO maser emission as a calibration grid for infrared images. The apparent proper motion of Sgr A*, which is dominated by the effects of the orbit of the Sun around the Galactic center, has been measured with high accuracy. This measurement strongly constrains Θ<SUB>0</SUB>R<SUB>0</SUB> and offers a dynamical definition of the Galactic plane with Sgr A* at its origin. The intrinsic motion of Sgr A* is very small and comparable to that expected for a supermassive black hole. When combined with infrared results, this provides overwhelming evidence that Sgr A* is a supermassive black hole. Finally, we are engaged in a large project to map the spiral structure and kinematics of the Galaxy. Preliminary trigonometric parallaxes, obtained with the VLBA, to eight massive star forming regions are presented. | en_US |
dc.language.iso | eng | en_US |
dc.title | Masers and Galactic structure: Micro-arcsecond astrometry with the VLBA | en_US |
dc.type | Conference paper | - |
dc.identifier.doi | 10.1017/S1743921307013361 | en_US |
dc.identifier.scopus | 2-s2.0-38849204211 | en_US |
dc.identifier.url | https://www.cambridge.org/core/journals/proceedings-of-the-international-astronomical-union/article/masers-and-galactic-structure-microarcsecond-astrometry-with-the-vlba/9AD7F6C06EBEC5055553D487E2482D40 | en_US |
dc.identifier.url | https://api.elsevier.com/content/abstract/scopus_id/38849204211 | en_US |
dc.relation.medium | ELETTRONICO | en_US |
dc.relation.volume | vol. 3, S242 | en_US |
dc.relation.firstpage | 348 | en_US |
dc.relation.lastpage | 355 | en_US |
dc.type.referee | REF_3 | en_US |
dc.description.numberofauthors | 6 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | USA | en_US |
dc.contributor.country | DEU | en_US |
dc.contributor.country | CHN | en_US |
dc.relation.alleditors | Chapman, Jessica M.; Baan, Willem A. | en_US |
dc.relation.ispartofbook | Astrophysical Masers and their Environments | en_US |
dc.publisher.name | Cambridge University Press. | en_US |
dc.publisher.country | GBR | en_US |
dc.type.invited | sì | en_US |
dc.relation.conferencename | Astrophysical Masers and their Environments | en_US |
dc.relation.conferenceplace | Alice Springs, Australia | en_US |
dc.relation.conferencedate | March 12-16, 2007 | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.type.miur | 273 Contributo in Atti di convegno | - |
dc.relation.series | PROCEEDINGS OF THE INTERNATIONAL ASTRONOMICAL UNION | en_US |
dc.identifier.adsbibcode | 2007IAUS..242..348R | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Conference paper | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | O.A. Arcetri | - |
crisitem.author.orcid | 0000-0002-8517-8881 | - |
crisitem.journal.journalissn | 1743-9213 | - |
crisitem.journal.ance | E192651 | - |
Appears in Collections: | 3.01 Contributi in Atti di convegno |
Files in This Item:
File | Description | Size | Format | |
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Reid_2007_IAUS.pdf | PDF editoriale | 1.06 MB | Adobe PDF | View/Open |
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