The Galactic centre mini-spiral in the mm-regime
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F12%3A00374254" target="_blank" >RIV/67985815:_____/12:00374254 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1051/0004-6361/201117676" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201117676</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/201117676" target="_blank" >10.1051/0004-6361/201117676</a>
Alternative languages
Result language
angličtina
Original language name
The Galactic centre mini-spiral in the mm-regime
Original language description
Our observations were carried out at 1.3?mm and 3?mm with the mm interferometric array CARMA in California in March and April 2009, with the MIR instrument VISIR at ESO?s VLT in June 2006, and the NIR Br? with VLT NACO in August 2009. We present high resolution maps of the mini-spiral, and obtain a spectral index of 0.5 for Sgr A*, indicating an inverted synchrotron spectrum. We find electron densities within the range 0.8-1.5? ?10^4?cm-3 for the mini-spiral from the radio continuum maps, along with a dust mass contribution of 0.25?M_S from the MIR dust continuum, and extinctions ranging from 1.8?3 in the Br? line. We observe a mixture of negative and positive spectral indices, which we interpret as evidence that there are a range of contributions to the thermal free-free emission by the ionized gas emission and by dust at 1.3?mm.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Result continuities
Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomy & Astrophysics
ISSN
0004-6361
e-ISSN
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Volume of the periodical
538
Issue of the periodical within the volume
February
Country of publishing house
FR - FRANCE
Number of pages
8
Pages from-to
"A127/1"-"A127/8"
UT code for WoS article
000300614100127
EID of the result in the Scopus database
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