The infrared K-band identification of the DSO/G2 source from VLT and Keck data
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F14%3A00429558" target="_blank" >RIV/67985815:_____/14:00429558 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1017/S1743921314000726" target="_blank" >http://dx.doi.org/10.1017/S1743921314000726</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1017/S1743921314000726" target="_blank" >10.1017/S1743921314000726</a>
Alternative languages
Result language
angličtina
Original language name
The infrared K-band identification of the DSO/G2 source from VLT and Keck data
Original language description
A fast moving infrared excess source (G2) which is widely interpreted as a core-less gas and dust cloud approaches Sagittarius A* (Sgr A*) on a presumably elliptical orbit. VLT Ks -band and Keck K'-band data result in clear continuum identifications and proper motions of this ˜19 m Dusty S-cluster Object (DSO). In 2002-2007 it is confused with the star S63, but free of confusion again since 2007. Its near-infrared (NIR) colors and a comparison to other sources in the field speak in favor of the DSO being an IR excess star with photospheric continuum emission at 2 microns than a core-less gas and dust cloud. We also find very compact L'-band emission (<0.1") contrasted by the reported extended (0.03" up to ˜0.2" for the tail) Brgamma emission. The presence of a star will change the expected accretion phenomena, since a stellar Roche lobe may retain a fraction of the material during and after the peri-bothron passage.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
—
OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
The Galactic center: Feeding and Feedback in a Normal Galactic Nucleus
ISBN
9781107044616
ISSN
1743-9213
e-ISSN
—
Number of pages
5
Pages from-to
269-273
Publisher name
Cambridge University Press
Place of publication
Cambridge
Event location
Santa Fe
Event date
Sep 30, 2013
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000450812600064