Nature of the Galactic centre NIR-excess sources I. What can we learn from the continuum observations of the DSO/G2 source?

0484222 - ASÚ 2018 RIV FR eng J - Článek v odborném periodiku
Zajaček, Michal - Britzen, S. - Eckart, A. - Shahzamanian, B. - Busch, G. - Karas, Vladimír - Parsa, M. - Peissker, F. - Dovčiak, Michal - Subroweit, M. - Dinnbier, F. - Zensus, J. A.
Nature of the Galactic centre NIR-excess sources I. What can we learn from the continuum observations of the DSO/G2 source?
Astronomy & Astrophysics. Roč. 602, June (2017), A121/1-A121/21. ISSN 0004-6361. E-ISSN 1432-0746
Grant CEP: GA ČR GB14-37086G
Institucionální podpora: RVO:67985815
Klíčová slova: supermassive black-hole * young stellar objects * center cloud g2
Obor OECD: Astronomy (including astrophysics,space science)
Impakt faktor: 5.565, rok: 2017

The Dusty S-cluster Object (DSO/G2) orbiting the supermassive black hole (Sgr A*) in the Galactic centre has been monitored in both near-infrared continuum and line emission. There has been a dispute about the character and the compactness of the object: it being interpreted as either a gas cloud or a dust-enshrouded star. A recent analysis of polarimetry data in K-s-band (2.2 mu m) allows us to put further constraints on the geometry of the DSO. The purpose of this paper is to constrain the nature and the geometry of the DSO.
Trvalý link: http://hdl.handle.net/11104/0279362