Infrared point sources aligned with the SgrA(asterisk) non-thermal radio source

Details Infrared point sources aligned with the SgrA(asterisk) non-thermal radio source Infrared point sources aligned with the SgrA(asterisk) non-thermal radio source

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.323..232s&link_type=abstract

Nature (ISSN 0028-0836), vol. 323, Sept. 18, 1986, p. 232-234. Research supported by the National Geographic Society, NSF, and N

Astronomy and Astrophysics

Astronomy

2

Infrared Sources (Astronomy), Nonthermal Radiation, Point Sources, Radio Sources (Astronomy), Sagittarius Constellation, Accretion Disks, Astronomical Models, Black Body Radiation, Galactic Nuclei, Hot Stars, Interstellar Extinction

Scientific paper

Recent observations have revealed point sources at wavelengths 0.7 - 1.0 μm and 1 - 5 μm, which are approximately aligned with the compact non-thermal radio source Sgr A* in the galactic centre. The assembled 0.7 - 5 μm data indicate that the two point sources are at the same position and have spectral continuity; they are thus probably the same object. The authors discuss alternative interpretations of this infrared point source. If it is an object at the galactic centre the infrared emission may be the Rayleigh-Jeans tail of a hot star or star cluster, or thermal accretion disk with temperature ≅35×103K.

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