Galactic Centre Sequences in B and V
نویسندگان
چکیده
منابع مشابه
environment in the Galactic Centre
We address the question of the dynamics in the inner 50 pc of the Galactic Centre. In a first step we investigate the cloud–cloud collision rate in the Circum-nuclear Disk (CND) with the help of a three dimensional N–body code using gas particles that can have inelastic collisions. The CND might be a longer lived structure than previously assumed. The whole disk–like structure of the CND can th...
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We report on a campaign to identify the counterparts to the population of X-ray sources discovered at the centre of our Galaxy by Wang et al. [7] using Chandra. We have used deep, near infrared images obtained on VLT/ISAAC to identify candidate counterparts as astrometric matches to the X-ray positions. Follow up KS-band spectroscopic observations of the candidate counterparts are used to searc...
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A massive black hole is present at the centre of our galaxy and inevitably accretes dark matter particles, creating a region of very high particle density. The annihilation rate is enhanced with a large number of ee pairs produced either directly or by sucessive decays of mesons. We evaluate the synchrotron emission (and selfabsorption) associated with the propagation of these particles through...
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We simulate collisions involving red-giant stars in the centre of our galaxy. Such encounters may explain the observed paucity of highly luminous red giants within ∼ 0.2 pc of Sgr A⋆. The masses of the missing stars are likely to be in the range ∼ 2M⊙ − 8M⊙. Recent models of the galactic centre cluster’s density distribution and velocity dispersion are used to calculate two-body collision rates...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1976
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/174.1.213