منابع مشابه
The outermost cluster of M 31 ⋆
We report on the identification of a new cluster in the far halo of the M31 galaxy. The cluster, named Bologna 514 (B514) has an integrated magnitude M V = −8.5 ± 0.6, and a radial velocity, as estimated from two independent low-resolution spectra, V r = −456 ± 23 km/s, which fully confirms its membership to the M31 system. The observed integrated spectrum is very similar to those of classical ...
متن کاملObservations of M 31
As part of the Chandra GTO program we are monitoring and surveying M31 using the HRC and ACIS cameras. These observations have resolved the nuclear X-ray source into five separate sources, one of which is very soft and may (or may not!) be associated with the central super-massive black hole. In addition, the superb spatial resolution and low scattering of the Chandra telescope allows us to una...
متن کاملN ov 2 00 7 M 31 N - 2007 - 06 b : A Nova in the M 31 Globular Cluster Bol 111
We report spectroscopic observations of the nova M31N-2007-06b, which was found to be spatially coincident with the M31 globular cluster Bol 111. This nova is the first out of more than 700 discovered in M31 over the past century to be associated with one of the galaxy’s globular clusters. A total of three spectra of the nova were obtained 3, 6, and 36 days post discovery. The data reveal broad...
متن کاملFormation of giant globular cluster G 1 and the origin of the M 31 stellar halo
We first demonstrate that globular cluster G1 could have been formed by tidal interaction between M31 and a nucleated dwarf galaxy (dE,N). Our fully self-consistent numerical simulations show that during tidal interaction between M31 and G1's progenitor dE,N with M B ∼ −15 mag and its nucleus mass of ∼ 10 7 M ⊙ , the dark matter and the outer stellar envelope of the dE,N are nearly completely s...
متن کاملN ov 2 00 0 The M 31 Globular Cluster Luminosity Function
We combine our compilation of photometry of M31 globular clusters and probable cluster candidates with new near-infrared photometry for 30 objects. Using these data we determine the globular cluster luminosity function (GCLF) in multiple filters for the M31 halo clusters. We find a GCLF peak and dispersion V 0 0 = 16.84 ± 0.11, σt = 0.93± 0.13 (Gaussian σ = 1.20± 0.14), consistent with previous...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1988
ISSN: 0074-1809
DOI: 10.1017/s0074180900042479