A FEATURE OF STELLAR DENSITY DISTRIBUTION WITHIN THE TIDAL RADIUS OF GLOBULAR CLUSTER NGC 6626 (M28) IN THE GALACTIC BULGE

2012 ◽  
Vol 144 (1) ◽  
pp. 26 ◽  
Author(s):  
Sang-Hyun Chun ◽  
Jae-Woo Kim ◽  
Myo Jin Kim ◽  
Ho-Il Kim ◽  
Jang-Hyun Park ◽  
...  
Keyword(s):  
Density Distribution ◽  
Globular Cluster ◽  
Galactic Bulge ◽  
Stellar Density

scholarly journals 3.17. MACHO RR Lyrae stars in the Galactic bulge: the spatial distribution

1998 ◽  
Vol 184 ◽  
pp. 123-124
Author(s):  
D. Minniti ◽  
C. Alcock ◽  
D. Alves ◽  
K. Cook ◽  
S. Marshall ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Density Distribution ◽  
Surface Density ◽  
Galactic Bulge ◽  
Rr Lyrae Stars ◽  
Rr Lyrae ◽  
Type C ◽  
Type Ab ◽  
Lyrae Stars

We have analyzed a sample of 1150 type ab, and 550 type c RR Lyrae stars found in 24 of 94 bulge fields of the MACHO database. These fields cover a range in Galactocentric distances from 0.3 to 1.6 kpc. In combination with the data on the outer bulge fields of Alard (1997) and Wesselink (1987), here we present the surface density distribution of bulge RR Lyrae between 0.3 and 3 kpc.

scholarly journals Mercer 5: a probable new globular cluster in the Galactic bulge

2011 ◽  
pp. no-no ◽  
Author(s):  
A. J. Longmore ◽  
R. Kurtev ◽  
P. W. Lucas ◽  
D. Froebrich ◽  
R. de Grijs ◽  
...  
Keyword(s):  
Globular Cluster ◽  
Galactic Bulge

scholarly journals A deep view of a fossil relic in the Galactic bulge: the Globular Cluster HP 1

2019 ◽  
Vol 484 (4) ◽  
pp. 5530-5550 ◽  
Author(s):  
L O Kerber ◽  
M Libralato ◽  
S O Souza ◽  
R A P Oliveira ◽  
S Ortolani ◽  
...  
Keyword(s):  
Globular Cluster ◽  
Galactic Bulge

The Elephant Graveyard: 24 New Globular Cluster Candidates in the Galactic Bulge

2017 ◽  
Vol 1 (1) ◽  
pp. 54 ◽  
Author(s):  
Dante Minniti ◽  
Javier Alonso-García ◽  
Joyce Pullen
Keyword(s):  
Globular Cluster ◽  
Galactic Bulge

Background Giants in the Field of the Globular Cluster M22: Kinematics of the Galactic Bulge

1996 ◽  
Vol 112 ◽  
pp. 590 ◽  
Author(s):  
Dante Minniti ◽  
James Liebert ◽  
Edward W. Olszewski ◽  
Simon D. M. White
Keyword(s):  
Globular Cluster ◽  
Galactic Bulge

JASMINE – design and method of data reduction

2007 ◽  
Vol 3 (S245) ◽  
pp. 419-420
Author(s):  
Yoshiyuki Yamada ◽  
Naoteru Gouda ◽  
Taihei Yano ◽  
Yukiyasu Kobayashi ◽  
Yoshito Niwa ◽  
...  
Keyword(s):  
High Accuracy ◽  
Simulation Software ◽  
Galactic Bulge ◽  
Satellite Mission ◽  
Observation Strategy ◽  
Bulge Region ◽  
Strategy Design ◽  
Stellar Density ◽  
Very High ◽  
Dust Absorption

AbstractJapan Astrometry Satellite Mission for Infrared Exploration (JASMINE) aims to construct a map of the Galactic bulge with 10 μ arc sec accuracy. We use z-band CCD for avoiding dust absorption, and observe about 10 × 20 degrees area around the Galactic bulge region. Because the stellar density is very high, each FOVs can be combined with high accuracy. With 5 years observation, we will construct 10 μ arc sec accurate map.In this poster, I will show the observation strategy, design of JASMINE hardware, reduction scheme, and error budget. We also construct simulation software named JASMINE Simulator. We also show the simulation results and design of software.

scholarly journals Spectroscopy of the Globular Clusters in M87

1987 ◽  
Vol 127 ◽  
pp. 451-452
Author(s):  
J.R. Mould ◽  
J.B. Oke ◽  
J.M. Nemec
Keyword(s):  
Density Distribution ◽  
Globular Cluster ◽  
Globular Clusters ◽  
Milky Way ◽  
Velocity Dispersion ◽  
Cluster System ◽  
Hot Gas ◽  
The Mean ◽  
Globular Cluster System ◽  
Young Clusters

With a velocity dispersion of 370 ± 50 km/sec the globular cluster system of M87 is kinematically hotter than the stars in the giant elliptical itself. This is consistent with the clusters' shallower density distribution for isotropic orbits. the mean metallicity of the 27 clusters in the sample analyzed here is no more than a factor of 2 more metal rich than the cluster system of the Milky Way, but considerably more metal poor than the integrated starlight in the field at a radius of 1' from the center of M87. There is no evidence for the existence of young clusters in the system. the mass-radius relation between 1' and 5' required to contain the globular clusters joins on to that required to contain the hot gas around M87.

scholarly journals TiO bands in composite systems

1993 ◽  
Vol 153 ◽  
pp. 313-314
Author(s):  
A. Milone ◽  
B. Barbuy
Keyword(s):  
Globular Cluster ◽  
Elliptical Galaxies ◽  
Galactic Bulge ◽  
Composite Systems ◽  
Composite Spectra

TiO bands at λ 620 nm are synthesized. The behaviour of these bands as a function of stellar parameters is studied. Application to composite spectra of one galactic bulge globular cluster and to bulges of elliptical galaxies is also carried out. TiO bands may be useful metallicity indicators.

scholarly journals Terzan 5: a pristine fragment of the Bulge

2012 ◽  
Vol 10 (H16) ◽  
pp. 243-244
Author(s):  
Francesco R. Ferraro
Keyword(s):  
Globular Cluster ◽  
Iron Content ◽  
Stellar System ◽  
Stellar Populations ◽  
Galactic Bulge ◽  
Chemical Similarity ◽  
Different Ages ◽  
Supernova Explosions

AbstractWe have discovered that Terzan 5, a stellar system in the Galactic Bulge, harbors two stellar populations with different iron content (Δ[Fe/H] ~ 0.5 dex) and possibly different ages. Moreover, the observed chemical patterns significantly differ from those observed in any known genuine globular cluster. These evidences demonstrate that, similarly to ω Centauri in the Halo, Terzan 5 is not a globular cluster, but a stellar system that was able to retain the gas ejected by violent supernova explosions. Moreover the striking chemical similarity with the Bulge stars suggests that Terzan 5 could be the relic of one of the massive clumps that contributed (through strong dynamical interactions with other pre-formed and internally-evolved sub-structures) to the formation of the Galactic Bulge.

scholarly journals Star formation in the Galactic bulge: the role of collisions

2007 ◽  
Vol 3 (S245) ◽  
pp. 189-190
Author(s):  
Mark Cropper ◽  
Dave Vande Putte
Keyword(s):  
Star Formation ◽  
Globular Cluster ◽  
High Frequency ◽  
Galactic Bulge ◽  
Galactic Disks ◽  
Cluster Cores

AbstractPrompted by the possibility that we have observed star formation triggered by globular cluster and dwarf spheroidal transits through galactic disks, we have examined kinematic evidence as to whether the superstar clusters in the Galactic bulge could have been formed from such transits. From their trajectores, we cannot exclude such a possibility. We note also that the high frequency of these transits may have generated rapid star formation at early times, and that remnant cluster cores may themselves nucleate further star formation.

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