scholarly journals Stellar and wind properties of massive stars in the central parsec of the Galaxy

2006 ◽  
Vol 2 (14) ◽  
pp. 207-207
Author(s):  
Fabrice Martins ◽  
Reinhard Genzel ◽  
Frank Eisenhauer ◽  
Thibaut Paumard ◽  
Thomas Ott ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Massive Stars ◽  
The Galaxy ◽  
Central Parsec

AbstractThe stellar and wind properties of the new population of massive stars in the central parsec of the Galaxy are derived through quantitative analysis with atmosphere models.

scholarly journals Stellar and wind properties of massive stars in the central parsec of the Galaxy

2007 ◽  
Vol 468 (1) ◽  
pp. 233-254 ◽  
Author(s):  
F. Martins ◽  
R. Genzel ◽  
D. J. Hillier ◽  
F. Eisenhauer ◽  
T. Paumard ◽  
...  
Keyword(s):  
Massive Stars ◽  
The Galaxy ◽  
Central Parsec

scholarly journals Stellar and wind properties of massive stars in the central parsec of the Galaxy

2006 ◽  
Vol 54 ◽  
pp. 266-272 ◽  
Author(s):  
Fabrice Martins ◽  
Reinhard Genzel ◽  
Frank Eisenhauer ◽  
Thibaut Paumard ◽  
Thomas Ott ◽  
...  
Keyword(s):  
Massive Stars ◽  
The Galaxy ◽  
Central Parsec

scholarly journals NuSTAR and Chandra Observations of New X-Ray Transients in the Central Parsec of the Galaxy

2019 ◽  
Vol 885 (2) ◽  
pp. 142 ◽  
Author(s):  
Kaya Mori ◽  
Charles J. Hailey ◽  
Shifra Mandel ◽  
Yve E. Schutt ◽  
Matteo Bachetti ◽  
...  
Keyword(s):  
X Ray ◽  
The Galaxy ◽  
Central Parsec

scholarly journals The VLT–FLAMES Tarantula Survey

2009 ◽  
Vol 5 (S266) ◽  
pp. 35-40 ◽  
Author(s):  
C. J. Evans ◽  
N. Bastian ◽  
Y. Beletsky ◽  
I. Brott ◽  
M. Cantiello ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Massive Stars ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Cluster Evolution ◽  
30 Doradus

AbstractThe Tarantula Survey is an ambitious ESO Large Programme that has obtained multi-epoch spectroscopy of over 1000 massive stars in the 30 Doradus region in the Large Magellanic Cloud. Here, we introduce the scientific motivations of the survey and give an overview of the observational sample. Ultimately, quantitative analysis of every star, paying particular attention to the effects of rotational mixing and binarity, will be used to address fundamental questions in both stellar and cluster evolution.

scholarly journals Populations of OB-type stars in galaxies

2010 ◽  
Vol 6 (S272) ◽  
pp. 233-241
Author(s):  
Christopher J. Evans
Keyword(s):  
Stellar Evolution ◽  
Massive Stars ◽  
Spectral Synthesis ◽  
High Redshift ◽  
Young Star ◽  
Magellanic Clouds ◽  
Star Forming ◽  
The Galaxy ◽  
External Galaxies

AbstractOne of the challenges for stellar astrophysics is to reach the point at which we can undertake reliable spectral synthesis of unresolved populations in young, star-forming galaxies at high redshift. Here I summarise recent studies of massive stars in the Galaxy and Magellanic Clouds, which span a range of metallicities commensurate with those in high-redshift systems, thus providing an excellent laboratory in which to study the role of environment on stellar evolution. I also give an overview of observations of luminous supergiants in external galaxies out to a remarkable 6.7 Mpc, in which we can exploit our understanding of stellar evolution to study the chemistry and dynamics of the host systems.

scholarly journals The properties of early-type stars in the Magellanic Clouds

2008 ◽  
Vol 4 (S256) ◽  
pp. 325-336
Author(s):  
Christopher J. Evans
Keyword(s):  
Physical Properties ◽  
Mass Loss ◽  
Temperature Scale ◽  
Massive Stars ◽  
Magellanic Clouds ◽  
Early Type ◽  
The Past ◽  
The Galaxy ◽  
Stellar Temperature ◽  
Early Type Stars

AbstractThe past decade has witnessed impressive progress in our understanding of the physical properties of massive stars in the Magellanic Clouds, and how they compare to their cousins in the Galaxy. I summarise new results in this field, including evidence for reduced mass-loss rates and faster stellar rotational velocities in the Clouds, and their present-day compositions. I also discuss the stellar temperature scale, emphasizing its dependence on metallicity across the entire upper-part of the Hertzsprung-Russell diagram.

scholarly journals Diffraction Limited Near Infrared Imaging of the Central Parsec of the Galaxy

1994 ◽  
Vol 158 ◽  
pp. 379-381
Author(s):  
A. Eckart ◽  
R. Genzel ◽  
R. Hofmann ◽  
B.J. Sams ◽  
L.E. Tacconi-Garman
Keyword(s):  
Near Infrared ◽  
Infrared Imaging ◽  
Core Radius ◽  
The Galaxy ◽  
K 13 ◽  
Sgr A ◽  
Central Parsec ◽  
Stellar Sources ◽  
Stellar Density ◽  
Source Number

We present deep 1.6 and 2.2 μm images of the central parsec of the Galaxy at a resolution of 0.15″. Most of the flux in earlier seeing limited images comes from about 340 unresolved stellar sources with K≤14. The IRS 16 and 13 complexes are resolved into about two dozen and half a dozen sources, a number of which are probably luminous hot stars. We confirm the presence of a blue near infrared object (K≈13) at the position of the compact radio source Sgr A∗. The spatial centroid of the source number distribution is consistent with the position of Sgr A∗ but not with a position in the IRS 16 complex. The stellar surface density in the central 10″ is very well fitted by an isothermal cluster model with a well defined core radius. The derived core radius of all 340 sources is 0.15±0.05 pc. The central stellar density is a few times 107 M⊙ pc−3. Buildup of massive stars by merging of lower mass stars and collisional disruption of giant atmospheres are very probable processes in the central 0.2 pc.

scholarly journals Structure of Neighboring Superclusters: A Quantitative Analysis

1983 ◽  
Vol 104 ◽  
pp. 265-271 ◽  
Author(s):  
J. Einasto ◽  
A. Klypin ◽  
S. Shandarin
Keyword(s):  
Quantitative Analysis ◽  
Numerical Methods ◽  
Correlation Analysis ◽  
Quantitative Method ◽  
Galaxy Distribution ◽  
The Galaxy

So far the galaxy correlation analysis was the only quantitative method used to describe the distribution of galaxies in space. Here we consider other numerical methods to treat impersonally various aspects of the galaxy distribution.

scholarly journals THE HIGH-DENSITY IONIZED GAS IN THE CENTRAL PARSEC OF THE GALAXY

2010 ◽  
Vol 723 (2) ◽  
pp. 1097-1109 ◽  
Author(s):  
Jun-Hui Zhao ◽  
Ray Blundell ◽  
James M. Moran ◽  
Dennis Downes ◽  
Karl F. Schuster ◽  
...  
Keyword(s):  
High Density ◽  
Ionized Gas ◽  
The Galaxy ◽  
Central Parsec

scholarly journals The magnetic field in the central parsec of the Galaxy

2018 ◽  
Vol 476 (1) ◽  
pp. 235-245 ◽  
Author(s):  
P F Roche ◽  
E Lopez-Rodriguez ◽  
C M Telesco ◽  
R Schödel ◽  
C Packham
Keyword(s):  
Magnetic Field ◽  
The Galaxy ◽  
Central Parsec ◽  
The Magnetic Field
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