The pattern speed of the Galactic bulge

2007 ◽  
pp. 165-174 ◽  
Author(s):  
Agris J. Kalnajs
Keyword(s):  
Galactic Bulge ◽  
Pattern Speed

New VIRAC proper motion maps show signature of galactic boxy/peanut bulge

2019 ◽  
Vol 14 (S353) ◽  
pp. 29-30
Author(s):  
Jonathan P. Clarke ◽  
Christopher Wegg ◽  
Ortwin Gerhard ◽  
Leigh C. Smith ◽  
Phil W. Lucas ◽  
...  
Keyword(s):  
Proper Motion ◽  
Dynamical Model ◽  
Line Of Sight ◽  
Selection Function ◽  
Kinematic Structure ◽  
Proper Motions ◽  
Galactic Bulge ◽  
Bulge Region ◽  
Pattern Speed ◽  
Red Clump

AbstractWe have derived absolute proper motions of stars in the Galactic bulge region combining the VVV InfraRed Astrometric Catalogue (VIRAC) and Gaia. We use the proper motions to study the kinematic structure of the bulge both integrated along the line-of-sight and in magnitude intervals using red clump stars as standard candles. In parallel we compare to a made-to-measure barred dynamical model, folding in the VIRAC selection function, to understand and interpret the structures that we observe. The barred dynamical model, which contains a boxy/peanut bulge, and has a pattern speed of 37.5 kms−1 kpc−1, is able to reproduce all structures impressively well.

Metallicity of Red Giants in the Galactic Bulge from Near-Infrared Spectroscopy

2000 ◽  
Vol 120 (2) ◽  
pp. 833-844 ◽  
Author(s):  
Solange V. Ramírez ◽  
Andrew W. Stephens ◽  
Jay A. Frogel ◽  
D. L. DePoy
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Red Giants ◽  
Galactic Bulge

The Metallicity and Reddening of Stars in the Inner Galactic Bulge

1999 ◽  
Vol 117 (5) ◽  
pp. 2296-2307 ◽  
Author(s):  
Jay A. Frogel ◽  
Glenn P. Tiede ◽  
Leslie E. Kuchinski
Keyword(s):  
Galactic Bulge

scholarly journals Erratum: Comparing the galactic bulge and galactic disk millisecond pulsars

2021 ◽  
Vol 2021 (07) ◽  
pp. E01
Author(s):  
Harrison Ploeg ◽  
Chris Gordon ◽  
Roland Crocker ◽  
Oscar Macias
Keyword(s):  
Galactic Disk ◽  
Galactic Bulge ◽  
Millisecond Pulsars

scholarly journals The Age of Old Galactic Populations

1998 ◽  
Vol 11 (1) ◽  
pp. 560-561
Author(s):  
M. Grenon
Keyword(s):  
High Velocity ◽  
Radial Velocities ◽  
Thick Disk ◽  
Early Evolution ◽  
Galactic Bulge ◽  
Colour Class ◽  
The Galaxy ◽  
Nearby Stars

As a preparation to the HIPPARCOS mission, a large observing programme on NLTT stars (propermotion > 0.18 ″/yr) was started in Genevaphotometry. The original programme consists of 10047 stars brighter than mR = 11.5, or mR = 12.5 if of colour class m. Among them, 7813 targets could be included in the HIPPARCOS programme, selected according to their observability and internal priorities in favour of large parallaxe stars (photometric distances < 100 pc) and high-velocity stars. The bulk of new nearby, halo, mild-metal poor and SMR stars in the HIP Catalogue originates from this proposal (N° 139). No less than 208 new nearby stars with π ≥ 40 mas were discovered south of δ +10°, the closest has π(HIP)= 182 mas. Radial velocities were obtained with CORAVEL at OHP and ESO. Most aspects of the early evolution of the Galaxy may be addressed with this sample. Here we discuss, as examples, the ages of the thick disk and of the galactic bulge.

The MACHO Project Sample of Galactic Bulge High‐Amplitude δ Scuti Stars: Pulsation Behavior and Stellar Properties

2000 ◽  
Vol 536 (2) ◽  
pp. 798-815 ◽  
Author(s):  
C. Alcock ◽  
R. A. Allsman ◽  
D. R. Alves ◽  
T. S. Axelrod ◽  
A. C. Becker ◽  
...  
Keyword(s):  
High Amplitude ◽  
Galactic Bulge ◽  
Stellar Properties ◽  
Scuti Stars ◽  
Δ Scuti Stars

scholarly journals Galactic bulge giants: probing stellar and galactic evolution

2010 ◽  
Vol 517 ◽  
pp. A44 ◽  
Author(s):  
S. Uttenthaler ◽  
M. Stute ◽  
R. Sahai ◽  
J. A. D. L. Blommaert ◽  
M. Schultheis ◽  
...  
Keyword(s):  
Galactic Evolution ◽  
Galactic Bulge

Do galactic bulge X-ray sources evolve into millisecond pulsars?

Nature ◽  
1983 ◽  
Vol 301 (5897) ◽  
pp. 222-223 ◽  
Author(s):  
A. C. Fabian ◽  
J. E. Pringle ◽  
F. Verbunt ◽  
R. A. Wade
Keyword(s):  
Galactic Bulge ◽  
Millisecond Pulsars ◽  
X Ray
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