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Related papers: Proper Motions in the Galactic Bulge: Plaut's Wind…

200 papers

I report on an ongoing programme of proper motion measurements in the Galactic Bulge, using HST images. As a first application, the data are used to derive the vertical gravitational acceleration on the minor axis of the Galaxy.…

Astrophysics · Physics 2007-05-23 Konrad Kuijken

Using two epochs of HST/WFPC2 images of the metal-rich globular cluster NGC 6528 we derive the proper motions of the stars and use them to separate the stars belonging to NGC 6528 from those of the Galactic bulge. The stellar sequences in…

Astrophysics · Physics 2009-11-07 Sofia Feltzing , Rachel Johnson

We present a catalog of 345,000 stars with proper motions \mu > 20 mas/yr and magnitudes r' <20, drawn from the intersection of the SDSS Data Release One and USNO-B. We first use SDSS quasars to correct the proper motions in each of the two…

Astrophysics · Physics 2010-03-01 Andrew Gould , Juna A. Kollmeier

We use Fabry-Perot absorption line imaging spectroscopy to measure radial velocities using the Ca II 8542 line in 3360 stars towards three lines of sight in the Milky Way's bar: Baade's Window and offset position at (l,b) ~ (+-5.0, -3.5).…

Astrophysics · Physics 2011-02-11 Naseem Rangwala , T. B. Williams , K. Z. Stanek

Here we present survey of proper motion stars towards the Galactic Bulge and an adjacent plane region base on VISTA-VVV data. The searching method based on cross-matching photometric Ks-band CASU catalogs. The most interesting discoveries…

Solar and Stellar Astrophysics · Physics 2013-10-16 M. Gromadzki , R. Kurtev , S. Folkes , J. C. Beamin , K. Pena Ramirez , J. Borissova , D. Pinfield , H. Jones , D. Minniti , V. D. Ivanov

Major-axis long-slit stellar kinematics was obtained for 30 edge-on spiral galaxies, 24 with a boxy/peanut-shaped (B/PS) bulge. B/PS bulges are present in >45% of highly inclined systems and much work suggests that they are the edge-on…

Astrophysics · Physics 2009-11-10 A. Chung , M. Bureau

The abundance and narrow magnitude dispersion of Red Clump (RC) stars make them a popular candidate for mapping the morphology of the bulge region of the Milky Way. Using an estimate of the RC's intrinsic luminosity function, we extracted…

Astrophysics of Galaxies · Physics 2023-08-10 Brenna Coleman , Dylan Paterson , Chris Gordon , Oscar Macias , Harrison Ploeg

The Oort constants describe the local variations of the stellar streaming field. Classically, they are determined from stellar proper motions. We discuss problems arising in this procedure. A large, hitherto overlooked, source of systematic…

Astrophysics · Physics 2009-11-07 Rob P. Olling , Walter Dehnen

Completion of the SUPERBLINK proper motion survey in the southern celestial hemisphere has turned up 170 new stars with proper motion 0.45 arcsec/yr < pm < 2.0 arcsec/yr. This fourth and final installment completes the all-sky, data-mining…

Astrophysics · Physics 2009-11-13 Sebastien Lepine

Many 3D N-body barred models of the Galaxy extending beyond the Solar circle are realised by self-consistent evolution of various bar unstable axisymmetric models. The COBE/DIRBE K-band map, corrected for extinction, is used to constrain…

Astrophysics · Physics 2009-10-26 R. Fux

The color-magnitude diagrams of $\sim 5\times 10^5$ stars obtained for 13 fields towards the Galactic bulge with the OGLE project reveal a well-defined population of bulge red clump stars. We find that the distributions of the…

Astrophysics · Physics 2009-10-22 K. Z. Stanek , M. Mateo , A. Udalski , M. Szymanski , J. Kaluzny , M. Kubiak

We have used a set of archived HST/WFPC2 exposures of the inner regions of the Crab Nebula to obtain a new measurement of the pulsar proper motion, the first after the original work of Wyckoff & Murray, more than 20 years ago. Our…

Astrophysics · Physics 2007-05-23 Patrizia A. Caraveo , Roberto P. Mignani

We present deep near-IR photometry for Galactic bulge stars in Baade's Window, $(l,b) = (1.0\deg, -3.9\deg),$ and another minor axis field at $(l,b) = (0^\circ,-6^\circ)$. We combine our data with previously published photometry and…

Astrophysics · Physics 2016-08-30 Glenn P. Tiede , Jay A. Frogel , D. M. Terndrup

We derive the stellar rotation curve of the Galaxy in the range of Galactocentric radii of R=4-16 kpc at different vertical heights from the Galactic plane of z between -2 and +2 kpc. We used the PPMXL survey, which contains the USNO-B1…

Astrophysics of Galaxies · Physics 2015-06-18 Martin Lopez-Corredoira

Multicolor photometry from the Tycho-2 and 2MASS catalogues for 11 990 OB and 30 671 K-type red giant branch stars is used to detect systematic large-scale variations of the interstellar extinction law within the nearest kiloparsec. The…

Solar and Stellar Astrophysics · Physics 2016-07-04 George Gontcharov

We combine VI photometry from OGLE-III with VVV and 2MASS measurements of E(J-K_{s}) to resolve the longstanding problem of the non-standard optical extinction toward the Galactic bulge. We show that the extinction is well-fit by the…

We report the discovery of 141 new high proper motion systems (1.0"/yr > mu >= 0.4"/yr) in the southern sky (Declination = -90 degrees to -47 degrees) brighter than UKST plate R_{59F} = 16.5 via our SuperCOSMOS-RECONS (SCR) search. When…

Astrophysics · Physics 2009-11-10 John P. Subasavage , Todd J. Henry , Nigel C. Hambly , Misty A. Brown , Wei-Chun Jao

The study of the inner region of the Milky Way's bulge is hampered by high interstellar extinction and extreme source crowding. Sensitive high angular resolution near-infrared imaging is needed to study stellar populations in such a complex…

The Lick Northern Proper Motion (NPM) program, a two-epoch (1947-1988) photographic survey of the northern two-thirds of the sky (Dec. > -23 deg), has measured absolute proper motions, on an inertial system defined by distant galaxies, for…

Astrophysics · Physics 2009-11-10 Robert B. Hanson , Arnold R. Klemola , Burton F. Jones , David G. Monet

We present wide field JHKs photometry of 16 Galactic globular clusters located towards the Galactic bulge, calibrated on the 2MASS photometric system. Differential reddening corrections and statistical field star decontamination are…

Solar and Stellar Astrophysics · Physics 2016-11-15 Roger E. Cohen , Christian Moni Bidin , Francesco Mauro , Charles Bonatto , Douglas Geisler