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Related papers: Disentangling the Galaxy at low Galactic latitudes

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We present an analysis of the photometric parallaxes of stars in 21 BATC fields carried out with the National Astronomical Observatories (NAOC) 60/90 cm Schmidt Telescope in 15 intermediate-band filters from 3000 to 10000 {\AA}. In this…

Astrophysics · Physics 2009-11-11 Cuihua Du , Jun Ma , Zhenyu Wu , Xu Zhou

We analyse a sample of over 1000 stars from 32 fields imaged in the V and I bands with the Wide Field and Planetary Camera, on board of the Hubble Space Telescope. The fields are located at Galactic latitudes | b | >= 15deg and in various…

Astrophysics · Physics 2009-11-06 L. O. Kerber , S. C. Javiel , B. X. Santiago

We present the Galactic model parameters for thin disc estimated by Sloan Digital Sky Survey (SDSS) data of 14 940 stars with apparent magnitudes $16<g_{o}\leq21$ in six intermediate latitude fields in the first Galactic quadrant.…

Astrophysics · Physics 2009-11-11 S. Bilir , S. Karaali , S. Ak , E. Yaz , E. Hamzaoglu

We interpret published CCD UBVI data to deduce the stellar density distribution and metallicity distribution function in the region from 2-8 kpc from the Galactic Plane, and compare our results to several star count models. A feature of…

Astrophysics · Physics 2009-11-07 S. Karaali , S. G. Ak , S. Bilir , Y. Karatas , G. Gilmore

As part of a stellar population sampling program, a series of photometric probes at various field sizes and depths have been obtained in a low extinction window in the galactic anticentre direction. Very deep CCD frames probe the most…

Astrophysics · Physics 2007-05-23 Annie C. Robin , Michel Creze , Vijay Mohan

We report the first results of star counts carried out with the National Astronomical Observatories (NAOC) 60/90 cm Schmidt Telescope in 15 intermediate-band filters from 3000 to 10000 {\AA} in the BATC survey. We analyze a sample of over…

Astrophysics · Physics 2009-11-07 Cuihua Du , Xu Zhou , Jun Ma , Alfred B-C Chen , Yanbin Yang , Jiuli Li , Hong Wu , Zhaoji Jiang , Jiansheng Chen

Stellar photometry obtained using the Hubble Space Telescope is used to study the distributions of the number densities of stars of various ages in 12 irregular and dwarf spiral galaxies viewed edge-on. Two subsystems can be distinguished…

Astrophysics · Physics 2007-05-23 N. A. Tikhonov

We have modelled the light distribution in 10095 galaxies from the Millennium Galaxy Catalogue (MGC), providing publically available structural catalogues for a large, representative sample of galaxies in the local Universe. Three different…

Three colour photometry on CCD frames in the Special Area SpA23 provides a deep probe of the galactic disc in a low absorption window towards the anticenter. Magnitudes to better than 10% at V = 25 and B-V colour down to V = 23 have been…

Astrophysics · Physics 2011-05-23 Annie C. Robin , Michel Creze , Vijay Mohan

We use star counts from 13 deep HST fields imaged with the {\it Wide Field Camera - 2} in order to constrain the amount of dark matter in the Galaxy that can be in the form of low-mass main sequence stars or white-dwarfs. Based on the…

Astrophysics · Physics 2015-06-24 Basilio X. Santiago , Gerard Gilmore , Rebecca A. W. Elson

In an effort to more precisely define the spatial distribution of Galactic field stars, we present an analysis of the photometric parallaxes of 70,000 stars covering nearly 15 square degrees in seven Kapteyn Selected Areas. We address the…

Astrophysics · Physics 2009-11-07 M. H. Siegel , S. R. Majewski , I. N. Reid , I. B. Thompson

The results of the stellar photometry of the images ACS/WFC and WFPC2 of the HST are used to study stellar population and spatial distribution of stars in three edge-on galaxies: NGC 891, NGC 4144 and NGC 4244. The measuring of the number…

Astrophysics · Physics 2009-11-10 N. A. Tikhonov , O. A. Galazutdinova

Aims. We explore the outer Galactic disc up to a Galactocentric distance of 30 kpc to derive its parameters and measure the magnitude of its flare. Methods. We obtained the 3D density of stars of type F8V-G5V with a colour selection from…

Astrophysics of Galaxies · Physics 2014-09-05 M. Lopez-Corredoira , J. Molgo

As part of a stellar population sampling program, a series of photometric probes at various field sizes and depths have been obtained in a low extinction window in the galactic anticentre direction. Such data set strong constraints on the…

Astrophysics · Physics 2009-10-22 Annie C. Robin , Michel Creze , Vijay Mohan

The decomposition of the rotation curve of galaxies into contribution from the disc and dark halo remains uncertain and depends on the adopted mass to light ratio (M/L) of the disc. Given the vertical velocity dispersion of stars and disc…

Astrophysics of Galaxies · Physics 2018-02-13 S. Aniyan , K. C. Freeman , M. Arnaboldi , O. E. Gerhard , L. Coccato , M. Fabricius , K. Kuijken , M. Merrifield , A. A. Ponomareva

Our goal is to recover the Galactic Halo spatial density by means of field stars. To this aim, we apply a new technique to the Capodimonte Deep Field (OACDF, Alcala' et al. 2004), as a pilot study in view of the VLT Survey Telescope (VST)…

Astrophysics · Physics 2009-11-11 M. Cignoni , V. Ripepi , M. Marconi , J. M. Alcala' , M. Capaccioli , M. Pannella , R. Silvotti

In this paper, we try to find any dependence of the Galactic structural parameters with the Galactic longitude for either the thin disc or the thick disc of the Milky Way, that would indicate to possible inhomogeneities or asymmetries in…

Astrophysics · Physics 2009-11-11 A. Cabrera-Lavers , S. Bilir , S. Ak , E. Yaz , M. Lopez-Corredoira

A new method for measuring the large-scale structure of the Galactic magnetic field is presented. The Galactic magnetic field has been probed through the Galactic disk with near-infrared starlight polarimetry, however the distance to each…

Astrophysics of Galaxies · Physics 2015-06-22 Michael D. Pavel

We estimated the Galactic model parameters for a set of 36 high-latitude fields included in the currently available Data Release 5 (DR 5) of the Sloan Digital Sky Survey ({\em SDSS}), to explore their possible variation with the Galactic…

Astrophysics · Physics 2009-11-13 S. Bilir , A. Cabrera-Lavers , S. Karaali , S. Ak , E. Yaz , López-Corredoira

We report on the stellar content of the COSMOS two degree field, as derived from a rigorous star/galaxy separation approach developed for using stellar sources to define the point spread function variation map used in a study of weak galaxy…

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