English
Related papers

Related papers: The PN.S Elliptical Galaxy Survey: Data Reduction,…

200 papers

We have obtained two-dimensional velocity fields of the dwarf spiral galaxy NGC 2976 in Halpha and CO. The high spatial (~75 pc) and spectral (13 km/s and 2 km/s, respectively) resolution of these observations, along with our multicolor…

Astrophysics · Physics 2009-11-10 Joshua D. Simon , Alberto D. Bolatto , Adam Leroy , Leo Blitz

NGC 5128 is a well-studied elliptical galaxy with an excellent kinematic data set for planetary nebulae which has been modelled up till now only by solving the Jeans equation for spherical systems. As a first approximation beyond spherical…

Astrophysics · Physics 2009-11-13 Ewa L. Lokas

Precise radial velocity measurements from HIRES on the Keck I telescope are presented for 40 stars in the outer halo globular cluster NGC 2419. These data are used to probe the cluster's stellar mass function and search for the presence of…

Astrophysics of Galaxies · Physics 2015-05-13 H. Baumgardt , P. Cote , M. Hilker , M. Rejkuba , S. Mieske , S. G. Djorgovski , P. Stetson

We present observations proving the close binary nature of the central stars belonging to the planetary nebulae (PNe) NGC 6326 and NGC 6778. Photometric monitoring reveals irradiated lightcurves with orbital periods of 0.372 and 0.1534…

Solar and Stellar Astrophysics · Physics 2015-05-28 B. Miszalski , D. Jones , P. Rodríguez-Gil , H. M. J. Boffin , R. L. M. Corradi , M. Santander-García

We have obtained deep, long-slit spectroscopy along the major axis of NGC 6166, the cD galaxy in the cluster Abell 2199, in order to measure the kinematics of intracluster starlight at large radii. The velocity dispersion rises beyond a few…

ABRIDGED: 2D spectroscopic MUSE data for the whole extent of NGC3132 have been reduced and analised. The dust extinction, electron densities and temperatures of the ionised gas and abundances were determined. The nebula presents a complex…

Solar and Stellar Astrophysics · Physics 2020-02-05 Ana Monreal-Ibero , Jeremy R. Walsh

The catalogue of protoplanetary nebulae by Vickers et al. has been supplemented with the line-of-sight velocities and proper motions of their central stars from the literature. Based on an exponential density distribution, we have estimated…

Astrophysics of Galaxies · Physics 2017-06-01 V. V. Bobylev , A. T. Bajkova

We present a comprehensive analysis (photometric and kinematical) of poorly studied open cluster NGC 4337 using 2MASS, WISE, APASS, and Gaia~DR2 database. By determining the membership probabilities of stars, we identified 624 most probable…

We present the stellar and gaseous kinematics of an Sb galaxy, NGC 3223, with the aim of determining the vertical and radial stellar velocity dispersion as a function of radius, which can help to constrain disk heating theories. Together…

Astrophysics of Galaxies · Physics 2015-04-01 G. Gentile , C. Tydtgat , M. Baes , G. De Geyter , M. Koleva , G. W. Angus , W. J. G. de Blok , W. Saftly , S. Viaene

We present three-integral dynamical models for the three Local Group dwarf elliptical galaxies: NGC147, NGC185, and NGC205. It is the first time models are constructed for the Local Group dEs that allow for the presence of dark matter at…

Astrophysics · Physics 2009-11-11 S. De Rijcke , P. Prugniel , F. Simien , H. Dejonghe

NGC 4494 is one of several intermediate-luminosity elliptical galaxies inferred to have an unusually diffuse dark matter halo. We use the chi^2-made-to-measure particle code NMAGIC to construct axisymmetric models of NGC 4494 from…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Lucia Morganti , Ortwin Gerhard , Lodovico Coccato , Inma Martinez-Valpuesta , Magda Arnaboldi

An iterative method for reconstructing mass distribution in spiral galaxies using a thin disk approximation is developed. As an example, the method is applied to galaxy NGC 4736; its rotation curve does not allow one to employ a model with…

Astrophysics · Physics 2009-09-29 Joanna Jalocha , Lukasz Bratek , Marek Kutschera

We have obtained narrow-band images and high-resolution spectra of the planetary nebulae NGC 6337, He 2-186, and K 4-47, with the aim of investigating the relation between their main morphological components and several low-ionization…

A dynamical characterization of dark matter dominated dwarf galaxies from their observed effects on galactic disks (i.e. Galactoseismology) has remained an elusive goal. Here, we present preliminary results from spectroscopic observations…

We report on the radial velocity measurements of 18 globular clusters and one dE galaxy in the field of the giant elliptical galaxy NGC 1399, the dominant galaxy of the Fornax cluster. We present also the radial velocity measurements of…

Astrophysics · Physics 2009-10-30 Dante Minniti , Markus Kissler-Patig , Paul Goudfrooij , Georges Meylan

This paper presents accurate homogeneous positions, velocities and other pertinent properties for 460 newly discovered and 169 previously known planetary nebulae (PNe) in the central 25 sq deg bar region of the Large Magellanic Cloud (LMC).…

Astrophysics · Physics 2008-11-26 Warren A. Reid , Quentin A. Parker

We present HST Planetary Camera V and I~band images of the central region of the peculiar giant elliptical galaxy NGC 1316. The inner profile is well fit by a nonisothermal core model with a core radius of 0.41" +/- 0.02" (34 pc). At an…

Photometric data from the literature is combined with triaxial mass models to derive variation in the intrinsic shapes of the light distribution of elliptical galaxies NGC 720, 2768 and 3605. The inferred shape variation in given by a…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 D. K. Chakraborty , A. K. Diwakar , S. K. Pandey

We present a kinematic analysis of the globular cluster (GC) system of the giant elliptical galaxy NGC 4365 and find several distinct kinematic substructures. This analysis is carried out using radial velocities for 269 GCs, obtained with…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Christina Blom , Duncan A. Forbes , Jean P. Brodie , Caroline Foster , Aaron J. Romanowsky , Lee R. Spitler , Jay Strader

Images in the $H\alpha$ emission line are presented for 35 nearby objects observed with the 6-m BTA telescope. Three of them, NGC 3377, NGC 3384, and NGC 3390, are bright E and S0 galaxies, one is an edge-on Sd galaxy UGC 7321, two are…

Astrophysics of Galaxies · Physics 2015-12-17 I. D. Karachentsev , S. S. Kaisin , E. I. Kaisina
‹ Prev 1 4 5 6 7 8 10 Next ›