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相关论文: Near-infrared bulge-disc correlations of lenticula…

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We investigate the correlation between the bulge effective radius (r_e) and disk scale length (r_d), in the near-infrared K band for lenticular galaxies in the field and in clusters. We find markedly different relations between the two…

天体物理学 · 物理学 2009-11-13 Sudhanshu Barway , Ajit Kembhavi , Yogesh Wadadekar , C. D. Ravikumar , Y. D. Mayya

We investigate the scaling relations of bulge and disk structural parameters for a sample of 108 disk galaxies.Structural parameters are obtained from 2D bulge/disk decomposition of H-band images.Bulges are modelled with a generalized…

天体物理学 · 物理学 2009-11-10 L. K. Hunt , D. Pierini , C. Giovanardi

We investigate bulge and disk scaling relations using a volume-corrected sample of early- to intermediate-type disk galaxies in which, importantly, the biasing flux from additional nuclear components has been modeled and removed. Structural…

天体物理学 · 物理学 2011-02-11 M. Balcells , A. W. Graham , R. F. Peletier

We analyzed several basic correlations between structural parameters of galaxies. The data were taken from various samples in different passbands which are available in the literature. We discuss disc scaling relations as well as some…

星系天体物理 · 物理学 2015-06-19 A. V. Mosenkov , N. Ya. Sotnikova , V. P. Reshetnikov

Following from our recent work, we present here a detailed structural analysis of a representative sample of nearby spiral and early-type galaxies taken from the KINGFISH/ SINGS survey. The photometric parameters of bulges are obtained from…

星系天体物理 · 物理学 2021-07-12 Bogdan A. Pastrav

Using a two-dimensional galaxy image decomposition technique, we extract global bulge and disk parameters for a complete sample of early type disk galaxies in the near infrared K band. We find significant correlation of the bulge parameter…

天体物理学 · 物理学 2009-10-31 Habib G. Khosroshahi , Yogesh Wadadekar , Ajit Kembhavi

The statistics of the fundamental bulge and disk parameters of galaxies and their relation to the Hubble sequence were investigated by an analysis of optical and near-infrared observations of 86 face-on spiral galaxies. The availability of…

天体物理学 · 物理学 2009-05-29 Roelof S. de Jong

We present a study of bars in lenticular galaxies based on a sample of 371 galaxies from the SDSS-DR 7 and 2MASS in optical and near-infrared bands, respectively. We found a bar in 15% of the lenticular galaxies in our sample, which is…

宇宙学与河外天体物理 · 物理学 2015-05-20 Sudhanshu Barway , Yogesh Wadadekar , Ajit K. Kembhavi

We determine the parameters of scaling relations analogous to the Fundamental Plane of elliptical galaxies for the bulges and disks of a sample of 40 spiral galaxies. To this end we derive structural parameters (scalelengths and surface…

天体物理学 · 物理学 2007-05-23 G. Moriondo , R. Giovanelli , M. Haynes

We study the photometric parameters of the bulges of galaxies of different Hubble types including ellipticals, lenticulars, early and late type spirals and early type dwarf galaxies. Analyzing the distributions of various photometric…

天体物理学 · 物理学 2009-11-11 C. D. Ravikumar , Sudhanshu Barway , Ajit Kembhavi , Bahram Mobasher , V. C. Kuriakose

We present data for a sample of 45 spiral galaxies over a range of Hubble types, imaged in the near-IR J and K bands. Parameters are calculated describing the bulge, disk and bar K-band light distributions, and we look for correlations…

天体物理学 · 物理学 2007-05-23 M. S. Seigar , P. A. James

Differential K-band luminosity functions (LFs) are presented for a complete sample of 1613 nearby bright galaxies segregated by visible morphology. The LF for late-type spirals follows a power law that rises towards low luminosities whereas…

宇宙学与河外天体物理 · 物理学 2009-08-24 Nick Devereux , S. P. Willner , M. L. N. Ashby , C. N. A. Willmer , Paul Hriljac

(Abridged) We present a morphological analysis of 17 X-ray selected clusters at z~0.25, imaged uniformly with HST WFPC2. Eight of these clusters have low X-ray luminosities (<10^{44} erg/s), while the remaining nine clusters have…

天体物理学 · 物理学 2009-11-07 Michael Balogh , Ian Smail , R. Bower , B. Ziegler , G. Smith , R. Davies , A. Gaztelu , J. -P. Kneib , H. Ebeling

(Abridged) A variety of formation scenarios was proposed to explain the diversity of properties observed in bulges. Studying their intrinsic shape can help in constraining the dominant mechanism at the epochs of their assembly. The…

天体物理学 · 物理学 2015-05-13 J. Mendez-Abreu , J. A. L. Aguerri , E. M. Corsini , E. Simonneau

We report the existence of a single plane in the space of global photometric parameters describing elliptical galaxies and the bulges of early type spiral galaxies. The three parameters which define the plane are obtained by fitting the…

天体物理学 · 物理学 2009-10-31 Habib G. Khosroshahi , Yogesh Wadadekar , Ajit Kembhavi , Bahram Mobasher

We measure the scaling relations of the bulges and disks of the EFIGI galaxies in the nearby Universe versus morphology, using bulge and disk decomposition of SDSS gri images with SourceXtractor++. The Kormendy (1977) relation between…

星系天体物理 · 物理学 2024-01-03 Louis Quilley , Valérie de Lapparent

We investigate the environmental dependence of star formation and the morphology of galaxies in the local universe based on a volume-limited sample (0.030<z<0.065 and M_r<M_r^*+2) constructed from the data of the Sloan Digital Sky Survey.…

天体物理学 · 物理学 2009-11-10 Masayuki Tanaka , Tomotsugu Goto , Sadanori Okamura , Kazuhiro Shimasaku , Jon Brinkman

We present near-infrared imaging of a sample of 57 relatively large, Northern spiral galaxies with low inclination. After describing the selection criteria and some of the basic properties of the sample, we give a detailed description of…

天体物理学 · 物理学 2009-11-07 J. H. Knapen , R. S. de Jong , S. Stedman , D. M. Bramich

Relying on samples of disk galaxies for which a detailed photometric bulge/disk decomposition has been provided in the literature, we examine the dependence of the bulge-to-disk luminosity ratio (B/D) on the blue absolute luminosity and on…

We analyze the global structure of 34 late-type, edge-on, undisturbed, disk galaxies spanning a wide range of mass. We measure structural parameters for the galaxies using two-dimensional least-squares fitting to our $R$-band photometry.…

天体物理学 · 物理学 2008-11-26 Peter Yoachim , Julianne J. Dalcanton
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