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While galactic bulges may contain no significant dust of their own, the dust within galaxy discs can strongly attenuate the light from their embedded bulges. Furthermore, such dust inhibits the ability of observationally-determined…

天体物理学 · 物理学 2012-04-26 Alister W. Graham , C. C. Worley

We investigate which conditions of dust attenuation and stellar populations allow models of dusty, continuously star-forming, bulge-less disk galaxies at 0.8<z<3.2 to meet the different colour selection criteria of high-z ``red'' galaxies…

天体物理学 · 物理学 2009-11-13 D. Pierini , C. Maraston , K. D. Gordon , A. N. Witt

We present corrections for the change in the apparent scalelengths, central surface brightnesses and axis ratios due to the presence of dust in pure disk galaxies, as a function of inclination, central face-on opacity in the B-band…

天体物理学 · 物理学 2009-11-11 C. Möllenhoff , C. C. Popescu , R. J. Tuffs

Dust in galaxies can be mapped by either the FIR/sub-mm emission, the optical or infrared reddening of starlight, or the extinction of a known background source. We compare two dust extinction measurements for a set of fifteen sections in…

Observed ultraviolet (UV) colours of nearby disc galaxies show a reddening relative to their expected intrinsic colours. Since the 2175 \AA bump found in the Milky Way's dust extinction law blues the UV colours, it might suggest that dust…

天体物理学 · 物理学 2007-05-23 Akio K. Inoue

Dust attenuation of an inclined galaxy can cause additional asymmetries in observations, even if the galaxy has a perfectly symmetric structure. {Taking advantage of the integral field spectroscopic data observed by the SDSS-IV MaNGA…

星系天体物理 · 物理学 2021-05-05 Fang-Ting Yuan , Jiafeng Lu , Shiyin Shen , Médéric Boquien

We study the correlations with inclination of H-band disk and bulge structural parameters and I-H colour profiles for a sample of 154 spiral galaxies, in order to detect possible effects due to internal extinction by dust. The selection of…

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

A sample of local galaxies for which far infrared and uv fluxes are available is used to estimate the characteristic dust extinction in galaxies and to test whether standard dust properties are plausible. Assuming galaxies can be…

天体物理学 · 物理学 2009-11-07 Michael Rowan-Robinson

To investigate the distribution of dust in Sb and Sc galaxies we have analyzed near-infrared and optical surface photometry for an unbiased sample of 37 galaxies. Since light in the $K$-band is very little affected by extinction by dust,…

天体物理学 · 物理学 2007-05-23 R. F. Peletier , E. A. Valentijn , A. F. M. Moorwood , W. Freudling , J. H. Knapen , J. E. Beckman

The stellar and dust content of spiral galaxies as function of radius has been investigated using near-infrared and optical broadband surface photometry of 86 face-on spiral galaxies. Colors of galaxies correlate with the azimuthally…

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

We explore the effects of dust in cosmologically distributed intervening galaxies on the high redshift universe using a generalised model where dust content evolves with cosmic time. The absorbing galaxies are modelled as exponential disks…

天体物理学 · 物理学 2009-10-31 Frank Masci , Rachel Webster

We analyse V and H-band surface photometry of a sample of 18 Sb-Sd galaxies. Combining high resolution HST images with ground-based NIR observations, we extract photometric profiles, which cover the whole disk and provide the highest…

宇宙学与河外天体物理 · 物理学 2009-11-13 Katia Ganda , Reynier Peletier , Marc Balcells , Jesus Falcon-Barroso

We present JHK surface photometry of 15 highly inclined, late-type (Sab-Sc) spirals and investigate the quantitative effects of dust extinction. Using the (J - H, H - K) two-color diagram, we compare the color changes along the minor axis…

天体物理学 · 物理学 2009-10-28 Leslie E. Kuchinski , Donald M. Terndrup

We compare 850um SCUBA images of NGC 891 with the corresponding V-band optical depth predicted from radiation transfer simulations. These two tracers of dust show a very similar distribution along the minor axis and a reasonable agreement…

天体物理学 · 物理学 2007-05-23 P. B. Alton , E. M. Xilouris , S. Bianchi , J. Davies , N. Kylafis

In this first paper in a series we present a study of the global dust emission distribution in nearby edge-on spiral galaxies. Our sample consists of 16 angularly large and 13 less spatially resolved galaxies selected from the DustPedia…

Aims: I have analyzed a sample of seven nearby edge-on galaxies observed in the V and K'-band, in order to infer the properties of the dust distribution. Methods: A radiative transfer model, including scattering, have been used to decompose…

天体物理学 · 物理学 2009-11-13 Simone Bianchi

We present VLT/VIMOS IFU observations of an occulting galaxy pair previously discovered in HST observations. The foreground galaxy is a low-inclination spiral disk, which causes clear attenuation features seen against the bright bulge and…

宇宙学与河外天体物理 · 物理学 2015-06-15 B. W. Holwerda , T. Boker , J. J. Dalcanton , W. C. Keel , R. S. de Jong

The opacity of spiral galaxies is examined by modelling the dust and stellar content of individual galaxies. The model is applied to five late-type spiral galaxies (NGC 4013, IC 2531, UGC 1082, NGC 5529 and NGC 5907). Having analyzed a…

天体物理学 · 物理学 2009-09-25 E. M. Xilouris , Y. I. Byun , N. D. Kylafis , E. V. Paleologou , J. Papamastorakis

Dust extinction can be determined from the number of distant field galaxies seen through a spiral disk. To calibrate this number for the crowding and confusion introduced by the foreground image, Gonzalez et al.(1998) and Holwerda et al.…

天体物理学 · 物理学 2009-11-10 B. W. Holwerda , R. A. Gonzalez , Ronald J. Allen , P. C. van der Kruit

Rest-frame far-ultraviolet (FUV) luminosities form the `backbone' of our understanding of star formation at all cosmic epochs. FUV luminosities are typically corrected for dust by assuming that extinction indicators which have been…

天体物理学 · 物理学 2009-11-07 Eric F. Bell
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