Third Reference Catalogue of Bright Galaxies

Vaucouleurs, G. de; Vaucouleurs, A. de; Corwin, H. G.; Buta, Ronald J.; Paturel, G.; Fouqué, P.

doi:10.1007/978-1-4757-4363-0

Cited by 1,742 publications

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“…For objects selected from the CPG we followed the same method as Rice et al (1988) in order to obtain the L FIR /L B ratio. The distances were derived using recessional velocities given in the Third Reference Catalogue of Bright Galaxies (de Vaucouleurs et al 1991) and assuming a value of 75 km s 21 Mpc 21 for H 0 . For galaxies in the Virgo cluster we assumed a distance of 17 Mpc.…”

Section: S a M P L E S E L E C T I O Nmentioning

confidence: 99%

The distribution of far-infrared emission from edge-on galaxies

Alton¹,

Davies²,

Trewhella³

1998

Monthly Notices of the Royal Astronomical Society

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We use resolution‐enhanced IRAS images (HiRes) to study the distribution of far‐infrared (FIR) emission in 20 edge‐on, disc galaxies. Half of our sample are selected as infrared‐bright galaxies which emit most of their energy at wavelengths longer than a few μm. The remaining 10 objects are ‘normal’ (quiescent) galaxies. The distribution of FIR emission along the major axis of the infrared‐bright galaxies tends to be far more centrally concentrated than that detected in quiescent discs. Indeed, many of the infrared‐bright objects are dominated by a luminous, compact or unresolved source (<3 kpc) located in the nuclear region. It is known from emission‐line studies carried out in the past (Hα imaging and long‐slit spectroscopy) that most of the galaxies that we have selected as infrared‐bright possess an energetic outflow or ‘superwind’, which is powered by enhanced, circumnuclear star formation. We believe, therefore, that the compact FIR emission that we have detected arises from dust enclosing the central starburst. Low‐resolution radio continuum maps for the same galaxies show a striking morphological similarity to the IRAS images, confirming the presence of enhanced, recent star formation at the centre of the infrared‐bright galaxies. The wider availability of higher resolution FIR images, such as HiRes, also invites an investigation into whether edge‐on discs are resolved along the minor axis. In particular, we explore the possibility that the starburst‐driven superwinds, present within many of our infrared‐bright galaxies, are transporting dust grains out of the disc. None of the objects that we have examined (infrared‐bright or quiescent) exhibits structure that can be reliably interpreted as dust outflow. Various artefacts of the HiRes data, specifically those which produce faint, spurious structure in the vicinity of bright FIR sources, ultimately constrain the sensitivity of our images to about 1 MJy sr−1 at 60 μm. Thus, if the grains entrained in the outflow are too cold (≤15 K), we cannot expect to detect them with the present study.

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Section: S a M P L E S E L E C T I O Nmentioning

confidence: 99%

The distribution of far-infrared emission from edge-on galaxies

Alton¹,

Davies²,

Trewhella³

1998

Monthly Notices of the Royal Astronomical Society

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“…Optical observations show a galaxy diameter of several arcminutes (see Table 1), although its location makes it dif®cult to determine exact values (for a detailed discussion see Freeman et al 1977). For the same reason the galaxy's morphological type (e.g., SAS3;de Vaucouleurs et al 1991) remains somewhat uncertain.…”

Section: Introductionmentioning

confidence: 99%

Large-scale Hi structure of the Circinus galaxy

Jones¹,

Koribalski²,

Elmouttie³

et al. 1999

Monthly Notices of the Royal Astronomical Society

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HI observations with the Australia Telescope Compact Array (ATCA) are used to study the neutral gas distribution and kinematics of the Circinus galaxy. One of the most outstanding features of Circinus is its enormous size (at least 80 arcmin or nearly 100 kpc, assuming a distance of 4 Mpc) revealing a beautiful large‐scale spiral pattern. The fit of a tilted‐ring model to the velocity field reveals a strong kinematic warp of the outer spiral arms. The inner region (radius 250 arcsec or 5 kpc) contains a highly elongated structure with non‐circular motions, suggesting that Circinus is a barred spiral galaxy. At the centre of Circinus there is a 50‐arcsec or 1‐kpc‐radius HI ring or disc rotating with a speed of at least 200 km s‐1.

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“…Here we present the second results of this study, with the H 2 1±0 S(1) image of the Seyfert nucleus of NGC 3227 and a similar but more tentative result on NGC 4151. NGC 3227 is classi®ed as an SABa pec (de Vaucouleurs et al 1991) and is involved in an interaction with the nearby E2 galaxy NGC 3226, which is about 2.2 arcmin to the north-west. NGC 3227 is inclined at 568 to the plane of the sky and its major axis lies at PA of 158 ± (Mundell et al 1995b).…”

Section: Introductionmentioning

confidence: 99%

Excited molecular hydrogen around the Seyfert nuclei of NGC 3227 and 4151

Fernandez

Holloway

Meaburn

et al. 1999

Monthly Notices of the Royal Astronomical Society

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High‐resolution images of the nuclear regions of the Seyfert galaxies NGC 3227 and 4151 have been obtained in the H2 1‐0 S(1) emission line (rest λ = 2.1218 μ m) with the IRCAM3 camera on the 3.8‐m UKIRT telescope. A 2" elongation of the photoexcited H2 is observed in NGC 3227 that is coincident with the optical nucleus. Combined with other observations, this indicates the presence of a molecular disc surrounding the active nucleus with the interior being photoexcited. A 2 × 2.5 arcsec2 ring of excited H2 centred on the nucleus is partially observed in NGC 4151. This is believed to be part of a circumnuclear torus that contains ionized, atomic and molecular gas in an onion‐skin structure.

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Third Reference Catalogue of Bright Galaxies

Cited by 1,742 publications

References 0 publications

The distribution of far-infrared emission from edge-on galaxies

The distribution of far-infrared emission from edge-on galaxies

Large-scale Hi structure of the Circinus galaxy

Excited molecular hydrogen around the Seyfert nuclei of NGC 3227 and 4151

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