Submillimetre observations of galaxies – I. First results

Clements, D. L.; Andreani, P.; Chase, S. T.

doi:10.1093/mnras/261.2.299

Cited by 19 publications

(14 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“… References: a, Chini et al (1986); b, Kruegel et al (1988); c, Eales et al (1989); d, Carico et al (1992); e, Clements, Andreani & Chase (1993); f, Rigopoulou, Lawrence & Rowan‐Robinson (1996); g, Benford et al (1999); h, Frayer et al (1999); i, Haas et al (2000); j, Dunne & Eales (2001); k, Klaas et al (2001); l, this work; m, Calzetti et al (2000); n, Spinoglio, Andreani & Malkan (2002); o, Andreani & Franceschini (1996); p, Siebenmorgen, Kruegel & Chini (1999). …”

Section: The Samplementioning

confidence: 90%

Cold and warm dust along a merging galaxy sequence

Xilouris

Georgakakis

Misiriotis

et al. 2004

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

We investigate the cold and warm dust properties during galaxy interactions using a merging galaxy sample ordered into a chronological sequence from pre- to post-mergers. Our sample comprises a total of 29 merging systems selected to have far-infrared and sub-millimeter observations. The sub-millimeter data are mainly culled from the literature while for 5 galaxies (NGC 3597, NGC 3690, NGC 6090, NGC 6670 and NGC 7252) the sub-millimeter observations are presented here for the first time. We use the 100-to-850 micron flux density ratio, f_{100}/f_{850}, as a proxy to the mass fraction of the warm and the cold dust in these systems. We find evidence for an increase in f_{100}/f_{850} along the merging sequence from early to advanced mergers and interpret this trend as an increase of the warm relative to the cold dust mass. We argue that the two key parameters affecting the f_{100}/f_{850} flux ratio is the star-formation rate and the dust content of individual systems relative to the stars. Using a sophisticated model for the absorption and re-emission of the stellar UV radiation by dust we show that these parameters can indeed explain both the increase and the observed scatter in the f_{100}/f_{850} along the merging galaxy sequence. We also discuss our results under the hypothesis that elliptical galaxies are formed via disc galaxy mergers.Comment: Accepted for publication in MNRA

show abstract

Section: The Samplementioning

confidence: 90%

Cold and warm dust along a merging galaxy sequence

Xilouris

Georgakakis

Misiriotis

et al. 2004

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

show abstract

“…This shows that there is a large and diffuse component of dust (> 70 per cent in mass) that is not associated with the molecular ring. It is interesting to note that an extended dust distribution may be the reason why some millimetre and submm observations (Eales, Wynn-Williams & Duncan 1989;Clements et al 1993) have failed to detect cold dust, because of the small size of of the bolometers used compared to the extent of the dust (Clements et al 1993).…”

Section: Bottom-left)mentioning

confidence: 99%

SCUBA imaging of the NGC 7331 dust ring

Bianchi¹,

Alton²,

Davies³

et al. 1998

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

We present observations of the spiral galaxy NGC 7331 using the Submillimetre Common User Bolometer Array (SCUBA) on the James Clark Maxwell Telescope. We have detected a dust ring of 45 arcsec radius (3.3 kpc) at wavelengths of 450 and 850 μm. The dust ring is in good correspondence with other observations of the ring in the mid‐infrared (MIR), CO and radio continuum, suggesting that the observed dust is associated with molecular gas and star formation. A B − K colour map shows an analogous ring structure with an asymmetry about the major axis, consistent with the extinction being produced by a dust ring. The derived temperature of the dust lies between 16 and 31 K and the gas‐to‐dust ratio lies between 150 and 570, depending on the assumed dust emission efficiency index (β = 1.5 or 2).

show abstract

“…These studies typically find dust temperatures of $20 K, with the lowest temperature being 16 K and the highest being 33 K. There have been a few studies of larger samples. Some of these surveys have found far-infrared dust temperatures as high as 35 K (Clements, Andreani, & Chase 1993;Dunne et al 2000). Others have found temperatures between 20 and 30 K (Dunne & Eales 2001;Popescu et al 2002), and still others have found dust components as cold as 10-15 K (Chini et al 1995;Krü gel et al 1998;Siebenmorgen, Krü gel, & Chini 1999;Stickel et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Dust Temperatures in theInfrared Space ObservatoryAtlas of Bright Spiral Galaxies

Bendo¹,

Joseph²,

Wells³

et al. 2003

Astron J

View full text Add to dashboard Cite

We examine far-infrared and submillimeter spectral energy distributions for galaxies in the Infrared Space Observatory Atlas of Bright Spiral Galaxies. For the 71 galaxies where we had complete 60-180 lm data, we fitted blackbodies with À1 emissivities and average temperatures of 31 K or À2 emissivities and average temperatures of 22 K. Except for high temperatures determined in some early-type galaxies, the temperatures show no dependence on any galaxy characteristic. For the 60-850 lm range in eight galaxies, we fitted blackbodies with À1 , À2 , and À (with variable) emissivities to the data. The best results were with the À emissivities, where the temperatures were $30 K and the emissivity coefficient ranged from 0.9 to 1.9. These results produced gas-to-dust ratios that ranged from 150 to 580, which were consistent with the ratio for the Milky Way and which exhibited relatively little dispersion compared with fits with fixed emissivities.

show abstract

Submillimetre observations of galaxies – I. First results

Cited by 19 publications

References 0 publications

Cold and warm dust along a merging galaxy sequence

Cold and warm dust along a merging galaxy sequence

SCUBA imaging of the NGC 7331 dust ring

Dust Temperatures in theInfrared Space ObservatoryAtlas of Bright Spiral Galaxies

Contact Info

Product

Resources

About