IRAS observations of an optically selected sample of interacting galaxies

Bushouse, H.; Werner, M. W.; Lamb, S. A.

doi:10.1086/166907

Cited by 108 publications

(109 citation statements)

References 27 publications

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“…Far-infrared (42-122/xm) luminosities derived from IRAS data for the interacting systems again cover a wide range, showing considerable overlap with the luminosities of isolated spirals (Bushouse, Lamb and Werner 1988). However, the median far-infrared luminosity of the interacting galaxies is about a factor of four greater than that of a sample of isolated spiral galaxies.…”

Section: Far-infrared Propertiesmentioning

confidence: 87%

“…First, there are no isolated galaxies, of any optical luminosity, with LI&/LB much greater than 10, whereas fully one-third of the interacting systems have LIR/LB ratios above this level and several have LIR/LB > 30 (see figure 6 in Bushouse, Lamb and Werner 1988). Therefore it is likely that galaxy-galaxy interactions are a necessary requirement for significant enhancements in infrared luminosity.…”

Section: L\^/lbmentioning

confidence: 99%

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A Multiwavelength Survey of Interacting Galaxies

Bushouse

Lamb

et al. 1990

International Astronomical Union Colloquium

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Galaxy-galaxy collisions are known to produce drastic changes in morphology and, in many cases, enhance the level of star formation activity in galaxies. In order to better quantify the effects that interactions have on the star formation characteristics of galaxies we have undertaken a multiwavelength survey of a large sample of interacting disk-type galaxies. The sample is optically-selected, the inclusion of systems having been based upon the presence of unusual morphological features—such as tidal tails, plumes, rings, warped disks—suggestive of tidal interaction. The sample is composed of about 115 systems, most of which are spiral-spiral pairs, with a few spiral-elliptical pairs and a few merging systems (see Bushouse 1986 for more details of the sample selection). This sample has now been studied in the optical, infrared, and radio regimes, including optical spectra and Ha images, near-infrared photometry and imaging, far-infrared photometry, HI 21cm emission-line measurements, VLA 20cm maps, and CO emission-line measurements. This paper presents an overview and comparison of the results of the optical, infrared and CO surveys. With these data we can compare the far-infrared and CO properties of the galaxies with the classic optical and radio indicators of star formation activity and thereby determine what, if any, relationships exist between star formation activity and the far-infrared and CO properties of the galaxies.

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Section: Far-infrared Propertiesmentioning

confidence: 87%

Section: L\^/lbmentioning

confidence: 99%

A Multiwavelength Survey of Interacting Galaxies

Bushouse

Lamb

et al. 1990

International Astronomical Union Colloquium

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“…i) Star-Formation Rates in "Known" Interacting Galaxies The star-formation rates in pairs of galaxies have been compared to those in isolated galaxies using H a luminosities and equivalent-widths, mid-and far-IR luminosities, and nonthermal radio powers (Bushouse 1986(Bushouse ,1987Bushouse, Lamb, and Werner 1987;Cutri and McAlary 1985;Hummel 1981;Keel et al 1985;Kennicutt et al 1987;Sulentic 1976Sulentic ,1990Stocke 1978). Taken together, these many studies lead to the following conclusions (see Kennicutt's review for more details): 1.…”

Section: Evidence Linking Interactions T O Nuclear Activity a Inmentioning

confidence: 99%

“…Samples of "strongly interacting" galaxies (usually selected from the Arp Atlas on the basis of morpholgical evidence that they are undergoing an interaction) have been investigated in the IR, optical, and radio by Bushouse (1986Bushouse ( ,1987, Bushouse, Lamb, and Werner (1988), Carter et al (1988), Heckman (1983), Hickson et al (1989), Joseph and Wright (1985), Joseph et al (1984), Keel et al (1985), Kennicutt et al (1987), Larson and Tinsley (1978), Mathews (1984), andSulentic (1976). These represent a more heterogeneous set of galaxies than those in the "pairs" sample (and present a greater challenge in properly constructing a comparison sample).…”

Section: Evidence Linking Interactions T O Nuclear Activity a Inmentioning

confidence: 99%

Galaxy Interactions and the Stimulation of Nuclear Activity

Heckman

1990

International Astronomical Union Colloquium

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The idea that interactions between galaxies can lead to enhanced galactic activity has a long and noble lineage. Since the early days of Baade and Minkowski (1954), through the seminal paper of Toomre and Toomre (1977) with its “stoking the furnace” imagery, to the similarly colorful and influential “feeding the monster” paper of Gunn (1979), and the landmark work by Larson and Tinsley (1978), this idea was elaborated upon and generalized. The pace of development of this hypothesis has accelerated greatly on both the observational and theoretical fronts during the 1980’s, due in part to a growing perception that the AGN phenomenon could only be understood when the role of the environment in triggering or nurturing the activity was understood (cf. Balick and Heckman 1982). In recent years, the impact of the extragalactic IRAS database (on the observational side) and of the new generation of supercomputers and innovative software (on the numerical side) have led to an almost explosive growth in the number of papers written about this subject.

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“…These plots show that while the brightest IR emitting systems are interacting, many i n teracting systems are not IR bright. From Bushouse, Lamb & W erner 1988 [8].…”

Section: Introductionmentioning

confidence: 99%

Mergers, interactions, and the fueling of starbursts

Hibbard¹

1997

AIP Conference Proceedings

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Abstract. The most active starbursts are found in galaxies with the highest IR luminosities, with peak star formation rates and e ciencies that are over an order of magnitude higher than in normal disk systems. These systems are almost exclusively on-going mergers. In this review I explore the conditions needed for interactions to experience such a phase by comparing two systems at similar stages of merging but quite di erent IR luminosities: NGC 4038/9 and Arp 299. These observations show that the most intense starbursts occur at the sites with the highest gas densities, which is a general result for IR luminous mergers. Observations and theory both suggest that the strength of the merger induced starburst depends on the internal structure of the progenitors, the amount and distribution of the gas, and the violence of the interaction. In particular, interactions involving progenitors with dense bulges, gas-rich disks, and/or a retrograde spin are expected to preferentially lead to large amounts of gaseous dissipation, although the interplay b e t w een these parameters is unknown. A major outstanding question is how the e ects of feedback alter these conclusions.

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IRAS observations of an optically selected sample of interacting galaxies

Cited by 108 publications

References 27 publications

A Multiwavelength Survey of Interacting Galaxies

A Multiwavelength Survey of Interacting Galaxies

Galaxy Interactions and the Stimulation of Nuclear Activity

Mergers, interactions, and the fueling of starbursts

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