Erratum: “The Far‐ and Mid‐Infrared/Radio Correlations in the
                    <i>Spitzer</i>
                    Extragalactic First Look Survey” (ApJS, 154, 147 [2004])

Appleton, P. N.; Fadda, D.; Marleau, F.; Frayer, D. T.; Hélou, G.; Condon, J. J.; Choi, Philip; Yan, Lin; Lacy, Mark; Wilson, Gillian; Armus, L.; Chapman, S. C.; Fan, Fang; Heinrichson, I.; Im, Myungshin; Jannuzi, Buell T.; Storrie-Lombardi, L. J.; Shupe, D. L.; Soifer, B. T.; Squires, G.; Teplitz, Harry I.

doi:10.1086/426055

Cited by 159 publications

(318 citation statements)

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“…Considering the small wavelength difference, this is plainly consistent with the values of q 24 derived by Appleton et al (2004).…”

Section: Determining K-corrected Values Of Q For Theĝ Subsamplesupporting

confidence: 89%

“…Following Appleton et al (2004) I define q 22 = log(S 22 μ /S 20 cm ) where S 22 μ and S 20 cm are the source flux densities measured by WISE and NVSS at wavelengths of 22 μm (WISE band 4) and 20 cm. Since the majority of the source samples are typically located in the local universe, the values of q 22 derived are relatively insensitive to any reasonable k-correction.…”

Section: Determining K-corrected Values Of Q For Theĝ Subsamplementioning

confidence: 99%

“…Appleton et al (2004) derived a zero-redshift value for q 24 = 0.84 ± 0.28 for a source sample derived from Spitzer observations of the First Look Survey (FLS). In Fig.…”

Section: Determining K-corrected Values Of Q For Theĝ Subsamplementioning

confidence: 99%

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Application of the mid-IR radio correlation to the Ĝ sample and the search for advanced extraterrestrial civilisations

Garrett

2015

A&A

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Wright et al. (2014, ApJ, 792, 26) have embarked on a search for advanced Karadashev Type III civilisations via the compilation of a sample of sources with extreme mid-IR emission and colours. The aim is to furnish a list of candidate galaxies that might harbour an advanced Kardashev Type III civilisation; in this scenario, the mid-IR emission is then primarily associated with waste heat energy byproducts. I apply the mid-IR radio correlation to this Glimpsing Heat from Alien Technology (Ĝ) sample, a catalogue of 93 candidate galaxies compiled by Griffith et al. (2015, ApJS, 217, 25). I demonstrate that the mid-IR and radio luminosities are correlated for the sample, determining a k-corrected value of q 22 = 1.35 ± 0.42. By comparison, a similar measurement for 124 galaxies drawn from the First Look Survey (FLS) has q 22 = 0.87 ± 0.27. The statistically significant difference of the mean value of q 22 for these two samples, taken together with their more comparable far-IR properties, suggests that theĜ sample shows excessive emission in the mid-IR. The fact that theĜ sample largely follows the mid-IR radio correlation strongly suggests that the vast majority of these sources are associated with galaxies in which natural astrophysical processes are dominant. This simple application of the mid-IR radio correlation can substantially reduce the number of false positives in theĜ catalogue since galaxies occupied by advanced Kardashev Type III civilisations would be expected to exhibit very high values of q. I identify nine outliers in the sample with q 22 > 2 of which at least three have properties that are relatively well explained via standard astrophysical interpretations e.g. dust emission associated with nascent star formation and/or nuclear activity from a heavily obscured AGN. The other outliers have not been studied in any great detail, and are deserving of further observation. I also note that the comparison of resolved mid-IR and radio images of galaxies on sub-galactic (kpc) scales can also be useful in identifying and recognising artificial mid-IR emission from less advanced intermediate Type II/III civilisations. Nevertheless, from the bulk properties of theĜ sample, I conclude that Kardashev Type III civilisations are either very rare or do not exist in the local Universe.

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“…Considering the small wavelength difference, this is plainly consistent with the values of q 24 derived by Appleton et al (2004).…”

Section: Determining K-corrected Values Of Q For Theĝ Subsamplesupporting

confidence: 89%

Section: Determining K-corrected Values Of Q For Theĝ Subsamplementioning

confidence: 99%

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Application of the mid-IR radio correlation to the Ĝ sample and the search for advanced extraterrestrial civilisations

Garrett

2015

A&A

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“…Figure 12 shows the relationship between 1.4 GHz radio flux and WISE mid-IR apparent magnitudes. At both 12 and 22 μm, we find a correlation similar to the radio-FIR (see also Appleton et al 2004). We compute the radio-MIR regression coefficients using Kaplan-Meier method so as to consider the upper limits in the radio during the fit.…”

Section: Radio-mir Flux Correlationmentioning

confidence: 66%

“…In terms of the MIR flux, the slope of the radio-12 μm and radio-22 μm relation is ∼0.8 and 0.75, respectively, which is comparable to the slope obtained in previous studies of radio-MIR (Gruppioni et al 2003) and radio-FIR relation (which is ∼0.9). Unlike the tight radio-FIR correlation, the radio-MIR relation has a high dispersion (Appleton et al 2004), possibly because the 12 m m emission is not solely due to the dust heated by young stars, but can arise from the PAHs heated by young/evolved stars/AGNs or from the dust shells of the AGB population.…”

Section: Radio-mir Flux Correlationmentioning

confidence: 99%

Constraints on Feedback in the Local Universe: The Relation Between Star Formation and Agn Activity in Early-Type Galaxies

Vaddi

O’Dea

Baum

et al. 2016

ApJ

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We address the relation between star formation and active galactic nucleus (AGN) activity in a sample of 231 nearby (0.0002 < z < 0.0358) early-type galaxies by carrying out a multi-wavelength study using archival observations in the UV, IR, and radio. Our results indicate that early-type galaxies in the current epoch are rarely powerful AGNs, with P 10 WHz 22 1 < -for a majority of the galaxies. Only massive galaxies are capable of hosting powerful radio sources while less massive galaxies are hosts to lower radio power sources. Evidence of ongoing star formation is seen in approximately 7% of the sample. The star formation rate (SFR) of these galaxies is less than 0.1 M e yr −1 . They also tend to be radio faint (P 10 WHzThere is a nearly equal fraction of star-forming galaxies in radio faint (P 10 WHz 22 1 < -) and radio bright galaxies (P 10 WHz 22 1  -) suggesting that both star formation and radio mode feedback are constrained to be very low in our sample. We notice that our galaxy sample and the Brightest Cluster Galaxies follow similar trends in radio power versus SFR. This may be produced if both radio power and SFR are related to stellar mass.

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Understanding Galaxy Formation with ISO Deep Surveys

Elbaz¹

ISO Science Legacy

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We present the results obtained through the various ISO extragalactic deep surveys. While IRAS revealed the existence of galaxies forming stars at a rate of a few tens (LIRGs) or even hundreds (ULIRGs) solar masses in the local universe, ISO not only discovered that these galaxies were already in place at redshift one, but also that they are not the extreme objects that we once believed them to be. Instead they appear to play a dominant role in shaping present-day galaxies as reflected by their role in the cosmic history of star formation and in producing the cosmic infrared background detected by the COBE satellite in the far infrared to sub-millimeter range.

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Erratum: “The Far‐ and Mid‐Infrared/Radio Correlations in the Spitzer Extragalactic First Look Survey” (ApJS, 154, 147 [2004])

Cited by 159 publications

References 0 publications

Application of the mid-IR radio correlation to the Ĝ sample and the search for advanced extraterrestrial civilisations

Application of the mid-IR radio correlation to the Ĝ sample and the search for advanced extraterrestrial civilisations

Constraints on Feedback in the Local Universe: The Relation Between Star Formation and Agn Activity in Early-Type Galaxies

Understanding Galaxy Formation with ISO Deep Surveys

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