The far- and mid-infrared/radio correlations in the Spitzer extragalactic first look survey

P. N. Appleton, D. T. Fadda, F. R. Marleau, D. T. Frayer, G. Helou, J. J. Condon, P. I. Choi, L. Yan, M. Lacy, G. Wilson, L. Armus, S. C. Chapman, F. Fang, I. Heinrichson, M. Im, Buell Tomasson Jannuzi, L. J. Storrie-Lombardi, D. Shupe, B. T. Soifer, G. SquiresH. I. Teplitz

Research output: Contribution to journalArticle

230 Citations (Scopus)

Abstract

Using the Spitzer Space Telescope and the Very Large Array (VLA), we present the first direct evidence that the well-known far-infrared/radio correlation is valid to cosmologically significant redshift. We also confirm, with improved statistics compared with previous surveys, a similar result for the mid-IR/radio correlation. We explore the dependence of monochromatic q 24 and q70 on z. The results were obtained by matching Spitzer sources at 24 and 70 μm with VLA 1.4 GHz microjansky radio sources obtained for the Spitzer First Look Survey (FLS). Spectroscopic redshifts have been obtained for over 500 matched IR/radio sources using observations at WIYN and Keck, and archival Sloan Digital Sky Survey (SDSS) data extending out to z > 2. We find that 924 shows significantly more dispersion than q70. By comparing the observed fluxes at 70, 24, and 4.5 μm with a library of SED templates, we find that the larger dispersion in q24 is predictable in terms of systematic variations in spectral energy distribution (SED) shape throughout the population. Although the models are not able to encompass the full range of observed behavior (both the presence of either extremely flat or extremely steep IR SEDs), the fitting parameters were used to "k-correct" the higher z galaxies, which resulted in a reduced scatter in q. For comparison, we also corrected these data using the SED for M82. The results for 24 and 70 μm provide strong consistent evidence for the universality of the mid- and far-IR/radio correlations out to redshifts of at least z = 1.

Original languageEnglish (US)
Pages (from-to)147-150
Number of pages4
JournalAstrophysical Journal, Supplement Series
Volume154
Issue number1
DOIs
StatePublished - Sep 2004
Externally publishedYes

Fingerprint

spectral energy distribution
Very Large Array (VLA)
radio
Space Infrared Telescope Facility
energy
templates
statistics
galaxies
distribution

Keywords

  • Cosmology: observations
  • Galaxies: evolution
  • Galaxies: high-redshift
  • Infrared: galaxies

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Appleton, P. N., Fadda, D. T., Marleau, F. R., Frayer, D. T., Helou, G., Condon, J. J., ... Teplitz, H. I. (2004). The far- and mid-infrared/radio correlations in the Spitzer extragalactic first look survey. Astrophysical Journal, Supplement Series, 154(1), 147-150. https://doi.org/10.1086/422425

The far- and mid-infrared/radio correlations in the Spitzer extragalactic first look survey. / Appleton, P. N.; Fadda, D. T.; Marleau, F. R.; Frayer, D. T.; Helou, G.; Condon, J. J.; Choi, P. I.; Yan, L.; Lacy, M.; Wilson, G.; Armus, L.; Chapman, S. C.; Fang, F.; Heinrichson, I.; Im, M.; Jannuzi, Buell Tomasson; Storrie-Lombardi, L. J.; Shupe, D.; Soifer, B. T.; Squires, G.; Teplitz, H. I.

In: Astrophysical Journal, Supplement Series, Vol. 154, No. 1, 09.2004, p. 147-150.

Research output: Contribution to journalArticle

Appleton, PN, Fadda, DT, Marleau, FR, Frayer, DT, Helou, G, Condon, JJ, Choi, PI, Yan, L, Lacy, M, Wilson, G, Armus, L, Chapman, SC, Fang, F, Heinrichson, I, Im, M, Jannuzi, BT, Storrie-Lombardi, LJ, Shupe, D, Soifer, BT, Squires, G & Teplitz, HI 2004, 'The far- and mid-infrared/radio correlations in the Spitzer extragalactic first look survey', Astrophysical Journal, Supplement Series, vol. 154, no. 1, pp. 147-150. https://doi.org/10.1086/422425
Appleton, P. N. ; Fadda, D. T. ; Marleau, F. R. ; Frayer, D. T. ; Helou, G. ; Condon, J. J. ; Choi, P. I. ; Yan, L. ; Lacy, M. ; Wilson, G. ; Armus, L. ; Chapman, S. C. ; Fang, F. ; Heinrichson, I. ; Im, M. ; Jannuzi, Buell Tomasson ; Storrie-Lombardi, L. J. ; Shupe, D. ; Soifer, B. T. ; Squires, G. ; Teplitz, H. I. / The far- and mid-infrared/radio correlations in the Spitzer extragalactic first look survey. In: Astrophysical Journal, Supplement Series. 2004 ; Vol. 154, No. 1. pp. 147-150.
@article{d97f8671bef14c8aa2697c1ea73e3cc5,
title = "The far- and mid-infrared/radio correlations in the Spitzer extragalactic first look survey",
abstract = "Using the Spitzer Space Telescope and the Very Large Array (VLA), we present the first direct evidence that the well-known far-infrared/radio correlation is valid to cosmologically significant redshift. We also confirm, with improved statistics compared with previous surveys, a similar result for the mid-IR/radio correlation. We explore the dependence of monochromatic q 24 and q70 on z. The results were obtained by matching Spitzer sources at 24 and 70 μm with VLA 1.4 GHz microjansky radio sources obtained for the Spitzer First Look Survey (FLS). Spectroscopic redshifts have been obtained for over 500 matched IR/radio sources using observations at WIYN and Keck, and archival Sloan Digital Sky Survey (SDSS) data extending out to z > 2. We find that 924 shows significantly more dispersion than q70. By comparing the observed fluxes at 70, 24, and 4.5 μm with a library of SED templates, we find that the larger dispersion in q24 is predictable in terms of systematic variations in spectral energy distribution (SED) shape throughout the population. Although the models are not able to encompass the full range of observed behavior (both the presence of either extremely flat or extremely steep IR SEDs), the fitting parameters were used to {"}k-correct{"} the higher z galaxies, which resulted in a reduced scatter in q. For comparison, we also corrected these data using the SED for M82. The results for 24 and 70 μm provide strong consistent evidence for the universality of the mid- and far-IR/radio correlations out to redshifts of at least z = 1.",
keywords = "Cosmology: observations, Galaxies: evolution, Galaxies: high-redshift, Infrared: galaxies",
author = "Appleton, {P. N.} and Fadda, {D. T.} and Marleau, {F. R.} and Frayer, {D. T.} and G. Helou and Condon, {J. J.} and Choi, {P. I.} and L. Yan and M. Lacy and G. Wilson and L. Armus and Chapman, {S. C.} and F. Fang and I. Heinrichson and M. Im and Jannuzi, {Buell Tomasson} and Storrie-Lombardi, {L. J.} and D. Shupe and Soifer, {B. T.} and G. Squires and Teplitz, {H. I.}",
year = "2004",
month = "9",
doi = "10.1086/422425",
language = "English (US)",
volume = "154",
pages = "147--150",
journal = "Astrophysical Journal, Supplement Series",
issn = "0067-0049",
publisher = "IOP Publishing Ltd.",
number = "1",

}

TY - JOUR

T1 - The far- and mid-infrared/radio correlations in the Spitzer extragalactic first look survey

AU - Appleton, P. N.

AU - Fadda, D. T.

AU - Marleau, F. R.

AU - Frayer, D. T.

AU - Helou, G.

AU - Condon, J. J.

AU - Choi, P. I.

AU - Yan, L.

AU - Lacy, M.

AU - Wilson, G.

AU - Armus, L.

AU - Chapman, S. C.

AU - Fang, F.

AU - Heinrichson, I.

AU - Im, M.

AU - Jannuzi, Buell Tomasson

AU - Storrie-Lombardi, L. J.

AU - Shupe, D.

AU - Soifer, B. T.

AU - Squires, G.

AU - Teplitz, H. I.

PY - 2004/9

Y1 - 2004/9

N2 - Using the Spitzer Space Telescope and the Very Large Array (VLA), we present the first direct evidence that the well-known far-infrared/radio correlation is valid to cosmologically significant redshift. We also confirm, with improved statistics compared with previous surveys, a similar result for the mid-IR/radio correlation. We explore the dependence of monochromatic q 24 and q70 on z. The results were obtained by matching Spitzer sources at 24 and 70 μm with VLA 1.4 GHz microjansky radio sources obtained for the Spitzer First Look Survey (FLS). Spectroscopic redshifts have been obtained for over 500 matched IR/radio sources using observations at WIYN and Keck, and archival Sloan Digital Sky Survey (SDSS) data extending out to z > 2. We find that 924 shows significantly more dispersion than q70. By comparing the observed fluxes at 70, 24, and 4.5 μm with a library of SED templates, we find that the larger dispersion in q24 is predictable in terms of systematic variations in spectral energy distribution (SED) shape throughout the population. Although the models are not able to encompass the full range of observed behavior (both the presence of either extremely flat or extremely steep IR SEDs), the fitting parameters were used to "k-correct" the higher z galaxies, which resulted in a reduced scatter in q. For comparison, we also corrected these data using the SED for M82. The results for 24 and 70 μm provide strong consistent evidence for the universality of the mid- and far-IR/radio correlations out to redshifts of at least z = 1.

AB - Using the Spitzer Space Telescope and the Very Large Array (VLA), we present the first direct evidence that the well-known far-infrared/radio correlation is valid to cosmologically significant redshift. We also confirm, with improved statistics compared with previous surveys, a similar result for the mid-IR/radio correlation. We explore the dependence of monochromatic q 24 and q70 on z. The results were obtained by matching Spitzer sources at 24 and 70 μm with VLA 1.4 GHz microjansky radio sources obtained for the Spitzer First Look Survey (FLS). Spectroscopic redshifts have been obtained for over 500 matched IR/radio sources using observations at WIYN and Keck, and archival Sloan Digital Sky Survey (SDSS) data extending out to z > 2. We find that 924 shows significantly more dispersion than q70. By comparing the observed fluxes at 70, 24, and 4.5 μm with a library of SED templates, we find that the larger dispersion in q24 is predictable in terms of systematic variations in spectral energy distribution (SED) shape throughout the population. Although the models are not able to encompass the full range of observed behavior (both the presence of either extremely flat or extremely steep IR SEDs), the fitting parameters were used to "k-correct" the higher z galaxies, which resulted in a reduced scatter in q. For comparison, we also corrected these data using the SED for M82. The results for 24 and 70 μm provide strong consistent evidence for the universality of the mid- and far-IR/radio correlations out to redshifts of at least z = 1.

KW - Cosmology: observations

KW - Galaxies: evolution

KW - Galaxies: high-redshift

KW - Infrared: galaxies

UR - http://www.scopus.com/inward/record.url?scp=5644255916&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=5644255916&partnerID=8YFLogxK

U2 - 10.1086/422425

DO - 10.1086/422425

M3 - Article

AN - SCOPUS:5644255916

VL - 154

SP - 147

EP - 150

JO - Astrophysical Journal, Supplement Series

JF - Astrophysical Journal, Supplement Series

SN - 0067-0049

IS - 1

ER -