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Near-infrared background anisotropies from diffuse intrahalo light of galaxies

Abstract

Unresolved anisotropies of the cosmic near-infrared background radiation are expected to have contributions from the earliest galaxies during the epoch of reionization1,2,3,4,5 and from faint, dwarf galaxies at intermediate redshifts6,7. Previous measurements8,9,10,11,12 were unable to pinpoint conclusively the dominant origin because they did not sample spatial scales that were sufficiently large to distinguish between these two possibilities. Here we report a measurement of the anisotropy power spectrum from subarcminute to one-degree angular scales, and find the clustering amplitude to be larger than predicted by the models based on the two existing explanations. As the shot-noise level of the power spectrum is consistent with that expected from faint galaxies, a new source population on the sky is not necessary to explain the observations. However, a physical mechanism that increases the clustering amplitude is needed. Motivated by recent results related to the extended stellar light profile in dark-matter haloes13,14,15, we consider the possibility that the fluctuations originate from intrahalo stars of all galaxies. We find that the measured power spectrum can be explained by an intrahalo light fraction of 0.07 to 0.2 per cent relative to the total luminosity in dark-matter haloes of 109 to 1012 solar masses at redshifts of about 1 to 4.

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Figure 1: The angular power spectrum of the unresolved near-infrared background.
Figure 2: The IHL fraction from diffuse stars as a function of the halo mass.
Figure 3: The spectral energy distribution of infrared background anisotropies.

References

  1. Santos, M. R., Bromm, V. & Kamionkowski, M. The contribution of the first stars to the cosmic infrared background. Mon. Not. R. Astron. Soc. 336, 1082–1092 (2002)

    Article  ADS  Google Scholar 

  2. Salvaterra, R. & Ferrara, A. The imprint of the cosmic dark ages on the near-infrared background. Mon. Not. R. Astron. Soc. 339, 973–982 (2003)

    Article  ADS  CAS  Google Scholar 

  3. Cooray, A., Bock, J. J., Keating, B., Lange, A. E. & Matsumoto, T. First star signature in infrared background anisotropies. Astrophys. J. 606, 611–624 (2004)

    Article  ADS  CAS  Google Scholar 

  4. Kashlinsky, A., Arendt, R., Gardner, J. P., Mather, J. C. & Moseley, S. H. Detecting population III stars through observations of near-infrared cosmic infrared background anisotropies. Astrophys. J. 608, 1–9 (2004)

    Article  ADS  CAS  Google Scholar 

  5. Fernandez, E. R., Komatsu, E., Iliev, I. T. & Shapiro, P. R. The cosmic near-infrared background II: fluctuations. Astrophys. J. 710, 1089–1110 (2010)

    Article  ADS  Google Scholar 

  6. Chary, R., Cooray, A. & Sullivan, I. Contribution to unresolved infrared fluctuations from dwarf galaxies at redshifts of 2–3. Astrophys. J. 681, 53–57 (2008)

    Article  ADS  CAS  Google Scholar 

  7. Helgason, K., Ricotti, M. & Kashlinsky, A. Reconstructing the near-IR background fluctuations from known galaxy populations using multiband measurements of luminosity functions. Astrophys. J. 752, 113 (2012)

    Article  ADS  Google Scholar 

  8. Kashlinsky, A., Arendt, R. G., Mather, J. & Moseley, S. H. Tracing the first stars with fluctuations of the cosmic infrared background. Nature 438, 45–50 (2005)

    Article  ADS  CAS  Google Scholar 

  9. Cooray, A. et al. IR background anisotropies in Spitzer GOODS images and constraints on first galaxies. Astrophys. J. 659, L91–L94 (2007)

    Article  ADS  Google Scholar 

  10. Thompson, R., Eisenstein, D., Fan, X., Rieke, M. & Kennicutt, R. C. Evidence for a z 8 origin of the source-subtracted near-infrared background. Astrophys. J. 666, 658–662 (2007)

    Article  ADS  Google Scholar 

  11. Matsumoto, T. et al. AKARI observation of the fluctuation of the near-infrared background. Astrophys. J. 742, 124 (2011)

    Article  ADS  Google Scholar 

  12. Kashlinsky, A. et al. New measurements of the cosmic infrared background fluctuations in deep Spitzer/IRAC survey data and their cosmological implications. Astrophys. J. 753, 63 (2012)

    Article  ADS  Google Scholar 

  13. Purcell, C. W., Bullock, J. S. & Zentner, A. R. Shredded galaxies as the source of diffuse intrahalo light on varying scales. Astrophys. J. 666, 20–33 (2007)

    Article  ADS  CAS  Google Scholar 

  14. Purcell, C. W., Bullock, J. S. & Zentner, A. R. The metallicity of diffuse intrahalo light. Mon. Not. R. Astron. Soc. 391, 550–558 (2008)

    Article  ADS  CAS  Google Scholar 

  15. Conroy, C., Wechsler, R. H. & Kravtsov, A. V. The hierarchical build-up of massive galaxies and the intracluster light since z = 1. Astrophys. J. 668, 826–838 (2007)

    Article  ADS  CAS  Google Scholar 

  16. Ashby, M. L. N. et al. The Spitzer Deep, Wide-field Survey. Astrophys. J. 701, 428–453 (2009)

    Article  ADS  Google Scholar 

  17. Arendt, R. G., Fixsen, D. J. & Moseley, S. H. Dithering strategies for efficient self-calibration of imaging arrays. Astrophys. J. 536, 500–512 (2000)

    Article  ADS  Google Scholar 

  18. Jannuzi, B. T. & Dey, A. in Photometric Redshifts and the Detection of High Redshift Galaxies (eds Weymann, R., Storrie-Lombardi, L., Sawicki, M. & Brunner, R.) 111–116 (ASP Conf. Ser. Vol. 191, Astron. Soc. Pacif., 1999)

    Google Scholar 

  19. Cooray, A., Gong, Y., Smidt, J. & Santos, M. G. The near-IR background intensity and anisotropies during the epoch of reionization. Astrophys. J. 756, 92 (2012)

    Article  ADS  Google Scholar 

  20. Fernandez, E. R., Iliev, I. T., Komatsu, E. & Shapiro, P. R. The cosmic near infrared background. III. Fluctuations, reionization, and the effects of minimum mass and self-regulation. Astrophys. J. 750, 20 (2012)

    Article  ADS  Google Scholar 

  21. Madau, P. & Silk, J. Population III and the near-infrared background excess. Mon. Not. R. Astron. Soc. 359, L37–L41 (2005)

    Article  ADS  Google Scholar 

  22. Cooray, A. & Sheth, R. Halo models of large scale structure. Phys. Rep. 372, 1–129 (2002)

    Article  ADS  Google Scholar 

  23. Tal, T. &. van Dokkum, P. The faint stellar halos of massive red galaxies from stacks of more than 42000 SDSS LRG images. Astrophys. J. 731, 89 (2011)

    Article  ADS  Google Scholar 

  24. Lin, Y. & Mohr, J. J. K-band properties of galaxy clusters and groups: brightest cluster galaxies and intracluster light. Astrophys. J. 617, 879–895 (2004)

    Article  ADS  CAS  Google Scholar 

  25. Rudick, C. S., Mihos, J. C., Frey, L. H. & McBride, C. K. Tidal streams of intracluster light. Astrophys. J. 699, 1518–1529 (2009)

    Article  ADS  Google Scholar 

  26. Gonzalez, A. H., Zabludoff, A. I. & Zaritsky, D. Intracluster light in nearby galaxy clusters: relationship to the halos of brightest cluster galaxies. Astrophys. J. 618, 195–213 (2005)

    Article  ADS  Google Scholar 

  27. Levenson, L. R., Wright, E. L. & Johnson, B. D. DIRBE minus 2MASS: confirming the CIRB in 40 new regions at 2.2 and 3.5 microns. Astrophys. J. 666, 34–44 (2007)

    Article  ADS  CAS  Google Scholar 

  28. Amblard, A. et al. Submillimetre galaxies reside in dark matter haloes with masses greater than 3 × 1011 solar masses. Nature 470, 510–512 (2011)

    Article  ADS  CAS  Google Scholar 

  29. Carollo, D. et al. Structure and kinematics of the stellar halos and thick disks of the Milky Way based on calibration stars from Sloan Digital Sky Survey DR7. Astrophys. J. 712, 692–727 (2010)

    Article  ADS  CAS  Google Scholar 

  30. Courteau, S. et al. The luminosity profile and structural parameters of the Andromeda Galaxy. Astrophys. J. 739, 20 (2011)

    Article  ADS  Google Scholar 

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Acknowledgements

We acknowledge support from NSF CAREER (to A.C.), NASA ADAP and an award from JPL/Caltech. We thank R. Arendt for sharing his IRAC self-calibration code. We thank J. Bock and M. Zemcov for their contributions to the SDWFS project. This work is based on observations made with the Spitzer Space Telescope. This work also made use of data products provided by the NOAO Deep Wide-Field Survey. A.C. thanks the Aspen Center for Physics for hospitality.

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Contributions

A.C. planned the study, developed the IHL model, supervised the research work of J.S., F.D.B., C.C.F. and Y.G., and wrote the draft version of this paper. J.S. and C.C.F. performed the power spectrum measurements and F.D.B. interpreted those measurements with a halo model for the IHL. Y.G. developed a model for the high-redshift galaxies. All other co-authors contributed extensively and equally by their varied contributions to the SDWFS project (led by D.S. as the Principal Investigator), planning of SDWFS observations, analysis of SDWFS data, and by commenting on this manuscript as part of an internal review process.

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Correspondence to Asantha Cooray.

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The authors declare no competing financial interests.

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Supplementary Information

This file contains Supplementary Text and Data 1-8, Supplementary Figures 1-13, Supplementary Table 1 and additional references. (PDF 2380 kb)

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Cooray, A., Smidt, J., De Bernardis, F. et al. Near-infrared background anisotropies from diffuse intrahalo light of galaxies. Nature 490, 514–516 (2012). https://doi.org/10.1038/nature11474

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