Spitzer imaging of Herschel-atlas gravitationally lensed submillimeter sources

R. Hopwood; J. Wardlow; A. Cooray; A.A. Khostovan; S. Kim; M. Negrello; E. da Cunha; D. Burgarella; I. Aretxaga; R. Auld; M. Baes; E. Barton; F. Bertoldi; D. Bonfield; R. Blundell; S. Buttiglione; A. Cava; D. Clements; J. Cooke; H. Dannerbauer; A. Dariush; G. de Zotti; J.S. Dunlop; L. Dunne; S. Dye; S. Eales; J. Fritz; D. Frayer; M.A. Gurwell; D.H. Hughes; E. Ibar; R.J. Ivison; M.J. Jarvis; G. Lagache; L. Leeuw; S. Maddox; M.J. Michallowski; A. Omont; E. Pascale; M. Pohlen; E. Rigby; G. Rodighiero; D. Scott; S. Serjeant; I. Smail; Daniel Smith; P. Temi; M.A. Thompson; I. Valtchanov; P. van der Werf; A. Verma; J. Vieira

doi:10.1088/2041-8205/728/1/L4

Spitzer imaging of Herschel-atlas gravitationally lensed submillimeter sources

R. Hopwood, J. Wardlow, A. Cooray, A.A. Khostovan, S. Kim, M. Negrello, E. da Cunha, D. Burgarella, I. Aretxaga, R. Auld, M. Baes, E. Barton, F. Bertoldi, D. Bonfield, R. Blundell, S. Buttiglione, A. Cava, D. Clements, J. Cooke, H. DannerbauerA. Dariush, G. de Zotti, J.S. Dunlop, L. Dunne, S. Dye, S. Eales, J. Fritz, D. Frayer, M.A. Gurwell, D.H. Hughes, E. Ibar, R.J. Ivison, M.J. Jarvis, G. Lagache, L. Leeuw, S. Maddox, M.J. Michallowski, A. Omont, E. Pascale, M. Pohlen, E. Rigby, G. Rodighiero, D. Scott, S. Serjeant, I. Smail, Daniel Smith, P. Temi, M.A. Thompson, I. Valtchanov, P. van der Werf, A. Verma, J. Vieira

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Abstract

We present physical properties of two submillimeter selected gravitationally lensed sources, identified in the Herschel Astrophysical Terahertz Large Area Survey. These submillimeter galaxies (SMGs) have flux densities >100 mJy at 500 mu m, but are not visible in existing optical imaging. We fit light profiles to each component of the lensing systems in Spitzer IRAC 3.6 and 4.5 mu m data and successfully disentangle the foreground lens from the background source in each case, providing important constraints on the spectral energy distributions (SEDs) of the background SMG at rest-frame optical-near-infrared wavelengths. The SED fits show that these two SMGs have high dust obscuration with A(V) similar to 4-5 and star formation rates of similar to 100M(circle dot) yr(-1). They have low gas fractions and low dynamical masses compared with 850 mu m selected galaxies.

Original language	English
Article number	L4
Journal	Astrophysical Journal Letters
Volume	728
Issue number	1
DOIs	https://doi.org/10.1088/2041-8205/728/1/L4
Publication status	Published - 2011

Keywords

galaxies: individual
galaxies: starburst
gravitational lensing: strong

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10.1088/2041-8205/728/1/L4

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Hopwood, R., Wardlow, J., Cooray, A., Khostovan, A. A., Kim, S., Negrello, M., da Cunha, E., Burgarella, D., Aretxaga, I., Auld, R., Baes, M., Barton, E., Bertoldi, F., Bonfield, D., Blundell, R., Buttiglione, S., Cava, A., Clements, D., Cooke, J., ... Vieira, J. (2011). Spitzer imaging of Herschel-atlas gravitationally lensed submillimeter sources. Astrophysical Journal Letters, 728(1), Article L4. https://doi.org/10.1088/2041-8205/728/1/L4

@article{47de4ebab2ef44db98a083e934403fc4,

title = "Spitzer imaging of Herschel-atlas gravitationally lensed submillimeter sources",

abstract = "We present physical properties of two submillimeter selected gravitationally lensed sources, identified in the Herschel Astrophysical Terahertz Large Area Survey. These submillimeter galaxies (SMGs) have flux densities >100 mJy at 500 mu m, but are not visible in existing optical imaging. We fit light profiles to each component of the lensing systems in Spitzer IRAC 3.6 and 4.5 mu m data and successfully disentangle the foreground lens from the background source in each case, providing important constraints on the spectral energy distributions (SEDs) of the background SMG at rest-frame optical-near-infrared wavelengths. The SED fits show that these two SMGs have high dust obscuration with A(V) similar to 4-5 and star formation rates of similar to 100M(circle dot) yr(-1). They have low gas fractions and low dynamical masses compared with 850 mu m selected galaxies.",

keywords = "galaxies: individual, galaxies: starburst, gravitational lensing: strong",

author = "R. Hopwood and J. Wardlow and A. Cooray and A.A. Khostovan and S. Kim and M. Negrello and {da Cunha}, E. and D. Burgarella and I. Aretxaga and R. Auld and M. Baes and E. Barton and F. Bertoldi and D. Bonfield and R. Blundell and S. Buttiglione and A. Cava and D. Clements and J. Cooke and H. Dannerbauer and A. Dariush and {de Zotti}, G. and J.S. Dunlop and L. Dunne and S. Dye and S. Eales and J. Fritz and D. Frayer and M.A. Gurwell and D.H. Hughes and E. Ibar and R.J. Ivison and M.J. Jarvis and G. Lagache and L. Leeuw and S. Maddox and M.J. Michallowski and A. Omont and E. Pascale and M. Pohlen and E. Rigby and G. Rodighiero and D. Scott and S. Serjeant and I. Smail and Daniel Smith and P. Temi and M.A. Thompson and I. Valtchanov and {van der Werf}, P. and A. Verma and J. Vieira",

note = "Original article can be found at: http://www.iop.org/EJ/journal/apjl Copyright American Astronomical Society[Full text of this article is not available in the UHRA]",

year = "2011",

doi = "10.1088/2041-8205/728/1/L4",

language = "English",

volume = "728",

journal = "Astrophysical Journal Letters",

issn = "2041-8213",

publisher = "IOP Publishing Ltd.",

number = "1",

}

Hopwood, R, Wardlow, J, Cooray, A, Khostovan, AA, Kim, S, Negrello, M, da Cunha, E, Burgarella, D, Aretxaga, I, Auld, R, Baes, M, Barton, E, Bertoldi, F, Bonfield, D, Blundell, R, Buttiglione, S, Cava, A, Clements, D, Cooke, J, Dannerbauer, H, Dariush, A, de Zotti, G, Dunlop, JS, Dunne, L, Dye, S, Eales, S, Fritz, J, Frayer, D, Gurwell, MA, Hughes, DH, Ibar, E, Ivison, RJ, Jarvis, MJ, Lagache, G, Leeuw, L, Maddox, S, Michallowski, MJ, Omont, A, Pascale, E, Pohlen, M, Rigby, E, Rodighiero, G, Scott, D, Serjeant, S, Smail, I, Smith, D, Temi, P, Thompson, MA, Valtchanov, I, van der Werf, P, Verma, A & Vieira, J 2011, 'Spitzer imaging of Herschel-atlas gravitationally lensed submillimeter sources', Astrophysical Journal Letters, vol. 728, no. 1, L4. https://doi.org/10.1088/2041-8205/728/1/L4

TY - JOUR

T1 - Spitzer imaging of Herschel-atlas gravitationally lensed submillimeter sources

AU - Hopwood, R.

AU - Wardlow, J.

AU - Cooray, A.

AU - Khostovan, A.A.

AU - Kim, S.

AU - Negrello, M.

AU - da Cunha, E.

AU - Burgarella, D.

AU - Aretxaga, I.

AU - Auld, R.

AU - Baes, M.

AU - Barton, E.

AU - Bertoldi, F.

AU - Bonfield, D.

AU - Blundell, R.

AU - Buttiglione, S.

AU - Cava, A.

AU - Clements, D.

AU - Cooke, J.

AU - Dannerbauer, H.

AU - Dariush, A.

AU - de Zotti, G.

AU - Dunlop, J.S.

AU - Dunne, L.

AU - Dye, S.

AU - Eales, S.

AU - Fritz, J.

AU - Frayer, D.

AU - Gurwell, M.A.

AU - Hughes, D.H.

AU - Ibar, E.

AU - Ivison, R.J.

AU - Jarvis, M.J.

AU - Lagache, G.

AU - Leeuw, L.

AU - Maddox, S.

AU - Michallowski, M.J.

AU - Omont, A.

AU - Pascale, E.

AU - Pohlen, M.

AU - Rigby, E.

AU - Rodighiero, G.

AU - Scott, D.

AU - Serjeant, S.

AU - Smail, I.

AU - Smith, Daniel

AU - Temi, P.

AU - Thompson, M.A.

AU - Valtchanov, I.

AU - van der Werf, P.

AU - Verma, A.

AU - Vieira, J.

N1 - Original article can be found at: http://www.iop.org/EJ/journal/apjl Copyright American Astronomical Society[Full text of this article is not available in the UHRA]

PY - 2011

Y1 - 2011

N2 - We present physical properties of two submillimeter selected gravitationally lensed sources, identified in the Herschel Astrophysical Terahertz Large Area Survey. These submillimeter galaxies (SMGs) have flux densities >100 mJy at 500 mu m, but are not visible in existing optical imaging. We fit light profiles to each component of the lensing systems in Spitzer IRAC 3.6 and 4.5 mu m data and successfully disentangle the foreground lens from the background source in each case, providing important constraints on the spectral energy distributions (SEDs) of the background SMG at rest-frame optical-near-infrared wavelengths. The SED fits show that these two SMGs have high dust obscuration with A(V) similar to 4-5 and star formation rates of similar to 100M(circle dot) yr(-1). They have low gas fractions and low dynamical masses compared with 850 mu m selected galaxies.

AB - We present physical properties of two submillimeter selected gravitationally lensed sources, identified in the Herschel Astrophysical Terahertz Large Area Survey. These submillimeter galaxies (SMGs) have flux densities >100 mJy at 500 mu m, but are not visible in existing optical imaging. We fit light profiles to each component of the lensing systems in Spitzer IRAC 3.6 and 4.5 mu m data and successfully disentangle the foreground lens from the background source in each case, providing important constraints on the spectral energy distributions (SEDs) of the background SMG at rest-frame optical-near-infrared wavelengths. The SED fits show that these two SMGs have high dust obscuration with A(V) similar to 4-5 and star formation rates of similar to 100M(circle dot) yr(-1). They have low gas fractions and low dynamical masses compared with 850 mu m selected galaxies.

KW - galaxies: individual

KW - galaxies: starburst

KW - gravitational lensing: strong

U2 - 10.1088/2041-8205/728/1/L4

DO - 10.1088/2041-8205/728/1/L4

M3 - Article

SN - 2041-8213

VL - 728

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 1

M1 - L4

ER -

Spitzer imaging of Herschel-atlas gravitationally lensed submillimeter sources

Abstract

Keywords

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