Modeling of the HerMES submillimeter source lensed by a dark matter dominated foreground group of galaxies

R. Gavazzi; A. Cooray; A. Conley; J. E. Aguirre; A. Amblard; R. Auld; A. Beelen; A. Blain; R. Blundell; J. Bock; C. M. Bradford; C. Bridge; D. Brisbin; D. Burgarella; P. Chanial; E. Chapin; N. Christopher; D. L. Clements; P. Cox; S. G. Djorgovski; C. D. Dowell; S. Eales; L. Earle; T. P. Ellsworth-Bowers; D. Farrah; A. Franceschini; H. Fu; J. Glenn; E. A. Gonzalez Solares; M. Griffin; M. A. Gurwell; M. Halpern; E. Ibar; R. J. Ivison; M. Jarvis; J. Kamenetzky; S. Kim; M. Krips; L. Levenson; R. Lupu; A. Mahabal; P. D. Maloney; C. Maraston; L. Marchetti; G. Marsden; H. Matsuhara; A. M. J. Mortier; E. Murphy; B. J. Naylor; R. Neri; H. T. Nguyen; S. J. Oliver; A. Omont; M. J. Page; A. Papageorgiou; C. P. Pearson; I. Perez-Fournon; M. Pohlen; N. Rangwala; J. I. Rawlings; G. Raymond; D. Riechers; G. Rodighiero; I. G. Roseboom; M. Rowan-Robinson; B. Schulz; Douglas Scott; K. S. Scott; P. Serra; N. Seymour; D. L. Shupe; A. J. Smith; M. Symeonidis; K. E. Tugwell; M. Vaccari; E. Valiante; I. Valtchanov; A. Verma; J. D. Vieira; L. Vigroux; L. Wang; J. Wardlow; D. Wiebe; G. Wright; C. K. Xu; G. Zeimann; M. Zemcov; J. Zmuidzinas

doi:10.1088/0004-637X/738/2/125

Modeling of the HerMES submillimeter source lensed by a dark matter dominated foreground group of galaxies

R. Gavazzi, A. Cooray, A. Conley, J. E. Aguirre, A. Amblard, R. Auld, A. Beelen, A. Blain, R. Blundell, J. Bock, C. M. Bradford, C. Bridge, D. Brisbin, D. Burgarella, P. Chanial, E. Chapin, N. Christopher, D. L. Clements, P. Cox, S. G. DjorgovskiC. D. Dowell, S. Eales, L. Earle, T. P. Ellsworth-Bowers, D. Farrah, A. Franceschini, H. Fu, J. Glenn, E. A. Gonzalez Solares, M. Griffin, M. A. Gurwell, M. Halpern, E. Ibar, R. J. Ivison, M. Jarvis, J. Kamenetzky, S. Kim, M. Krips, L. Levenson, R. Lupu, A. Mahabal, P. D. Maloney, C. Maraston, L. Marchetti, G. Marsden, H. Matsuhara, A. M. J. Mortier, E. Murphy, B. J. Naylor, R. Neri, H. T. Nguyen, S. J. Oliver, A. Omont, M. J. Page, A. Papageorgiou, C. P. Pearson, I. Perez-Fournon, M. Pohlen, N. Rangwala, J. I. Rawlings, G. Raymond, D. Riechers, G. Rodighiero, I. G. Roseboom, M. Rowan-Robinson, B. Schulz, Douglas Scott, K. S. Scott, P. Serra, N. Seymour, D. L. Shupe, A. J. Smith, M. Symeonidis, K. E. Tugwell, M. Vaccari, E. Valiante, I. Valtchanov, A. Verma, J. D. Vieira, L. Vigroux, L. Wang, J. Wardlow, D. Wiebe, G. Wright, C. K. Xu, G. Zeimann, M. Zemcov, J. Zmuidzinas

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Abstract

We present the results of a gravitational lensing analysis of the bright z s = 2.957 submillimeter galaxy (SMG) HERMES found in the Herschel/SPIRE science demonstration phase data from the Herschel Multi-tiered Extragalactic Survey (HerMES) project. The high-resolution imaging available in optical and near-IR channels, along with CO emission obtained with the Plateau de Bure Interferometer, allows us to precisely estimate the intrinsic source extension and hence estimate the total lensing magnification to be μ = 10.9 ± 0.7. We measure the half-light radius R eff of the source in the rest-frame near-UV and V bands that characterize the unobscured light coming from stars and find R eff, * = [2.0 ± 0.1] kpc, in good agreement with recent studies on the SMG population. This lens model is also used to estimate the size of the gas distribution (R eff, gas = [1.1 ± 0.5] kpc) by mapping back in the source plane the CO (J = 5 → 4) transition line emission. The lens modeling yields a relatively large Einstein radius R Ein = 4farcs10 ± 0farcs02, corresponding to a deflector velocity dispersion of [483 ± 16] km s–1. This shows that HERMES is lensed by a galaxy group-size dark matter halo at redshift z l ~ 0.6. The projected dark matter contribution largely dominates the mass budget within the Einstein radius with f dm(< R Ein) ~ 80%. This fraction reduces to f dm(< R eff, G1 sime 4.5 kpc) ~ 47% within the effective radius of the main deflecting galaxy of stellar mass M *, G1 = [8.5 ± 1.6] × 1011 M ☉. At this smaller scale the dark matter fraction is consistent with results already found for massive lensing ellipticals at z ~ 0.2 from the Sloan Lens ACS Survey.

Original language	English
Number of pages	8
Journal	The Astrophysical Journal
Volume	738
Issue number	2
DOIs	https://doi.org/10.1088/0004-637X/738/2/125
Publication status	Published - 10 Sept 2011

Keywords

galaxies: elliptical and lenticular, cD
galaxies: groups: general
galaxies: halos
gravitational lensing: strong
submillimeter: galaxies

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10.1088/0004-637X/738/2/125

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Gavazzi, R., Cooray, A., Conley, A., Aguirre, J. E., Amblard, A., Auld, R., Beelen, A., Blain, A., Blundell, R., Bock, J., Bradford, C. M., Bridge, C., Brisbin, D., Burgarella, D., Chanial, P., Chapin, E., Christopher, N., Clements, D. L., Cox, P., ... Zmuidzinas, J. (2011). Modeling of the HerMES submillimeter source lensed by a dark matter dominated foreground group of galaxies. The Astrophysical Journal, 738(2). https://doi.org/10.1088/0004-637X/738/2/125

@article{ce396e66dec147678a9e9fd0f6f615ab,

title = "Modeling of the HerMES submillimeter source lensed by a dark matter dominated foreground group of galaxies",

abstract = "We present the results of a gravitational lensing analysis of the bright z s = 2.957 submillimeter galaxy (SMG) HERMES found in the Herschel/SPIRE science demonstration phase data from the Herschel Multi-tiered Extragalactic Survey (HerMES) project. The high-resolution imaging available in optical and near-IR channels, along with CO emission obtained with the Plateau de Bure Interferometer, allows us to precisely estimate the intrinsic source extension and hence estimate the total lensing magnification to be μ = 10.9 ± 0.7. We measure the half-light radius R eff of the source in the rest-frame near-UV and V bands that characterize the unobscured light coming from stars and find R eff, * = [2.0 ± 0.1] kpc, in good agreement with recent studies on the SMG population. This lens model is also used to estimate the size of the gas distribution (R eff, gas = [1.1 ± 0.5] kpc) by mapping back in the source plane the CO (J = 5 → 4) transition line emission. The lens modeling yields a relatively large Einstein radius R Ein = 4farcs10 ± 0farcs02, corresponding to a deflector velocity dispersion of [483 ± 16] km s–1. This shows that HERMES is lensed by a galaxy group-size dark matter halo at redshift z l ~ 0.6. The projected dark matter contribution largely dominates the mass budget within the Einstein radius with f dm(< R Ein) ~ 80%. This fraction reduces to f dm(< R eff, G1 sime 4.5 kpc) ~ 47% within the effective radius of the main deflecting galaxy of stellar mass M *, G1 = [8.5 ± 1.6] × 1011 M ☉. At this smaller scale the dark matter fraction is consistent with results already found for massive lensing ellipticals at z ~ 0.2 from the Sloan Lens ACS Survey.",

keywords = "galaxies: elliptical and lenticular, cD, galaxies: groups: general, galaxies: halos, gravitational lensing: strong, submillimeter: galaxies",

author = "R. Gavazzi and A. Cooray and A. Conley and Aguirre, {J. E.} and A. Amblard and R. Auld and A. Beelen and A. Blain and R. Blundell and J. Bock and Bradford, {C. M.} and C. Bridge and D. Brisbin and D. Burgarella and P. Chanial and E. Chapin and N. Christopher and Clements, {D. L.} and P. Cox and Djorgovski, {S. G.} and Dowell, {C. D.} and S. Eales and L. Earle and Ellsworth-Bowers, {T. P.} and D. Farrah and A. Franceschini and H. Fu and J. Glenn and Solares, {E. A. Gonzalez} and M. Griffin and Gurwell, {M. A.} and M. Halpern and E. Ibar and Ivison, {R. J.} and M. Jarvis and J. Kamenetzky and S. Kim and M. Krips and L. Levenson and R. Lupu and A. Mahabal and Maloney, {P. D.} and C. Maraston and L. Marchetti and G. Marsden and H. Matsuhara and Mortier, {A. M. J.} and E. Murphy and Naylor, {B. J.} and R. Neri and Nguyen, {H. T.} and Oliver, {S. J.} and A. Omont and Page, {M. J.} and A. Papageorgiou and Pearson, {C. P.} and I. Perez-Fournon and M. Pohlen and N. Rangwala and Rawlings, {J. I.} and G. Raymond and D. Riechers and G. Rodighiero and Roseboom, {I. G.} and M. Rowan-Robinson and B. Schulz and Douglas Scott and Scott, {K. S.} and P. Serra and N. Seymour and Shupe, {D. L.} and Smith, {A. J.} and M. Symeonidis and Tugwell, {K. E.} and M. Vaccari and E. Valiante and I. Valtchanov and A. Verma and Vieira, {J. D.} and L. Vigroux and L. Wang and J. Wardlow and D. Wiebe and G. Wright and Xu, {C. K.} and G. Zeimann and M. Zemcov and J. Zmuidzinas",

year = "2011",

month = sep,

day = "10",

doi = "10.1088/0004-637X/738/2/125",

language = "English",

volume = "738",

journal = "The Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2",

}

Gavazzi, R, Cooray, A, Conley, A, Aguirre, JE, Amblard, A, Auld, R, Beelen, A, Blain, A, Blundell, R, Bock, J, Bradford, CM, Bridge, C, Brisbin, D, Burgarella, D, Chanial, P, Chapin, E, Christopher, N, Clements, DL, Cox, P, Djorgovski, SG, Dowell, CD, Eales, S, Earle, L, Ellsworth-Bowers, TP, Farrah, D, Franceschini, A, Fu, H, Glenn, J, Solares, EAG, Griffin, M, Gurwell, MA, Halpern, M, Ibar, E, Ivison, RJ, Jarvis, M, Kamenetzky, J, Kim, S, Krips, M, Levenson, L, Lupu, R, Mahabal, A, Maloney, PD, Maraston, C, Marchetti, L, Marsden, G, Matsuhara, H, Mortier, AMJ, Murphy, E, Naylor, BJ, Neri, R, Nguyen, HT, Oliver, SJ, Omont, A, Page, MJ, Papageorgiou, A, Pearson, CP, Perez-Fournon, I, Pohlen, M, Rangwala, N, Rawlings, JI, Raymond, G, Riechers, D, Rodighiero, G, Roseboom, IG, Rowan-Robinson, M, Schulz, B, Scott, D, Scott, KS, Serra, P, Seymour, N, Shupe, DL, Smith, AJ, Symeonidis, M, Tugwell, KE, Vaccari, M, Valiante, E, Valtchanov, I, Verma, A, Vieira, JD, Vigroux, L, Wang, L, Wardlow, J, Wiebe, D, Wright, G, Xu, CK, Zeimann, G, Zemcov, M & Zmuidzinas, J 2011, 'Modeling of the HerMES submillimeter source lensed by a dark matter dominated foreground group of galaxies', The Astrophysical Journal, vol. 738, no. 2. https://doi.org/10.1088/0004-637X/738/2/125

TY - JOUR

T1 - Modeling of the HerMES submillimeter source lensed by a dark matter dominated foreground group of galaxies

AU - Gavazzi, R.

AU - Cooray, A.

AU - Conley, A.

AU - Aguirre, J. E.

AU - Amblard, A.

AU - Auld, R.

AU - Beelen, A.

AU - Blain, A.

AU - Blundell, R.

AU - Bock, J.

AU - Bradford, C. M.

AU - Bridge, C.

AU - Brisbin, D.

AU - Burgarella, D.

AU - Chanial, P.

AU - Chapin, E.

AU - Christopher, N.

AU - Clements, D. L.

AU - Cox, P.

AU - Djorgovski, S. G.

AU - Dowell, C. D.

AU - Eales, S.

AU - Earle, L.

AU - Ellsworth-Bowers, T. P.

AU - Farrah, D.

AU - Franceschini, A.

AU - Fu, H.

AU - Glenn, J.

AU - Solares, E. A. Gonzalez

AU - Griffin, M.

AU - Gurwell, M. A.

AU - Halpern, M.

AU - Ibar, E.

AU - Ivison, R. J.

AU - Jarvis, M.

AU - Kamenetzky, J.

AU - Kim, S.

AU - Krips, M.

AU - Levenson, L.

AU - Lupu, R.

AU - Mahabal, A.

AU - Maloney, P. D.

AU - Maraston, C.

AU - Marchetti, L.

AU - Marsden, G.

AU - Matsuhara, H.

AU - Mortier, A. M. J.

AU - Murphy, E.

AU - Naylor, B. J.

AU - Neri, R.

AU - Nguyen, H. T.

AU - Oliver, S. J.

AU - Omont, A.

AU - Page, M. J.

AU - Papageorgiou, A.

AU - Pearson, C. P.

AU - Perez-Fournon, I.

AU - Pohlen, M.

AU - Rangwala, N.

AU - Rawlings, J. I.

AU - Raymond, G.

AU - Riechers, D.

AU - Rodighiero, G.

AU - Roseboom, I. G.

AU - Rowan-Robinson, M.

AU - Schulz, B.

AU - Scott, Douglas

AU - Scott, K. S.

AU - Serra, P.

AU - Seymour, N.

AU - Shupe, D. L.

AU - Smith, A. J.

AU - Symeonidis, M.

AU - Tugwell, K. E.

AU - Vaccari, M.

AU - Valiante, E.

AU - Valtchanov, I.

AU - Verma, A.

AU - Vieira, J. D.

AU - Vigroux, L.

AU - Wang, L.

AU - Wardlow, J.

AU - Wiebe, D.

AU - Wright, G.

AU - Xu, C. K.

AU - Zeimann, G.

AU - Zemcov, M.

AU - Zmuidzinas, J.

PY - 2011/9/10

Y1 - 2011/9/10

N2 - We present the results of a gravitational lensing analysis of the bright z s = 2.957 submillimeter galaxy (SMG) HERMES found in the Herschel/SPIRE science demonstration phase data from the Herschel Multi-tiered Extragalactic Survey (HerMES) project. The high-resolution imaging available in optical and near-IR channels, along with CO emission obtained with the Plateau de Bure Interferometer, allows us to precisely estimate the intrinsic source extension and hence estimate the total lensing magnification to be μ = 10.9 ± 0.7. We measure the half-light radius R eff of the source in the rest-frame near-UV and V bands that characterize the unobscured light coming from stars and find R eff, * = [2.0 ± 0.1] kpc, in good agreement with recent studies on the SMG population. This lens model is also used to estimate the size of the gas distribution (R eff, gas = [1.1 ± 0.5] kpc) by mapping back in the source plane the CO (J = 5 → 4) transition line emission. The lens modeling yields a relatively large Einstein radius R Ein = 4farcs10 ± 0farcs02, corresponding to a deflector velocity dispersion of [483 ± 16] km s–1. This shows that HERMES is lensed by a galaxy group-size dark matter halo at redshift z l ~ 0.6. The projected dark matter contribution largely dominates the mass budget within the Einstein radius with f dm(< R Ein) ~ 80%. This fraction reduces to f dm(< R eff, G1 sime 4.5 kpc) ~ 47% within the effective radius of the main deflecting galaxy of stellar mass M *, G1 = [8.5 ± 1.6] × 1011 M ☉. At this smaller scale the dark matter fraction is consistent with results already found for massive lensing ellipticals at z ~ 0.2 from the Sloan Lens ACS Survey.

AB - We present the results of a gravitational lensing analysis of the bright z s = 2.957 submillimeter galaxy (SMG) HERMES found in the Herschel/SPIRE science demonstration phase data from the Herschel Multi-tiered Extragalactic Survey (HerMES) project. The high-resolution imaging available in optical and near-IR channels, along with CO emission obtained with the Plateau de Bure Interferometer, allows us to precisely estimate the intrinsic source extension and hence estimate the total lensing magnification to be μ = 10.9 ± 0.7. We measure the half-light radius R eff of the source in the rest-frame near-UV and V bands that characterize the unobscured light coming from stars and find R eff, * = [2.0 ± 0.1] kpc, in good agreement with recent studies on the SMG population. This lens model is also used to estimate the size of the gas distribution (R eff, gas = [1.1 ± 0.5] kpc) by mapping back in the source plane the CO (J = 5 → 4) transition line emission. The lens modeling yields a relatively large Einstein radius R Ein = 4farcs10 ± 0farcs02, corresponding to a deflector velocity dispersion of [483 ± 16] km s–1. This shows that HERMES is lensed by a galaxy group-size dark matter halo at redshift z l ~ 0.6. The projected dark matter contribution largely dominates the mass budget within the Einstein radius with f dm(< R Ein) ~ 80%. This fraction reduces to f dm(< R eff, G1 sime 4.5 kpc) ~ 47% within the effective radius of the main deflecting galaxy of stellar mass M *, G1 = [8.5 ± 1.6] × 1011 M ☉. At this smaller scale the dark matter fraction is consistent with results already found for massive lensing ellipticals at z ~ 0.2 from the Sloan Lens ACS Survey.

KW - galaxies: elliptical and lenticular, cD

KW - galaxies: groups: general

KW - galaxies: halos

KW - gravitational lensing: strong

KW - submillimeter: galaxies

U2 - 10.1088/0004-637X/738/2/125

DO - 10.1088/0004-637X/738/2/125

M3 - Article

SN - 0004-637X

VL - 738

JO - The Astrophysical Journal

JF - The Astrophysical Journal

IS - 2

ER -

Modeling of the HerMES submillimeter source lensed by a dark matter dominated foreground group of galaxies

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Keywords

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