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HerMES: Candidate Gravitationally Lensed Galaxies and Lensing Statistics at Submillimeter Wavelengths

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HerMES: Candidate Gravitationally Lensed Galaxies and Lensing Statistics at Submillimeter Wavelengths. / Wardlow, Julie L.; Cooray, Asantha; De Bernardis, Francesco et al.
In: The Astrophysical Journal, Vol. 762, No. 1, 01.01.2013, p. 59.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Wardlow, JL, Cooray, A, De Bernardis, F, Amblard, A, Arumugam, V, Aussel, H, Baker, AJ, Béthermin, M, Blundell, R, Bock, J, Boselli, A, Bridge, C, Buat, V, Burgarella, D, Bussmann, RS, Cabrera-Lavers, A, Calanog, J, Carpenter, JM, Casey, CM, Castro-Rodríguez, N, Cava, A, Chanial, P, Chapin, E, Chapman, SC, Clements, DL, Conley, A, Cox, P, Dowell, CD, Dye, S, Eales, S, Farrah, D, Ferrero, P, Franceschini, A, Frayer, DT, Frazer, C, Fu, H, Gavazzi, R, Glenn, J, González Solares, EA, Griffin, M, Gurwell, MA, Harris, AI, Hatziminaoglou, E, Hopwood, R, Hyde, A, Ibar, E, Ivison, RJ, Kim, S, Lagache, G, Levenson, L, Marchetti, L, Marsden, G, Martinez-Navajas, P, Negrello, M, Neri, R, Nguyen, HT, O'Halloran, B, Oliver, SJ, Omont, A, Page, MJ, Panuzzo, P, Papageorgiou, A, Pearson, CP, Pérez-Fournon, I, Pohlen, M, Riechers, D, Rigopoulou, D, Roseboom, IG, Rowan-Robinson, M, Schulz, B, Scott, D, Scoville, N, Seymour, N, Shupe, DL, Smith, AJ, Streblyanska, A, Strom, A, Symeonidis, M, Trichas, M, Vaccari, M, Vieira, JD, Viero, M, Wang, L, Xu, CK, Yan, L & Zemcov, M 2013, 'HerMES: Candidate Gravitationally Lensed Galaxies and Lensing Statistics at Submillimeter Wavelengths', The Astrophysical Journal, vol. 762, no. 1, pp. 59. https://doi.org/10.1088/0004-637X/762/1/59

APA

Wardlow, J. L., Cooray, A., De Bernardis, F., Amblard, A., Arumugam, V., Aussel, H., Baker, A. J., Béthermin, M., Blundell, R., Bock, J., Boselli, A., Bridge, C., Buat, V., Burgarella, D., Bussmann, R. S., Cabrera-Lavers, A., Calanog, J., Carpenter, J. M., Casey, C. M., ... Zemcov, M. (2013). HerMES: Candidate Gravitationally Lensed Galaxies and Lensing Statistics at Submillimeter Wavelengths. The Astrophysical Journal, 762(1), 59. https://doi.org/10.1088/0004-637X/762/1/59

Vancouver

Wardlow JL, Cooray A, De Bernardis F, Amblard A, Arumugam V, Aussel H et al. HerMES: Candidate Gravitationally Lensed Galaxies and Lensing Statistics at Submillimeter Wavelengths. The Astrophysical Journal. 2013 Jan 1;762(1):59. doi: 10.1088/0004-637X/762/1/59

Author

Wardlow, Julie L. ; Cooray, Asantha ; De Bernardis, Francesco et al. / HerMES: Candidate Gravitationally Lensed Galaxies and Lensing Statistics at Submillimeter Wavelengths. In: The Astrophysical Journal. 2013 ; Vol. 762, No. 1. pp. 59.

Bibtex

@article{993cbfe040d1412e86a1054321c00792,
title = "HerMES: Candidate Gravitationally Lensed Galaxies and Lensing Statistics at Submillimeter Wavelengths",
abstract = "We present a list of 13 candidate gravitationally lensed submillimeter galaxies (SMGs) from 95 deg2 of the Herschel Multi-tiered Extragalactic Survey, a surface density of 0.14 ± 0.04 deg-2. The selected sources have 500 μm flux densities (S 500) greater than 100 mJy. Gravitational lensing is confirmed by follow-up observations in 9 of the 13 systems (70%), and the lensing status of the four remaining sources is undetermined. We also present a supplementary sample of 29 (0.31 ± 0.06 deg-2) gravitationally lensed SMG candidates with S 500 = 80-100 mJy, which are expected to contain a higher fraction of interlopers than the primary candidates. The number counts of the candidate lensed galaxies are consistent with a simple statistical model of the lensing rate, which uses a foreground matter distribution, the intrinsic SMG number counts, and an assumed SMG redshift distribution. The model predicts that 32%-74% of our S 500 >= 100 mJy candidates are strongly gravitationally lensed (μ >= 2), with the brightest sources being the most robust; this is consistent with the observational data. Our statistical model also predicts that, on average, lensed galaxies with S 500 = 100 mJy are magnified by factors of ~9, with apparently brighter galaxies having progressively higher average magnification, due to the shape of the intrinsic number counts. 65% of the sources are expected to have intrinsic 500 μm flux densities less than 30 mJy. Thus, samples of strongly gravitationally lensed SMGs, such as those presented here, probe below the nominal Herschel detection limit at 500 μm. They are good targets for the detailed study of the physical conditions in distant dusty, star-forming galaxies, due to the lensing magnification, which can lead to spatial resolutions of ~0.''01 in the source plane.",
keywords = "gravitational lensing: strong, submillimeter: galaxies",
author = "Wardlow, {Julie L.} and Asantha Cooray and {De Bernardis}, Francesco and A. Amblard and V. Arumugam and H. Aussel and Baker, {A. J.} and M. B{\'e}thermin and R. Blundell and J. Bock and A. Boselli and C. Bridge and V. Buat and D. Burgarella and Bussmann, {R. S.} and A. Cabrera-Lavers and J. Calanog and Carpenter, {J. M.} and Casey, {C. M.} and N. Castro-Rodr{\'i}guez and A. Cava and P. Chanial and E. Chapin and Chapman, {S. C.} and Clements, {D. L.} and A. Conley and P. Cox and Dowell, {C. D.} and S. Dye and S. Eales and D. Farrah and P. Ferrero and A. Franceschini and Frayer, {D. T.} and C. Frazer and Hai Fu and R. Gavazzi and J. Glenn and {Gonz{\'a}lez Solares}, {E. A.} and M. Griffin and Gurwell, {M. A.} and Harris, {A. I.} and E. Hatziminaoglou and R. Hopwood and A. Hyde and E. Ibar and Ivison, {R. J.} and S. Kim and G. Lagache and L. Levenson and L. Marchetti and G. Marsden and P. Martinez-Navajas and M. Negrello and R. Neri and Nguyen, {H. T.} and B. O'Halloran and Oliver, {S. J.} and A. Omont and Page, {M. J.} and P. Panuzzo and A. Papageorgiou and Pearson, {C. P.} and I. P{\'e}rez-Fournon and M. Pohlen and D. Riechers and D. Rigopoulou and Roseboom, {I. G.} and M. Rowan-Robinson and B. Schulz and D. Scott and N. Scoville and N. Seymour and Shupe, {D. L.} and Smith, {A. J.} and A. Streblyanska and A. Strom and M. Symeonidis and M. Trichas and M. Vaccari and Vieira, {J. D.} and M. Viero and L. Wang and Xu, {C. K.} and L. Yan and M. Zemcov",
year = "2013",
month = jan,
day = "1",
doi = "10.1088/0004-637X/762/1/59",
language = "English",
volume = "762",
pages = "59",
journal = "The Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing",
number = "1",

}

RIS

TY - JOUR

T1 - HerMES: Candidate Gravitationally Lensed Galaxies and Lensing Statistics at Submillimeter Wavelengths

AU - Wardlow, Julie L.

AU - Cooray, Asantha

AU - De Bernardis, Francesco

AU - Amblard, A.

AU - Arumugam, V.

AU - Aussel, H.

AU - Baker, A. J.

AU - Béthermin, M.

AU - Blundell, R.

AU - Bock, J.

AU - Boselli, A.

AU - Bridge, C.

AU - Buat, V.

AU - Burgarella, D.

AU - Bussmann, R. S.

AU - Cabrera-Lavers, A.

AU - Calanog, J.

AU - Carpenter, J. M.

AU - Casey, C. M.

AU - Castro-Rodríguez, N.

AU - Cava, A.

AU - Chanial, P.

AU - Chapin, E.

AU - Chapman, S. C.

AU - Clements, D. L.

AU - Conley, A.

AU - Cox, P.

AU - Dowell, C. D.

AU - Dye, S.

AU - Eales, S.

AU - Farrah, D.

AU - Ferrero, P.

AU - Franceschini, A.

AU - Frayer, D. T.

AU - Frazer, C.

AU - Fu, Hai

AU - Gavazzi, R.

AU - Glenn, J.

AU - González Solares, E. A.

AU - Griffin, M.

AU - Gurwell, M. A.

AU - Harris, A. I.

AU - Hatziminaoglou, E.

AU - Hopwood, R.

AU - Hyde, A.

AU - Ibar, E.

AU - Ivison, R. J.

AU - Kim, S.

AU - Lagache, G.

AU - Levenson, L.

AU - Marchetti, L.

AU - Marsden, G.

AU - Martinez-Navajas, P.

AU - Negrello, M.

AU - Neri, R.

AU - Nguyen, H. T.

AU - O'Halloran, B.

AU - Oliver, S. J.

AU - Omont, A.

AU - Page, M. J.

AU - Panuzzo, P.

AU - Papageorgiou, A.

AU - Pearson, C. P.

AU - Pérez-Fournon, I.

AU - Pohlen, M.

AU - Riechers, D.

AU - Rigopoulou, D.

AU - Roseboom, I. G.

AU - Rowan-Robinson, M.

AU - Schulz, B.

AU - Scott, D.

AU - Scoville, N.

AU - Seymour, N.

AU - Shupe, D. L.

AU - Smith, A. J.

AU - Streblyanska, A.

AU - Strom, A.

AU - Symeonidis, M.

AU - Trichas, M.

AU - Vaccari, M.

AU - Vieira, J. D.

AU - Viero, M.

AU - Wang, L.

AU - Xu, C. K.

AU - Yan, L.

AU - Zemcov, M.

PY - 2013/1/1

Y1 - 2013/1/1

N2 - We present a list of 13 candidate gravitationally lensed submillimeter galaxies (SMGs) from 95 deg2 of the Herschel Multi-tiered Extragalactic Survey, a surface density of 0.14 ± 0.04 deg-2. The selected sources have 500 μm flux densities (S 500) greater than 100 mJy. Gravitational lensing is confirmed by follow-up observations in 9 of the 13 systems (70%), and the lensing status of the four remaining sources is undetermined. We also present a supplementary sample of 29 (0.31 ± 0.06 deg-2) gravitationally lensed SMG candidates with S 500 = 80-100 mJy, which are expected to contain a higher fraction of interlopers than the primary candidates. The number counts of the candidate lensed galaxies are consistent with a simple statistical model of the lensing rate, which uses a foreground matter distribution, the intrinsic SMG number counts, and an assumed SMG redshift distribution. The model predicts that 32%-74% of our S 500 >= 100 mJy candidates are strongly gravitationally lensed (μ >= 2), with the brightest sources being the most robust; this is consistent with the observational data. Our statistical model also predicts that, on average, lensed galaxies with S 500 = 100 mJy are magnified by factors of ~9, with apparently brighter galaxies having progressively higher average magnification, due to the shape of the intrinsic number counts. 65% of the sources are expected to have intrinsic 500 μm flux densities less than 30 mJy. Thus, samples of strongly gravitationally lensed SMGs, such as those presented here, probe below the nominal Herschel detection limit at 500 μm. They are good targets for the detailed study of the physical conditions in distant dusty, star-forming galaxies, due to the lensing magnification, which can lead to spatial resolutions of ~0.''01 in the source plane.

AB - We present a list of 13 candidate gravitationally lensed submillimeter galaxies (SMGs) from 95 deg2 of the Herschel Multi-tiered Extragalactic Survey, a surface density of 0.14 ± 0.04 deg-2. The selected sources have 500 μm flux densities (S 500) greater than 100 mJy. Gravitational lensing is confirmed by follow-up observations in 9 of the 13 systems (70%), and the lensing status of the four remaining sources is undetermined. We also present a supplementary sample of 29 (0.31 ± 0.06 deg-2) gravitationally lensed SMG candidates with S 500 = 80-100 mJy, which are expected to contain a higher fraction of interlopers than the primary candidates. The number counts of the candidate lensed galaxies are consistent with a simple statistical model of the lensing rate, which uses a foreground matter distribution, the intrinsic SMG number counts, and an assumed SMG redshift distribution. The model predicts that 32%-74% of our S 500 >= 100 mJy candidates are strongly gravitationally lensed (μ >= 2), with the brightest sources being the most robust; this is consistent with the observational data. Our statistical model also predicts that, on average, lensed galaxies with S 500 = 100 mJy are magnified by factors of ~9, with apparently brighter galaxies having progressively higher average magnification, due to the shape of the intrinsic number counts. 65% of the sources are expected to have intrinsic 500 μm flux densities less than 30 mJy. Thus, samples of strongly gravitationally lensed SMGs, such as those presented here, probe below the nominal Herschel detection limit at 500 μm. They are good targets for the detailed study of the physical conditions in distant dusty, star-forming galaxies, due to the lensing magnification, which can lead to spatial resolutions of ~0.''01 in the source plane.

KW - gravitational lensing: strong

KW - submillimeter: galaxies

U2 - 10.1088/0004-637X/762/1/59

DO - 10.1088/0004-637X/762/1/59

M3 - Journal article

VL - 762

SP - 59

JO - The Astrophysical Journal

JF - The Astrophysical Journal

SN - 0004-637X

IS - 1

ER -