Green Bank Telescope Zpectrometer CO(1-0) observations of the strongly lensed submillimeter galaxies From the Herschel ATLAS

A. Harris; A.J. Baker; R.J. Ivison; I. Smail; M. Negrello; R. Maddalena; I. Aretxaga; M. Baes; M. Birkinshaw; D. Bonfield; D. Burgarella; S. Buttiglione; A. Cava; D. Clements; A. Cooray; H. Dannerbauer; A. Dariush; G. de Zotti; J.S. Dunlop; L. Dunne; S. Dye; S. Eales; D.H. Fritz; E. Ibar; M.J. Jarvis; G. Lagache; L. Leeuw; M. Lopez-Caniego; S. Maddox; M.J. Michallowski; A. Omont; M. Pohlen; E. Rigby; G. Rodighiero; D. Scott; S. Serjeant; Daniel Smith; A.M. Swinbank; P. Temi; M.A. Thompson; I. Valtchanov; P. van der Werf; A. Verma; D. Frayer

doi:10.1088/2041-8205/726/2/L22

Green Bank Telescope Zpectrometer CO(1-0) observations of the strongly lensed submillimeter galaxies From the Herschel ATLAS

A. Harris, A.J. Baker, R.J. Ivison, I. Smail, M. Negrello, R. Maddalena, I. Aretxaga, M. Baes, M. Birkinshaw, D. Bonfield, D. Burgarella, S. Buttiglione, A. Cava, D. Clements, A. Cooray, H. Dannerbauer, A. Dariush, G. de Zotti, J.S. Dunlop, L. DunneS. Dye, S. Eales, D.H. Fritz, E. Ibar, M.J. Jarvis, G. Lagache, L. Leeuw, M. Lopez-Caniego, S. Maddox, M.J. Michallowski, A. Omont, M. Pohlen, E. Rigby, G. Rodighiero, D. Scott, S. Serjeant, Daniel Smith, A.M. Swinbank, P. Temi, M.A. Thompson, I. Valtchanov, P. van der Werf, A. Verma, D. Frayer

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Abstract

The Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) has uncovered a population of strongly lensed submillimeter galaxies (SMGs). The Zpectrometer instrument on the Green Bank Telescope (GBT) was used to measure the redshifts and constrain the masses of the cold molecular gas reservoirs for two candidate highredshift lensed sources. We derive CO(1-0) redshifts of z = 3.042 ± 0.001 and z = 2.625 ± 0.001, and measure molecular gas masses of (1-3) ×1010M⊙, corrected for lens amplification and assuming a conversion factor of α = 0.8 M ⊙ (Kkm s-1 pc2)-1. We find typical L(IR)/L'(CO) ratios of 120 ±40 and 140±50L ⊙ (Kkm s-1 pc2)-1, which are consistent with those found for local ultraluminous infrared galaxies (ULIRGs) and other high-redshift SMGs. From analysis of published data, we find no evidence for enhanced L(IR)/L'(CO(1-0)) ratios for the SMG population in comparison to local ULIRGs. The GBT results highlight the power of using the CO lines to derive blind redshifts, which is challenging for the SMGs at optical wavelengths given their high obscuration.

Original language	English
Journal	The Astrophysical Journal
Volume	726
Issue number	2 Part II
DOIs	https://doi.org/10.1088/2041-8205/726/2/L22
Publication status	Published - 2011

Keywords

galaxies: evolution
galaxies: formation
galaxies: individual (SDP.81: H-ATLAS J090311.6+003906, SDP.130: H-ATLAS J091305.0 005343)
galaxies: starburst

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Harris, A., Baker, A. J., Ivison, R. J., Smail, I., Negrello, M., Maddalena, R., Aretxaga, I., Baes, M., Birkinshaw, M., Bonfield, D., Burgarella, D., Buttiglione, S., Cava, A., Clements, D., Cooray, A., Dannerbauer, H., Dariush, A., de Zotti, G., Dunlop, J. S., ... Frayer, D. (2011). Green Bank Telescope Zpectrometer CO(1-0) observations of the strongly lensed submillimeter galaxies From the Herschel ATLAS. The Astrophysical Journal, 726(2 Part II). https://doi.org/10.1088/2041-8205/726/2/L22

@article{85caeb5e32f946b1ac5754109705d847,

title = "Green Bank Telescope Zpectrometer CO(1-0) observations of the strongly lensed submillimeter galaxies From the Herschel ATLAS",

abstract = "The Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) has uncovered a population of strongly lensed submillimeter galaxies (SMGs). The Zpectrometer instrument on the Green Bank Telescope (GBT) was used to measure the redshifts and constrain the masses of the cold molecular gas reservoirs for two candidate highredshift lensed sources. We derive CO(1-0) redshifts of z = 3.042 ± 0.001 and z = 2.625 ± 0.001, and measure molecular gas masses of (1-3) ×1010M⊙, corrected for lens amplification and assuming a conversion factor of α = 0.8 M ⊙ (Kkm s-1 pc2)-1. We find typical L(IR)/L'(CO) ratios of 120 ±40 and 140±50L ⊙ (Kkm s-1 pc2)-1, which are consistent with those found for local ultraluminous infrared galaxies (ULIRGs) and other high-redshift SMGs. From analysis of published data, we find no evidence for enhanced L(IR)/L'(CO(1-0)) ratios for the SMG population in comparison to local ULIRGs. The GBT results highlight the power of using the CO lines to derive blind redshifts, which is challenging for the SMGs at optical wavelengths given their high obscuration.",

keywords = "galaxies: evolution, galaxies: formation, galaxies: individual (SDP.81: H-ATLAS J090311.6+003906, SDP.130: H-ATLAS J091305.0 005343), galaxies: starburst",

author = "A. Harris and A.J. Baker and R.J. Ivison and I. Smail and M. Negrello and R. Maddalena and I. Aretxaga and M. Baes and M. Birkinshaw and D. Bonfield and D. Burgarella and S. Buttiglione and A. Cava and D. Clements and A. Cooray and H. Dannerbauer and A. Dariush and {de Zotti}, G. and J.S. Dunlop and L. Dunne and S. Dye and S. Eales and D.H. Fritz and E. Ibar and M.J. Jarvis and G. Lagache and L. Leeuw and M. Lopez-Caniego and S. Maddox and M.J. Michallowski and A. Omont and M. Pohlen and E. Rigby and G. Rodighiero and D. Scott and S. Serjeant and Daniel Smith and A.M. Swinbank and P. Temi and M.A. Thompson and I. Valtchanov and {van der Werf}, P. and A. Verma and D. Frayer",

note = "{\textquoteleft}In these times, during the rise in the popularity of institutional repositories, the Society does not forbid authors from depositing their work in such repositories. However, the AAS regards the deposit of scholarly work in such repositories to be a decision of the individual scholar, as long as the individual's actions respect the diligence of the journals and their reviewers.{\textquoteright} Original article can be found at: http://iopscience.iop.org/ Copyright American Astronomical Society",

year = "2011",

doi = "10.1088/2041-8205/726/2/L22",

language = "English",

volume = "726",

journal = "The Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "2 Part II",

}

Harris, A, Baker, AJ, Ivison, RJ, Smail, I, Negrello, M, Maddalena, R, Aretxaga, I, Baes, M, Birkinshaw, M, Bonfield, D, Burgarella, D, Buttiglione, S, Cava, A, Clements, D, Cooray, A, Dannerbauer, H, Dariush, A, de Zotti, G, Dunlop, JS, Dunne, L, Dye, S, Eales, S, Fritz, DH, Ibar, E, Jarvis, MJ, Lagache, G, Leeuw, L, Lopez-Caniego, M, Maddox, S, Michallowski, MJ, Omont, A, Pohlen, M, Rigby, E, Rodighiero, G, Scott, D, Serjeant, S, Smith, D, Swinbank, AM, Temi, P, Thompson, MA, Valtchanov, I, van der Werf, P, Verma, A & Frayer, D 2011, 'Green Bank Telescope Zpectrometer CO(1-0) observations of the strongly lensed submillimeter galaxies From the Herschel ATLAS', The Astrophysical Journal, vol. 726, no. 2 Part II. https://doi.org/10.1088/2041-8205/726/2/L22

TY - JOUR

T1 - Green Bank Telescope Zpectrometer CO(1-0) observations of the strongly lensed submillimeter galaxies From the Herschel ATLAS

AU - Harris, A.

AU - Baker, A.J.

AU - Ivison, R.J.

AU - Smail, I.

AU - Negrello, M.

AU - Maddalena, R.

AU - Aretxaga, I.

AU - Baes, M.

AU - Birkinshaw, M.

AU - Bonfield, D.

AU - Burgarella, D.

AU - Buttiglione, S.

AU - Cava, A.

AU - Clements, D.

AU - Cooray, A.

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, D.H.

AU - Ibar, E.

AU - Jarvis, M.J.

AU - Lagache, G.

AU - Leeuw, L.

AU - Lopez-Caniego, M.

AU - Maddox, S.

AU - Michallowski, M.J.

AU - Omont, A.

AU - Pohlen, M.

AU - Rigby, E.

AU - Rodighiero, G.

AU - Scott, D.

AU - Serjeant, S.

AU - Smith, Daniel

AU - Swinbank, A.M.

AU - Temi, P.

AU - Thompson, M.A.

AU - Valtchanov, I.

AU - van der Werf, P.

AU - Verma, A.

AU - Frayer, D.

N1 - ‘In these times, during the rise in the popularity of institutional repositories, the Society does not forbid authors from depositing their work in such repositories. However, the AAS regards the deposit of scholarly work in such repositories to be a decision of the individual scholar, as long as the individual's actions respect the diligence of the journals and their reviewers.’ Original article can be found at: http://iopscience.iop.org/ Copyright American Astronomical Society

PY - 2011

Y1 - 2011

N2 - The Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) has uncovered a population of strongly lensed submillimeter galaxies (SMGs). The Zpectrometer instrument on the Green Bank Telescope (GBT) was used to measure the redshifts and constrain the masses of the cold molecular gas reservoirs for two candidate highredshift lensed sources. We derive CO(1-0) redshifts of z = 3.042 ± 0.001 and z = 2.625 ± 0.001, and measure molecular gas masses of (1-3) ×1010M⊙, corrected for lens amplification and assuming a conversion factor of α = 0.8 M ⊙ (Kkm s-1 pc2)-1. We find typical L(IR)/L'(CO) ratios of 120 ±40 and 140±50L ⊙ (Kkm s-1 pc2)-1, which are consistent with those found for local ultraluminous infrared galaxies (ULIRGs) and other high-redshift SMGs. From analysis of published data, we find no evidence for enhanced L(IR)/L'(CO(1-0)) ratios for the SMG population in comparison to local ULIRGs. The GBT results highlight the power of using the CO lines to derive blind redshifts, which is challenging for the SMGs at optical wavelengths given their high obscuration.

AB - The Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) has uncovered a population of strongly lensed submillimeter galaxies (SMGs). The Zpectrometer instrument on the Green Bank Telescope (GBT) was used to measure the redshifts and constrain the masses of the cold molecular gas reservoirs for two candidate highredshift lensed sources. We derive CO(1-0) redshifts of z = 3.042 ± 0.001 and z = 2.625 ± 0.001, and measure molecular gas masses of (1-3) ×1010M⊙, corrected for lens amplification and assuming a conversion factor of α = 0.8 M ⊙ (Kkm s-1 pc2)-1. We find typical L(IR)/L'(CO) ratios of 120 ±40 and 140±50L ⊙ (Kkm s-1 pc2)-1, which are consistent with those found for local ultraluminous infrared galaxies (ULIRGs) and other high-redshift SMGs. From analysis of published data, we find no evidence for enhanced L(IR)/L'(CO(1-0)) ratios for the SMG population in comparison to local ULIRGs. The GBT results highlight the power of using the CO lines to derive blind redshifts, which is challenging for the SMGs at optical wavelengths given their high obscuration.

KW - galaxies: evolution

KW - galaxies: formation

KW - galaxies: individual (SDP.81: H-ATLAS J090311.6+003906, SDP.130: H-ATLAS J091305.0 005343)

KW - galaxies: starburst

U2 - 10.1088/2041-8205/726/2/L22

DO - 10.1088/2041-8205/726/2/L22

M3 - Article

SN - 0004-637X

VL - 726

JO - The Astrophysical Journal

JF - The Astrophysical Journal

IS - 2 Part II

ER -

Green Bank Telescope Zpectrometer CO(1-0) observations of the strongly lensed submillimeter galaxies From the Herschel ATLAS

Abstract

Keywords

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