GREEN BANK TELESCOPE ZPECTROMETER CO(1-0) OBSERVATIONS OF THE STRONGLY LENSED SUBMILLIMETER GALAXIES FROM THE HERSCHEL ATLAS

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

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

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

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

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 high-redshift 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) x10(10) M-circle dot, corrected for lens amplification and assuming a conversion factor of alpha = 0.8M(circle dot) (Kkm s-(1) pc(2))(-1). We find typical L(IR)/L'(CO) ratios of 120 +/- 40 and 140 +/- 50L(circle dot) (Kkm s(-1) pc(2))(-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
Article number	L22
Pages (from-to)	-
Number of pages	6
Journal	Astrophysical Journal Letters
Volume	726
Issue number	2
DOIs	https://doi.org/10.1088/2041-8205/726/2/L22
Publication status	Published - 10 Jan 2011

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10.1088/2041-8205/726/2/L22

http://adsabs.harvard.edu/abs/2011ApJ...726L..22F

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Frayer, D. T., Harris, A. I., Baker, A. J., Ivison, R. J., Smail, I., Negrello, M., Maddalena, R., Aretxaga, I., Baes, M., Birkinshaw, M., Bonfield, D. G., Burgarella, D., Buttiglione, S., Cava, A., Clements, D. L., Cooray, A., Dannerbauer, H., Dariush, A., De Zotti, G., ... Verma, A. (2011). GREEN BANK TELESCOPE ZPECTROMETER CO(1-0) OBSERVATIONS OF THE STRONGLY LENSED SUBMILLIMETER GALAXIES FROM THE HERSCHEL ATLAS. Astrophysical Journal Letters, 726(2), -. Article L22. https://doi.org/10.1088/2041-8205/726/2/L22

@article{72bc132a88a84bbbb1d2aa913b470356,

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 high-redshift 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) x10(10) M-circle dot, corrected for lens amplification and assuming a conversion factor of alpha = 0.8M(circle dot) (Kkm s-(1) pc(2))(-1). We find typical L(IR)/L'(CO) ratios of 120 +/- 40 and 140 +/- 50L(circle dot) (Kkm s(-1) pc(2))(-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.",

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

year = "2011",

month = jan,

day = "10",

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

language = "English",

volume = "726",

pages = "--",

journal = "Astrophysical Journal Letters",

issn = "2041-8205",

publisher = "IOP Publishing",

number = "2",

}

Frayer, DT, Harris, AI, Baker, AJ, Ivison, RJ, Smail, I, Negrello, M, Maddalena, R, Aretxaga, I, Baes, M, Birkinshaw, M, Bonfield, DG, Burgarella, D, Buttiglione, S, Cava, A, Clements, DL, Cooray, A, Dannerbauer, H, Dariush, A, De Zotti, G, Dunlop, JS, Dunne, L, Dye, S, Eales, S, Fritz, J, Gonzalez-Nuevo, J, Herranz, D, Hopwood, R, Hughes, DH, Ibar, E, Jarvis, MJ, Lagache, G, Leeuw, LL, Lopez-Caniego, M, Maddox, S, Michallowski, MJ, Omont, A, Pohlen, M, Rigby, E, Rodighiero, G, Scott, D, Serjeant, S, Smith, DJB, Swinbank, AM, Temi, P, Thompson, MA, Valtchanov, I, van der Werf, PP & Verma, A 2011, 'GREEN BANK TELESCOPE ZPECTROMETER CO(1-0) OBSERVATIONS OF THE STRONGLY LENSED SUBMILLIMETER GALAXIES FROM THE HERSCHEL ATLAS', Astrophysical Journal Letters, vol. 726, no. 2, L22, pp. -. 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 - Frayer, D. T.

AU - Harris, A. I.

AU - Baker, A. J.

AU - Ivison, R. J.

AU - Smail, Ian

AU - Negrello, M.

AU - Maddalena, R.

AU - Aretxaga, I.

AU - Baes, M.

AU - Birkinshaw, M.

AU - Bonfield, D. G.

AU - Burgarella, D.

AU - Buttiglione, S.

AU - Cava, A.

AU - Clements, D. L.

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, J.

AU - Gonzalez-Nuevo, J.

AU - Herranz, D.

AU - Hopwood, R.

AU - Hughes, D. H.

AU - Ibar, E.

AU - Jarvis, M. J.

AU - Lagache, G.

AU - Leeuw, L. 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, D. J. B.

AU - Swinbank, A. M.

AU - Temi, P.

AU - Thompson, M. A.

AU - Valtchanov, I.

AU - van der Werf, P. P.

AU - Verma, A.

PY - 2011/1/10

Y1 - 2011/1/10

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 high-redshift 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) x10(10) M-circle dot, corrected for lens amplification and assuming a conversion factor of alpha = 0.8M(circle dot) (Kkm s-(1) pc(2))(-1). We find typical L(IR)/L'(CO) ratios of 120 +/- 40 and 140 +/- 50L(circle dot) (Kkm s(-1) pc(2))(-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 high-redshift 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) x10(10) M-circle dot, corrected for lens amplification and assuming a conversion factor of alpha = 0.8M(circle dot) (Kkm s-(1) pc(2))(-1). We find typical L(IR)/L'(CO) ratios of 120 +/- 40 and 140 +/- 50L(circle dot) (Kkm s(-1) pc(2))(-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.

UR - http://www.scopus.com/inward/record.url?scp=79960278308&partnerID=8YFLogxK

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

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

M3 - Article

SN - 2041-8205

VL - 726

SP - -

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 2

M1 - L22

ER -

GREEN BANK TELESCOPE ZPECTROMETER CO(1-0) OBSERVATIONS OF THE STRONGLY LENSED SUBMILLIMETER GALAXIES FROM THE HERSCHEL ATLAS

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