FIRST RESULTS from COPSS: The CO POWER SPECTRUM SURVEY

Garrett K. Keating, Geoffrey C. Bower, Daniel P Marrone, David R. Deboer, Carl Heiles, Tzu Ching Chang, John E. Carlstrom, Christopher H. Greer, David Hawkins, James W. Lamb, Erik Leitch, Amber D. Miller, Stephen Muchovej, David P. Woody

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We present constraints on the abundance of carbon monoxide in the early universe from the CO Power Spectrum Survey. We utilize a data set collected between 2005 and 2008 using the Sunyaev-Zel'dovich Array (SZA), which was previously used to measure arcminute-scale fluctuations of the cosmic microwave background. This data set features observations of 44 fields, covering an effective area of 1.7 square degrees, over a frequency range of 27-35 GHz. Using the technique of intensity mapping, we are able to probe the CO(1-0) transition, with sensitivity to spatial modes between k = 0.5-2 h Mpc-1 over a range in redshift of z = 2.3-3.3, spanning a comoving volume of 3.6 ×106 h-3 Mpc3. We demonstrate our ability to mitigate foregrounds, and present estimates of the impact of continuum sources on our measurement. We constrain the CO power spectrum to PCO <2.6 ×104 μK2 (h-1 Mpc)3, or Δ2 CO(k = 1 h Mpc-1) <1.3 ×103 μK2, at 95% confidence. This limit resides near optimistic predictions for the CO power spectrum. Under the assumption that CO emission is proportional to halo mass during bursts of active star formation, this corresponds to a limit on the ratio of CO(1-0) luminosity to host halo mass of ACO <1.2 ×10-5 Lo Mo -1. Further assuming a Milky Way-like conversion factor between CO luminosity and molecular gas mass (αCO = 4.3 Mo (K km s-1 pc-2)-1), we constrain the global density of molecular gas to .

Original languageEnglish (US)
Article number140
JournalAstrophysical Journal
Volume814
Issue number2
DOIs
StatePublished - Dec 1 2015

Fingerprint

power spectra
molecular gases
halos
luminosity
gas
carbon monoxide
star formation
confidence
bursts
coverings
universe
frequency ranges
probe
continuums
microwaves
probes
sensitivity
estimates
prediction
predictions

Keywords

  • galaxies: evolution
  • galaxies: high-redshift
  • ISM: molecules
  • methods: statistical

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Keating, G. K., Bower, G. C., Marrone, D. P., Deboer, D. R., Heiles, C., Chang, T. C., ... Woody, D. P. (2015). FIRST RESULTS from COPSS: The CO POWER SPECTRUM SURVEY. Astrophysical Journal, 814(2), [140]. https://doi.org/10.1088/0004-637X/814/2/140

FIRST RESULTS from COPSS : The CO POWER SPECTRUM SURVEY. / Keating, Garrett K.; Bower, Geoffrey C.; Marrone, Daniel P; Deboer, David R.; Heiles, Carl; Chang, Tzu Ching; Carlstrom, John E.; Greer, Christopher H.; Hawkins, David; Lamb, James W.; Leitch, Erik; Miller, Amber D.; Muchovej, Stephen; Woody, David P.

In: Astrophysical Journal, Vol. 814, No. 2, 140, 01.12.2015.

Research output: Contribution to journalArticle

Keating, GK, Bower, GC, Marrone, DP, Deboer, DR, Heiles, C, Chang, TC, Carlstrom, JE, Greer, CH, Hawkins, D, Lamb, JW, Leitch, E, Miller, AD, Muchovej, S & Woody, DP 2015, 'FIRST RESULTS from COPSS: The CO POWER SPECTRUM SURVEY', Astrophysical Journal, vol. 814, no. 2, 140. https://doi.org/10.1088/0004-637X/814/2/140
Keating GK, Bower GC, Marrone DP, Deboer DR, Heiles C, Chang TC et al. FIRST RESULTS from COPSS: The CO POWER SPECTRUM SURVEY. Astrophysical Journal. 2015 Dec 1;814(2). 140. https://doi.org/10.1088/0004-637X/814/2/140
Keating, Garrett K. ; Bower, Geoffrey C. ; Marrone, Daniel P ; Deboer, David R. ; Heiles, Carl ; Chang, Tzu Ching ; Carlstrom, John E. ; Greer, Christopher H. ; Hawkins, David ; Lamb, James W. ; Leitch, Erik ; Miller, Amber D. ; Muchovej, Stephen ; Woody, David P. / FIRST RESULTS from COPSS : The CO POWER SPECTRUM SURVEY. In: Astrophysical Journal. 2015 ; Vol. 814, No. 2.
@article{468b7bca5ec945539f91e5a936b4f6d0,
title = "FIRST RESULTS from COPSS: The CO POWER SPECTRUM SURVEY",
abstract = "We present constraints on the abundance of carbon monoxide in the early universe from the CO Power Spectrum Survey. We utilize a data set collected between 2005 and 2008 using the Sunyaev-Zel'dovich Array (SZA), which was previously used to measure arcminute-scale fluctuations of the cosmic microwave background. This data set features observations of 44 fields, covering an effective area of 1.7 square degrees, over a frequency range of 27-35 GHz. Using the technique of intensity mapping, we are able to probe the CO(1-0) transition, with sensitivity to spatial modes between k = 0.5-2 h Mpc-1 over a range in redshift of z = 2.3-3.3, spanning a comoving volume of 3.6 ×106 h-3 Mpc3. We demonstrate our ability to mitigate foregrounds, and present estimates of the impact of continuum sources on our measurement. We constrain the CO power spectrum to PCO <2.6 ×104 μK2 (h-1 Mpc)3, or Δ2 CO(k = 1 h Mpc-1) <1.3 ×103 μK2, at 95{\%} confidence. This limit resides near optimistic predictions for the CO power spectrum. Under the assumption that CO emission is proportional to halo mass during bursts of active star formation, this corresponds to a limit on the ratio of CO(1-0) luminosity to host halo mass of ACO <1.2 ×10-5 Lo Mo -1. Further assuming a Milky Way-like conversion factor between CO luminosity and molecular gas mass (αCO = 4.3 Mo (K km s-1 pc-2)-1), we constrain the global density of molecular gas to .",
keywords = "galaxies: evolution, galaxies: high-redshift, ISM: molecules, methods: statistical",
author = "Keating, {Garrett K.} and Bower, {Geoffrey C.} and Marrone, {Daniel P} and Deboer, {David R.} and Carl Heiles and Chang, {Tzu Ching} and Carlstrom, {John E.} and Greer, {Christopher H.} and David Hawkins and Lamb, {James W.} and Erik Leitch and Miller, {Amber D.} and Stephen Muchovej and Woody, {David P.}",
year = "2015",
month = "12",
day = "1",
doi = "10.1088/0004-637X/814/2/140",
language = "English (US)",
volume = "814",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "2",

}

TY - JOUR

T1 - FIRST RESULTS from COPSS

T2 - The CO POWER SPECTRUM SURVEY

AU - Keating, Garrett K.

AU - Bower, Geoffrey C.

AU - Marrone, Daniel P

AU - Deboer, David R.

AU - Heiles, Carl

AU - Chang, Tzu Ching

AU - Carlstrom, John E.

AU - Greer, Christopher H.

AU - Hawkins, David

AU - Lamb, James W.

AU - Leitch, Erik

AU - Miller, Amber D.

AU - Muchovej, Stephen

AU - Woody, David P.

PY - 2015/12/1

Y1 - 2015/12/1

N2 - We present constraints on the abundance of carbon monoxide in the early universe from the CO Power Spectrum Survey. We utilize a data set collected between 2005 and 2008 using the Sunyaev-Zel'dovich Array (SZA), which was previously used to measure arcminute-scale fluctuations of the cosmic microwave background. This data set features observations of 44 fields, covering an effective area of 1.7 square degrees, over a frequency range of 27-35 GHz. Using the technique of intensity mapping, we are able to probe the CO(1-0) transition, with sensitivity to spatial modes between k = 0.5-2 h Mpc-1 over a range in redshift of z = 2.3-3.3, spanning a comoving volume of 3.6 ×106 h-3 Mpc3. We demonstrate our ability to mitigate foregrounds, and present estimates of the impact of continuum sources on our measurement. We constrain the CO power spectrum to PCO <2.6 ×104 μK2 (h-1 Mpc)3, or Δ2 CO(k = 1 h Mpc-1) <1.3 ×103 μK2, at 95% confidence. This limit resides near optimistic predictions for the CO power spectrum. Under the assumption that CO emission is proportional to halo mass during bursts of active star formation, this corresponds to a limit on the ratio of CO(1-0) luminosity to host halo mass of ACO <1.2 ×10-5 Lo Mo -1. Further assuming a Milky Way-like conversion factor between CO luminosity and molecular gas mass (αCO = 4.3 Mo (K km s-1 pc-2)-1), we constrain the global density of molecular gas to .

AB - We present constraints on the abundance of carbon monoxide in the early universe from the CO Power Spectrum Survey. We utilize a data set collected between 2005 and 2008 using the Sunyaev-Zel'dovich Array (SZA), which was previously used to measure arcminute-scale fluctuations of the cosmic microwave background. This data set features observations of 44 fields, covering an effective area of 1.7 square degrees, over a frequency range of 27-35 GHz. Using the technique of intensity mapping, we are able to probe the CO(1-0) transition, with sensitivity to spatial modes between k = 0.5-2 h Mpc-1 over a range in redshift of z = 2.3-3.3, spanning a comoving volume of 3.6 ×106 h-3 Mpc3. We demonstrate our ability to mitigate foregrounds, and present estimates of the impact of continuum sources on our measurement. We constrain the CO power spectrum to PCO <2.6 ×104 μK2 (h-1 Mpc)3, or Δ2 CO(k = 1 h Mpc-1) <1.3 ×103 μK2, at 95% confidence. This limit resides near optimistic predictions for the CO power spectrum. Under the assumption that CO emission is proportional to halo mass during bursts of active star formation, this corresponds to a limit on the ratio of CO(1-0) luminosity to host halo mass of ACO <1.2 ×10-5 Lo Mo -1. Further assuming a Milky Way-like conversion factor between CO luminosity and molecular gas mass (αCO = 4.3 Mo (K km s-1 pc-2)-1), we constrain the global density of molecular gas to .

KW - galaxies: evolution

KW - galaxies: high-redshift

KW - ISM: molecules

KW - methods: statistical

UR - http://www.scopus.com/inward/record.url?scp=84948800175&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84948800175&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/814/2/140

DO - 10.1088/0004-637X/814/2/140

M3 - Article

AN - SCOPUS:84948800175

VL - 814

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 2

M1 - 140

ER -