The large-scale atomic and molecular gas in the Circinus galaxy (2008)
Curran, Stephen J., Koribalski, Barbel S., Bains, Indra
Abstract not available.
Curran, Stephen J., Whiting, Matthew T., Wiklind, Tommy, Webb, J. K., Murphy, M. T., Purcell, Cormac R.
We present the results of a z≥ 2.9 survey for H i 21-cm and molecular absorption in the hosts of radio quasars using the Giant Metrewave Radio Telescope and the Tidbinbilla 70-m telescope....
The large-scale atomic and molecular gas in the Circinus galaxy (2008)
Curran, Stephen J., Koribalski, Barbel S., Bains, Indra
Abstract not available.
Curran, Stephen J., Whiting, Matthew T., Wiklind, Tommy, Webb, J. K., Murphy, M. T., Purcell, Cormac R.
We present the results of a z≥ 2.9 survey for H i 21-cm and molecular absorption in the hosts of radio quasars using the Giant Metrewave Radio Telescope and the Tidbinbilla 70-m telescope....
A search for propylene oxide and glycine in Sagittarius B2 (LMH) and Orion (2007)
Cunningham, Maria R., Jones, Paul A., Godfrey, Peter D., Cragg, Dinah M., Bains, Indra, Burton, Michael G., ...
We have used the Mopra Telescope to search for glycine and the simple chiral molecule propylene oxide in the Sgr B2 (LMH) and Orion KL, in the 3-mm band. We have not detected either species, but have...
A search for propylene oxide and glycine in Sagittarius B2 (LMH) and Orion (2007)
Cunningham, Maria R., Jones, Paul A., Godfrey, Peter D., Cragg, Dinah M., Bains, Indra, Burton, Michael G., ...
We have used the Mopra Telescope to search for glycine and the simple chiral molecule propylene oxide in the Sgr B2 (LMH) and Orion KL, in the 3-mm band. We have not detected either species, but have...
Detection of broad 21-cm absorption at z(abs)=0.656 in the complex sight-line towards 3C 336 (2007)
Curran, Stephen J., Tzanavaris, Panayiotis, Murphy, Michael T., Webb, Jonathan K.
We report the detection of 21-cm absorption at z(abs) = 0.656 towards 1622 + 238 (3C 336). The line is very broad with a full width to half-maximum of 235 km s(-1), giving a velocity-integrated...
Tzanavaris, Panayiotis, Murphy, Michael T., Webb, Jonathan K., Flambaum, Victor V., Curran, Stephen J.
Nine quasar absorption spectra at 21-cm and ultraviolet (UV) rest-frame wavelengths are used to estimate possible variations in x equivalent to alpha(2)g(p)mu, where alpha is the fine structure...
The connection between metallicity and metal-line kinematics in (sub-)damped Ly (2007)
Murphy, Michael T., Curran, Stephen J., Webb, Jonathan K., Ménager, H., Zych, Berkeley J.
Abstract not available.
A search for propylene oxide and glycine in Sagittarius B2 (LMH) and Orion (2007)
Cunningham, Maria R., Jones, Paul A., Godfrey, Peter D., Cragg, Dinah M., Bains, Indra, Burton, Michael G., ...
We have used the Mopra Telescope to search for glycine and the simple chiral molecule propylene oxide in the Sgr B2 (LMH) and Orion KL, in the 3-mm band. We have not detected either species, but have...
Detection of broad 21-cm absorption at z(abs)=0.656 in the complex sight-line towards 3C 336 (2007)
Curran, Stephen J., Tzanavaris, Panayiotis, Murphy, Michael T., Webb, Jonathan K.
We report the detection of 21-cm absorption at z(abs) = 0.656 towards 1622 + 238 (3C 336). The line is very broad with a full width to half-maximum of 235 km s(-1), giving a velocity-integrated...
Tzanavaris, Panayiotis, Murphy, Michael T., Webb, Jonathan K., Flambaum, Victor V., Curran, Stephen J.
Nine quasar absorption spectra at 21-cm and ultraviolet (UV) rest-frame wavelengths are used to estimate possible variations in x equivalent to alpha(2)g(p)mu, where alpha is the fine structure...
The connection between metallicity and metal-line kinematics in (sub-)damped Ly (2007)
Murphy, Michael T., Curran, Stephen J., Webb, Jonathan K., Ménager, H., Zych, Berkeley J.
Abstract not available.
A search for propylene oxide and glycine in Sagittarius B2 (LMH) and Orion (2007)
Cunningham, Maria R., Jones, Paul A., Godfrey, Peter D., Cragg, Dinah M., Bains, Indra, Burton, Michael G., ...
We have used the Mopra Telescope to search for glycine and the simple chiral molecule propylene oxide in the Sgr B2 (LMH) and Orion KL, in the 3-mm band. We have not detected either species, but have...
Detection of broad 21-cm absorption at z(abs)=0.656 in the complex sight-line towards 3C 336 (2007)
Curran, Stephen J., Tzanavaris, Panayiotis, Murphy, Michael T., Webb, Jonathan K.
We report the detection of 21-cm absorption at z(abs) = 0.656 towards 1622 + 238 (3C 336). The line is very broad with a full width to half-maximum of 235 km s(-1), giving a velocity-integrated...
Tzanavaris, Panayiotis, Murphy, Michael T., Webb, Jonathan K., Flambaum, Victor V., Curran, Stephen J.
Nine quasar absorption spectra at 21-cm and ultraviolet (UV) rest-frame wavelengths are used to estimate possible variations in x equivalent to alpha(2)g(p)mu, where alpha is the fine structure...
The connection between metallicity and metal-line kinematics in (sub-)damped Ly (2007)
Murphy, Michael T., Curran, Stephen J., Webb, Jonathan K., Ménager, H., Zych, Berkeley J.
Abstract not available.
Detection of broad 21-cm absorption at z(abs)=0.656 in the complex sight-line towards 3C 336 (2007)
Curran, Stephen J., Tzanavaris, Panayiotis, Murphy, Michael T., Webb, J. K., Pihlstrom, Ylva M.
We report the detection of 21-cm absorption at z(abs) = 0.656 towards 1622 + 238 (3C 336). The line is very broad with a full width to half-maximum of 235 km s(-1), giving a velocity-integrated...
The connection between metallicity and metal-line kinematics in (sub-)damped Ly (2007)
Murphy, Michael T., Curran, Stephen J., Webb, J. K., Menager, H., Zych, Berkeley J.
Abstract not available.
Tzanavaris, Panayiotis, Murphy, Michael T., Webb, J. K., Flambaum, Victor V., Curran, Stephen J.
Nine quasar absorption spectra at 21-cm and ultraviolet (UV) rest-frame wavelengths are used to estimate possible variations in x equivalent to alpha(2)g(p)mu, where alpha is the fine structure...
A search for propylene oxide and glycine in Sagittarius B2 (LMH) and Orion (2007)
Cunningham, Maria R., Jones, Paul A., Godfrey, Peter D., Cragg, Dinah M., Bains, Indra, Burton, Michael G., ...
We have used the Mopra Telescope to search for glycine and the simple chiral molecule propylene oxide in the Sgr B2 (LMH) and Orion KL, in the 3-mm band. We have not detected either species, but have...
Detection of broad 21-cm absorption at z(abs)=0.656 in the complex sight-line towards 3C 336 (2007)
Curran, Stephen J., Tzanavaris, Panayiotis, Murphy, Michael T., Webb, J. K., Pihlstrom, Ylva M.
We report the detection of 21-cm absorption at z(abs) = 0.656 towards 1622 + 238 (3C 336). The line is very broad with a full width to half-maximum of 235 km s(-1), giving a velocity-integrated...
The connection between metallicity and metal-line kinematics in (sub-)damped Ly (2007)
Murphy, Michael T., Curran, Stephen J., Webb, J. K., Menager, H., Zych, Berkeley J.
Abstract not available.
Tzanavaris, Panayiotis, Murphy, Michael T., Webb, J. K., Flambaum, Victor V., Curran, Stephen J.
Nine quasar absorption spectra at 21-cm and ultraviolet (UV) rest-frame wavelengths are used to estimate possible variations in x equivalent to alpha(2)g(p)mu, where alpha is the fine structure...
A CH3CN and HCO+ survey towards southern methanol masers associated with star formation (2006)
Purcell, Cormac R., Balasubramanyam, Ramesh, Burton, Michael G., Walsh, Andrew J., Minier, Vincent, Hunt-Cunningham, Maria R., ...
We present the initial results of a 3-mm spectral-line survey towards 83 methanol maser-selected massive star-forming regions. Here, we report observations of the J Combining double low line 5-4 and...
A CH3CN and HCO+ survey towards southern methanol masers associated with star formation (2006)
Purcell, Cormac R., Balasubramanyam, Ramesh, Burton, Michael G., Walsh, Andrew J., Minier, Vincent, Hunt-Cunningham, Maria R., ...
We present the initial results of a 3-mm spectral-line survey towards 83 methanol maser-selected massive star-forming regions. Here, we report observations of the J Combining double low line 5-4 and...
A CH3CN and HCO+ survey towards southern methanol masers associated with star formation (2006)
Purcell, Cormac R., Balasubramanyam, Ramesh, Burton, Michael G., Walsh, Andrew J., Minier, Vincent, Hunt-Cunningham, Maria R., ...
We present the initial results of a 3-mm spectral-line survey towards 83 methanol maser-selected massive star-forming regions. Here, we report observations of the J Combining double low line 5-4 and...
A CH3CN and HCO+ survey towards southern methanol masers associated with star formation (2006)
Purcell, Cormac R., Balasubramanyam, Ramesh, Burton, Michael G., Walsh, Andrew J., Minier, Vincent, Hunt-Cunningham, Maria R., ...
We present the initial results of a 3-mm spectral-line survey towards 83 methanol maser-selected massive star-forming regions. Here, we report observations of the J Combining double low line 5-4 and...
Curran, Stephen J., Whiting, Matthew T., Murphy, Michael T., Webb, J. K., Longmore, Steven N., Pihlstrom, Ylva M., ...
We are currently undertaking a large survey for redshifted atomic and molecular absorption lines at radio frequencies. In this paper, we present the results from the first phase of this survey: the...
Curran, Stephen J., Whiting, Matthew T., Murphy, Michael T., Webb, Jonathan K., Longmore, Steven N., Pihlstrom, Ylva M., ...
We are currently undertaking a large survey for redshifted atomic and molecular absorption lines at radio frequencies. In this paper, we present the results from the first phase of this survey: the...
A CH3CN and HCO+ survey towards southern methanol masers associated with star formation (2006)
Purcell, Cormac R., Balasubramanyam, Ramesh, Burton, Michael G., Walsh, Andrew J., Minier, Vincent, Hunt-Cunningham, Maria R., ...
We present the initial results of a 3-mm spectral-line survey towards 83 methanol maser-selected massive star-forming regions. Here, we report observations of the J Combining double low line 5-4 and...
Curran, Stephen J., Whiting, Matthew T., Murphy, Michael T., Webb, J. K., Longmore, Steven N., Pihlstrom, Ylva M., ...
We are currently undertaking a large survey for redshifted atomic and molecular absorption lines at radio frequencies. In this paper, we present the results from the first phase of this survey: the...
Deep searches for high redshift molecular absorption (2005)
Curran, Stephen J., Webb, J. K., Murphy, Michael T., Kuno, N.
Millimetre-band scans of the frequency space towards optically dim quasars is potentially a highly efficient method for detecting new high redshift molecular absorption systems. Here we describe...
Spin temperatures and covering factors for HI 21-cm absorption in damped Lyman α systems (2005)
Curran, Stephen J., Murphy, Michael T., Pihlstrom, Ylva M., Webb, J. K., Purcell, Cormac R.
We investigate the practice of assigning high spin temperatures to damped Lyman α absorption systems (DLAs) not detected in H i 21-cm absorption. In particular, Kanekar & Chengalur have attributed...
Deep searches for high redshift molecular absorption (2005)
Curran, Stephen J., Webb, Jonathan K., Murphy, Michael T., Kuno, N.
Millimetre-band scans of the frequency space towards optically dim quasars is potentially a highly efficient method for detecting new high redshift molecular absorption systems. Here we describe...
Spin temperatures and covering factors for HI 21-cm absorption in damped Lyman α systems (2005)
Curran, Stephen J., Murphy, Michael T., Pihlstrom, Ylva M., Webb, Jonathan K., Purcell, Cormac R.
We investigate the practice of assigning high spin temperatures to damped Lyman α absorption systems (DLAs) not detected in H i 21-cm absorption. In particular, Kanekar & Chengalur have...
Tzanavaris, Panayiotis, Webb, J. K., Murphy, Michael T., Flambaum, Victor V., Curran, Stephen J.
Abstract not available.
Tzanavaris, Panayiotis, Webb, Jonathan K., Murphy, Michael T., Flambaum, Victor V., Curran, Stephen J.
Abstract not available.
Deep searches for high redshift molecular absorption (2005)
Curran, Stephen J., Webb, J. K., Murphy, Michael T., Kuno, N.
Millimetre-band scans of the frequency space towards optically dim quasars is potentially a highly efficient method for detecting new high redshift molecular absorption systems. Here we describe...
Spin temperatures and covering factors for HI 21-cm absorption in damped Lyman α systems (2005)
Curran, Stephen J., Murphy, Michael T., Pihlstrom, Ylva M., Webb, J. K., Purcell, Cormac R.
We investigate the practice of assigning high spin temperatures to damped Lyman α absorption systems (DLAs) not detected in H i 21-cm absorption. In particular, Kanekar & Chengalur have attributed...
Tzanavaris, Panayiotis, Webb, J. K., Murphy, Michael T., Flambaum, Victor V., Curran, Stephen J.
Abstract not available.
Atomic and molecular absorption at high redshift (2004)
Curran, Stephen J., Webb, J. K., Murphy, Michael T., Pihlstrom, Ylva M.
Strong constraints on possible variations in fundamental constants can be derived from HI 21-cm and molecular rotational absorption lines observed towards quasars. With the aim of forming a...
Cosmological evolution of heavy-element and H-2 abundances (2004)
Curran, Stephen J., Webb, J. K., Murphy, Michael T., Carswell, R. F.
Spectroscopic observations of distant quasars have resulted in the detection of molecular hydrogen in intervening damped Lyman alpha absorption clouds (DLAs). We use observations compiled from...
Molecular fraction limits in damped Lyman alpha absorption systems (2004)
Curran, Stephen J., Murphy, Michael T., Pihlstrom, Ylva M., Webb, J. K., Bolatto, A. D., Bower, Geoffrey C.
We have used the Green Bank Telescope (GBT) and Berkeley-Illinois-Maryland Association (BIMA) array to search for redshifted millimetre absorption in a sample of damped Lyman alpha absorption systems...
H-2-bearing damped Lyman-alpha systems as tracers of cosmological chemical evolution (2004)
Murphy, Michael T., Curran, Stephen J., Webb, J. K.
The chemical abundances in damped Lyman-alpha systems (DLAs) show more than 2 orders of magnitude variation at a given epoch, possibly because DLAs arise in a wide variety of host galaxies. This...
Atomic and molecular absorption at high redshift (2004)
Curran, Stephen J., Webb, J. K., Murphy, Michael T., Pihlstrom, Ylva M.
Strong constraints on possible variations in fundamental constants can be derived from HI 21-cm and molecular rotational absorption lines observed towards quasars. With the aim of forming a...
Cosmological evolution of heavy-element and H-2 abundances (2004)
Curran, Stephen J., Webb, J. K., Murphy, Michael T., Carswell, R. F.
Spectroscopic observations of distant quasars have resulted in the detection of molecular hydrogen in intervening damped Lyman alpha absorption clouds (DLAs). We use observations compiled from...
Molecular fraction limits in damped Lyman alpha absorption systems (2004)
Curran, Stephen J., Murphy, Michael T., Pihlstrom, Ylva M., Webb, J. K., Bolatto, A. D., Bower, Geoffrey C.
We have used the Green Bank Telescope (GBT) and Berkeley-Illinois-Maryland Association (BIMA) array to search for redshifted millimetre absorption in a sample of damped Lyman alpha absorption systems...
H-2-bearing damped Lyman-alpha systems as tracers of cosmological chemical evolution (2004)
Murphy, Michael T., Curran, Stephen J., Webb, J. K.
The chemical abundances in damped Lyman-alpha systems (DLAs) show more than 2 orders of magnitude variation at a given epoch, possibly because DLAs arise in a wide variety of host galaxies. This...
Cosmological Evolution of Heavy Element and Molecular Hydrogen Abundances (2003)
Curran, Stephen J., Webb, John K., Murphy, Michael T., Carswell, Robert F.
Spectroscopic observations of distant quasars have resulted in the detection of molecular hydrogen in intervening damped Lyman-alpha absorption clouds (DLAs). We use observations compiled from...
Murphy, M. T., Curran, Stephen J., Webb, J. K.
We describe initial results of a search for redshifted molecular absorption towards four millimetre-loud, optically faint quasars. A wide frequency bandwidth of up to 23 GHz per quasar was scanned...
Webb, J. K., Murphy, Michael T., Flambaum, Victor V., Curran, Stephen J.
We report results from a third sample of quasar absorption line spectra from the Keck telescope which has been studied to search for any possible variation of the fine structure constant, α. This...
A 22-GHz search for molecular absorption at z similar to 3 with the upgraded ATCA (2003)
Curran, Stephen J., Murphy, Michael T., Webb, J. K., Pihlstrom, Ylva M.
We report a λ. ≲ 1 cm search for rotational molecular absorption towards quasars, now possible with the upgraded Australia Telescope Compact Array (ATCA). The targets were PKS 0201+113, PKS...
Does the fine structure constant vary?: a detailed investigation into systematic effects (2003)
Murphy, M. T., Webb, J. K., Flambaum, Victor V., Curran, Stephen J.
We have previously presented 5.7 σ evidence for a smaller αat redshifts 0.2 < zabs < 3.7 from a sample of 128 Keck/HIRES quasar absorption systems: Δα/α = (-0.57 ± 0.10) x10-5. A non-zero
Murphy, M. T., Curran, Stephen J., Webb, J. K.
We describe initial results of a search for redshifted molecular absorption towards four millimetre-loud, optically faint quasars. A wide frequency bandwidth of up to 23 GHz per quasar was scanned...
Webb, J. K., Murphy, Michael T., Flambaum, Victor V., Curran, Stephen J.
We report results from a third sample of quasar absorption line spectra from the Keck telescope which has been studied to search for any possible variation of the fine structure constant, α. This...
A 22-GHz search for molecular absorption at z similar to 3 with the upgraded ATCA (2003)
Curran, Stephen J., Murphy, Michael T., Webb, J. K., Pihlstrom, Ylva M.
We report a λ. ≲ 1 cm search for rotational molecular absorption towards quasars, now possible with the upgraded Australia Telescope Compact Array (ATCA). The targets were PKS 0201+113, PKS...
Does the fine structure constant vary?: a detailed investigation into systematic effects (2003)
Murphy, M. T., Webb, J. K., Flambaum, Victor V., Curran, Stephen J.
We have previously presented 5.7 σ evidence for a smaller αat redshifts 0.2 < zabs < 3.7 from a sample of 128 Keck/HIRES quasar absorption systems: Δα/α = (-0.57 ± 0.10) x10-5. A non-zero
A search for molecules in damped Lyman-alpha absorbers occulting millimetre-loud quasars (2002)
Curran, Stephen J., Murphy, Michael T., Webb, J. K., Rantakyro, Fredrik T., Johansson, L. E. B., Nikolic, Silvana
We have used the SEST 15-metre and Onsala 20-metre telescopes to perform deep (rms ≳ 30 mJy) integrations of various molecular rotational transitions towards damped Lyman-alpha absorption...
Time evolution of the fine structure constant (2002)
Murphy, Michael T., Webb, J. K., Flambaum, Victor V., Curran, Stephen J.
We present a short review of the current quasar (QSO) absorption line constraints on possible variation of the fine structure constant, α ≡ e2/¯hc. Particular attention is paid to...
Curran, Stephen J., Webb, J. K., Murphy, M. T., Bandiera, Rino, Corbelli, Edvige, Flambaum, Victor V.
We present a catalogue of the 322 damped Lyman alpha absorbers taken from the literature. All damped Lyman alpha absorbers are included, with no selection on redshift or quasar magnitude. Of these,...
A search for molecules in damped Lyman-alpha absorbers occulting millimetre-loud quasars (2002)
Curran, Stephen J., Murphy, Michael T., Webb, J. K., Rantakyro, Fredrik T., Johansson, L. E. B., Nikolic, Silvana
We have used the SEST 15-metre and Onsala 20-metre telescopes to perform deep (rms ≳ 30 mJy) integrations of various molecular rotational transitions towards damped Lyman-alpha absorption systems...
Time evolution of the fine structure constant (2002)
Murphy, Michael T., Webb, J. K., Flambaum, Victor V., Curran, Stephen J.
We present a short review of the current quasar (QSO) absorption line constraints on possible variation of the fine structure constant, α ≡ e2/¯hc. Particular attention is paid to...
Curran, Stephen J., Webb, J. K., Murphy, M. T., Bandiera, Rino, Corbelli, Edvige, Flambaum, Victor V.
We present a catalogue of the 322 damped Lyman alpha absorbers taken from the literature. All damped Lyman alpha absorbers are included, with no selection on redshift or quasar magnitude. Of these,...
Laminar mixing of a yield stress fluid using helical ribbon impellers / (1998)
Curran, Stephen J. (Stephen John)
Submitted to the Faculty of Graduate Studies and Research in partial fulfilment of the requirements for the degree of Master of Science, Department of Chemical and Materials Engineering.