Browsing by Title

Probing the Dragonfish star-forming complex: : the ionizing population of the young massive cluster Mercer 30

Fuente, D. de la; Najarro, F.; Borissova, J.; Alegría, S. Ramírez; Hanson, M. M.; Trombley, C.; Figer, D. F.; Davies, B.; Garcia, M.; Kurtev, R.; Urbaneja, M. A.; Smith, L. C.; Lucas, P. W.; Herrero, A. (2016-05-01)

The Dragonfish Nebula has been recently claimed to be powered by a superluminous but elusive OB association. Instead, systematic searches in near-infrared photometric surveys have found many other cluster candidates on ...

Probing the extended emission-line region in 3c 171 with high-frequency radio polarimetry

Hardcastle, M.J. (2003-02)

Probing the feeding and feedback of AGN through molecular line maps

Garcia-Burillo, S.; Combes, F.; Usero, A.; Gracia-Carpio, J. (2007)

Current mm-interferometers can provide a complete view of the distribution and kinematics of molecular gas in the circumnu- clear disks of nearby galaxies. High-resolution CO maps are paramount in order to track down the ...

Probing the initial conditions of high mass star formation: I. Deuteration and depletion in high mass pre/protocluster clumps

Pillai, T.; Wyrowski, F.; Hatchell, J.; Gibb, A.G.; Thompson, M.A. (2007)

Probing the initial conditions of high-mass star formation II : Fragmentation, stability, and chemistry towards high-mass star-forming regions G29.96-0.02 and G35.20-1.74

Pillai, T.; Kauffmann, J.; Wyrowski, F.; Hatchell, J.; Gibb, A.G.; Thompson, M.A. (2011)

Most work on high-mass star formation has focused on observations of young massive stars in protoclusters. Very little is known about the preceding stage. Here, we present a new high-resolution study of pre-protocluster ...

Probing the molecular interstellar medium of M82 with Herschel-SPIRE spectroscopy

Panuzzo, P.; Rangwala, N.; Rykala, A.; Isaak, K. G.; Glenn, J.; Wilson, C. D.; Auld, R.; Baes, M.; Barlow, M. J.; Bendo, G. J.; Bock, J. J.; Boselli, A.; Bradford, M.; Buat, V.; Castro-Rodríguez, N.; Chanial, P.; Charlot, S.; Ciesla, L.; Clements, D. L.; Cooray, A.; Cormier, D.; Cortese, L.; Davies, J. I.; Dwek, E.; Eales, S. A.; Elbaz, D.; Fulton, T.; Galametz, M.; Galliano, F.; Gear, W. K.; Gomez, H. L.; Griffin, M.; Hony, S.; Levenson, L. R.; Lu, N.; Madden, S.; O'Halloran, B.; Okumura, K.; Oliver, S.; Page, M. J.; Papageorgiou, A.; Parkin, T. J.; Pérez-Fournon, I.; Pohlen, M.; Polehampton, E. T.; Rigby, E. E.; Roussel, H.; Sacchi, N.; Sauvage, M.; Schulz, B.; Schirm, M. R. P.; Smith, M. W. L.; Spinoglio, L.; Stevens, Jason; Srinivasan, S.; Symeonidis, M.; Swinyard, B.; Trichas, M.; Vaccari, M.; Vigroux, L.; Wozniak, H.; Wright, G. S.; Zeilinger, W. W. (2010-07-01)

We present the observations of the starburst galaxy M82 taken with the Herschel SPIRE Fourier-transform spectrometer. The spectrum (194–671 μm) shows a prominent CO rotational ladder from J = 4–3 to 13–12 emitted by the ...

Probing the Multiphase Interstellar Medium in an Extreme Starburst at High Redshift

Doherty, Matthew (2023-12-14)

In this thesis we present a range of observations and results relating to the lensed hyperluminous sub-mm galaxy ‘9io9’ at z = 2.6, where we have used sub-mm/mm spectroscopy targeting the dense and cold interstellar ...

Probing the nature of the low state in the extreme ultraluminous X-ray pulsar NGC 5907 ULX1

Fuerst, F.; Walton, D. J.; Israel, Gian Luca; Bachetti, M.; Barret, D.; Brightman, Murray; Earnshaw, H. P.; Fabian, A.; Heida, M.; Imbrogno, M.; Middleton, M. J.; Pinto, C.; Salvaterra, R.; Roberts, T. P.; Castillo, G. A. Rodríguez; Webb, N. (2023-04-12)

NGC 5907 ULX1 is the most luminous ultra-luminous X-ray pulsar (ULXP) known to date, reaching luminosities in excess of 1e41 erg/s. The pulsar is known for its fast spin-up during the on-state. Here, we present a long-term ...

Probing the Production of Actinides under Different r-process Conditions

Eichler, M.; Sayar, W.; Arcones, A.; Rauscher, T. (2019-07-01)

Several extremely metal-poor stars are known to have an enhanced thorium abundance. These actinide-boost stars have likely inherited material from an r-process that operated under different conditions than the r-process ...

Probing the Role of AGN Feedback and Galactic Mergers in Galaxy Evolution

Nedelchev, Borislav (2020-06-09)

In this thesis we aim to probe the role of two of the processes that can dictate the evolution of galaxies – feedback from the central active galactic nucleus (AGN) and mergers. To study the importance of AGN feedback ...

Probing the X-ray binary populations of the ring galaxy NGC 1291

Luo, B.; Fabbiano, G.; Fragos, T.; Kim, D. -W.; Belczynski, K.; Brassington, Nicola; Pellegrini, S.; Tzanavaris, P.; Wang, Junfeng; Zezas, A. (2012-04)

We present Chandra studies of the X-ray binary (XRB) populations in the bulge and ring regions of the ring galaxy NGC 1291. We detect 169 X-ray point sources in the galaxy, 75 in the bulge and 71 in the ring, utilizing the ...

Probing ∼L* Lyman-break galaxies at z≈ 7 in GOODS-South with WFC3 on Hubble Space Telescope

Wilkins, S.; Bunker, A.; Ellis, R.S.; Stark, D.; Stanway, E.R.; Chiu, K.; Lorenzoni, S.; Jarvis, M.J. (2010)

We analyse recently acquired near-infrared Hubble Space Telescope imaging of the Great Observatories Origins Deep Survey (GOODS)-South field to search for star-forming galaxies at z≈ 7.0 . By comparing Wide Field Camera 3 ...

The problem area of invoice matching at Neon Electrical- a case study of SSM in business systems analysis and design

Pascoulis, C. (University of Hertfordshire, 1996)

Today's business systems analysts deal with problem areas which can be diverse in size and complexity. The tools they use to clarify these problem areas are traditionally 'hard' systems methodologies such as Structured ...

Problem based learning in practice: understanding human water needs

Jenkins, J.O. (2006)

Undergraduate students are subject to increasing learning pressures relating to the amount, level and variety of reading and research they are required to undertake in relation to taught sessions and assignments.This paper ...

Problem based learning in radiography education: A narrative review

Lawal, Olanrewaju; Ramlaul, Aarthi; Murphy, Fred (2021-05-01)

Objectives Radiography practice is fast developing with new imaging updates and challenging scenarios to deal with on a frequent basis. There is a need to equip students with the skill to be independent learners and develop ...

The problem is not over-automation but lack of automation policy

Amaldi, Paola; Smoker, Anthony (2012-05-29)

The problem of the justification of a theory of knowledge. Part 1 : Some historical metamorphoses

Floridi, L. (1993)

The article concerns the meta-epistemological problem of the justification of a theory of knowledge and provides a reconstruction of the history of its formulations. In the first section, I analyse the connections between ...

The problem of the justification of a theory of knowledge. Part II : Morphology and diagnosis

Floridi, L. (1994)

Problem-based learning in astrophysics

Raine, D.; Collett, J. (2003)

The Problematic Nature of Evidence

Gates, Bob; Wray, Jane (Balliere Tindall, 2000)