Browsing University of Hertfordshire by Title

A Spitzer mid-infrared spectral survey of mass-losing carbon stars in the Large Magellanic Cloud

Zijlstra, A.A.; Matsuura, M.; Wood, P.R.; Sloan, G.C.; Lagadec, E.; van Loon, J.T.; Groenewegen, M.A.T.; Feast, M.W.; Menzies, J.W.; Whitelock, P.A.; Blommaert, J.A.D.L.; Cioni, M-R.L.; Habing, H.J.; Hony, S.; Loup, C.; Waters, L.B.F.M. (2006)

Spitzer MID-IR spectroscopy of powerful 2Jy and 3CRR radio galaxies. II : Agn power indicators and unification

Dicken, D.; Tadhunter, C.; Morganti, R.; Robinson, A.; Magagnoli, M.; Kharb, P.; Ramos Almeida, C.; Mingo, B.; Hardcastle, M.J.; Nesvadba, N. P. H.; Singh, V.; Kouwenhoven, M. B. N.; Rose, M.; Spoon, H.; Inskip, K. J.; Holt, J. (2014-06-20)

It remains uncertain which continuum and emission line diagnostics best indicate the bolometric powers of active galactic nuclei (AGNs), especially given the attenuation caused by the circumnuclear material and the possible ...

Spitzer observations of acetylene bands in carbon-rich asymptotic giant branch stars in the Large Magellanic Cloud

Matsuura, M.; Wood, P.R.; Sloan, G.C.; Zijlstra, A.A.; van Loon, J.T.; Groenewegen, M.A.T.; Blommaert, J.A.D.L.; Cioni, M-R.L.; Feast, M.W.; Habing, H.J.; Hony, S.; Lagadec, E.; Loup, C.; Menzies, J.W.; Waters, L.B.F.M.; Whitelock, P.A. (2006)

Spitzer observations of nearby M dwarfs

Riaz, Basmah; Mullan, D. J.; Gizis, John E. (2006-10-20)

We present Spitzer IRAC and MIPS observations for a sample of eight M dwarfs: six dMe, one dM, and one sdMe star. All of our targets are found to have SEDs that are fitted within the error bars by a purely photospheric ...

Spitzer observations of two TW Hydrae association brown dwarfs

Riaz, B; Gizis, J E; Hmiel, A (2006-03-10)

We present Spitzer Space Telescope observations of two TW Hydrae association brown dwarfs, 2MASSW J1207334-393254 and 2MASSW J1139511-315921, in the IRAC and MIPS 24 mm bands. On the basis of their IRAC colors, we have ...

Spitzer Space Telescope IRAC and MIPS observations of the interacting galaxies Ic 2163 and NGC 2207: clumpy emission

Elmegreen, D.M.; Elmegreen, B.; Kaufman, M.; Sheth, K.; Struck, C.; Thomasson, M.; Brinks, E. (2006)

Spitzer Space Telescope spectral observations of AGB stars in the Fornax dwarf spheroidal galaxy

Matsuura, M.; Zijlstra, A.A.; Bernard-Salas, J.; Menzies, J.W.; Sloan, G.C.; Whitelock, P.A.; Wood, P.R.; Cioni, M-R.L.; Feast, M.W.; Lagadec, E.; van Loon, J.T.; Groenewegen, M.A.T.; Harris, G.J. (2007)

Spitzer spectroscopy of carbon stars in the Small Magellanic Cloud

Lagadec, E.; Zijlstra, A.A.; Sloan, G.C.; Matsuura, M.; Wood, P.R.; van Loon, J.T.; Harris, G.J.; Blommaert, J.A.D.L.; Hony, S.; Groenewegen, M.A.T.; Feast, M.W.; Whitelock, P.A.; Menzies, J.W.; Cioni, M-R.L. (2007)

A Spitzer view of star formation in the Cygnus X North complex

Beerer, I.M.; Koenig, X.P.; Hora, J.L.; Gutermuth, R.A.; Bontemps, S.; Megeath, S.T.; Schneider, N.; Motte, F.; Carey, S.; Simon, R.; Keto, E.; Smith, H.A.; Allen, L.E.; Fazio, G.G.; Kraemer, K.E.; Price, S.; Mizuno, D.; Adams, J.D.; Hernandez, J.; Lucas, P.W. (2010)

We present new images and photometry of the massive star-forming complex Cygnus X obtained with the Infrared Array Camera (IRAC) and the Multiband Imaging Photometer for Spitzer (MIPS) on board the Spitzer Space Telescope. ...

Splash dispersal of Pseudocercosporella capsellae, cause of white leaf spot on oilseed rape

Fitt, Bruce D.L.; Inman, A.J.; Lacey, M.E.; McCartney, H. A. (1991)

Splash dispersal of spores of Pseudocercosporella capsellae (white leaf spot) from oilseed rape leaves of different inclination, flexibility and age

Fitt, Bruce D.L.; Inman, A.J.; Lacey, M.E.; MacCartney, H.A. (1992-06)

Spore dispersal gradients were fitted well by exponential models in three experiments when simulated rain fell on to oilseed rape leaves infected by Pseudocercosporella capsellae (white leaf spot). Regressions of number ...

Splitting strings on integrable backgrounds

Vicedo, B. (2011-11)

Using integrability we reduce the problem of constructing general classical splitting string solutions on R×S3 to a series of Birkhoff factorization problems. Namely, given any incoming string solution satisfying a necessary ...

Spoken word recognition of novel words, either produced or only heard during learning

Zamuner, Tania S.; Morin-Lessard, Elizabeth; Strahm, Stephanie; Page, Michael P A (2015-12-01)

Psycholinguistic models of spoken word production differ in how they conceptualize the relationship between lexical, phonological and output representations, making different predictions for the role of production in ...

Spontaneity and power : theatre improvisation as processes of change in organizations

Larsen, Henry (University of Hertfordshire, 2005)

Theatre has gained wider use in organizational change processes, either as Forum Theatre inspired by Boal (1998, [1979] 2000) or as improvisation inspired by Johnstone (1981,1999); and in recent years, a number of authors ...

Spontaneous and deliberate future thinking: A dual process account

Cole, Scott; Kvavilashvili, Lia (2019-12-05)

In this article, we address an apparent paradox in the literature on mental time travel and mind-wandering: How is it possible that future thinking is both constructive, yet often experienced as occurring spontaneously? ...

The spontaneous and neurogenic contractile responses of the isolated bladder smooth muscle are markedly enhanced in MPTP treated common marmoset (Callithrix jacchus)

Pritchard, Sara; Jackson, Michael; Lione, Lisa; Benham, Christopher; Rose, Sarah; Jenner, Peter; Iravani, Mahmoud M. (2013-12)

Dysfunction of the lower urinary tract, such as urinary urgency and incontinence, characterised as bladder hyperreflexia, is a common non-motor feature of Parkinson’s disease (PD) (1). Previously, it was shown that common ...

Spontaneous Coronary Artery Dissection : The Phantom Menace

Spinthakis, Nikolaos; Abdulkareem, Nada; Farag, Mohamed; Gorog, Diana A (2016-12-01)

We present a case of a 66-year-old lady with chest pain, without dynamic 12-lead electrocardiographic (ECG) changes and normal serial troponin. Coronary angiography revealed a linear filing defect in the first obtuse ...

Spontaneous emission from an extended wave packet : field correlations

Steuernagel, O.; Paul, H. (1996)

Utilizing a recently found solution to the problem of a spontaneously radiating atom with an extended center-of-mass wave function [K. Rza̧żewski and W. Żakowicz, J. Phys. B 25, L319 (1992)] it is shown, for nonrelativistic ...

Spontaneous parametric down-conversion for an arbitrary monochromatic pump beam

Steuernagel, O.; Rabitz, H. (1998)

Signal-idler photon-pairs generated in spontaneous parametric down-conversion are considered for the case of an arbitrary monochromatic pump beam. It is shown that the quantum correlations between the signal and idler ...

Spontaneous past and future thinking about the COVID-19 pandemic across 14 countries: Effects of individual and country-level COVID-19 impact indicators

Cole, Scott; Markostamou, Ioanna; Watson, Lynn Ann; Barzykowski, Krystian; Ergen, İrem; Taylor, Andrea; Öner, Sezin (2022-10-27)

In 2020, the world was amid a global health crisis—the COVID-19 pandemic. Nations had varying levels of morbidity and mortality and adopted different measures to prevent the spread of infection. Effects of the pandemic on ...