The progenitor mass of the magnetar SGR1900+14 (2009)
Davies, Ben, Figer, Don F., Kudritzki, Rolf-Peter, Trombley, Christine, Kouveliotou, Chryssa, Wachter, Stefanie
Magnetars are young neutron stars with extreme magnetic fields (B > 10^{14}-10^{15}G). How these fields relate to the properties of their progenitor stars is not yet clearly established. However,...
A Near-Infrared Study of the Stellar Cluster: [DBS2003] 45 (2009)
Zhu, Qingfeng, Davies, Ben, Figer, Donald F., Trombley, Christine
We present a multi-wavelength photometric and spectroscopic study of a newly discovered candidate cluster [DBS2003] 45. Our H, Ks photometry confirms that [DBS2003] 45 is a cluster. An average visual...
Near-infrared spectra of Galactic stellar clusters detected on Spitzer/GLIMPSE images (2009)
Messineo, Maria, Davies, Ben, Ivanov, Valentin D., Figer, Donald F., Schuller, Frederic, Habing, Harm J., ...
We present near-infrared spectroscopic observations of massive stars in three stellar clusters located in the direction of the inner Galaxy. One of them, the Quartet, is a new discovery while the...
Young Massive Clusters as probes of stellar evolution (2009)
Young Massive Clusters (YMCs) represent ideal testbeds in which to study massive stellar evolution as they contain large, coeval, chemically homogeneous, samples of massive stars. By studying YMCs...
Chemical abundance patterns in the inner Galaxy: the Scutum Red Supergiant Clusters (2009)
Davies, Ben, Origlia, Livia, Kudritzki, Rolf-Peter, Figer, Don F., Rich, R. Michael, Najarro, Francisco, ...
The location of the Scutum Red-Supergiant (RSG) clusters at the end of the Galactic Bar makes them an excellent probe of the Galaxy's secular evolution; while the clusters themselves are ideal...
The chemical abundances in the Galactic Centre from the atmospheres of Red Supergiants (2008)
Davies, Ben, Origlia, Livia, Kudritzki, Rolf-Peter, Figer, Don F., Rich, R. Michael, Najarro, Francisco
The Galactic Centre (GC) has experienced a high degree of recent star-forming activity, as evidenced by the large number of massive stars currently residing there. The relative abundances of chemical...
Discovery of a young massive stellar cluster near HESS J1813-178 (2008)
Messineo, Maria, Figer, Donald F., Davies, Ben, Rich, R. Michael, Valenti, E., Kudritzki, R. P.
We present the serendipitous discovery of a young stellar cluster in the Galactic disk at l=12deg. Using Keck/NIRSPEC, we obtained high- and low-resolution spectroscopy of several stars in the...
Oudmaijer, Rene, Davies, Ben, De Wit, Willem-Jan, Patel, Mitesh
The yellow hypergiants are found in a stage between the massive Red Supergiants and the Wolf-Rayet stars. This review addresses current issues concerning the evolution of massive stars, concentrating...
The cool supergiant population of the massive young star cluster RSGC1 (2007)
Davies, Ben, Figer, Don F., Law, Casey J., Kudritzki, Rolf-Peter, Najarro, Francisco, Herrero, Artemio, ...
We present new high-resolution near-IR spectroscopy and OH maser observations to investigate the population of cool luminous stars of the young massive Galactic cluster RSGC1. Using the 2.293\micron...
Davies, Ben, Oudmaijer, René D., Sahu, Kailash C.
We present NAOMI/OASIS adaptive-optics assisted integral-field spectroscopy of the transitional massive hypergiant IRC +10420, an extreme mass-losing star apparently in the process of evolving from a...
A massive cluster of Red Supergiants at the base of the Scutum-Crux arm (2007)
Davies, Ben, Figer, Don F., Kudritzki, Rolf-Peter, MacKenty, John, Najarro, Francisco, Herrero, Artemio
We report on the unprecedented Red Supergiant (RSG) population of a massive young cluster, located at the base of the Scutum-Crux Galactic arm. We identify candidate cluster RSGs based on {\it 2MASS}...
Modelling the clumping-induced polarimetric variability of hot star winds (2007)
Davies, Ben, Vink, Jorick S., Oudmaijer, René D.
Clumping in the winds of massive stars may significantly reduce empirical mass-loss rates, and which in turn may have a large impact on our understanding of massive star evolution. Here, we...
Pelvic Rehabilitation Device: Version II (2006)
Tanner, Anthony, Davies, Ben, Forte, James, Doughty, Marshal, Batista, Matteo
Capstone Design Course, MIE 701-702, Technical Design Report, Project #F05/F06, Mid-Term report
Using polarization to study the winds of massive stars (2006)
Davies, Ben, Vink, Jorick S., Oudmaijer, Rene D.
The topic of wind-clumping has been the subject of much activity in recent years, due to the impact that it can have on derived mass-loss rates. Here we present an alternative method of investigating...
An integrated analysis of scale effects in alternative agricultural systems (2006)
Firth, Chris, Philipps, Lois, Stagl, Sigrid, Benton, Tim, Brown, Katrina, Burton, Rob, ...
The impacts associated with alternative methods of agricultural production, and the factors that drive their adoption, are critically dependent on the scale at which they are applied. Using organic...
An integrated analysis of scale effects in alternative agricultural systems (2006)
Firth, Chris, Philipps, Lois, Stagl, Sigrid, Benton, Tim, Brown, Katrina, Burton, Rob, ...
The impacts associated with alternative methods of agricultural production, and the factors that drive their adoption, are critically dependent on the scale at which they are applied. Using organic...
The clumpiness of Luminous Blue Variable winds (2005)
Davies, Ben, Oudmaijer, Rene D., Vink, Jorick S.
We present the first systematic spectropolarimetric study of Luminous Blue Variables (LBVs), and find that at least half those objects studied display evidence for intrinsic polarization -- a...
Asphericity and clumpiness in the winds of Luminous Blue Variables (2005)
Davies, Ben, Oudmaijer, Rene D., Vink, Jorick S.
We present the first systematic spectropolarimetric study of Luminous Blue Variables (LBVs) in the Galaxy and the Magellanic Clouds, in order to investigate the geometries of their winds. We find...
Targeted Deletion of the Epididymal Receptor HE6 Results in Fluid Dysregulation and Male Infertility
Davies, Ben, Baumann, Claudia, Kirchhoff, Christiane, Ivell, Richard, Nubbemeyer, Reinhard, Habenicht, Ursula-Friederike, ...
Human epididymal protein 6 (HE6; also known as GPR64) is an orphan member of the LNB-7TM (B2) subfamily of G-protein-coupled receptors. Family members are characterized by the dual presence of a...
Targeted Deletion of the Epididymal Receptor HE6 Results in Fluid Dysregulation and Male Infertility
Davies, Ben, Baumann, Claudia, Kirchhoff, Christiane, Ivell, Richard, Nubbemeyer, Reinhard, Habenicht, Ursula-Friederike, ...
Human epididymal protein 6 (HE6; also known as GPR64) is an orphan member of the LNB-7TM (B2) subfamily of G-protein-coupled receptors. Family members are characterized by the dual presence of a...