All Outputs (11)

The deep OB star population in Carina from the VST Photometric H alpha Survey (VPHAS plus ) (2016)
Journal Article
Wright. (2016). The deep OB star population in Carina from the VST Photometric H alpha Survey (VPHAS plus ). Monthly Notices of the Royal Astronomical Society, 1807 - 1830. https://doi.org/10.1093/mnras/stw2751

Massive OB stars are critical to the ecology of galaxies and yet our knowledge of OB stars in the Milky Way, fainter than V ~ 12, remains patchy. Data from the VST Photometric Ha Survey (VPHAS+) permit the construction of the first deep catalogues of... Read More about The deep OB star population in Carina from the VST Photometric H alpha Survey (VPHAS plus ).

Solar-type dynamo behaviour in fully convective stars without a tachocline. (2016)
Journal Article
Wright, N. J., & Drake, J. J. (2016). Solar-type dynamo behaviour in fully convective stars without a tachocline. Nature, 526 -528. https://doi.org/10.1038/nature18638

In solar-type stars (with radiative cores and convective envelopes like our Sun), the magnetic field powers star spots, flares and other solar phenomena, as well as chromospheric and coronal emission at ultraviolet to X-ray wavelengths. The dynamo re... Read More about Solar-type dynamo behaviour in fully convective stars without a tachocline..

SXP 214: An X-ray Pulsar In The Small Magellanic Cloud, Crossing The Circumstellar Disk Of The Companion (2016)
Journal Article
Wright. (2016). SXP 214: An X-ray Pulsar In The Small Magellanic Cloud, Crossing The Circumstellar Disk Of The Companion. Astrophysical Journal, https://doi.org/10.3847/0004-637X/826/1/4

Located in the Small Magellanic Cloud (SMC), SXP 214 is an X-ray pulsar in a high mass X-ray binary system with a Be-star companion. A recent survey of the SMC under a Chandra X-ray Visionary program found that the source was in a transition when the... Read More about SXP 214: An X-ray Pulsar In The Small Magellanic Cloud, Crossing The Circumstellar Disk Of The Companion.

Physical parameters of IPHAS-selected classical Be stars: I. Determination procedure and evaluation of the results⋆ (2016)
Journal Article
Gkouvelis, L., Fabregat, J., Zorec, J., Steeghs, D., Drew, J. E., Raddi, R., …Drake, J. J. (2016). Physical parameters of IPHAS-selected classical Be stars: I. Determination procedure and evaluation of the results⋆. Astronomy & Astrophysics, 591, A140. https://doi.org/10.1051/0004-6361/201527090

We present a semi-automatic procedure to obtain fundamental physical parameters and distances of classical Be (CBe) stars, based on the Barbier-Chalonge-Divan (BCD) spectrophotometric system. Our aim is to apply this procedure to a large sample of CB... Read More about Physical parameters of IPHAS-selected classical Be stars: I. Determination procedure and evaluation of the results⋆.

Mass segregation in star clusters is not energy equipartition (2016)
Journal Article
Wright. (2016). Mass segregation in star clusters is not energy equipartition. Monthly Notices of the Royal Astronomical Society, 119-123. https://doi.org/10.1093/mnrasl/slw061

Mass segregation in star clusters is often thought to indicate the onset of energy equipartition, where the most massive stars impart kinetic energy to the lower-mass stars and brown dwarfs/free floating planets. The predicted net result of this is t... Read More about Mass segregation in star clusters is not energy equipartition.

Globules and pillars in Cygnus X: I.Herschelfar-infrared imaging of the Cygnus OB2 environment⋆ (2016)
Journal Article
Schneider, N., Bontemps, S., Motte, F., Blazere, A., André, P., Anderson, L. D., …Wright, N. J. (2016). Globules and pillars in Cygnus X: I.Herschelfar-infrared imaging of the Cygnus OB2 environment⋆. Astronomy & Astrophysics, 591, Article A40. https://doi.org/10.1051/0004-6361/201628328

The radiative feedback of massive stars on molecular clouds creates pillars, globules and other features at the interface between the H II  region and molecular cloud. Optical and near-infrared observations from the ground as well as with the Hubble... Read More about Globules and pillars in Cygnus X: I.Herschelfar-infrared imaging of the Cygnus OB2 environment⋆.

Discovery of a long-lived, high-amplitude dusty infrared transient (2016)
Journal Article
Britt, C. T., Maccarone, T. J., Green, J. D., Jonker, P. G., Hynes, R. I., Torres, M. A. P., …Nelemans, G. (2016). Discovery of a long-lived, high-amplitude dusty infrared transient. Monthly Notices of the Royal Astronomical Society, 460(3), 2822-2833. https://doi.org/10.1093/mnras/stw1182

We report the detection of an infrared-selected transient which has lasted at least five years, first identified by a large mid-infrared and optical outburst from a faint X-ray source detected with the Chandra X-ray Observatory. In this paper we rule... Read More about Discovery of a long-lived, high-amplitude dusty infrared transient.

Cygnus OB2 DANCe: A high-precision proper motion study of the Cygnus OB2 association (2016)
Journal Article
Wright. (2016). Cygnus OB2 DANCe: A high-precision proper motion study of the Cygnus OB2 association. Monthly Notices of the Royal Astronomical Society, 2593 - 2610. https://doi.org/10.1093/mnras/stw1148

We present a high-precision proper motion study of 873 X-ray and spectroscopically selected stars in the massive OB association Cygnus OB2 as part of the DANCe project. These were calculated from images spanning a 15 yr baseline and have typical prec... Read More about Cygnus OB2 DANCe: A high-precision proper motion study of the Cygnus OB2 association.

The Gaia-ESO Survey: Dynamical analysis of the L1688 region in Ophiuchus (2016)
Journal Article
Jeffries, R., & Wright, N. J. (2016). The Gaia-ESO Survey: Dynamical analysis of the L1688 region in Ophiuchus. Astronomy and Astrophysics Supplement Series, https://doi.org/10.1051/0004-6361/201527253

The Gaia ESO Public Spectroscopic Survey (GES) is providing the astronomical community with high-precision measurements of many stellar parameters including radial velocities (RVs) of stars belonging to several young clusters and star-forming regions... Read More about The Gaia-ESO Survey: Dynamical analysis of the L1688 region in Ophiuchus.

Dynamical evolution of star forming regions - II. Basic kinematics (2016)
Journal Article
Parker, R. J., & Wright, N. J. (2016). Dynamical evolution of star forming regions - II. Basic kinematics. Monthly Notices of the Royal Astronomical Society, 3430-3447. https://doi.org/10.1093/mnras/stw087

We follow the dynamical evolution of young star-forming regions with a wide range of initial conditions and examine how the radial velocity dispersion, $\sigma$, evolves over time. We compare this velocity dispersion to the theoretically expected val... Read More about Dynamical evolution of star forming regions - II. Basic kinematics.

The Kinematics of Star Formation: Theory and Observation in the Gaia Era (Published title 'Star Formation in the Gaia Era') (2016)
Journal Article
Wright, N. (2016). The Kinematics of Star Formation: Theory and Observation in the Gaia Era (Published title 'Star Formation in the Gaia Era'). Astronomy and Geophysics, 37-42. https://doi.org/10.1093/astrogeo/atw042

The European Space Agency's Gaia space telescope, launched in 2013, aims to measure the positions, parallaxes, and proper motions of a billion stars in our Galaxy and throughout the Local Group. In doing so it will include hundreds of thousands of yo... Read More about The Kinematics of Star Formation: Theory and Observation in the Gaia Era (Published title 'Star Formation in the Gaia Era').