Nicholas Wright's Outputs (95)

First release of the IPHAS catalogue of new extended planetary nebulae (2014)
Journal Article
Wright, N. J. (2014). First release of the IPHAS catalogue of new extended planetary nebulae. Monthly Notices of the Royal Astronomical Society, 3388-3401. https://doi.org/10.1093/mnras/stu1404

We present the first results of our search for new, extended planetary nebulae (PNe) based on careful, systematic, visual scrutiny of the imaging data from the Isaac Newton Telescope Photometric Ha Survey of the Northern Galactic plane (IPHAS). The n... Read More about First release of the IPHAS catalogue of new extended planetary nebulae.

The VST Photometric Ha Survey of the Southern Galactic Plane and Bulge (VPHAS+) (2014)
Journal Article
Wright, N. J. (2014). The VST Photometric Ha Survey of the Southern Galactic Plane and Bulge (VPHAS+). Monthly Notices of the Royal Astronomical Society, 2036-2058. https://doi.org/10.1093/mnras/stu394

The VST Photometric Ha Survey of the Southern Galactic Plane and Bulge (VPHAS+) is surveying the southern Milky Way in u, g, r, i and Ha at ~1?arcsec angular resolution. Its footprint spans the Galactic latitude range -5o < b < +5° at all longitudes... Read More about The VST Photometric Ha Survey of the Southern Galactic Plane and Bulge (VPHAS+).

BURN OUT OR FADE AWAY? ON THE X-RAY AND MAGNETIC DEATH OF INTERMEDIATE MASS STARS (2014)
Journal Article
Drake, J. J., Braithwaite, J., Kashyap, V., Günther, H. M., & Wright, N. J. (in press). BURN OUT OR FADE AWAY? ON THE X-RAY AND MAGNETIC DEATH OF INTERMEDIATE MASS STARS. Astrophysical Journal, 786(2), 136. https://doi.org/10.1088/0004-637x/786/2/136

The nature of the mechanisms apparently driving X-rays from intermediate mass stars lacking strong convection zones or massive winds remains poorly understood, and the possible role of hidden, lower mass close companions is still unclear. A 20 ks Cha... Read More about BURN OUT OR FADE AWAY? ON THE X-RAY AND MAGNETIC DEATH OF INTERMEDIATE MASS STARS.

Ultraviolet-excess sources with a red/infrared counterpart: low-mass companions, debris discs and QSO selection (2014)
Journal Article
Wright, N. J. (2014). Ultraviolet-excess sources with a red/infrared counterpart: low-mass companions, debris discs and QSO selection. Monthly Notices of the Royal Astronomical Society, 2-13. https://doi.org/10.1093/mnras/stt1492

We present the result of the cross-matching between ultraviolet (UV)-excess sources selected from the UV-Excess Survey of the Northern Galactic Plane (UVEX) and several infrared (IR) surveys (2MASS, UKIDSS and WISE). From the position in the (J - H)... Read More about Ultraviolet-excess sources with a red/infrared counterpart: low-mass companions, debris discs and QSO selection.

Extreme infrared variables from UKIDSS – I. A concentration in star-forming regions (2014)
Journal Article
Contreras Peña, C., Lucas, P. W., Froebrich, D., Kumar, M. S. N., Goldstein, J., Drew, J. E., …Wright, N. J. (2014). Extreme infrared variables from UKIDSS – I. A concentration in star-forming regions. Monthly Notices of the Royal Astronomical Society, 439(2), 1829-1854. https://doi.org/10.1093/mnras/stu063

We present initial results of the first panoramic search for high-amplitude near-infrared variability in the Galactic plane. We analyse the widely separated two-epoch K-band photometry in the fifth and seventh data releases of the UKIDSS Galactic pla... Read More about Extreme infrared variables from UKIDSS – I. A concentration in star-forming regions.

The ionized nebula surrounding the red supergiant W26 in Westerlund 1 (2014)
Journal Article
Wright. (2014). The ionized nebula surrounding the red supergiant W26 in Westerlund 1. Monthly Notices of the Royal Astronomical Society, 1-5. https://doi.org/10.1093/mnrasl/slt127

We present Ha images of an ionized nebula surrounding the M2-5Ia red supergiant (RSG) W26 in the massive star cluster Westerlund 1. The nebula consists of a circumstellar shell or ring ~0.1 pc in diameter and a triangular nebula ~0.2 pc from the star... Read More about The ionized nebula surrounding the red supergiant W26 in Westerlund 1.

Dynamical evolution of star-forming regions (2013)
Journal Article
Wright. (2013). Dynamical evolution of star-forming regions. Monthly Notices of the Royal Astronomical Society, 620-638. https://doi.org/10.1093/mnras/stt2231

We model the dynamical evolution of star-forming regions with a wide range of initial properties. We follow the evolution of the regions’ substructure using the Q-parameter, we search for dynamical mass segregation using the ?MSR technique, and we al... Read More about Dynamical evolution of star-forming regions.

Dynamical evolution of star-forming regions (2013)
Journal Article
Parker, R. J., Wright, N. J., Goodwin, S. P., & Meyer, M. R. (2013). Dynamical evolution of star-forming regions. Monthly Notices of the Royal Astronomical Society, 438(1), 620-638. https://doi.org/10.1093/mnras/stt2231

We model the dynamical evolution of star-forming regions with a wide range of initial properties. We follow the evolution of the regions’ substructure using the Q-parameter, we search for dynamical mass segregation using the ?MSR technique, and we al... Read More about Dynamical evolution of star-forming regions.

Constraints on massive star formation: Cygnus OB2 was always an association (2013)
Journal Article
Wright, N. J., Parker, R. J., Goodwin, S. P., & Drake, J. J. (2014). Constraints on massive star formation: Cygnus OB2 was always an association. Monthly Notices of the Royal Astronomical Society, 438(1), 639-646. https://doi.org/10.1093/mnras/stt2232

We examine substructure and mass segregation in the massive OB association Cygnus OB2 to better understand its initial conditions. Using a well-understood Chandra X-ray selected sample of young stars, we find that Cyg OB2 exhibits considerable physic... Read More about Constraints on massive star formation: Cygnus OB2 was always an association.

A determination of the space density and birth rate of hydrogen-line (DA) white dwarfs in the Galactic plane, based on the UVEX survey (2013)
Journal Article
Verbeek, K., Groot, P. J., Nelemans, G., Scaringi, S., Napiwotzki, R., Drew, J. E., …Zijlstra, A. A. (2013). A determination of the space density and birth rate of hydrogen-line (DA) white dwarfs in the Galactic plane, based on the UVEX survey. Monthly Notices of the Royal Astronomical Society, 434(4), 2727-2741. https://doi.org/10.1093/mnras/stt1005

We present a determination of the average space density and birth rate of hydrogen-line (DA) white dwarfs within a radius of 1 kpc around the Sun, based on an observational sample of 360 candidate white dwarfs with g < 19.5 and (g − r) < 0.4, selecte... Read More about A determination of the space density and birth rate of hydrogen-line (DA) white dwarfs in the Galactic plane, based on the UVEX survey.

THE PROTOPLANETARY DISKS IN THE NEARBY MASSIVE STAR-FORMING REGION CYGNUS OB2 (2013)
Journal Article
Guarcello, M. G., Drake, J. J., Wright, N. J., Drew, J. E., Gutermuth, R. A., Hora, J. L., …King, R. (in press). THE PROTOPLANETARY DISKS IN THE NEARBY MASSIVE STAR-FORMING REGION CYGNUS OB2. Astrophysical Journal, 773(2), 135. https://doi.org/10.1088/0004-637x/773/2/135

The formation of stars in massive clusters is one of the main modes of the star formation process. However, the study of massive star-forming regions is hampered by their typically large distances to the Sun. One exception to this is the massive star... Read More about THE PROTOPLANETARY DISKS IN THE NEARBY MASSIVE STAR-FORMING REGION CYGNUS OB2.

New Galactic supernova remnants discovered with IPHAS (2013)
Journal Article
Sabin, L., Parker, Q. A., Contreras, M. E., Olguín, L., Frew, D. J., Stupar, M., …Morris, R. A. H. (2013). New Galactic supernova remnants discovered with IPHAS. Monthly Notices of the Royal Astronomical Society, 431(1), 279-291. https://doi.org/10.1093/mnras/stt160

As part of a systematic search programme of a 10° wide strip of the northern Galactic plane, we present preliminary evidence for the discovery of four (and possibly five) new supernova remnants (SNRs). The pilot search area covered the 19–20 h right... Read More about New Galactic supernova remnants discovered with IPHAS.

First results of an Hα based search of classical Be stars in the Perseus Arm and beyond (2013)
Journal Article
Raddi, R., Drew, J. E., Fabregat, J., Steeghs, D., Wright, N. J., Sale, S. E., …Drake, J. J. (2013). First results of an Hα based search of classical Be stars in the Perseus Arm and beyond. Monthly Notices of the Royal Astronomical Society, 430(3), 2169-2187. https://doi.org/10.1093/mnras/stt038

We investigate a region of the Galactic plane, between 120° ≤ ℓ ≤ 140° and −1° ≤ b ≤ +4°, and uncover a population of moderately reddened (E(B − V) ∼ 1) classical Be stars within and beyond the Perseus and Outer Arms. 370 candidate emission-line star... Read More about First results of an Hα based search of classical Be stars in the Perseus Arm and beyond.

The stellar activity-rotation relationship: The stellar activity-rotation relationship (2013)
Journal Article
Wright, N., Drake, J., Mamajek, E., & Henry, G. (2013). The stellar activity-rotation relationship: The stellar activity-rotation relationship. Astronomische Nachrichten, 334(1-2), 151-154. https://doi.org/10.1002/asna.201211764

Using a new catalog of 824 solar and late-type stars with measured X-ray luminosities and rotation periods we have studied the relationship between rotation and stellar activity that is believed to be a probe of the underlying stellar dynamo. Using a... Read More about The stellar activity-rotation relationship: The stellar activity-rotation relationship.

OB Associations
Presentation / Conference
Jeffries, & Wright. OB Associations. Presented at Protostars and Planets VII

OB associations are low-density groups of young stars that are dispersing from their birth environment into the Galactic field. They are important for understanding the star formation process, early stellar evolution, the properties and distribution... Read More about OB Associations.