J. E. Drew
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View article: WEAVE First Light Observations: Origin and Dynamics of the Shock Front in Stephan’s Quintet
WEAVE First Light Observations: Origin and Dynamics of the Shock Front in Stephan’s Quintet Open
We present a detailed study of the large-scale shock front in Stephan’s Quintet, a by-product of past and ongoing interactions. Using integral-field spectroscopy from the new William Herschel Telescope Enhanced Area Velocity Explorer (WEAV…
View article: Circumstellar Disk Accretion Across the Lagoon Nebula: The Influence of Environment and Stellar Mass
Circumstellar Disk Accretion Across the Lagoon Nebula: The Influence of Environment and Stellar Mass Open
Pre-main-sequence disk accretion is pivotal for determining the final stellar properties and the early conditions for close-in planets. We aim to establish the impact of internal (stellar mass) and external (radiation field) parameters on …
View article: Circumstellar disk accretion across the Lagoon Nebula: the influence of environment and stellar mass
Circumstellar disk accretion across the Lagoon Nebula: the influence of environment and stellar mass Open
Pre-main sequence disk accretion is pivotal in determining the final stellar properties and the early conditions for close-in planets. We aim to establish the impact of internal (stellar mass) and external (radiation field) parameters on d…
View article: Classification of Chandra X-Ray Sources in Cygnus OB2
Classification of Chandra X-Ray Sources in Cygnus OB2 Open
We have devised a predominantly Naive Bayes−based method to classify X-ray sources detected by Chandra in the Cygnus OB2 association into members, foreground objects, and background objects. We employ a variety of X-ray, optical, and infra…
View article: Diffuse X-Ray Emission in the Cygnus OB2 Association
Diffuse X-Ray Emission in the Cygnus OB2 Association Open
We present a large-scale study of diffuse X-ray emission in the nearby massive stellar association Cygnus OB2 as part of the Chandra Cygnus OB2 Legacy Program. We used 40 Chandra X-ray ACIS-I observations covering ∼1.0 deg 2 . After removi…
View article: Classification of Chandra X-ray Sources in Cygnus OB2
Classification of Chandra X-ray Sources in Cygnus OB2 Open
We have devised a predominantly Naive Bayes method to classify the optical/IR matches to X-ray sources detected by Chandra in the Cygnus OB2 association into foreground, member, and background objects. We employ a variety of X-ray, optical…
View article: The wide-field, multiplexed, spectroscopic facility WEAVE: Survey design, overview, and simulated implementation
The wide-field, multiplexed, spectroscopic facility WEAVE: Survey design, overview, and simulated implementation Open
WEAVE, the new wide-field, massively multiplexed spectroscopic survey facility for the William Herschel Telescope, saw first light in late 2022. WEAVE comprises a new 2-deg field-of-view prime-focus corrector system, a nearly 1000-multiple…
View article: <i>Gaia</i>-ESO survey: Massive stars in the Carina Nebula
<i>Gaia</i>-ESO survey: Massive stars in the Carina Nebula Open
Context. The Carina Nebula is one of the major massive star-forming regions in the Galaxy. Its relatively nearby distance (2.35 kpc) makes it an ideal laboratory for the study of massive star formation, structure, and evolution, both for i…
View article: Gaia-ESO Survey: massive stars in the Carina Nebula. A new census of OB stars
Gaia-ESO Survey: massive stars in the Carina Nebula. A new census of OB stars Open
The Gaia-ESO survey sample of massive OB stars in the Carina Nebula consists of 234 stars. The addition of brighter sources from the Galactic O-Star Spectroscopic Survey and additional sources from the literature allows us to create the mo…
View article: The wide-field, multiplexed, spectroscopic facility WEAVE: Survey design, overview, and simulated implementation
The wide-field, multiplexed, spectroscopic facility WEAVE: Survey design, overview, and simulated implementation Open
WEAVE, the new wide-field, massively multiplexed spectroscopic survey facility for the William Herschel Telescope, will see first light in late 2022. WEAVE comprises a new 2-degree field-of-view prime-focus corrector system, a nearly 1000-…
View article: Spectroscopic follow-up of a subset of the <i>Gaia</i>/IPHAS catalogue of Hα-excess sources
Spectroscopic follow-up of a subset of the <i>Gaia</i>/IPHAS catalogue of Hα-excess sources Open
State-of-the-art techniques to identify Hα emission-line sources in narrow-band photometric surveys consist of searching for Hα excess with reference to nearby objects in the sky (position-based selection). However, while this approach usu…
View article: Spectroscopic follow-up of a sub-set of the Gaia/IPHAS catalogue of Hα-excess sources
Spectroscopic follow-up of a sub-set of the Gaia/IPHAS catalogue of Hα-excess sources Open
State-of-the-art techniques to identify Hαemission line sources in narrow-band photometric surveys consist of searching for Hαexcess with reference to nearby objects in the sky (position-based selection). However, while this approach usual…
View article: The Gaia-ESO Public Spectroscopic Survey: Motivation, implementation, GIRAFFE data processing, analysis, and final data products
The Gaia-ESO Public Spectroscopic Survey: Motivation, implementation, GIRAFFE data processing, analysis, and final data products Open
The Gaia-ESO Public Spectroscopic Survey is an ambitious project designed to obtain astrophysical parameters and elemental abundances for 100,000 stars, including large representative samples of the stellar populations in the Galaxy, and a…
View article: The <i>Gaia</i>-ESO Public Spectroscopic Survey: Motivation, implementation, GIRAFFE data processing, analysis, and final data products
The <i>Gaia</i>-ESO Public Spectroscopic Survey: Motivation, implementation, GIRAFFE data processing, analysis, and final data products Open
Context. The Gaia-ESO Public Spectroscopic Survey is an ambitious project designed to obtain astrophysical parameters and elemental abundances for 100 000 stars, including large representative samples of the stellar populations in the Gala…
View article: Radial velocities from far red spectra of Carina Arm O and early B stars
Radial velocities from far red spectra of Carina Arm O and early B stars Open
Massive O and early B stars are important markers of recent star formation and exert a significant influence on their environments during their short lives via photoionization and winds and when they explode as supernovae. In the Milky Way…
View article: UGPS J194310+183851: an unusual optical and X-ray faint cataclysmic variable?
UGPS J194310+183851: an unusual optical and X-ray faint cataclysmic variable? Open
The growing number of multi-epoch optical and infrared sky surveys are uncovering unprecedented numbers of new variable stars, of an increasing number of types. The short interval between observations in adjacent near-infrared filters in t…
View article: The <i>Gaia</i>-ESO Public Spectroscopic Survey: Implementation, data products, open cluster survey, science, and legacy
The <i>Gaia</i>-ESO Public Spectroscopic Survey: Implementation, data products, open cluster survey, science, and legacy Open
Context. In the last 15 years different ground-based spectroscopic surveys have been started (and completed) with the general aim of delivering stellar parameters and elemental abundances for large samples of Galactic stars, complementing …
View article: The <i>Gaia</i>-ESO Survey: Target selection of open cluster stars
The <i>Gaia</i>-ESO Survey: Target selection of open cluster stars Open
Context. The Gaia -ESO Survey (GES) is a public, high-resolution spectroscopic survey, conducted with the multi-object spectrograph Fibre Large Array Multi Element Spectrograph (FLAMES) on the Very Large Telescope (European Southern Observ…
View article: Proper motions of OB stars in the far Carina Arm
Proper motions of OB stars in the far Carina Arm Open
In large-scale maps of the Galactic disc, the Carina Arm stands out as a clear spiral feature, hosting prominent star clusters and associations rich in massive stars. We study the proper motions of 4199 O and early B most likely in the far…
View article: High-resolution H<i>α</i> imaging of the northern Galactic plane and the IGAPS image database
High-resolution H<i>α</i> imaging of the northern Galactic plane and the IGAPS image database Open
The INT Galactic Plane Survey (IGAPS) is the merger of the optical photometric surveys IPHAS and UVEX based on data from the Isaac Newton Telescope (INT) obtained between 2003 and 2018. It captures the entire northern Galactic plane within…
View article: High resolution H-alpha imaging of the Northern Galactic Plane, and the IGAPS images database
High resolution H-alpha imaging of the Northern Galactic Plane, and the IGAPS images database Open
The INT Galactic Plane Survey (IGAPS) is the merger of the optical photometric surveys, IPHAS and UVEX, based on data from the Isaac Newton Telescope (INT) obtained between 2003 and 2018. These capture the entire northern Galactic plane wi…
View article: Population-based identification of H <i>α</i>-excess sources in the <i>Gaia</i> DR2 and IPHAS catalogues
Population-based identification of H <i>α</i>-excess sources in the <i>Gaia</i> DR2 and IPHAS catalogues Open
We present a catalogue of point-like H α-excess sources in the Northern Galactic Plane. Our catalogue is created using a new technique that leverages astrometric and photomeric information from Gaia to select H α-bright outliers in the INT…
View article: Integration and early testing of WEAVE: the next-generation spectroscopy facility for the William Herschel Telescope
Integration and early testing of WEAVE: the next-generation spectroscopy facility for the William Herschel Telescope Open
We present an update on the overall integration progress of the WEAVE next-generation spectroscopy facility for the William Herschel Telescope (WHT), now scheduled for first light in early-2021, with almost all components now arrived at th…
View article: H α fluxes and extinction distances for planetary nebulae in the IPHAS survey of the northern galactic plane
H α fluxes and extinction distances for planetary nebulae in the IPHAS survey of the northern galactic plane Open
We report H α filter photometry for 197 Northern hemisphere planetary nebulae (PNe) obtained using imaging data from the IPHAS survey. H α+[N ii] fluxes were measured for 46 confirmed or possible PNe discovered by the IPHAS survey and for …
View article: IGAPS: the merged IPHAS and UVEX optical surveys of the northern Galactic plane
IGAPS: the merged IPHAS and UVEX optical surveys of the northern Galactic plane Open
The INT Galactic Plane Survey (IGAPS) is the merger of the optical photometric surveys, IPHAS and UVEX, based on data from the Isaac Newton Telescope (INT) obtained between 2003 and 2018. Here, we present the IGAPS point source catalogue. …
View article: The Breakthrough Listen Search for Extraterrestrial Intelligence
The Breakthrough Listen Search for Extraterrestrial Intelligence Open
The discovery of the ubiquity of habitable extrasolar planets, combined with revolutionary advances in instrumentation and observational capabilities, have ushered in a renaissance in the millenia-old quest to answer our most profound ques…
View article: A fast radio burst with frequency-dependent polarization detected during Breakthrough Listen observations
A fast radio burst with frequency-dependent polarization detected during Breakthrough Listen observations Open
Here, we report on the detection and verification of fast radio burst FRB 180301, which occurred on utc 2018 March 1 during the Breakthrough Listen observations with the Parkes telescope. Full-polarization voltage data of the detection wer…
View article: The O star hinterland of the Galactic starburst, NGC 3603
The O star hinterland of the Galactic starburst, NGC 3603 Open
The very bright and compact massive young cluster, NGC 3603, has been cited as an example of a starburst in the Milky Way and compared with the much-studied R136/30 Doradus region in the Large Magellanic Cloud. Here we build on the discove…
View article: A study of full space motions of outer Galactic disc A and F stars in two deep pencil beams
A study of full space motions of outer Galactic disc A and F stars in two deep pencil beams Open
A and F stars can be used as probes of outer Galactic disk kinematics: here\nwe extend the work of Harris et al. (2018) by crossmatching their A/F sample\nwith Gaia DR2 to bring in proper motions. These are combined with the already\nmeasu…
View article: Disentangling the spatial substructure of Cygnus OB2 from <i>Gaia</i> DR2
Disentangling the spatial substructure of Cygnus OB2 from <i>Gaia</i> DR2 Open
For the first time, we have explored the spatial substructure of the Cygnus OB2 association using parallaxes from the recent second Gaia data release. We find significant line-of-sight substructure within the association, which we quantify…