Browsing by Author "Drew, J. E."

Now showing items 1-16 of 16

    • A and F stars as probes of outer Galactic disc kinematics 

      Harris, A.; Drew, J. E.; Farnhill, H. J.; Monguió, M.; Gebran, M.; Wright, N. J.; Drake, J. J.; Sale, S. E. (2018-04-01)
      Previous studies of the rotation law in the outer Galactic disc have mainly used gas tracers or clump giants. Here, we explore A and F stars as alternatives: these provide a much denser sampling in the outer disc than gas ...

    • The binary fraction of planetary nebula central stars - III. the promise of VPHAS+ 

      Barker, Helen; Zijlstra, Albert; Marco, Orsola De; Frew, David J.; Drew, J. E.; Corradi, R. L. M.; Eislöffel, Jochen; Parker, Quentin A. (2018-04-21)
      The majority of planetary nebulae (PNe) are not spherical, and current single-star models cannot adequately explain all the morphologies we observe. This has led to the Binary Hypothesis, which states that PNe are ...

    • Calibrated and completeness-corrected optical stellar density maps of the Northern Galactic Plane 

      Farnhill, H. J.; Drew, J. E.; Barentsen, G.; González-Solares, E. A. (2016-03-21)
      Following on from the second release of calibrated photometry from IPHAS, the INT/WFC Photometric Hα Survey of the Northern Galactic Plane, we present incompleteness-corrected stellar density maps in the r and i photometric ...

    • Diffuse X-Ray Emission in the Cygnus OB2 Association 

      Albacete-Colombo, J. F.; Drake, J. J.; Flaccomio, E.; Wright, N. J.; Kashyap, V.; Guarcello, M. G.; Briggs, K.; Drew, J. E.; Fenech, D. M.; Micela, G.; McCollough, M.; Prinja, R. K.; Schneider, N.; Sciortino, S.; Vink, J. S. (2023-11-01)
      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 ...

    • Disentangling the spatial substructure of Cygnus OB2 from Gaia DR2 

      Berlanas, S. R.; Wright, N.; Herrero, A.; Drew, J. E.; Lennon, D. J. (2019-04-01)
      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, ...

    • The Gaia-ESO Survey: pre-main-sequence stars in the young open cluster NGC 3293 

      Delgado, A. J.; Sampedro, L.; Alfaro, E. J.; Costado, M. T.; Yun, J. L.; Frasca, A.; Lanzafame, A. C.; Drew, J. E.; Eislöffel, J.; Blomme, R.; Morel, T.; Lobel, A.; Semaan, T.; Randich, S.; Jeffries, R. D.; Micela, G.; Vallenari, A.; Kalari, V.; Gilmore, G.; Flaccomio, E.; Carraro, G.; Lardo, C.; Monaco, L.; Prisinzano, L.; Sousa, S. G.; Morbidelli, L.; Lewis, J.; Koposov, S.; Hourihane, A.; Worley, C.; Casey, A.; Franciosini, E.; Sacco, G.; Magrini, L. (2016-08-11)
      The young open cluster NGC3293 is included in the observing program of the Gaia-ESO survey (GES). The radial velocity values provided have been used to assign cluster membership probabilities by means of a single-variable ...

    • The Gaia/IPHAS and Gaia/KIS value-added catalogues 

      Scaringi, S.; Knigge, C.; Drew, J. E.; Monguió, M.; Breedt, E.; Fratta, M.; Gänsicke, B.; Maccarone, T. J.; Pala, A. F.; Schill, C. (2018-12-11)
      We present a sub-arcsecond crossmatch of Gaia DR2 against the INT Photometric Ha Survey of the Northern Galactic Plane Data Release 2 (IPHAS DR2) and the Kepler-INT Survey (KIS). The resulting value-added catalogues (VACs) ...

    • Massive stars in the hinterland of the young cluster, Westerlund 2 

      Drew, J. E.; Herrero, A.; Mohr-Smith, M.; Monguio, M.; Wright, N. J.; Kupfer, T.; Napiwotzki, R. (2018-10-21)
      An unsettled question concerning the formation and distribution of massive stars is whether they must be born in massive clusters and, if found in less dense environments, whether they must have migrated there. With the ...

    • The O star hinterland of the Galactic starburst, NGC 3603 

      Drew, J. E.; Monguió, M.; Wright, N. J. (2019-06-01)
      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 ...

    • Physical parameters of IPHAS-selected classical Be stars. (I. Determination procedure and evaluation of the results.) 

      Gkouvelis, L.; Fabregat, J.; Zorec, J.; Steeghs, D.; Drew, J. E.; Raddi, R.; Wright, N. J.; Drake, J. J. (2016-07-01)
      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 ...

    • A search for white dwarfs in the Galactic plane: : the field and the open cluster population 

      Raddi, R.; Catalan, S.; Gaensicke, B. T.; Hermes, J. J.; Napiwotzki, R.; Koester, D.; Tremblay, P. -E.; Barentsen, G.; Farnhill, H. J.; Mohr-Smith, M.; Drew, J. E.; Groot, P. J.; Guzman-Ramirez, L.; Parker, Q. A.; Steeghs, D.; Zijlstra, A. (2016-04-01)
      We investigated the prospects for systematic searches of white dwarfs at low Galactic latitudes, using the VLT Survey Telescope (VST) H$\alpha$ Photometric Survey of the Galactic plane and Bulge (VPHAS+). We targeted 17 ...

    • A study of full space motions of outer Galactic disk A and F stars in two deep pencil beams 

      Harris, A.; Drew, J. E.; Monguió, M. (2019-05-01)
      A and F stars can be used as probes of outer Galactic disc kinematics: here we extend the work of Harris et al. by cross-matching their A/F sample with Gaia DR2 to bring in proper motions. These are combined with the already ...

    • A Tale of Three Cities : OmegaCAM discovers multiple sequences in the color-magnitude diagram of the Orion Nebula Cluster 

      Beccari, G.; Petr-Gotzens, M.G.; Boffin, H.M.J.; Romaniello, M.; Fedele, D.; Carraro, G.; Marchi, G. De; de Wit, W.J.; Drew, J. E.; Kalari, V. M.; Manara, Carlo Felice; Martin, Eduardo L.; Mieske, S.; Panagia, N.; Testi, L.; Vink, Jorick S.; Walsh, J. R.; Wright, N. J. (2017-07-27)
      As part of the Accretion Discs in H$\alpha$ with OmegaCAM (ADHOC) survey, we imaged in r, i and H-alpha a region of 12x8 square degrees around the Orion Nebula Cluster. Thanks to the high-quality photometry obtained, we ...

    • UGPS J194310+183851 : an Unusual Optical and X-ray Faint Cataclysmic Variable? 

      Morris, C.; Maccarone, T. J.; Lucas, P. W.; Strader, J.; Britt, C. T.; Miller, N.; Swihart, S. J.; Cooper, W. J.; Drew, J. E.; Guo, Z. (2022-08-01)
      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 ...

    • VIRAC: The VVV Infrared Astrometric Catalogue 

      Smith, L. C.; Lucas, P. W.; Kurtev, R.; Smart, R.; Minniti, D.; Borissova, J.; Jones, H. R. A; Zhang, Z. H.; Marocco, F.; Peña, C. Contreras; Gromadzki, M.; Kuhn, M. A.; Drew, J. E.; Pinfield, D. J.; Bedin, L.R. (2018-02-21)
      We present VIRAC version 1, a near-infrared proper motion and parallax catalogue of the VISTA Variables in the Via Lactea (VVV) survey for 312 587 642 unique sources averaged across all overlapping pawprint and tile images ...

    • The wide-field, multiplexed, spectroscopic facility WEAVE: Survey design, overview, and simulated implementation 

      WEAVE consortium; Jin, Shoko; Trager, Scott C.; Dalton, Gavin B.; Aguerri, J. Alfonso L.; Drew, J. E.; Falcón-Barroso, Jesús; Gänsicke, Boris T.; Hill, Vanessa; Iovino, Angela; Pieri, Matthew M.; Poggianti, Bianca M.; Smith, D. J. B.; Vallenari, Antonella; Abrams, Don Carlos; Aguado, David S.; Antoja, Teresa; Aragón-Salamanca, Alfonso; Ascasibar, Yago; Babusiaux, Carine; Balcells, Marc; Barrena, R.; Battaglia, Giuseppina; Belokurov, Vasily; Bensby, Thomas; Bonifacio, Piercarlo; Bragaglia, Angela; Carrasco, Esperanza; Carrera, Ricardo; Cornwell, Daniel J.; Domínguez-Palmero, Lilian; Duncan, Kenneth J.; Famaey, Benoit; Fariña, Cecilia; Gonzalez, Oscar A.; Guest, Steve; Hatch, Nina A.; Hess, Kelley M.; Hoskin, Matthew J.; Irwin, Mike; Knapen, Johan H.; Monguió, Maria; Raddi, Roberto; Drake, Alyssa; Gledhill, T. M.; Hardcastle, Martin J.; Harris, Amy; Jarvis, Matt J.; Read, Shaun C.; Williams, Wendy L.; Wright, Nicholas J. (2023-03-11)
      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, ...