Now showing items 1-6 of 6

    • The Chandra Cygnus OB2 Legacy Survey: Design and X-Ray Point-source Catalog 

      Wright, Nicholas J.; Drake, Jeremy J.; Guarcello, Mario G.; Aldcroft, Tom L.; Kashyap, Vinay L.; Damiani, Francesco; DePasquale, Joe; Fruscione, Antonella (2023-11-01)
      The Cygnus OB2 association is the largest concentration of young and massive stars within 2 kpc of the Sun, including an estimated ∼65 O-type stars and hundreds of OB stars. The Chandra Cygnus OB2 Legacy Survey is a large ...
    • Chandra observations of Cygnus OB2 

      Wright, N.J.; Drake, Jeremy J.; Drew, J.E.; Vink, Jorick S. (Springer Nature, 2012)
      Cygnus OB2 is the nearest example of a massive star forming region, containing over 50 O-type stars and hundreds of B-type stars.We have analyzed two Chandra pointings in Cyg OB2, detecting ∼1,700 X-ray sources, of which ...
    • Chasing the identification of ASCA Galactic Objects (ChIcAGO): An X-ray survey of unidentified sources in the galactic plane. I : Source sample and initial results 

      Anderson, G.E.; Gaensler, B.M.; Kaplan, D.L.A.; Slane, P.O.; Muno, M.P.; Posselt, B.; Hong, J.; Murray, Stephen S.; Steeghs, D.T.H.; Brogan, C.L.; Drake, Jeremy J.; Farrell, S.A.; Benjamin, R.A.; Chakrabarty, D.; Drew, J.E.; Finley, J.P.; Grindlay, J.E.; Lazio, T.J.W.W.; Lee, J.C.; Mauerhan, J.C.; Van Kerkwijk, M.H. (2014-05)
      We present the Chasing the Identification of ASCA Galactic Objects (ChIcAGO) survey, which is designed to identify the unknown X-ray sources discovered during the ASCA Galactic Plane Survey (AGPS). Little is known about ...
    • Classification of Chandra X-Ray Sources in Cygnus OB2 

      Kashyap, Vinay L.; Guarcello, Mario G.; Wright, Nicholas J.; Drake, Jeremy J.; Flaccomio, Ettore; Aldcroft, Tom L.; Albacete Colombo, Juan F.; Briggs, Kevin; Damiani, Francesco; Drew, Janet E.; Martin, Eduardo L.; Micela, Giusi; Naylor, Tim; Sciortino, Salvatore (2023-11-01)
      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, ...
    • Constraints on massive star formation : Cygnus OB2 was always an association 

      Wright, Nicholas J.; Parker, Richard J.; Goodwin, Simon P.; Drake, Jeremy J. (2014-02-01)
      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 ...
    • The VST photometric hα survey of the Southern Galactic Plane and Bulge (VPHAS+) 

      Drew, J.E.; González-Solares, Eduardo A.; Greimel, Robert; Irwin, M.J.; Küpcü Yoldaş, A.; Lewis, J.R.; Barentsen, Geert; Eislöffel, Jochen; Farnhill, Hywel J.; Martin, Bill; Walton, Nicholas A.; Mohr-Smith, M.; Raddi, Roberto; Sale, Stuart E.; Wright, Nicholas J.; Groot, Paul J.; Barlow, Michael J.; Corradi, R.L.M.; Drake, Jeremy J.; Fabregat, Juan; Frew, David J.; Gänsicke, Boris T.; Knigge, Christian; Mampaso, Antonio; Morris, R.A.H.; Naylor, Tim J.; Parker, Quentin A.; Phillipps, Steven; Ruhland, Christine; Steeghs, Danny T H; Unruh, Y.C.; Vink, Jorick S.; Wesson, Roger; Zijlstra, Albert (2014-05-21)
      The VST Photometric Hα Survey of the Southern Galactic Plane and Bulge (VPHAS+) is surveying the southern Milky Way in u, g, r, i and Hα at ~1 arcsec angular resolution. Its footprint spans the Galactic latitude range -5o ...