Browsing by Author "Froebrich, D."

Now showing items 1-15 of 15

    • Analysis of physical processes in eruptive YSOs with near infrared spectra and multi-wavelength light curves 

      Guo, Zhen; Lucas, P. W.; Contreras Pena, Carlos; Smith, L. C.; Morris, C.; Kurtev, R. G.; Borissova, J.; Alonso-García, J.; Minniti, D.; Chené, A. -N.; Kumar, M. S. N.; Garatti, A. Caratti o; Froebrich, D. (2021-03-26)
      The decade-long Vista Variables in the Via Lactea (VVV) survey has detected numerous highly variable young stellar objects (YSOs). We present a study of 61 highly variable VVV YSOs (Delta Ks = 1-5 mag), combining near ...

    • ATLASGAL - properties of a complete sample of Galactic clumps 

      Urquhart, J.S.; Koenig, C.; Giannetti, A.; Leurini, S.; Moore, T. J. T.; Eden, D.~J.; Pillai, T.; Thompson, M. A.; Braiding, C.; Burton, M. G.; Csengeri, T.; Dempsey, J. T.; Figura, C.C.; Froebrich, D.; Menten, K.~M.; Schuller, F.; Smith, M. D.; Wyrowski, F. (2018-01-01)
      The APEX Telescope Large Area Survey of the Galaxy (ATLASGAL) is an unbiased 870 μm submillimetre survey of the inner Galactic plane (|ℓ| < 60° with |b| < 1.°5). It is the largest and most sensitive ground-based submillimetre ...

    • A census of molecular hydrogen outflows and their sources along the Orion A molecular ridge: Characteristics and overall distribution 

      Davis, C.J.; Froebrich, D.; Stanke, T.; Megeath, S.T.; Kumar, M.S.N.; Adamson, A.J.; Eisloffel, J.; Gredel, R.; Khanzadyan, T.; Lucas, P.W.; Smith, M.D.; Varricatt, W.P. (2009)

    • Extended H2 emission line sources from UWISH2 

      Froebrich, D.; Makin, S. V.; Davis, C.J.; Gledhill, T.; Kim, Y.; Koo, B. -C.; Rowles, J.; Eislöffel, J.; Nicholas, J.; Lee, J. J.; Williamson, J.; Buckner, A. S. M. (2015-12-11)
      We present the extended source catalogue for the UKIRT Wide Field Infrared Survey for H2 (UWISH2). The survey is unbiased along the inner Galactic Plane from l≈357deg to l≈65deg and |b| ≤ 1 ∘.5 and covers 209 deg2. A further ...

    • Extreme infrared variables from UKIDSS-I : A concentration in star-forming regions 

      Contreras Peña, C.; Lucas, P.W.; Froebrich, D.; Kumar, M.S.N.; Goldstein, J.; Drew, J.E.; Adamson, A.J.; Davis, C.J.; Barentsen, Geert; Wright, N.J. (2014-04-01)
      We present initial results of the first panoramic search for high-amplitude near-infrared variability in theGalactic plane.We analyse the widely separated two-epoch K-band photometry in the fifth and seventh data releases ...

    • Infrared spectroscopy of eruptive variable protostars from VVV 

      Peña, C. Contreras; Lucas, P. W.; Kurtev, R.; Minniti, D.; Garatti, A. Caratti o; Marocco, F.; Thompson, M. A.; Froebrich, D.; Kumar, N.; Stimson, W.; Molina, C. Navarro; Borissova, J.; Gledhill, T.; Terzi, R. (2017-03-01)
      In a companion work (Paper I) we detected a large population of highly variable Young Stellar Objects (YSOs) in the Vista Variables in the Via Lactea (VVV) survey, typically with class I or flat spectrum spectral energy ...

    • Mercer 5: a probable new globular cluster in the Galactic bulge 

      Longmore, A.J.; Kurtev, R.; Lucas, P.W.; Froebrich, D.; de Grijs, R.; Ivanov, V.D.; Maccarone, T. J.; Borissova, J.; Ker, L. M. (2011-09)
      We present a detailed study of a dust-obscured Galactic star cluster Mercer 5 ([MCM2005b] 5) in an extremely crowded field in the Milky Way. Near-infrared (near-IR) photometry from United Kingdom Infrared Digital Sky Surveys ...

    • The most variable VVV sources: eruptive protostars, dipping giants in the Nuclear Disc and others 

      Lucas, P. W.; Smith, L. C.; Guo, Z.; Peña, C. Contreras; Minniti, D.; Miller, N.; Alonso-García, Javier; Catelan, M.; Borissova, J.; Saito, R. K.; Kurtev, R.; Navarro, M. G.; Morris, C.; Muthu, H.; Froebrich, D.; Ivanov, V. D.; Bayo, A.; Garatti, A. Caratti o; Sanders, J. L. (2024-02-01)
      We have performed a comprehensive search of a VISTA Variables in the Via Lactea (VVV) data base of 9.5 yr light curves for variable sources with ΔKs ≥ 4 mag, aiming to provide a large sample of high amplitude eruptive young ...

    • New Galactic star clusters discovered in the VVV survey 

      Borissova, J.; Bonatto, C.; Kurtev, R.; Clarke, J. R. A.; Penaloza, F.; Sale, S. E.; Minniti, D.; Alonso-Garcia, J.; Artigau, E.; Barba, R.; Bica, E.; Baume, G. L.; Catelan, M.; Chene, A. N.; Dias, B.; Folkes, S. L.; Froebrich, D.; Geisler, D.; de Grijs, R.; Hanson, M. M.; Hempel, M.; Ivanov, V. D.; Kumar, M. S. N.; Lucas, P.W.; Mauro, F.; Moni Bidin, C.; Rejkuba, M.; Saito, R. K.; Tamura, M.; Toledo, I. (2011-08)
      Context. VISTA Variables in the Via Lactea (VVV) is one of the six ESO Public Surveys operating on the new 4-m Visible and Infrared Survey Telescope for Astronomy (VISTA). VVV is scanning the Milky Way bulge and an adjacent ...

    • Old star clusters in the FSR catalogue 

      Froebrich, D.; Schmeja, S.; Lucas, P.W. (2010)
      We investigate the old star clusters in the sample of cluster candidates from the Froebrich, Scholz & Raftery (FSR) list. Based on photometry from the Two-Micron All-Sky Survey, we generated decontaminated colour–magnitude ...

    • Planetary Nebulae in the UWISH2 Galactic Plane survey 

      Gledhill, Timothy; Froebrich, D. (Cambridge University Press, 2017-09-30)
      UWISH2 is the first unbiassed imaging survey of v$=1-0$~S(1) molecular hydrogen emission ($\lambda=2.122~\mu$m) in the northern Galactic Plane. Here we discuss 284 extended emission line objects which we consider to be ...

    • A population of eruptive variable protostars in VVV 

      Peña, C. Contreras; Lucas, P. W.; Minniti, D.; Kurtev, R.; Stimson, W.; Molina, C. Navarro; Borissova, J.; Kumar, N.; Thompson, M. A.; Gledhill, T.; Terzi, R.; Froebrich, D.; Garatti, A. Caratti o (2017-03-01)
      We present the discovery of 816 high amplitude infrared variable stars (Delta Ks >1 mag) in 119 deg^2 of the Galactic midplane covered by the Vista Variables in the Via Lactea (VVV) survey. Almost all are new discoveries ...

    • Spectroscopic confirmation of high-amplitude eruptive YSOs and dipping giants from the VVV survey 

      Guo, Zhen; Lucas, P. W.; Kurtev, R.; Borissova, J.; Peña, C. Contreras; Yurchenko, S. N.; Smith, L. C.; Minniti, D.; Saito, R. K.; Bayo, A.; Catelan, M.; Alonso-García, Javier; Garatti, A. Caratti o; Morris, C.; Froebrich, D.; Tennyson, J.; Maucó, K.; Aguayo, A.; Miller, N.; Muthu, H. D. S. (2024-02-01)
      During the pre-main-sequence (pre-MS) evolution stage of a star, significant amounts of stellar mass are accreted during episodic accretion events, such as multidecade FUor-type outbursts. Here, we present a near-infrared ...

    • The UKIRT Hemisphere Survey: definition and J-band Data Release 

      Dye, S.; Lawrence, A.; Fan, X.; Kerr, T.; Varricatt, W.; Furnell, K. E.; Edge, A.; Irwin, M.; Hambly, N.; Lucas, P.; Almaini, O.; Chambers, K.; Hewett, P.; Liu, M.; McGreer, I.; Best, W.; Sutorius, E.; Froebrich, D.; Magnier, E.; Hasinger, G.; Lederer, S. M.; Bold, M.; Tedds, J. A. (2018-02-01)
      This paper defines the UK Infra-Red Telescope (UKIRT) Hemisphere Survey (UHS) and release of the remaining ~12 700 deg 2 of J-band survey data products. The UHS will provide continuous J- and K-band coverage in the Northern ...

    • UWISH2-the UKIRT Widefield Infrared Survey for H-2 

      Froebrich, D.; Davis, C. J.; Ioannidis, G.; Gledhill, T.; Takami, M.; Chrysostomou, A.; Drew, J.; Eisloeffel, J.; Gosling, A.; Gredel, R.; Hatchell, J.; Hodapp, K. W.; Kumar, M. S. N.; Lucas, P.W.; Matthews, H.; Rawlings, M. G.; Smith, M. D.; Stecklum, B.; Varricatt, W. P.; Lee, H. T.; Teixeira, P. S.; Aspin, C.; Khanzadyan, T.; Karr, J.; Kim, H. -J.; Koo, B. -C.; Lee, J. J.; Lee, Y. -H.; Magakian, T. Y.; Movsessian, T. A.; Nikogossian, E. H.; Pyo, T. S.; Stanke, T. (2011-05)
      We present the goals and preliminary results of an unbiased, near-infrared, narrow-band imaging survey of the first galactic quadrant (10 degrees < l < 65 degrees; -1<file name="mnr_18149_mu1.gif" type="gif"/>3 < b < +1<file ...