A deep 150 MHz Giant Metrewave Radio Telescope survey in Eridanus

被引:6
|
作者
George, Samuel J. [1 ]
Stevens, Ian R. [1 ]
机构
[1] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England
基金
英国科学技术设施理事会;
关键词
surveys; galaxies: active; galaxies: starburst; radio continuum: general;
D O I
10.1111/j.1365-2966.2008.13773.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present results of a 150 MHz survey of a field centred on epsilon Eridani, undertaken with the Giant Metrewave Radio Telescope (GMRT). The survey covers an area with a diameter of similar to 2 degrees, has a spatial resolution of similar to 30 arcsec and a noise level of sigma = 3.1 mJy at the pointing centre. These observations provide a deeper and higher resolution view of the 150 MHz radio sky than the 7C survey (although the 7C survey covers a much larger area). A total of 113 sources were detected, most are point-like, but 20 are extended. We present an analysis of these sources, in conjunction with the National Radio Astronomy Observatory (NRAO) Very Large Array (VLA) telescope Sky Survey (NVSS) (at 1.4 GHz) and VLA Low-frequency Sky Survey (VLSS) (at 74 MHz). This process allowed us to identify five Ultra-Steep Spectrum (USS) radio sources that are candidate high-redshift radio galaxies (HzRGs). In addition, we have derived the dN/dS distribution for these observations and compare our results with other low-frequency radio surveys.
引用
收藏
页码:741 / 751
页数:11
相关论文
共 50 条
  • [41] Imaging results from the legacy Giant Metrewave Radio Telescope Galaxy Cluster Key Project
    George, Lijo T.
    Kale, Ruta
    Wadadekar, Yogesh
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2021, 507 (03) : 4487 - 4506
  • [42] Evaluating Low-frequency Pulsar Observations to Monitor Dispersion with the Giant Metrewave Radio Telescope
    Jones, M. L.
    McLaughlin, M. A.
    Roy, J.
    Lam, M. T.
    Cordes, J. M.
    Kaplan, D. L.
    Bhattacharyya, B.
    Levin, L.
    ASTROPHYSICAL JOURNAL, 2021, 915 (01):
  • [43] A multifrequency study of giant radio sources - I. Low-frequency Giant Metrewave Radio Telescope observations of selected sources
    Konar, C.
    Jamrozy, M.
    Saikia, D. J.
    Machalski, J.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2008, 383 (02) : 525 - 538
  • [44] A complete sample of 21-cm absorbers at z ∼ 1.3: Giant Metrewave Radio Telescope survey using Mg II systems
    Gupta, N.
    Srianand, R.
    Petitjean, P.
    Noterdaeme, P.
    Saikia, D. J.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2009, 398 (01) : 201 - 220
  • [45] A Simultaneous Dual-frequency Scintillation Arc Survey of Six Bright Canonical Pulsars Using the Upgraded Giant Metrewave Radio Telescope
    Turner, Jacob E.
    Joshi, Bhal Chandra
    Mclaughlin, Maura A.
    Stinebring, Daniel R.
    ASTROPHYSICAL JOURNAL, 2024, 961 (01):
  • [46] Giant Metrewave Radio Telescope observations of neutral atomic hydrogen gas in the COSMOS field at z ∼ 0.37
    Rhee, Jonghwan
    Lah, Philip
    Chengalur, Jayaram N.
    Briggs, Frank H.
    Colless, Matthew
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2016, 460 (03) : 2675 - 2686
  • [47] A deep Giant Metre-wave Radio Telescope 610-MHz survey of the 1H XMM-Newton/Chandra survey field
    Moss, D.
    Seymour, N.
    McHardy, I. M.
    Dwelly, T.
    Page, M. J.
    Loaring, N. S.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2007, 378 (03) : 995 - 1006
  • [48] GIANT METREWAVE RADIO TELESCOPE DETECTION OF TWO NEW HI 21 cm ABSORBERS AT z ≈ 2
    Kanekar, N.
    ASTROPHYSICAL JOURNAL LETTERS, 2014, 797 (02)
  • [49] Prospects for the Giant Metrewave Radio Telescope to observe radio waves from ultra high energy particles interacting with the Moon
    Panda, Sukanta
    Mohanty, Subhendra
    Padmanabhan, Janardhan
    Stal, Oscar
    JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2007, (11):
  • [50] HI gas in rejuvenated radio galaxies: Giant metrewave radio telescope observations of the DDRG J1247+6723
    Saikia, D. J.
    Gupta, Neeraj
    Konar, C.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2007, 375 (01) : L31 - L35