Access to Astronomical Catalogues

J/MNRAS/387/344     BVRcIC photometry of V2615 Oph           (Munari+, 2008)
Optical evolution of Nova Ophiuchi 2007 = V2615 Oph.
    Munari U., Henden A., Valentini M., Siviero A., Dallaporta S., Ochner P.,
    Tomasoni S.
   <Mon. Not. R. Astron. Soc., 387, 344-348 (2008)>
   =2008MNRAS.387..344M
ADC_Keywords: Novae ; Binaries, cataclysmic ; Photometry, UBVRI

Keywords: novae - cataclysmic variables


Abstract:
    The moderately fast Nova Oph 2007 reached maximum brightness on 
    2007 March 28 at V=8.52, B-V=+1.12, V-Rc=+0.76, V-Ic=+1.59 and
    Rc-Ic=+0.83 , after fast initial rise and a pre-maximum halt lasting
    a week. Decline times were tV2=26.5, tB2=30, tV3=48.5 and
    tB3=56.5d. The distance to the nova is d=3.7±0.2kpc , the height
    above the Galactic plane is z=215pc, the reddening is E(B-V)=0.90 and
    the absolute magnitude at maximum is MmaxV=-7.2 and
    MmaxB=-7.0. The spectrum four days before maximum resembled a F6
    supergiant, in an agreement with broad-band colours. It later
    developed into that of a standard 'FeII'-class nova. Nine days past
    maximum, the expansion velocity estiIIted from the width of Hα
    emission component was ∼730km/s, and the displacement from it
    of the principal and diffuse-enhanced absorption systems was ∼650
    and 1380km/s, respectively. Dust probably formed and disappeared
    during the period from 82 to 100d past maximum, causing (at peak dust
    concentration) an extinction of ΔB=1.8mag and an extra
    ΔE(B-V)=0.44 reddening.

Description:
    The BVRcIc photometric evolution of NOph07 has been monitored, for
    seven months and over a 7mag decline, with three different telescopes:
    (a) the Sonoita Research Observatory (SRO) 0.35-m Celestron C14
    robotic telescope (b) the 0.30-m Meade RCX-400 f/8 Schmidt-Cassegrain
    telescope owned by Associazione Astrofili Valle di Cembra (Trento,
    Italy), and (c) the 0.50-m f/8 Ritchey-Cretien telescope operated on
    top of Mt. Zugna by Museo Civico di Rovereto (Trento, Italy)
Objects:
    ---------------------------------------------------
       RA   (2000)   DE      Designation(s)
    ---------------------------------------------------
    17 42 44.0   -23 40 35   V2615 Oph = NOVA Oph 2007
    ---------------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        50      116   Photometric measurements of V2615 Oph


Byte-by-byte Description of file: table1.dat

   Bytes Format Units   Label     Explanations

   1- 12  F12.4 d       HJD       Heliocentric Julian date
  14- 19  F6.3  mag     Vmag      Johnson V magnitude
  22- 26  F5.3  mag     B-V       ? Johnson B-V colour index
  29- 33  F5.3  mag     V-Rc      ? Johnson-Cousins V-Rc colour index
  36- 40  F5.3  mag     Rc-Ic     ? Cousins R-I colour index
  43- 47  F5.3  mag     V-Ic      ? Johnson-Cousins V-Ic colour index
      50  A1    ---     Obs       [abc] Observations telescope and site (1)

Note (1): Observation telescope and site as follows:
      a = Sonoita Research Observatory (SRO) 0.35-m Celestron C14 telescope
      b = 0.30-m Meade RCX-400 f/8 Schmidt-Cassegrain telescope,
          Associazione Astrofili Valle di Cembra (Trento, Italy)
      c = 0.50-m f/8 Ritchey-Cretien telescope,
          Mt. Zugna by Museo Civico di Rovereto (Trento, Italy)


History:
    From electronic version of the journal
(End)                                      Patricia Vannier [CDS]    29-Jun-2009