2015ApJ...805..136L


C.D.S. - SIMBAD4 rel 1.7 - 2020.04.09CEST20:02:38

2015ApJ...805..136L - Astrophys. J., 805, 136 (2015/June-1)

The distance to nova V959 Mon from VLA imaging.

LINFORD J.D., RIBEIRO V.A.R.M., CHOMIUK L., NELSON T., SOKOLOSKI J.L., RUPEN M.P., MUKAI K., O'BRIEN T.J., MIODUSZEWSKI A.J. and WESTON J.

Abstract (from CDS):

Determining reliable distances to classical novae is a challenging but crucial step in deriving their ejected masses and explosion energetics. Here we combine radio expansion measurements from the Karl G. Jansky Very Large Array with velocities derived from optical spectra to estimate an expansion parallax for nova V959 Mon, the first nova discovered through its γ-ray emission. We spatially resolve the nova at frequencies of 4.5-36.5 GHz in nine different imaging epochs. The first five epochs cover the expansion of the ejecta from 2012 October to 2013 January, while the final four epochs span 2014 February-May. These observations correspond to days 126 through 199 and days 615 through 703 after the first detection of the nova. The images clearly show a non-spherical ejecta geometry. Utilizing ejecta velocities derived from three-dimensional modeling of optical spectroscopy, the radio expansion implies a distance between 0.9±0.2 and 2.2±0.4 kpc, with a most probable distance of 1.4±0.4 kpc. This distance implies a γ-ray luminosity of 0.6 x 1035 erg/s, which is much less than the prototype γ-ray-detected nova, V407 Cyg, possibly due to the lack of a red giant companion in the V959 Mon system. V959 Mon also has a much lower γ-ray luminosity than other classical novae detected in γ-rays to date, indicating a range of at least a factor of 10 in the γ-ray luminosities for these explosions.

Abstract Copyright:

Journal keyword(s): gamma rays: stars - novae, cataclysmic variables - radio continuum: stars - stars: individual: V959 Mon - white dwarfs

Status at CDS:  

Simbad objects: 15

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Number of rows : 15

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 ICRF J054236.1+495107 Sy1 05 42 36.13789843 +49 51 07.2337251   18.45 17.80 17.210   ~ 1247 1
2 4C 10.20 Rad 06 32 15.30 +10 22 02.0           ~ 33 1
3 NOVA Mon 2012 No* 06 39 38.74 +05 53 52.0           ~ 117 0
4 ICRF J064326.4+085738 AGN 06 43 26.44506745 +08 57 38.0105153           ~ 42 1
5 NOVA Pyx 1890 No* 09 04 41.5062068236 -32 22 47.503345173   7.0       ~ 376 1
6 NOVA Cen 2013 No* 13 54 45.3629118204 -59 09 04.170026638   15.5   15.1   ~ 50 0
7 V* RS Oph No* 17 50 13.1592776879 -06 42 28.481553668   12.29 4.30     OB+M2ep 918 0
8 NOVA Sco 2012 No* 17 50 53.9100383498 -32 37 21.088676666           ~ 67 0
9 Fermi J1750-3243 gam 17 50 54 -32 43.2           ~ 3 0
10 V* HM Sge Sy* 19 41 57.0758884476 +16 44 39.856454738   12.38 11.10     M7 433 1
11 NOVA Del 2013 No* 20 23 30.6864752010 +20 46 03.777415270   17.50 16.86     ~ 155 0
12 NOVA Vul 1984 b No* 20 26 45.94 +27 50 42.2           ~ 237 0
13 V* V1974 Cyg No* 20 30 31.61 +52 37 51.3           ~ 534 0
14 EM* AS 453 Sy* 21 02 09.8173494732 +45 46 32.736335364   16.04 14.68 11.38   Mep 233 0
15 V* V407 Cas cC* 23 54 24.5759999716 +62 08 58.092349636   13.34       ~ 23 0

    Equat.    Gal    SGal    Ecl

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2020.04.09-20:02:38

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