Two New Nova Shells associated with V4362 Sagittarii and DO Aquilae

Abstract

A classical nova is an eruption on the surface of a white dwarf in an accreting binary system. The material ejected from the white dwarf surface generally forms an axisymmetric shell. The shaping mechanisms of nova shells are probes of the processes that take place at energy scales between planetary nebulae and supernova remnants. We report on the discovery of nova shells surrounding the post-nova systems V4362 Sagittarii (1994) and more limited observations of DO Aquilae (1925). Distance measurements of 0.5p/m1.4 kpc for V4362 Sgr and 6.7 p/m 3.5 kpc -0.2 for DO Aql are found based on the expansion parallax method. The growth rates are measured to be 0.07``/year for DO Aql and 0.32``/year for V4362 Sgr. A preliminary investigation into the ionisation structure of the nova shell associated with V4362 Sgr is presented. The observed ionisation structure of nova shells depends strongly on their morphology and the orientation of the central component towards the observer. X-ray, IR and UV observations as well as optical integral field unit spectroscopy are required to better understand these interesting objects.

arXiv comment18 pages, 14 Figures, 9 Tables, accepted MNRAS

References in corpus (69)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Gaia Data Release 2. Summary of the contents and survey properties
• The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• Gaia Data Release 2: The astrometric solution
• Estimating distances from parallaxes IV: Distances to 1.33 billion stars in Gaia Data Release 2
• Astrophysics Source Code Library
• Milky Way Cepheid Standards for Measuring Cosmic Distances and Application to Gaia DR2: Implications for the Hubble Constant
• Evidence for a systematic offset of -80 micro-arcseconds in the Gaia DR2 parallaxes
• Mocassin: A fully three-dimensional Monte Carlo photoionization code
• Catalog of 93 Nova Light Curves: Classification and Properties
• Optical Imaging of Nova Shells and the Maximum Magnitude-Rate of Decline Relationship
• Shape: A 3D Modeling Tool for Astrophysics
• Confirmation of the $Gaia$ DR2 parallax zero-point offset using asteroseismology and spectroscopy in the $Kepler$ field
• Simultaneous calibration of spectro-photometric distances and the Gaia DR2 parallax zero-point offset with deep learning
• RR Lyrae stars as standard candles in the Gaia Data Release 2 Era
• Filamentary Fragmentation and Accretion in High-Mass Star-Forming Molecular Clouds
• The Distances to Novae As Seen By Gaia
• A Nova Outburst Powered by Shocks
• The Cepheid period -- luminosity -- metallicity relation based on Gaia DR2 data
• The double-degenerate, super-Chandrasekhar nucleus of the planetary nebula Henize 2-428
• A planetary nebula around nova V458 Vul undergoing flash ionization
• Hubble Space Telescope imaging and ground-based spectroscopy of old nova shells - I. FH Ser, V533 Her, BT Mon, DK Lac, V476 Cyg
• The Expanding Nebular Remnant of the Recurrent Nova RS Ophiuchi (2006): II. Modeling of Combined Hubble Space Telescope Imaging and Ground-based Spectroscopy
• Deep optical imaging of nova remnants II. A southern-sky sample
• AT Cnc: A Second Dwarf Nova with a Classical Nova Shell
• Testing asteroseismology with Gaia DR2: Hierarchical models of the Red Clump
• Radiative shocks create environments for dust formation in novae
• Optical Morphology, Inclination and Expansion Velocity of the Ejected Shell of Nova Monocerotis 2012
• Properties, evolution and morpho-kinematical modelling of the very fast nova V2672 Oph (Nova Oph 2009), a clone of U Sco
• Comparison of Gaia DR2 Parallaxes of Stars with VLBI Astrometry
• Testing systematics of Gaia DR2 parallaxes with empirical surface brightness -- color relations applied to eclipsing binaries
• The 2011 outburst of the recurrent novaT Pyx. Evidence for a face-on bipolar ejection
• The stellar mass ratio of GK Persei
• A Recurrent Nova Super-Remnant in the Andromeda Galaxy
• The expanding dusty bipolar nebula around the nova V1280 Sco
• The Morphology of the Expanding Ejecta of V2491 Cygni (2008 N.2)
• New Elemental Abundances for V1974 Cygni
• V1369 Cen high resolution panchromatic late nebular spectra in the context of a unified picture for nova ejecta
• The post-common-envelope, binary central star of the planetary nebula Hen 2-11
• Morpho-Kinematical Modelling of Nova Eridani 2009 (KT Eri)
• The Temporal Development of Dust Formation and Destruction in Nova Sagittarii 2015#2 (V5668 Sgr): A Panchromatic Study
• The Inter-Eruption Timescale of Classical Novae from Expansion of the Z Camelopardalis Shell
• The morphology and kinematics of the Fine Ring Nebula, planetary nebula Sp 1, and the shaping influence of its binary central star
• Star Clusters in M 31. IV. A Comparative Analysis of Absorption Line Indices in Old M 31 and Milky Way Clusters
• Planetary Nebulae distances in GAIA DR2
• A three-dimensional view of the remnant of Nova Persei 1901 (GK Per)
• Modelling the structure and kinematics of the Firework nebula: The nature of the GK Persei nova shell and its jet-like feature
• HR Del remnant anatomy using 2-D spectral data and 3-D photoionization shell models
• A unified model for the spectrophotometric development of classical and recurrent novae: the role of asphericity of the ejecta
• New Planetary Nebulae in the Galactic Bulge region with l>0deg - II
• A study of the kinematics and binary-induced shaping of the planetary nebula HaTr 4
• Biases in Expansion Distances of Novae Arising from the Prolate Geometry of Nova Shells
• Angular Expansion of Nova Shells
• Spatio-kinematic modelling of Abell 65, a double-shelled planetary nebula with a binary central star
• Evidence for ablated flows in the shell of nova DQ Her
• On the absence of nova shells
• Polarimetry and Spectroscopy of the `Oxygen Flaring' DQ Herculis-like nova: V5668 Sagittarii (2015)
• The structure of a recent nova shell as observed by ALMA
• Spectroscopic and geometrical evolution of the ejecta of the classical nova ASASSN-18fv
• Dynamical Fragmentation of the T Pyxidis Nova Shell During Recurrent Eruptions
• Distance mapping applied to four well-known planetary nebulae and a nova shell
• A WISE view of novae. I. The data
• The Evolution of Nova Remnants
• Confronting expansion distances of planetary nebulae with Gaia DR2 measurements
• The Gaia Data Release 1 parallaxes and the distance scale of Galactic planetary nebulae
• On the Raman O VI and related lines in classical novae
• Introducing PyCross: PyCloudy Rendering Of Shape Software for pseudo 3D ionisation modelling of nebulae
• Spectro-interferometric observations of classical nova V458 Vul 2007

Cited by in corpus (10)

• A systematic reclassification of type IIn supernovae
• Study of the fastest classical nova, V1674 Her: Photoionization and Morpho-kinemetic model analysis
• Automated SpectroPhotometric Image REDuction (ASPIRED)
• On the Observability of Recurrent Nova Super-Remnants
• QU Vul: An Integral Field Spectroscopy Case Study of a Nova Shell
• Confirmation of the planetary nebula nature of HaTr 5. Not the remnant of Nova Sco 1437
• Introducing PyCross: PyCloudy Rendering Of Shape Software for pseudo 3D ionisation modelling of nebulae
• The peculiar ejecta of the nova V1425 Aquilae
• Shock shaping? Nebular Spectroscopy of Nova V906 Carinae
• Discovery of an optical cocoon tail behind the runaway HD 185806