Beryllium detection in the very fast nova ASASSN-16kt (V407 Lupi)

Abstract

We present high-resolution spectroscopic observations of the fast nova ASASSN-16kt (V407 Lup). A close inspection of spectra obtained at early stages has revealed the presence of low-ionization lines, and among the others we have identified the presence of the ionised ${}^7$Be doublet in a region relatively free from possible contaminants. After studying their intensities, we have inferred that ASASSN-16kt has produced (5.9 - 7.7)$\times 10^{-9}$ M${}_{\odot }$ of ${}^7$Be. The identification of bright Ne lines may suggest that the nova progenitor is a massive (1.2 M${}_{\odot }$) oxygen-neon white dwarf. The high outburst frequency of oxygen-neon novae implies that they likely produce an amount of Be similar, if not larger, to that produced by carbon-oxygen novae, then confirming that classical novae are among the main factories of lithium in the Galaxy.

arXiv comment11 pages, 8 figures, 4 tables. Accepted for publication in MNRAS

References in corpus (30)

• Astropy: A Community Python Package for Astronomy
• The NumPy array: a structure for efficient numerical computation
• The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections
• The Man Behind the Curtain: X-rays Drive the UV through NIR Variability in the 2013 AGN Outburst in NGC 2617
• Las Cumbres Observatory Global Telescope Network
• The All-Sky Automated Survey for Supernovae (ASAS-SN) Light Curve Server v1.0
• Automated data reduction workflows for astronomy
• An Extended Grid of Nova Models: II. The Parameter Space of Nova Outbursts
• Nucleosynthesis in Classical Novae: ONe vs. CO White Dwarfs
• Observation of Anomalous Internal Pair Creation in ${}^8$Be: A Possible Signature of a Light, Neutral Boson
• CERES: A Set of Automated Routines for Echelle Spectra
• Optical Imaging of Nova Shells and the Maximum Magnitude-Rate of Decline Relationship
• Studies of Diffuse Interstellar Bands. V. Pairwise Correlations of Eight Strong DIBs and Neutral Hydrogen, Molecular Hydrogen, and Color Excess
• The Imprint of Nova Nucleosynthesis in Presolar Grains
• Swift X-Ray Observations of Classical Novae. II. The Super Soft Source sample
• Explosive lithium production in the classical nova V339 Del (Nova Delphini 2013)
• Binary orbits as the driver of gamma-ray emission and mass ejection in classical novae
• Discovery of a new photometric sub-class of faint and fast classical novae
• The Evolution of Nova V382 Vel 1999
• The Effects of the pep Nuclear Reaction and Other Improvements in the Nuclear Reaction Rate Library on Simulations of the Classical Nova Outburst
• Early optical spectra of nova V1369 Cen show presence of Lithium
• Transient Heavy Element Absorption Systems in Novae: Episodic Mass Ejection from the Secondary Star
• Highly Enriched 7Be in the ejecta of Nova Sagittarii 2015 No. 2 (V5668 Sgr) and the Galactic Lithium origin
• Hubble Space Telescope imaging and ground-based spectroscopy of old nova shells - I. FH Ser, V533 Her, BT Mon, DK Lac, V476 Cyg
• Deep optical imaging of nova remnants II. A southern-sky sample
• The ${}^7$Be II Resonance Lines in Two Classical Novae V5668 Sgr and V2944 Oph
• The spectroscopic evolution of the recurrent nova T Pyxidis during its 2011 outburst. II.The optically thin phase and the structure of the ejecta in recurrent novae
• The expanding dusty bipolar nebula around the nova V1280 Sco
• The Morphology of the Expanding Ejecta of V2491 Cygni (2008 N.2)
• Spectroscopy of Novae -- A User's Manual

Cited by in corpus (20)

• Carbon-Oxygen Classical Novae are Galactic ${}^7$Li Producers as well as Potential Supernova Ia Progenitors
• Observations of Galactic and Extragalactic Novae
• Deciphering the local Interstellar spectra of secondary nuclei with GALPROP/HelMod framework and a hint for primary lithium in cosmic rays
• ${}^7$Li evolution in the thin and thick disks of the Milky Way
• Lithium and Beryllium in the Gaia-Enceladus Galaxy
• The Gaia-ESO Survey: Galactic evolution of lithium at high metallicity
• Multiwavelength observations of V407 Lupi (ASASSN-16kt) --- a very fast nova erupting in an intermediate polar
• Search for 7Be in the outburst of four recent novae
• Absorption and emission features of ${}^7$Be{\sc II} in the outburst spectra of V838 Her (Nova Her 1991)
• 7Be detection in the 2021 outburst of RS Oph
• An evidence-based assumption that helps to reduce the discrepancy between the observed and predicted ${}^7$Be abundances in novae
• Detection of ${}^7$Be II in the Classical Nova V5669 Sgr (Nova Sagittarii 2015 No.3)
• Detection of ${}^7$Be II in the Small Magellanic Cloud
• Novae: An Important Source of Lithium in the Galaxy
• Evolution of lithium in the disc of the Galaxy and the role of novae
• Unevolved Li-rich stars at low metallicity: a possible formation pathway through novae
• Lithium evolution in the Galactic thin disc from Main-Sequence and early Red-Giant-Branch stars
• Modelling the chemical evolution of the Milky Way
• 7Be in the outburst of the ONe nova V6595 Sgr
• Gaia-Sausage-Enceladus: Lithium evolution from early red-giant-branch and main-sequence stars