ASASSN-13dn: A Luminous and Double-Peaked Type II Supernova

Abstract

We present observations of ASASSN-13dn, one of the first supernovae discovered by ASAS-SN, and a new member of the rare group of Luminous Type II Supernovae (LSNe II). It was discovered near maximum light, reaching an absolute magnitude of M${}_v$ $\sim$ -19 mag, placing this object between normal luminosity type II SNe and superluminous SNe A detailed analysis of the photometric and spectroscopic data of ASASSN-13dn is performed. The spectra are characterized by broad lines, in particular the H$\alpha$ lines where we measure expansion velocities ranging between 14000 - 6000 km s${}^{-1}$ over the first 100 days. H$\alpha$ dominates the nebular spectra, and we detect a narrow P-Cygni absorption within the broader emission line with an expansion velocity of 1100 km s${}^{-1}$. Photometrically, its light curve shows a re-brightening of $\sim$ 0.6 mag in the $gri$ bands starting at 25$\pm$2 days after discovery, with a secondary peak at $\sim 73$d, followed by an abrupt and nearly linear decay of 0.09 mag d${}^{-1}$ for the next 35 days. At later times, after a drop of 4 magnitudes from the second maximum, the light curves of ASASSN-13dn shows softer undulations from 125 to 175 days. We compare ASASSN-13dn with other LSNe II in the literature, finding no match to both light curve and spectroscopic properties. We discuss the main powering mechanism and suggest that interaction between the ejecta and a dense CSM produced by eruptions from an LBV-like progenitor could potentially explain the observations.

11 pages, 12 figures. Submitted to A&A

References in corpus (50)

• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• Star Formation in Galaxies Along the Hubble Sequence
• The Eleventh and Twelfth Data Releases of the Sloan Digital Sky Survey: Final Data from SDSS-III
• How Massive Single Stars End their Life
• 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
• Mass Loss: Its Effect on the Evolution and Fate of High-Mass Stars
• Nearby Supernova Rates from the Lick Observatory Supernova Search. II. The Observed Luminosity Functions and Fractions of Supernovae in a Complete Sample
• Supernova Light Curves Powered by Young Magnetars
• The O3N2 and N2 abundance indicators revisited: improved calibrations based on CALIFA and Te-based literature data
• Hydrogen-poor superluminous stellar explosions
• Bright Supernovae from Magnetar Birth
• Characterizing the V-band light-curves of hydrogen-rich type II supernovae
• The Unprecedented 2012 Outburst of SN 2009ip: A Luminous Blue Variable Becomes a True Supernova
• Supernova Light Curves Powered by Fallback Accretion
• Analytical Light Curve Models of Super-Luminous Supernovae: chi^2-Minimizations of Parameter Fits
• Unifying Type II Supernova Light Curves with Dense Circumstellar Material
• The Exceptionally Luminous Type II-L SN 2008es
• Type II supernova spectral diversity I: Observations, sample characterization and spectral line evolution
• Energetic eruptions leading to a peculiar hydrogen-rich explosion of a massive star
• Light curves of hydrogen-poor Superluminous Supernovae from the Palomar Transient Factory
• Uncloaking globular clusters in the inner Galaxy
• The Nickel Mass Distribution of Normal Type II Supernovae
• H-alpha Spectral diversity of type II supernovae
• Modeling the signatures of interaction in Type II supernovae: UV emission, high-velocity features, broad-boxy profiles
• SN 2003bg: The First Type IIb Hypernova
• Type II supernovae from the Carnegie Supernova Project-I. II. Physical parameter distributions from hydrodynamical modelling
• Core-collapse, superluminous, and gamma-ray burst supernova host galaxy populations at low redshift: the importance of dwarf and starbursting galaxies
• The bumpy light curve of supernova iPTF13z
• The Hydrogen-Poor Superluminous Supernovae from the Zwicky Transient Facility Phase-I Survey: I. Light Curves and Measurements
• Superluminous supernovae: an explosive decade
• Luminous Supernovae: Unveiling a Population Between Superluminous and Normal Core-collapse Supernovae
• One thousand days of SN 2015bn: HST imaging shows a light curve flattening consistent with magnetar predictions
• A magnetar model for the hydrogen-rich super-luminous supernova iPTF14hls
• A sequence of Type Ib, IIb, II-L, and II-P supernovae from binary-star progenitors of varying initial separation
• Carnegie Supernova Project-II: Near-infrared Spectroscopic Diversity of Type II Supernovae
• The double-peaked type Ic Supernova 2019cad: another SN 2005bf-like object
• Supernova 2013fc in a circumnuclear ring of a luminous infrared galaxy: the big brother of SN 1998S
• ASASSN-15nx: A luminous Type II supernova with a "perfect" linear decline
• OGLE-2014-SN-073 as a fallback accretion powered supernova
• Broad-emission-line dominated hydrogen-rich luminous supernovae
• Super-luminous Type II supernovae powered by magnetars
• A characterization of ASAS-SN core-collapse supernova environments with VLT+MUSE: I. Sample selection, analysis of local environments, and correlations with light curve properties
• SN 2016gsd: An unusually luminous and linear type II supernova with high velocities
• Supernovae double-peaked light curves from double-nickel distribution
• ASASSN-15no: The Supernova that plays hide-and-seek
• A systematic study of magnetar-powered hydrogen-rich supernovae
• ASASSN-18am/SN 2018gk : An overluminous Type IIb supernova from a massive progenitor
• Luminosity source in supernova ASASSN-15nx with long linear light curve

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