SN 2017cfd: A Normal Type Ia Supernova Discovered Very Young

Abstract

The Type~Ia supernova (SN~Ia) 2017cfd in IC~0511 (redshift z = 0.01209+- 0.00016$) was discovered by the Lick Observatory Supernova Search 1.6+-0.7 d after the fitted first-light time (FFLT; 15.2 d before B-band maximum brightness). Photometric and spectroscopic follow-up observations show that SN~2017cfd is a typical, normal SN~Ia with a peak luminosity MB ~ -19.2+-0.2 mag, Delta m15(B) = 1.16 mag, and reached a B-band maximum ~16.8 d after the FFLT. We estimate there to be moderately strong host-galaxy extinction (A_V = 0.39 +- 0.03 mag) based on MLCS2k2 fitting. The spectrum reveals a Si~II lambda 6355 velocity of ~11,200 kms at peak brightness. The analysis shows that SN~2017cfd is a very typical, normal SN Ia in nearly every aspect. SN~2017cfd was discovered very young, with multiband data taken starting 2 d after the FFLT, making it a valuable complement to the currently small sample (fewer than a dozen) of SNe~Ia with color data at such early times. We find that its intrinsic early-time (B - V)0 color evolution belongs to the "blue" population rather than to the distinct "red" population. Using the photometry, we constrain the companion star radius to be < 2.5 R_sun, thus ruling out a red-giant companion.

arXiv comment10 pages, 7 figures, 3 tables

References in corpus (70)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM
• Las Cumbres Observatory Global Telescope Network
• Type Ia Supernova Explosion Models
• The Pan-STARRS1 Photometric System
• Improved Dark Energy Constraints from ~100 New CfA Supernova Type Ia Light Curves
• SALT2: using distant supernovae to improve the use of Type Ia supernovae as distance indicators
• Improved Distances to Type Ia Supernovae with Multicolor Light Curve Shapes: MLCS2k2
• New Parallaxes of Galactic Cepheids from Spatially Scanning the Hubble Space Telescope: Implications for the Hubble Constant
• Determining the Type, Redshift, and Age of a Supernova Spectrum
• Supernova 2011fe from an Exploding Carbon-Oxygen White Dwarf Star
• The Updated Zwicky Catalog (UZC)
• Normal Type Ia supernovae from violent mergers of white dwarf binaries
• Seeing the Collision of a Supernova with its Companion Star
• Planck intermediate results. XLVI. Reduction of large-scale systematic effects in HFI polarization maps and estimation of the reionization optical depth
• The diversity of Type II supernova versus the similarity in their progenitors
• Berkeley Supernova Ia Program I: Observations, Data Reduction, and Spectroscopic Sample of 582 Low-Redshift Type Ia Supernovae
• A Compact Degenerate Primary-Star Progenitor of SN 2011fe
• SOUSA: the Swift Optical/Ultraviolet Supernova Archive
• Proper image subtraction - optimal transient detection, photometry and hypothesis testing
• Constraining Type Ia supernova models: SN 2011fe as a test case
• Supernova 2002bo: inadequacy of the single parameter description
• Strong Ultraviolet Pulse From a Newborn Type Ia Supernova
• What Can We Learn from the Rising Lightcurves of Radioactively-Powered Supernovae?
• Observational Predictions for Sub-Chandrasekhar Mass Explosions: Further Evidence for Multiple Progenitor Systems for Type Ia Supernovae
• Evidence for Two Distinct Populations of Type Ia Supernovae
• Nearby Supernova Rates from the Lick Observatory Supernova Search. I. The Methods and Database
• The Foundation Supernova Survey: Motivation, Design, Implementation, and First Data Release
• Observational Properties of Thermonuclear Supernovae
• Very Early Ultraviolet and Optical Observations of the Type Ia Supernova 2009ig
• Early Blue Excess from the Type Ia Supernova 2017cbv and Implications for Its Progenitor
• A hybrid type Ia supernova with an early flash triggered by helium-shell detonation
• Low-Resolution Sodium D Absorption is a Bad Proxy for Extinction
• The rise of SN2014J in the nearby galaxy M82
• A Study of Carbon Features in Type Ia Supernova Spectra
• The Katzman Automatic Imaging Telescope Gamma-Ray Burst Alert System, and Observations of GRB 020813
• Comprehensive Observations of the Bright and Energetic Type Iax SN 2012Z: Interpretation as a Chandrasekhar Mass White Dwarf Explosion
• The single-degenerate channel for the progenitor of type Ia supernovae with different metallicities
• ZTF Early Observations of Type Ia Supernovae I: Properties of the 2018 Sample
• The Very Young Type Ia Supernova 2013dy: Discovery, and Strong Carbon Absorption in Early-Time Spectra
• Berkeley Supernova Ia Program II: Initial Analysis of Spectra Obtained Near Maximum Brightness
• Type Ia Supernova Carbon Footprints
• Constraints on Shallow 56Ni from the Early Lightcurves of Type Ia Supernovae
• The Berkeley Sample of Stripped-Envelope Supernovae
• Estimating the First-Light Time of the Type Ia Supernova 2014J in M82
• Photometric and Spectroscopic Properties of Type Ia Supernova 2018oh with Early Excess Emission from the $Kepler$ 2 Observations
• Unburned Material in the Ejecta of Type Ia Supernovae
• Carbon Detection in Early-Time Optical Spectra of Type Ia Supernovae
• Lick Observatory Supernova Search Follow-Up Program: Photometry Data Release of 93 Type Ia Supernovae
• Photometric Observations of the Type Ia SN 2002er in UGC 10743
• The Very Young Type Ia Supernova 2012cg: Discovery and Early-Time Follow-Up Observations
• The Infrared Light Curve of SN 2011fe in M101 and the Distance to M101
• Surface Radioactivity or Interactions? Multiple Origins of Early-excess Type Ia Supernovae and Associated Subclasses
• Type Ia Supernovae in the First Few Days: Signatures of Helium Detonation versus Interaction
• Red vs Blue: Early observations of thermonuclear supernovae reveal two distinct populations?
• Probing type Ia supernova properties using bolometric light curves from the Carnegie Supernova Project and the CfA Supernova Group
• Testing SNe Ia distance measurement methods with SN 2011fe
• Modelling the early time behaviour of type Ia supernovae: effects of the ${}^{56}$Ni distribution
• Berkeley Supernova Ia Program: Data Release of 637 Spectra from 247 Type Ia Supernovae
• LRS2: the new facility low resolution integral field spectrograph for the Hobby-Eberly Telescope
• Early emission from type Ia supernovae
• Red and Reddened: Ultraviolet through Near-Infrared Observations of Type Ia Supernova 2017erp
• An Empirical Fitting Method to Type Ia Supernova Light Curves. III. A Three-Parameter Relationship: Peak Magnitude, Rise Time, and Photospheric Velocity
• The first 48: Discovery and progenitor constraints on the Type Ia supernova 2013gy
• SN2002es-like Supernovae From Different Viewing Angles
• R-band light-curve properties of Type Ia supernovae from the (intermediate) Palomar Transient Factory
• An Empirical Fitting Method for Type Ia Supernova Light Curves. II. Estimating the First-Light Time and Rise Time
• An Empirical Fitting Method for Type Ia Supernova Light Curves: A Case Study of SN 2011fe

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