The First Data Release from SweetSpot: 74 Supernovae in 36 Nights on WIYN+WHIRC

Abstract

SweetSpot is a three-year National Optical Astronomy Observatory (NOAO) Survey program to observe Type Ia supernovae (SNe Ia) in the smooth Hubble flow with the WIYN High-resolution Infrared Camera (WHIRC) on the WIYN 3.5-m telescope. We here present data from the first half of this survey, covering the 2011B-2013B NOAO semesters, and consisting of 493 calibrated images of 74 SNe Ia observed in the rest-frame near-infrared (NIR) from $0.02<z<0.09$. Because many observed supernovae require host galaxy subtraction from templates taken in later semesters, this release contains only the 186 NIR ($JH{K}_s$) data points for the 33 SNe Ia that do not require host-galaxy subtraction. The sample includes 4 objects with coverage beginning before the epoch of B-band maximum and 27 beginning within 20 days of B-band maximum. We also provide photometric calibration between the WIYN+WHIRC and Two-Micron All Sky Survey (2MASS) systems along with light curves for 786 2MASS stars observed alongside the SNe Ia. This work is the first in a planned series of three SweetSpot Data Releases. Future releases will include the full set of images from all 3 years of the survey, including host-galaxy reference images and updated data processing and host-galaxy reference subtraction. SweetSpot will provide a well-calibrated sample that will help improve our ability to standardize distance measurements to SNe Ia, examine the intrinsic optical-NIR colors of SNe Ia at different epochs, explore nature of dust in other galaxies, and act as a stepping stone for more distant, potentially space-based surveys.

arXiv commentPublished in AJ. 10 tables. 11 figures. Lightcurve plots included as a figureset and available in source tarball. Data online at http://www.phyast.pitt.edu/~wmwv/SweetSpot/DR1_data/

References in corpus (38)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Astropy: A Community Python Package for Astronomy
• The NumPy array: a structure for efficient numerical computation
• The Complete Light-curve Sample of Spectroscopically Confirmed Type Ia Supernovae from Pan-STARRS1 and Cosmological Constraints from The Combined Pantheon Sample
• The Supernova Legacy Survey: Measurement of Omega_M, Omega_Lambda and w from the First Year Data Set
• Improved cosmological constraints from a joint analysis of the SDSS-II and SNLS supernova samples
• New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy
• The Ninth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-III Baryon Oscillation Spectroscopic Survey
• Observational Constraints on the Nature of the Dark Energy: First Cosmological Results from the ESSENCE Supernova Survey
• Improved Dark Energy Constraints from ~100 New CfA Supernova Type Ia Light Curves
• Supernova Constraints and Systematic Uncertainties from the First 3 Years of the Supernova Legacy Survey
• Improved Distances to Type Ia Supernovae with Multicolor Light Curve Shapes: MLCS2k2
• The Pan-STARRS1 Surveys
• First-year Sloan Digital Sky Survey-II (SDSS-II) Supernova Results: Hubble Diagram and Cosmological Parameters
• Supernova 2011fe from an Exploding Carbon-Oxygen White Dwarf Star
• K-corrections and spectral templates of Type Ia supernovae
• Cosmological Constraints from Measurements of Type Ia Supernovae discovered during the first 1.5 years of the Pan-STARRS1 Survey
• The Carnegie Supernova Project: Analysis of the First Sample of Low-Redshift Type-Ia Supernovae
• The ESSENCE Supernova Survey: Survey Optimization, Observations, and Supernova Photometry
• Improved Distances to Type Ia Supernovae with Two Spectroscopic Subclasses
• Secondary Maximum in the Near-Infrared Lightcurves of Type Ia Supernovae
• Systematic Uncertainties Associated with the Cosmological Analysis of the First Pan-STARRS1 Type Ia Supernova Sample
• Low R_v from circumstellar dust around supernovae
• Type Ia Supernovae are Good Standard Candles in the Near Infrared: Evidence from PAIRITEL
• Measuring Ejecta Velocity Improves Type Ia Supernova Distances
• Is there Evidence for a Hubble bubble? The Nature of Type Ia Supernova Colors and Dust in External Galaxies
• The reddening law of Type Ia Supernovae: separating intrinsic variability from dust using equivalent widths
• Diversity in extinction laws of Type Ia supernovae measured between $0.2$ and $2\mu \mathrm{m}$
• Color Dispersion and Milky Way Reddening Among Type Ia Supernovae
• Near-infrared observations of type Ia supernovae: The best known standard candle for cosmology
• CfAIR2: Near Infrared Light Curves of 94 Type Ia Supernovae
• Determination of the Hubble constant, the intrinsic scatter of luminosities of Type Ia SNe, and evidence for non-standard dust in other galaxies
• The Type Ia Supernova Color-Magnitude Relation and Host Galaxy Dust: A Simple Hierarchical Bayesian Model
• The Standardizability of Type Ia Supernovae in the Near-Infrared: Evidence for a Peak Luminosity-Decline Rate Relation in the Near-Infrared
• Supernova Discoveries 2010-2011: Statistics and Trends
• Near-infrared light curves of Type Ia supernovae: Studying the properties of the second maximum
• SweetSpot: Near-Infrared Observations of Thirteen Type Ia Supernovae from a New NOAO Survey Probing the Nearby Smooth Hubble Flow

Cited by in corpus (15)

• Measuring the Hubble constant with Type Ia supernovae as near-infrared standard candles
• PISCO: The Pmas/ppak Integral-field Supernova hosts COmpilation
• Carnegie Supernova Project-II: Extending the Near-Infrared Hubble Diagram for Type Ia Supernovae to $z\sim 0.1$
• Cosmological Results from the RAISIN Survey: Using Type Ia Supernovae in the Near Infrared as a Novel Path to Measure the Dark Energy Equation of State
• Testing the Consistency of Dust Laws in SN Ia Host Galaxies: A BayeSN Examination of Foundation DR1
• Near-IR Type Ia SN distances: host galaxy extinction and mass-step corrections revisited
• Type Ia Supernovae are Excellent Standard Candles in the Near-Infrared
• Are Type Ia Supernovae in Restframe $H$ Brighter in More Massive Galaxies?
• Type Ia supernova Hubble diagram with near-infrared and optical observations
• Constraining the SN Ia Host Galaxy Dust Law Distribution and Mass Step: Hierarchical BayeSN Analysis of Optical and Near-Infrared Light Curves
• Significant Luminosity Differences of Two Twin Type Ia Supernovae
• Spectroscopic Studies of Type Ia Supernovae Using LSTM Neural Networks
• A BayeSN Distance Ladder: $H_0$ from a consistent modelling of Type Ia supernovae from the optical to the near infrared
• The DEHVILS Survey Overview and Initial Data Release: High-Quality Near-Infrared Type Ia Supernova Light Curves at Low Redshift
• The DEHVILS in the Details: Type Ia Supernova Hubble Residual Comparisons and Mass Step Analysis in the Near-Infrared