{
  "id": "1703.02402",
  "version": "v1",
  "published": "2017-03-03T21:18:43.000Z",
  "updated": "2017-03-03T21:18:43.000Z",
  "title": "The First Data Release from SweetSpot: 74 Supernovae in 36 Nights on WIYN+WHIRC",
  "authors": [
    "Anja Weyant",
    "W. M. Wood-Vasey",
    "Richard Joyce",
    "Lori Allen",
    "Peter Garnavich",
    "Saurabh W. Jha",
    "Jessica R. Kroboth",
    "Thomas Matheson",
    "Kara A. Ponder"
  ],
  "comment": "Submitted to ApJS. 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/",
  "categories": [
    "astro-ph.HE",
    "astro-ph.IM",
    "astro-ph.SR"
  ],
  "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 168 NIR ($JHK_s$) data points for the 33 SNe Ia that do not require host-galaxy subtraction. The sample includes 3 objects with coverage beginning before the epoch of B-band maximum and 26 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.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-03-03T21:18:43.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "sne ia",
      "first data",
      "three-year national optical astronomy observatory",
      "b-band maximum",
      "host-galaxy reference"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}