2018AJ....155..201W -
Astron. J., 155, 201-201 (2018/May-0)
The first data release from SweetSpot: 74 supernovae in 36 nights on WIYN+WHIRC.
WEYANT A., WOOD-VASEY W.M., JOYCE R., ALLEN L., GARNAVICH P., JHA S.W., KROBOTH J.R., MATHESON T. and PONDER K.A.
Abstract (from CDS):
SweetSpot is a 3 yr 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 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) in the range 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 (JHKs) data points for the 33 SNe Ia that do not require host-galaxy subtraction. The sample includes four 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 yr of the survey, including host-galaxy reference images and updated data processing with 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 the nature of dust in other galaxies, and act as a stepping-stone for more distant, potentially space-based surveys.
Abstract Copyright:
© 2018. The American Astronomical Society. All rights reserved.
Journal keyword(s):
distance scale - infrared: stars - supernovae: general
VizieR on-line data:
<Available at CDS (J/AJ/155/201): table3.dat table4.dat table7.dat table8.dat refs.dat>
Simbad objects:
81
Full paper
View the references in ADS
To bookmark this query, right click on this link: simbad:2018AJ....155..201W and select 'bookmark this link' or equivalent in the popup menu