Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2010-10-19
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
58 pages, 19 figures. Accepted for publication in the Astronomical Journal
Scientific paper
In providing an independent measure of the expansion history of the Universe, the Carnegie Supernova Project (CSP) has observed 71 high-z Type Ia supernovae (SNe Ia) in the near-infrared bands Y and J. These can be used to construct rest-frame i-band light curves which, when compared to a low-z sample, yield distance moduli that are less sensitive to extinction and/or decline-rate corrections than in the optical. However, working with NIR observed and i-band rest frame photometry presents unique challenges and has necessitated the development of a new set of observational tools in order to reduce and analyze both the low-z and high-z CSP sample. We present in this paper the methods used to generate uBVgriYJH light-curve templates based on a sample of 24 high-quality low-z CSP SNe. We also present two methods for determining the distances to the hosts of SN Ia events. A larger sample of 30 low-z SNe Ia in the Hubble Flow are used to calibrate these methods. We then apply the method and derive distances to seven galaxies that are so nearby that their motions are not dominated by the Hubble flow.
Boldt Luis
Burns Christopher R.
Campillay Abdo
Contreras Carlos
Folatelli Gaston
No associations
LandOfFree
The Carnegie Supernova Project: Light Curve Fitting with SNooPy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Carnegie Supernova Project: Light Curve Fitting with SNooPy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Carnegie Supernova Project: Light Curve Fitting with SNooPy will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-716719