[astro-ph/0401513] The Nearby Supernova Factory

Authors:  W. M. Wood-Vasey, G. Aldering, B. C. Lee, S. Loken, P. Nugent, S. Perlmutter, J. Siegrist, L. Wang, P. Antilogus, P. Astier, D. Hardin, R. Pain, Y. Copin, G. SMadja, E. Gangler, A. Castera, G. Adam, R. Bacon, J-P. Lemonnier, A. Pecontal
Abstract:  The Nearby Supernova Factory (SNfactory) is an ambitious project to find and study in detail approximately 300 nearby Type Ia supernovae (SNe~Ia) at redshifts 0.03<z<0.08. This program will provide an exceptional data set of well-studied SNe in the nearby smooth Hubble flow that can be used as calibration for the current and future programs designed to use SNe to measure the cosmological parameters. The first key ingredient for this program is a reliable supply of Hubble-flow SNe systematically discovered in unprecedented numbers using the same techniques as those used in distant SNe searches. In 2002, 35 SNe were found using our test-bed pipeline for automated SN search and discovery. The pipeline uses images from the asteroid search conducted by the Near Earth Asteroid Tracking group at JPL. Improvements in our subtraction techniques and analysis have allowed us to increase our effective SN discovery rate to ~12 SNe/month in 2003.
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Sarah Bridle
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[astro-ph/0401513] The Nearby Supernova Factory

Post by Sarah Bridle » September 24 2004

Describes how SNFactory will measure ~300 type Ia supernovae in the range 0.03 <z <0.08 over the next 3 years.

Would like to know about other similar projects, esp how many supernovae will be measured in this low redshift range before JDEM/SNAP.

For example, where can I find more info on the KAIT/LOTOSS line in Figure 2? I had a look at the KAIT website http://astron.berkeley.edu/~bait/kait_lwd.html but couldn't see this info. Is this an ongoing survey or a past one?

I see the Carnegie Supernova Program http://csp1.lco.cl/~cspuser1/CSP.html should measure in detail >100 type 1a supernovae over the next 5 years. Would be interested in an update on this.

Are there any other similar projects?

Are there any plans to follow up on the ~6000 local supernovae that should be found by GAIA eg. [arxiv]astro-ph/0210570[/arxiv]?

Jon Thaler
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astro-ph/0401513 The Nearby Supernova Factory

Post by Jon Thaler » September 25 2004

The proposed Dark Energy Survey (DES), a Blanco upgrade, will observe ~1900 SN Ia out to z ~ 0.8, starting in 2009.
See: http://decam.fnal.gov/
and: http://cosmology.astro.uiuc.edu/~jmohr/DES/

Sarah Bridle
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How many DES SN at low z?

Post by Sarah Bridle » November 08 2004

Hi Jon, thanks very much indeed for that.
Does anyone know how many SN that will give at low z? ie. 0.03<~z<~0.08?

bob nichol
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[astro-ph/0401513] The Nearby Supernova Factory

Post by bob nichol » January 18 2005

The SDSS is starting a new SNe project to target SNe in the range 0.05<z<0.35. The predictions estimate ~300 good SNe light curves will be measured and it will run for the next 3 years. Josh Frieman at FNAL is heading it up, but there is a growing european effort to follow these SNe up; contact me if your interested. There is also an effort to find SNe in the SDSS spectra - approximately 100 at z<0.1 have been found this way already (I believe these are public).

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