Monthly View
Monthly View
Flat View
Flat View
Weekly View
Weekly View
Daily View
Daily View
Categories
Categories
Search
Search

Event: 'The Nearby Supernova Factory - Improving SNe Ia As Dark Energy Probes'

Seminars
CENTRA Seminars
Date: Thursday, December 10, 2009 At 02:30 PM
Duration: 1 Hour
Contact Info:
Vallery Stansiehv
Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
URL:

Speaker:
Rui Pereira (Institut de Physique Nucléaire de Lyon)
 
Abstract: 
During the 2004-2008 period the Nearby Supernova Factory discovered  ~1000 supernovae, 
and obtained detailed spectrophotometric time  series of ~190 SNe Ia with the SuperNova 
Integral Field  Spectrograph. These supernovae are located in the nearby Hubble flow  (0.03 < z < 0.08),
allowing relative distance measurements with  minimal uncertainties from peculiar velocities and 
bulk flows. Each  supernova was spectrophotometrically observed over a period of ~50  days, with a median 
number of 15 observations per target. The first  spectrum is typically obtained at -4 days, and in some 
instances as  early as -14 days before maximum light. Each spectrum (3200A - 10000A) is photometrically 
calibrated, with simultaneous observations of field stars used to correct for atmospheric  extinction variability.


In this talk I will present the SNfactory project and dataset, as well as recent results impacting the use of
SNe Ia as dark energy  probes, notably a new spectral indicator able to standardize SNe Ia  with a better 
accuracy than light curve width and colour. 
 
Place:
Sala de Vídeo-conferência, Centro de Congressos do IST, Pavilhão de Civil, Piso 01 (-1)

IST, Campus da Alameda
 


Search Calendar


 
April 2021 May 2021 June 2021
Mo Tu We Th Fr Sa Su
Week 17 1 2
Week 18 3 4 5 6 7 8 9
Week 19 10 11 12 13 14 15 16
Week 20 17 18 19 20 21 22 23
Week 21 24 25 26 27 28 29 30
Week 22 31

Upcoming Events

There are no upcoming events currently scheduled.