W.M. Keck Observatory

Observing Proposal Coversheet for Semester2007A

Allocating Institution: UC
No. of nights Requested: 4
No. of nights estimated to complete the program
in addition to those requested here:
Is this the first application for this program? N
       Keck Proposal Numbers
       LRIS-ADC 2007A_U095LA

For UC proposals only
PI Position: Faculty

INVESTIGATOR INFORMATION

Principal Investigator: Professor Saul Perlmutter
E-mail: saul@lbl.gov
Office Phone: 510-486-5203
Home Phone (optional):
FAX number: (510) 486-6738
Address: Lawrence Berkeley National Laboratory MS 50R5032 One Cyclotron Rd. Berkeley, CA 94720

OBSERVING TEAM AND LOCATION


Co-Investigator(s): Prof. Gerson Goldhaber, Prof. Mark Strovink, Dr. Greg Aldering, Dr. Rahman Amanullah, Kyle Barbary, Dr. Kyle Dawson, Josh Meyers, David Rubin, Dr. David Schlegel, Dr. Anthony Spadafora, Dr. Mark Sullivan, Dr. Nao Suzuki
E-mail(s): g_goldhaber@lbl.gov, MWStrovink@lbl.gov, GAldering@lbl.gov, rahman@physto.se, kbarbary@berkeley.edu, KDawson@lbl.gov, jmeyers314@berkeley.edu, rubind@berkeley.edu, DJSchlegel@lbl.gov, ALSpadafora@lbl.gov, sullivan@astro.utoronto.ca, NSuzuki@lbl.gov
Observer(s) projected to acquire the data: Prof. Saul Perlmutter, Dr. Rahman Amanullah, Kyle Barbary, Dr. Kyle Dawson, Josh Meyers, David Rubin, Dr. David Schlegel, Dr. Mark Sullivan, Dr. Nao Suzuki
E-mail(s): saul@lbl.gov, rahman@physto.se, kbarbary@berkeley.edu, KDawson@lbl.gov, jmeyers314@berkeley.edu, rubind@berkeley.edu, DJSchlegel@lbl.gov, sullivan@astro.utoronto.ca, NSuzuki@lbl.gov
Observer location: Waimea-HQ
Location Justification: We will have observers at Waimea-HQ for all runs, but will also request remote observing from UCB(LBNL) in eavesdropping mode. Remote observers will participate in the observing and run analysis pipelines.

PROGRAM

Title: Cosmology with SNe Ia: the Second Generation

Summary of program (less than 100 words, for general distribution):
The current Type Ia supernova Hubble diagram and CMB observations argue for a flat universe with some form of dark energy. We propose to continue Keck spectroscopy to obtain the redshifts and types for a large sample of intermediate redshift SNe found by the Supernova Legacy Survey. Results from the survey first year, combined with third-year WMAP, provide the tightest published constraints on (constant) w. The full 5-year data set, when combined with well-measured nearby SNe, will provide the major improvement in the determination of dark energy parameters achievable in the coming years, achieving a ~5% measurement of w.

OBSERVING TIME PREFERENCE AND INSTRUMENT SELECTION

Moon
B
G-DE
D
G-DL
B
G-DE
D
G-DL
B
DATES
1-6 Feb
7-11 Feb
12-20 Feb
21-24 Feb
25 Feb - 8 Mar
9-12 Mar
13-21 Mar
22-25 Mar
26 Mar - 6 Apr
Instrument
LST
@midnight
Nights
08:37
08:59
09:26
09:52
10:23
10:55
11:20
11:46
12:18
LRIS-ADC4
-
-
P
-
-
-
P
-
-
Moon
G-DE
D
G-DL
B
G-DE
D
G-DL
B
G-DE
DATES
7-10 Apr
11-19 Apr
20-23 Apr
24 Apr - 5 May
6-10 May
11-18 May
19-24 May
25 May - 4 Jun
5-9 Jun
Instrument
LST
@midnight
Nights
12:49
13:15
13:40
14:12
14:45
15:11
15:39
16:12
16:44
LRIS-ADC4
-
P
-
-
-
P
-
-
-
Moon
D
G-DL
B
G-DE
D
G-DL
B
DATES
10-17 Jun
18-24 Jun
25 Jun - 4 Jul
5-9 Jul
10-18 Jul
19-24 Jul
25-31 Jul
Instrument
LST
@midnight
Nights
17:09
17:39
18:12
18:42
19:10
19:39
20:05
LRIS-ADC4
-
-
-
-
-
-
-

Target Information

RA range: 10h00m-14h18m with emphasis on the 14h18m 52d field
Dec range: +2d - +52d

Additional Information on Observing Time Preferences and Instrument Needs

Specific Dates required: None
Dates to avoid: None
Details of Special Requests: This program is sychronized with the CFHT-SNLS. We request dark time in 4 consecutive months (Feb-May). Please contact us prior to scheduling.
Instrument Specific Requests:
Slitmask Requests: