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3\06 HST Daily Rpt No 3314
Part 2 of 3

STIS/MA2/ACS/HRC 9501

Life Cycles of Radio Galaxies

Now, for the first time, we can probe the duration of nuclear activity 
and its duty cycle and the relationship between the growth of the 
bulge {via a starburst} and the growth of the BH {via fueling the 
AGN}. We have identified a class of powerful radio galaxy which 
displays both an outer `older' radio source as well as an inner 
`younger' radio source. These `double- doubles' are sources in which 
the current radio source is propagating outwards through the relic of
the previous epoch of activity. In 3C 236 we found that repeated 
episodes of star formation and radio ejection were indeed temporally 
linked. We propose to obtain images of the host galaxies of 4 
additional double-double radio galaxies in the NUV with STIS and the R 
band with ACS/HRC. The proposed HST observations will allow us to 
determine the existence of young star forming regions in these 
double-double sources. Follow up imaging and spectroscopy combined 
with our detailed radio imaging, will allow us to use the 
double-doubles to address critical questions concerning probe the 
relationship between star formation and AGN fueling, e.g., - Over what 
time scales do these processes occur ? -- are they short and intense 
or long and gradual ?

WFPC2 9594

WFPC2 CYCLE 11 SUPPLEMENTAL DARKS pt2/3

This dark calibration program obtains 3 dark frames every day to 
provide data for monitoring and characterizing the evolution of hot 
pixels

STIS 9605

CCD Dark Monitor-Part 1

Monitor the darks for the STIS CCD

STIS 9607

CCD Bias Monitor - Part 1

Monitor the bias in the 1x1, 1x2, 2x1, and 2x2 bin settings at gain=1, 
and 1x1 at gain = 4, to build up high-S/N superbiases and track the 
evolution of hot columns.

STIS 9625

STIS NUV-MAMA Cycle 11 Flats

This program will obtain NUV-MAMA observations of the STIS internal 
Deuterium lamp to construct an NUV flat applicable to all NUV modes

ACS 9657

ACS Internal Flat Field Stability

The flat field stability and characterisation obtained during the 
ground calibration and SMOV phases will be tested and verified through 
a sub-sample of the filter set. Only internal exposures with the 
calibration lamps will be required.

ACS 9673

CCD Daily Monitor

This program consists of basic tests to monitor, the read noise, the 
development of hot pixels and test for any source of noise in ACS CCD 
detectors. This programme will be executed once a day for the entire 
lifetime of ACS

WFPC2 9676

POMS Test Proposal: WFII parallel archive proposal

This is the generic target version of the WFPC2 Archival Pure Parallel 
program.  The program will be used to take parallel images of random 
areas of the sky, following the recommendations of the 2002 Parallels 
Working Group.

NICMOS 9702

NICMOS Parallel Thermal Background

NICMOS Camera 2 pure parallel exposures in the F222M and F237M filters 
to establish the stability of the HST+NCS+Instrument thermal emission. 
This data will be compared against the already available Camera 3 
measurements in F222M which show an increased thermal background.

ACS 9705

M87 Jet

As the nearest galaxy with an optical jet, M87 affords an 
unparallelled opportunity to study extragalactic jet phenomena at the 
highest resolution.  Monitoring of the jet of M87 by Chandra and HST 
has detected massive variability in one knot of M87's jet. During 
March-July 2002, knot HST-1 brightened by a factor of 2 in both X-rays 
and optical. Following those observations, M87 became unobservable, as 
in August-October the Sun approaches to within 5 degrees.  Chandra 
monitoring resumes in November; however, there are no HST observations 
of M87 scheduled until May 2003. We therefore request five HST 
observations during the period November 2002-April 2003, scheduled to 
correspond with the Chandra observations. Based on its track record of 
X-ray variability in the last year, and optical variability and 
superluminal motion {speeds of 6c} since 1994, we expect continued 
variability, with comparable timescales. The proposed observations 
will monitor the optical morphology, spectrum and magnetic field 
configuration of the jet, and allow us to model the mechanisms 
responsible for this variability, the first seen in a spatially 
resolved jet. The results of this investigation are of key importance 
not only for understanding the nature of the X-ray emission of the M87 
and its relationship to the lower energy, radio-optical continuum, but 
also for understanding flares in blazar jets, which are highly 
variable but where we have never before been able to resolve the 
flaring region in the optical or X-rays. Given the SED observed in 
M87, the flare emission is probably synchrotron radiation from a fresh 
particle injection threshold. Not only will these observations allow 
us to check this hypothesis, they will allow us to constrain the 
particle acceleration and loss timescales as well as the jet dynamics 
{which produce and affect the magnetic field configuration} associated 
with this flaring component.

STIS 9706

STIS Pure Parallel Imaging Program: Cycle 10

ACS/CAL 9707

Elevated ACS CCD temperature study

behaviour, measurements will be taken with the TEC set points at 
-71.5C and -66.7C. Bias and dark frames plus CTE images will be 
recorded at the normal operating temperature, -77C, and at the two 
higher settings


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