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The Future of the Hubble Space Telescope
Steven BeckwithApril 25, 2005
Space Telescope Science Institute
April 25, 2005 2
Hubble’s Future Science PotentialHubble’s high impact results from unique capabilities that
address the most compelling science questions of our time. If Hubble is serviced, it will gain new capabilities to keep its rate
of science as high as in the past decade.
Four illustrative topics for HST unique science:• Extra-solar planetary systems (STIS, NICMOS, COS)
– Discovery of new planets
– Study of atmospheres: constituents of life
• Cosmological acceleration of the universe (WFC3)– Distant supernovae and dark energy
• The edge of the visible universe (WFC3)– The first stars and galaxies after the Big Bang
• Mass of the universe (COS)– Mapping ordinary and dark matter
April 25, 2005 3
Planetary transit contrast
1%
1%
These eclipse observations are plotted to the same scale. Hubble spectroscopy requires a contrast S/N~104.
HubbleSpitzer
April 25, 2005 4
Detecting Planets in the Galactic Bulge
This is one-half an ACS field
Sahu, Gilliland et al.
April 25, 2005 5
Supernova 1997cj
Ground Hubble
HST and Distant Supernovae
Hubble is uniquely capable of discovering supernovae at redshifts greater than 1 and measuring their brightness
High Redshift SN and Cosmological Parameters F
aint
er
Brighter
1.0
0.5
0.0
-0.5
-1.0
Fai
ntne
ss r
elat
ive
to H
ubbl
e flo
w (m
)
0.0 0.5 1.0 1.5 2.0
Redshift z
Empty universe
Matter only (M=1)
Concordance theory=0.73 M=0.27
Gray dust absorption
Hubble only (infrared)
NewHubble
observations
UDF, size of distant galaxies
1”
Distant galaxies are smaller than 1 second of arc
April 25, 2005 8
Observation speed to reach S/N=10 at spectral resolution =20,000 at 1600 Å
Rel
a ti v
e sp
eed
of o
bser
vati o
n
104
103
102
10
0 20 40 60 80 100
Texp (orbits)
STIS
COS
Dis
cove
ry p
oten
tial
OB stars in the Magellanic Clouds
Brightest QSO (3C 273)
QSO (z ~ 0.5)
Starburst galaxies
QSO (Reionization)
Incr
eas i
n g #
of
ob j
e cts
Sensitivity at 100 relative toF = 10-14 erg cm-2 s-1 Å-1
Unexplored discovery space
COS Discovery Potential
April 25, 2005 9
Griffin on Hubble
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April 25, 2005 10
Griffin on Hubble Servicing
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April 25, 2005 11
Griffin on HST at Press Conference
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April 25, 2005 12
Senator Inouye on Hubble
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