The Extragalactic Distance Scale Key Project. XVIII. The Discovery of Cepheids and a New Distance to NGC 4535 Using theHubble Space Telescope

1999 ◽  
Vol 521 (1) ◽  
pp. 155-178 ◽  
Author(s):  
L. M. Macri ◽  
J. P. Huchra ◽  
P. B. Stetson ◽  
N. A. Silbermann ◽  
W. L. Freedman ◽  
...  
Keyword(s):  
Distance Scale ◽  
Space Telescope ◽  
Extragalactic Distance Scale

The Hubble Space Telescope extragalactic distance scale key project. 2: Photometry of WFC images of M81

1994 ◽  
Vol 428 ◽  
pp. 143 ◽  
Author(s):  
Shaun M. G. Hughes ◽  
Peter B. Stetson ◽  
Anne Turner ◽  
Robert C., Jr. Kennicutt ◽  
Robert Hill ◽  
...  
Keyword(s):  
Hubble Space Telescope ◽  
Distance Scale ◽  
Space Telescope ◽  
Extragalactic Distance Scale

The Extragalactic Distance Scale Key Project. III. The Discovery of Cepheids and a New Distance to M101 Using the Hubble Space Telescope

1996 ◽  
Vol 463 ◽  
pp. 26 ◽  
Author(s):  
Daniel D. Kelson ◽  
Garth D. Illingworth ◽  
Wendy F. Freedman ◽  
John A. Graham ◽  
Robert Hill ◽  
...  
Keyword(s):  
Hubble Space Telescope ◽  
Distance Scale ◽  
Space Telescope ◽  
Extragalactic Distance Scale

The Extragalactic Distance Scale Key Project. III. The Discovery of Cepheids and a New Distance to M101 Using theHubble Space Telescope

1997 ◽  
Vol 478 (1) ◽  
pp. 430-430 ◽  
Author(s):  
Daniel D. Kelson ◽  
Garth D. Illingworth ◽  
Wendy F. Freedman ◽  
John A. Graham ◽  
Robert Hill ◽  
...  
Keyword(s):  
Distance Scale ◽  
Space Telescope ◽  
Extragalactic Distance Scale

scholarly journals The Hubble Space Telescope Key Project to Measure the Hubble Constant

1999 ◽  
Vol 183 ◽  
pp. 17-30 ◽  
Author(s):  
Wendy L. Freedman ◽  
Jeremy R. Mould ◽  
Robert C. Kennicutt ◽  
Barry F. Madore
Keyword(s):  
Hubble Space Telescope ◽  
Hubble Constant ◽  
Distance Scale ◽  
General Assembly ◽  
Host Galaxies ◽  
Space Telescope ◽  
Type Ia Supernova ◽  
Type Ia ◽  
Extragalactic Distance Scale

A Joint Discussion on the extragalactic distance scale and the Hubble constant took place fifteen years ago, at the 1982 XVIIIth General Assembly of the IAU, held in Patras, Greece. At that time, the newest applications of infrared photometers to Tully-Fisher measurements (Aaronson 1983) and Cepheid distances (Madore 1983) were reported. CCDs were just coming into use and had not yet been applied to extragalactic distance determinations; all of the extragalactic Cepheid distances were based on photographic Argelander (eye-estimated) photometry (Tammann and Sandage 1983 and references therein). No Cepheid distances to type Ia supernova-host galaxies were available.

scholarly journals The H0 Key Project: Cepheids in NGC925, M101 and M100

1995 ◽  
Vol 155 ◽  
pp. 258-259
Author(s):  
S. M. G. Hughes
Keyword(s):  
Standard Model ◽  
Hubble Space Telescope ◽  
Big Bang ◽  
Distance Scale ◽  
Space Telescope ◽  
The Standard Model ◽  
Age Of The Universe ◽  
Extragalactic Distance Scale ◽  
The Big Bang ◽  
The Universe

AbstractAs part of the Extragalactic Distance Scale Key Project, the Hubble Space Telescope has been used to identify Cepheids in M100, M101 and NGC925, and to measure distances derived from the Cepheid PL relation. For M100, the distance of 17.1 ± 1.8 Mpc has been used to infer a preliminary value for H0 of ~ 80 km/s/Mpc, which brings the age of the Universe derived from the standard model of the Big Bang into conflict with the ages of the oldest stars.

scholarly journals Variable Stars and the Cosmic Distance Scale

1989 ◽  
Vol 111 ◽  
pp. 169-176
Author(s):  
Jeremy Mould
Keyword(s):  
Hubble Space Telescope ◽  
Hubble Constant ◽  
Variable Stars ◽  
Virgo Cluster ◽  
Distance Scale ◽  
Stellar Structure ◽  
Space Telescope ◽  
Pulsating Variable Stars ◽  
Extragalactic Distance Scale ◽  
Detector Technology

For three quarters of a century pulsating variable stars have lain at the foundation of the extragalactic distance scale. The construction of larger telescopes, advances in detector technology, hard work by observers, and our understanding of stellar structure have all contributed to the expansion of the realm of the Cepheids to the distance of M101. Now, with the advent of Hubble Space Telescope (HST), we can look forward to the detection of Cepheids in the Virgo cluster and the removal of much of the remaining uncertainty in the Hubble constant.

The Hubble Space Telescope Key Project on the Extragalactic Distance Scale. VI. The Cepheids in NGC 925

1996 ◽  
Vol 470 ◽  
pp. 1 ◽  
Author(s):  
N. A. Silbermann ◽  
Paul Harding ◽  
Barry F. Madore ◽  
Robert C., Jr. Kennicutt ◽  
Abhijit Saha ◽  
...  
Keyword(s):  
Hubble Space Telescope ◽  
Distance Scale ◽  
Space Telescope ◽  
Extragalactic Distance Scale

scholarly journals MEASURING THE HUBBLE CONSTANT WITH THE HUBBLE SPACE TELESCOPE

2009 ◽  
Vol 5 (H15) ◽  
pp. 1-16 ◽  
Author(s):  
W. L. Freedman ◽  
R. C. Kennicutt ◽  
J. R. Mould
Keyword(s):  
Hubble Space Telescope ◽  
Hubble Constant ◽  
Distance Scale ◽  
Space Telescope ◽  
Peculiar Velocities ◽  
Extragalactic Distance Scale ◽  
Distance Indicators

AbstractTen years ago our team completed the Hubble Space Telescope Key Project on the extragalactic distance scale. Cepheids were detected in some 25 galaxies and used to calibrate four secondary distance indicators that reach out into the expansion field beyond the noise of galaxy peculiar velocities. The result was H0 = 72 ± 8 km s−1 Mpc−1 and put an end to galaxy distances uncertain by a factor of two. This work has been awarded the Gruber Prize in Cosmology for 2009.

The Hubble Space Telescope Extragalactic Distance Scale Key Project. 1: The discovery of Cepheids and a new distance to M81

1994 ◽  
Vol 427 ◽  
pp. 628 ◽  
Author(s):  
Wendy L. Freedman ◽  
Shaun M. Hughes ◽  
Barry F. Madore ◽  
Jeremy R. Mould ◽  
Myung Gyoon Lee ◽  
...  
Keyword(s):  
Hubble Space Telescope ◽  
Distance Scale ◽  
Space Telescope ◽  
Extragalactic Distance Scale

The Extragalactic Distance Scale Key Project. IV. The Discovery of Cepheids and a New Distance to M100 Using the Hubble Space Telescope

1996 ◽  
Vol 464 ◽  
pp. 568 ◽  
Author(s):  
Laura Ferrarese ◽  
Wendy L. Freedman ◽  
Robert J. Hill ◽  
Abhijit Saha ◽  
Barry F. Madore ◽  
...  
Keyword(s):  
Hubble Space Telescope ◽  
Distance Scale ◽  
Space Telescope ◽  
Extragalactic Distance Scale
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