Wendy Freedman

RR Lyrae variables in M32 and the disk of M31 (2009)

Fiorentino, Giuliana, Monachesi, Antonela, Trager, Scott C., Lauer, Tod R., Saha, Abhijit, Mighell, Kenneth J., ...

We observed two fields near M32 with the Advanced Camera for Surveys/High Resolution Channel (ACS/HRC) on board the Hubble Space Telescope (HST). The main field, F1, is 1.8 arcmin from the center of...

RR Lyrae Variables in Two Fields in the Spheroid of M31 (2009)

Sarajedini, Ata, Mancone, Conor L., Lauer, Tod R., Dressler, Alan, Freedman, Wendy, Trager, S. C., ...

We present Hubble Space Telescope observations taken with the Advanced Camera for Surveys Wide Field Channel of two fields near M32—between 4 and 6 kpc from the center of M31. The data cover a time...

RR Lyrae Variables in Two Fields in the Spheroid of M31 (2009)

Sarajedini, Ata, Mancone, Conor L., Lauer, Tod R., Dressler, Alan, Freedman, Wendy, Trager, S. C., ...

We present Hubble Space Telescope observations taken with the Advanced Camera for Surveys Wide Field Channel of two fields near M32 - between four and six kpc from the center of M31. The data cover a...

"An Era of Precision Astrophysics: Connecting Stars, Galaxies and the Universe," an Astro2010 Science White Paper (2009)

Olling, Rob P., Allen, Ron J., Anderson, Jay, Chaboyer, Brian C., Freedman, Wendy, Guhathakurta, Puragra, ...

Abridged: The golden age of astrophysics is upon us with both grand discoveries (extra-solar planets, dark matter, dark energy) and precision cosmology. Fundamental understanding of the working of...

The Stellar Content of M31's Bulge (2003)

Stephens, Andrew W., Frogel, Jay A., DePoy, D. L., Freedman, Wendy, Gallart, Carme, Jablonka, Pascale, ...

In this paper we analyze the stellar populations present in M31 using nine sets of adjacent HST-NICMOS Camera 1 and 2 fields with galactocentric distances ranging from 2' to 20'. These infrared...

The Hubble Constant from the HST Key Project on the Extragalactic Distance Scale (1999)

Ferrarese, Laura, Gibson, Brad, Kelson, Daniel, Sakai, Shoko, Mould, Jeremy, Freedman, Wendy, ...

The final efforts of the HST Key Project on the Extragalactic Distance Scale are presented. Four distance indicators, the Surface Brightness Fluctuation method, the Fundamental Plane for early-type...

The Star Formation History of the Local Group dwarf galaxy Leo I (1999)

Gallart, Carme, Freedman, Wendy, Aparicio, Antonio, Bertelli, Gianpaolo, Chiosi, Cesare

We present a quantitative analysis of the star formation history (SFH) of the Local Group dSph galaxy Leo I, from the information in its HST [(V-I),I] color-magnitude diagram (CMD). The method we use...