The ACS Nearby Galaxy Survey Treasury III: Cepheids in the Outer Disk of M81

Details The ACS Nearby Galaxy Survey Treasury III: Cepheids in the Outer Disk of M81 The ACS Nearby Galaxy Survey Treasury III: Cepheids in the Outer Disk of M81

2009-03-24

arxiv.org/abs/0903.4191v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

10 pages, 9 figures. Accepted for publication in AJ Fixed typos

Scientific paper

10.1088/0004-6256/137/6/4707

The ACS Nearby Galaxy Survey Treasury (ANGST) has acquired deep ACS imaging of a field in the outer disk of the large spiral galaxy M81. These data were obtained over a total of 20 HST orbits, providing a baseline long enough to reliably identify Cepheid variable stars in the field. Fundamental mode and first overtone types have been distinguished through comparative fits with corresponding Cepheid light curve templates derived from principal component analysis of confirmed Cepheids in the LMC, SMC, and Milky Way. A distance modulus of 27.78 pm 0.05_random pm 0.14_systematic with a corresponding distance of 3.60 pm 0.23 Mpc has been calculated from a sample of 11 fundamental mode and 2 first overtone Cepheids (assuming an LMC distance modulus of mu_LMC=18.41 pm 0.10_r pm 0.13_s).

Affiliated with

Also associated with

No associations

Rating

The ACS Nearby Galaxy Survey Treasury III: Cepheids in the Outer Disk of M81 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The ACS Nearby Galaxy Survey Treasury III: Cepheids in the Outer Disk of M81, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The ACS Nearby Galaxy Survey Treasury III: Cepheids in the Outer Disk of M81 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-67586