Metallicity-corrected Tip of the Red Giant Branch Distance to NGC 4258

Details Metallicity-corrected Tip of the Red Giant Branch Distance to NGC 4258 Metallicity-corrected Tip of the Red Giant Branch Distance to NGC 4258

2008-08-15

arxiv.org/abs/0808.2180v3

Astronomy and Astrophysics

Astrophysics

Accepted for publication in ApJ. 14 pages, 9 figures. Re-submitted with distance in Mpc corrected, and minor additions

Scientific paper

10.1086/592563

We have determined the distance to NGC 4258 using observations made with the Hubble Space Telescope (HST) and the Wide Field, Advanced Camera for Surveys (ACS/WFC). We apply a modified technique that fully accounts for metallicity effects on the use of the luminosity of the tip of the red giant branch (TRGB) to determine one of the most precise TRGB distance moduli to date: u(TRGB) = 29.28 +/- 0.04 (random) +/- 0.12 (systematic) mag (7.18 +/- 0.13 +/- 0.40 Mpc). We discuss this distance modulus with respect to other recent applications of the TRGB method to NGC 4258, and with several other techniques (Cepheids and masers) that are equally competitive in their precision, but different in their systematics.

Affiliated with

Also associated with

No associations

Rating

Metallicity-corrected Tip of the Red Giant Branch Distance to NGC 4258 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 Metallicity-corrected Tip of the Red Giant Branch Distance to NGC 4258, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metallicity-corrected Tip of the Red Giant Branch Distance to NGC 4258 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-651647