Research articles

search articles

My Pages

Stat

Members: 3645
Articles: 2'501'711
Articles rated: 2609

20 April 2024

» arxiv » astro-ph/9802184

Article overview

The Hubble Space Telescope Extragalactic Distance Scale Key Project. X. The Cepheid Distance to NGC 7331
H0 Key Project: Shaun M. G. Hughes ; Mingsheng Han ; John Hoessel ; Wendy L. Freedman ; Robert C. Kennicutt ; Jeremy. R. Mould ; Abi Saha ; Peter B. Stetson ; Barry F. Madore ; Nancy A. Silbermann ; Paul Harding ; Laura Ferrarese ; Holland Ford ; Brad K. Gibson ; John A. Graham ; Robert Hill ; John Huchra ; Garth D. Illingworth ; Randy Phelps ; Shoko Sakai ;
Date:	13 Feb 1998
Subject:	astro-ph
Abstract:	The distance to NGC 7331 has been derived from Cepheid variables observed with HST/WFPC2, as part of the Extragalactic Distance Scale Key Project. Multi-epoch exposures in F555W (V) and F814W (I), with photometry derived independently from DoPHOT and DAOPHOT/ALLFRAME programs, were used to detect a total of 13 reliable Cepheids, with periods between 11 and 42 days. The relative distance moduli between NGC 7331 and the LMC, imply an extinction to NGC 7331 of A_V = 0.47+-0.15 mag, and an extinction-corrected distance modulus to NGC 7331 of 30.89+-0.14(random) mag, equivalent to a distance of 15.1 Mpc. There are additional systematic uncertainties in the distance modulus of +-0.12 mag due to the calibration of the Cepheid Period-Luminosity relation, and a systematic offset of +0.05+-0.04 mag if we applied the metallicity correction inferred from the M101 results of Kennicutt et al 1998.
Source:	arXiv, astro-ph/9802184
Services:	Forum \| Review \| PDF \| Favorites

No review found.

Did you like this article?

This article or document is ...
important:
of broad interest:
readable:
new:
correct:
Global appreciation:

Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.

browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

ScienXe.org
» my Online CV
» Free

News, job offers and information for researchers and scientists:

home

contact

sitemap