The Hubble Space Telescope Key Project on the Extragalactic Distance Scale.: XI.: The Cepheids in NGC 4414

被引：50

作者：

Turner, A ^{[1
]}

Ferrarese, L

Saha, A

Bresolin, F

Kennicutt, RC

Stetson, PB

Mould, JR

Freedman, WL

Gibson, BK

Graham, JA

Ford, H

Han, MS

Harding, P

Hoessel, JG

Huchra, JP

Hughes, SMG

Illingworth, GD

Kelson, DD

Macri, L

Madore, BF

Phelps, R

Rawson, D

Sakai, S

Silbermann, NA

机构：

[1] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA

[2] CALTECH, Pasadena, CA 91125 USA

[3] Space Telescope Sci Inst, Baltimore, MD 21218 USA

[4] Dominion Astrophys Observ, Victoria, BC V8X 4M6, Canada

[5] Australian Natl Univ, Mt Stromlo & Siding Spring Observ, Inst Adv Studies, Weston, ACT 2611, Australia

[6] Observ Carnegie Inst Washington, Pasadena, CA 91101 USA

[7] Carnegie Inst Washington, Dept Terr Magnetism, Washington, DC 20015 USA

[8] Johns Hopkins Univ, Baltimore, MD 21218 USA

[9] Univ Wisconsin, Madison, WI 53706 USA

[10] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[11] Royal Greenwich Observ, Cambridge CB3 0EZ, England

[12] Univ Calif Santa Cruz, Lick Observ, Santa Cruz, CA 95064 USA

[13] CALTECH, Jet Prop Lab, Ctr Infrared Proc & Anal, Pasadena, CA 91125 USA

来源：

ASTROPHYSICAL JOURNAL | 1998年 / 505卷 / 01期

关键词：

Cepheids; galaxies : distances and redshifts; galaxies : individual (NGC 4414);

D O I：

10.1086/306150

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the discovery of Cepheid variable stars in the galaxy NGC 4414, as part of the Hubble Space Telescope (HST) Key Project on the Extragalactic Distance Scale. Observations were obtained with the HST Wide-Field and Planetary Camera 2 (WFPC2) for 13 epochs at V (F555W) and 4 at I (F814W). Photometry was performed using two independent programs, DoPHOT and DAOPHOT/ALLFRAME. We find 11 Cepheids with high-quality light curves and well-determined periods of 19-70 days. Nine of these Cepheids are used in fitting the period-luminosity relation. Assuming an LMC distance modulus of 18.50 mag and E(B-V) = 0.10 mag, we derive a reddening-corrected distance modulus for NGC 4414 of 31.41 +/- 0.17 (random) +/- 0.16 (systematic) mag, corresponding to a distance of 19.1 +/- 1.5 (random) +/- 1.4 (systematic) Mpc. We derive a mean color excess for NGC 4414 of E(V-I) = 0.02 +/- 0.05 mag. NGC 4414 is a calibrator of the Tully-Fisher and Type Ia supernova secondary distance indicators, and we briefly discuss the implications of the new distance for these methods.

引用

页码：207 / 229

页数：23

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