Results 21 to 30 of about 10,963 (195)
THE EXTRAGALACTIC DISTANCE SCALE WITHOUT CEPHEIDS. IV. [PDF]
The Astrophysical Journal, 2011 ApJ in press ...
Hislop, Lachlan +9 more
openaire +3 more sources
Cepheid Variables in the Maser-Host Galaxy NGC 4258 [PDF]
, 2015 We present results of a ground-based survey for Cepheid variables in NGC 4258. This galaxy plays a key role in the Extragalactic Distance Scale due to its very precise and accurate distance determination via VLBI observations of water masers.
Hoffmann, Samantha L., Macri, Lucas M.
core +3 more sources
CEPHEIDS AS DISTANCE INDICATORS: SOME CURRENT PROBLEMS
Odessa Astronomical Publications, 2017 A general review is given of the calibration of the Cepheid distance scale, with particular reference to its use in the determination of H0. Emphasis is placed on the advantage of using a galactic calibration of the Cepheid scale, rather than relying on ...
M. Feast
doaj +1 more source
Distances and Radii of Classical Cepheids [PDF]
International Astronomical Union Colloquium, 1985 We have used new BVRI photometry and radial velocities of a selection of bright classical Cepheids to determine their distances and radii through the surface brightness method. The improved photometry permitted, through the visual surface brightness relation, high-quality angular-diameter values for each Cepheid throughout its pulsation.
T. G. Barnes, T. J. Moffett
openaire +1 more source
The Astrophysical Journal, 2023 We present Young Supernova Experiment grizy photometry of SN 2021hpr, the third Type Ia supernova sibling to explode in the Cepheid calibrator galaxy, NGC 3147.
Sam M. Ward +25 more
doaj +1 more source
The Cepheid distance to the maser-host galaxy NGC 4258: Studying systematics with the Large Binocular Telescope [PDF]
, 2015 We identify and phase a sample of 81 Cepheids in the maser-host galaxy NGC 4258 using the Large Binocular Telescope (LBT), and obtain calibrated mean magnitudes in up to 4 filters for a subset of 43 Cepheids using archival HST data. We employ 3 models to
Fausnaugh, M. M. +5 more
core +3 more sources
A 1.3% Distance to M33 from Hubble Space Telescope Cepheid Photometry
The Astrophysical Journal, 2023 We present a low-dispersion period–luminosity relation (PL) based on 154 Cepheids in Messier 33 (M33) with Hubble Space Telescope (HST) photometry from the PHATTER survey.
Louise Breuval +9 more
doaj +1 more source
A comprehensive study of Cepheid variables in the Andromeda galaxy. Period distribution, blending and distance determination [PDF]
, 2007 Extragalactic Cepheids are the basic rungs of the cosmic distance scale. They are excellent standard candles, although their luminosities and corresponding distance estimates can be affected by the particular properties of the host galaxy. Therefore, the
Alcock +43 more
core +1 more source
The Cepheid Distance Scale: recent progress in fundamental techniques [PDF]
, 2009 This review examines progress on the Pop I, fundamental-mode Cepheid distance scale with emphasis on recent developments in geometric and quasi-geometric techniques for Cepheid distance determination. Specifically I examine the surface brightness method,
Joyce Ann Guzik +2 more
core +3 more sources
Odessa Astronomical Publications, 2019 We present the results of a spectro- scopic and photometric investigation of 20 objects from the open cluster Collinder 394, which contains the Cepheid BB Sgr.
I. A. Usenko +6 more
doaj +1 more source