Results 1 to 10 of about 1,680 (177)
INSIGHTS INTO THE CEPHEID DISTANCE SCALE [PDF]
Astrophysical Journal, 2010 We present an investigation of Cepheid distances using theory and observations. Cepheid models indicate that the slope of the Period-Luminosity (P-L) relation covering the entire period range (0.40<= logP <=2.0) becomes steeper when moving from optical to NIR bands, and that the metallicity dependence of the slope decreases from the B- to the K ...
Ilaria Musella +2 more
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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 +4 more sources
The Effect of Metallicity on Cepheid Magnitudes and the Distance to M33 [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 We present the results from a multi-epoch survey of two regions of M33 using the 3.5-m Wisconsin-Indiana-Yale-NOAO (WIYN) telescope. The inner field is located close to the centre of the galaxy, with the outer region situated about 5.1 kpc away in the southern spiral arm, allowing us to sample a large metallicity range. We have data for 167 fundamental
Peter Wood, Mould Jeremy
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The Cepheid Distance to the Seyfert 1 Galaxy NGC 4151 [PDF]
Astrophysical Journal, 2020 Abstract We derive a distance of 15.8 ± 0.4 Mpc to the archetypal Seyfert 1 galaxy NGC 4151 based on the near-infrared Cepheid period–luminosity relation and new Hubble Space Telescope multiband imaging. This distance determination, based on measurements of 35 long-period (P > 25 days) Cepheids, will support the absolute calibration ...
Bradley Peterson +2 more
exaly +7 more sources
A Revised Cepheid Distance to NGC 4258 and a Test of the Distance Scale
Astrophysical Journal, 2001 26 pages in emulateapj5 format, including 6 figures and 5 tables.
Wendy Freedman
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Rebuilding the Cepheid Distance Scale. I. A Global Analysis of Cepheid Mean Magnitudes
Astrophysical Journal, 1997 54 pages, 7 figures, 4 tables, submitted to ...
exaly +3 more sources
The Cepheid-Based Distance Scale
Open Astronomy, 1999 Di Benedetto G. P., Lattanzi M. G.
doaj +2 more sources
Cepheid Radii and Distances [PDF]
International Astronomical Union Colloquium, 1995 Laney & Stobie (1995) (LS95) have determined Baade-Wesselink radii for 49 galactic Cepheids using BVRI and JHK photometry. Four of the possible magnitude-colour combinations were studied in detail — namely, (V,B–V), (V,V–Ic), (K,V–K) and (K,J–K). In that paper and in the present note we have used the maximum likelihood method of Balona (1977) as ...
C. D. Laney, R. S. Stobie
openaire +1 more source
The Astrophysical Journal Letters, 2023 Milky Way Cepheid variables with accurate Hubble Space Telescope photometry have been established as standards for primary calibration of the cosmic distance ladder to achieve a percent-level determination of the Hubble constant ( H _0 ).
Anupam Bhardwaj +12 more
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Metallicity effects on the Cepheid distance scale [PDF]
Symposium - International Astronomical Union, 1991 We are undertaking empirical tests for the effects of metallicity on the zero-point of the Period-Luminosity relations for Cepheids in M31 and in the Small Magellanic Cloud (SMC), as compared to the Large Magellanic Cloud (LMC). For M31 we have used BVRI data on comparable sets of Cepheids in three radially separated, and chemically different, fields ...
Wendy L. Freedman, Barry F. Madore
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