Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Frank Thim"'
Autor:
A. Saha, Frank Thim, Andrew E. Dolphin, John G. Hoessel, Evan D. Skillman, Edward W. Olszewski, John S. Gallagher
Publikováno v:
The Astronomical Journal. 127:875-896
We report the findings of a new search for RR Lyraes in an M31 halo field located 40 arcminutes from the nucleus of the galaxy along the minor axis. We detected 37 variable stars, of which 24 are classified as RR Lyraes and the others are ambiguous.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b698bd83e7d62bbbe3e84b5159b75602
https://doi.org/10.1086/381301
https://doi.org/10.1086/381301
Publikováno v:
Astrophysical Journal, 590(1), 256-270. IOP PUBLISHING LTD
Cepheids have been observed in NGC 5236 (M83) using the Antu (Unit Telescope 1) 8.2 m telescope of the ESO Very Large Telescope with the Focal Reducer/Low Dispersion Spectrograph 1. Repeated imaging observations have been made between 2000 January an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a064cb3721f66a7d8362d8aa7369c46a
https://doi.org/10.1086/374888
https://doi.org/10.1086/374888
Autor:
Frank Thim, J. Christensen, F. D. Macchetto, G. A. Tammann, A. Saha, Lukas Labhardt, Nino Panagia, Allan Sandage
Publikováno v:
The Astrophysical Journal. 551:973-1015
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4f78d8d3a79205be8b29176ef62198c
https://doi.org/10.1086/320223
https://doi.org/10.1086/320223
With this paper we continue the preparation for a forthcoming summary report of our experiment with the Hubble Space Telescope (HST) to determine the Hubble constant using type Ia supernovae as standard candles. Two problems are addressed. (1) We exa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::768b373a57566d92b08d2077329d48a2
Publikováno v:
AIP Conference Proceedings.
The most secure route for the determination of H0 over scales out to ∼30 000 km s−1 is provided by blue SNe Ia. They are nearly perfect standard candles with luminosity scatter of 0m.1 (after small corrections for differences in decline rate and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e3b2f1cb015c4cfce5cacf984fa1bc3
https://doi.org/10.1063/1.1363522
https://doi.org/10.1063/1.1363522
Autor:
Frank Thim
Publikováno v:
International Astronomical Union Colloquium. 176:231-232
A search for Cepheids in NGC 4414 has been performed using HST archive data. Accurate photometry for this galaxy is challenging due to its high surface brightness background with steep gradients and the rather low S/N of stellar point sources. The ph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64c3abe31a2fa45ed500775fafe87dce
https://doi.org/10.1017/s0252921100057602
https://doi.org/10.1017/s0252921100057602