Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Samantha L. Hoffmann"'
Autor:
Wenlong Yuan, Lucas M. Macri, Adam G. Riess, Thomas G. Brink, Stefano Casertano, Alexei V. Filippenko, Samantha L. Hoffmann, Caroline D. Huang, Dan Scolnic
Publikováno v:
The Astrophysical Journal. 940:64
NGC 4258 is one of the most important anchors for calibrating the Cepheid period--luminosity relations (PLRs) owing to its accurate distance measured from water maser motions. We expand on previous efforts and carry out a new Cepheid search in this s
Autor:
Richard I. Anderson, Stefano Casertano, Wenlong Yuan, Caroline Huang, Samantha L. Hoffmann, Joshua S. Bloom, Lucas M. Macri, Adam G. Riess, C. R. Klein, Patricia A. Whitelock, David O. Jones
Publikováno v:
NASA Astrophysics Data System
We present year-long, near-infrared Hubble Space Telescope WFC3 observations of Mira variables in the water megamaser host galaxy NGC 4258. Miras are AGB variables that can be divided into oxygen- (O-) and carbon- (C-) rich subclasses. Oxygen-rich Mi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2bda4c34aaf924fb588e103fe1418072
http://arxiv.org/abs/1801.02711
http://arxiv.org/abs/1801.02711
Autor:
Daniel Scolnic, Alexei V. Filippenko, Peter Challis, Ryan J. Foley, Ryan Chornock, Lucas M. Macri, Adam G. Riess, Mark J. Reid, Brad E. Tucker, Jeffrey M. Silverman, Wenlong Yuan, David O. Jones, Stefano Casertano, Peter J. Brown, Samantha L. Hoffmann
We use the Wide Field Camera 3 (WFC3) on the Hubble Space Telescope (HST) to reduce the uncertainty in the local value of the Hubble constant (H_0) from 3.3% to 2.4%. Improvements come from new, near-infrared observations of Cepheid variables in 11 n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac1c26762d7daf19c4203d1777b77385
http://arxiv.org/abs/1604.01424
http://arxiv.org/abs/1604.01424
Autor:
Brad E. Tucker, Lucas M. Macri, Wenlong Yuan, Jeffrey M. Silverman, Adam G. Riess, Ryan Chornock, Ryan J. Foley, Stefano Casertano, Ariel Goobar, Douglas L. Welch, Alexei V. Filippenko, Rahman Amanullah, Samantha L. Hoffmann
We present results of an optical search for Cepheid variable stars using the Hubble Space Telescope (HST) in 19 hosts of Type Ia supernovae (SNe Ia) and the maser-host galaxy NGC 4258, conducted as part of the SH0ES project (Supernovae and H0 for the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::850602c1bf9b37f520004198c70eb876
Publikováno v:
AIP Conference Proceedings.
We present preliminary results of a survey for Cepheids and long‐period variables in NGC 4258. This galaxy plays a key role in the Extragalactic Distance Scale due to its very precise and accurate maser‐based distance. Our observations were obtai
Autor:
Caroline D. Huang, Adam G. Riess, Wenlong Yuan, David O. Jones, Richard I. Anderson, Samantha L. Hoffmann, Stefano Casertano, Christopher Klein, Joshua Bloom, Lucas M. Macri, Patricia A. Whitelock
Publikováno v:
Astrophysical Journal; 4/10/2018, Vol. 857 Issue 1, p1-1, 1p
Autor:
Samantha L. Hoffmann, Lucas M. Macri, Adam G. Riess, Wenlong Yuan, Stefano Casertano, Ryan J. Foley, Alexei V. Filippenko, Brad E. Tucker, Ryan Chornock, Jeffrey M. Silverman, Douglas L. Welch, Ariel Goobar, Rahman Amanullah
Publikováno v:
Astrophysical Journal; 10/10/2016, Vol. 830 Issue 1, p1-1, 1p
Autor:
Adam G. Riess, Lucas M. Macri, Samantha L. Hoffmann, Dan Scolnic, Stefano Casertano, Alexei V. Filippenko, Brad E. Tucker, Mark J. Reid, David O. Jones, Jeffrey M. Silverman, Ryan Chornock, Peter Challis, Wenlong Yuan, Peter J. Brown, Ryan J. Foley
Publikováno v:
Astrophysical Journal; 7/20/2016, Vol. 826 Issue 1, p1-1, 1p
Autor:
Samantha L. Hoffmann, Lucas M. Macri
Publikováno v:
Astronomical Journal; jun2015, Vol. 149 Issue 6, p1-1, 1p