J
J. Chen
Researcher at Tsinghua University
Publications - 21
Citations - 1758
J. Chen is an academic researcher from Tsinghua University. The author has contributed to research in topics: Supernova & Light curve. The author has an hindex of 16, co-authored 21 publications receiving 1597 citations.
Papers
More filters
Journal ArticleDOI
Spectrophotometric time series of SN 2011fe from the Nearby Supernova Factory
R. Pereira,R. C. Thomas,Greg Aldering,P. Antilogus,C. Baltay,S. Benitez-Herrera,S. Bongard,C. Buton,A. Canto,F. Cellier-Holzem,J. Chen,M. J. Childress,M. J. Childress,N. Chotard,N. Chotard,Y. Copin,H. K. Fakhouri,H. K. Fakhouri,M. Fink,Dominique Fouchez,E. Gangler,Julien Guy,Wolfgang Hillebrandt,Eric Hsiao,M. Kerschhaggl,M. Kowalski,Markus Kromer,Jakob Nordin,Jakob Nordin,Peter Nugent,K. Paech,Reynald Pain,E. Pecontal,Saul Perlmutter,Saul Perlmutter,David Rabinowitz,M. Rigault,K. Runge,C. Saunders,G. Smadja,Charling Tao,Charling Tao,S. Taubenberger,A. Tilquin,C. Y. Wu,C. Y. Wu +45 more
TL;DR: In this paper, 32 epochs of optical (3300−9700 A) spectrophotometric observations of the nearby quintessential "normal" type Ia supernova (SN Ia) SN 2011fe in the galaxy M101, extending from −15 to +97 d with respect to B -band maximum, obtained by the Nearby Supernova Factory collaboration.
Journal ArticleDOI
Constraining type Ia supernova models: SN 2011fe as a test case
Friedrich K. Röpke,Friedrich K. Röpke,Markus Kromer,Ivo R. Seitenzahl,Ivo R. Seitenzahl,Ruediger Pakmor,Stuart A. Sim,S. Taubenberger,F. Ciaraldi-Schoolmann,Wolfgang Hillebrandt,Greg Aldering,P. Antilogus,C. Baltay,S. Benitez-Herrera,S. Bongard,C. Buton,A. Canto,F. Cellier-Holzem,M. J. Childress,M. J. Childress,N. Chotard,Y. Copin,H. K. Fakhouri,H. K. Fakhouri,M. Fink,M. Fink,D. Fouchez,E. Gangler,Julien Guy,Stephan Hachinger,Eric Hsiao,J. Chen,M. Kerschhaggl,M. Kowalski,Peter Nugent,K. Paech,Reynald Pain,E. Pecontal,R. Pereira,Saul Perlmutter,Saul Perlmutter,David Rabinowitz,M. Rigault,K. Runge,Clare Saunders,Clare Saunders,G. Smadja,Nao Suzuki,Charling Tao,R. C. Thomas,A. Tilquin,C. Y. Wu,C. Y. Wu +52 more
TL;DR: In this article, a simulation of a delayed detonation in a Chandrasekhar-mass white dwarf and a violent merger of two white dwarfs (WDs) was used to constrain SN Ia explosion scenarios.
Journal ArticleDOI
Confirmation of a Star Formation Bias in Type Ia Supernova Distances and its Effect on the Measurement of the Hubble Constant
M. Rigault,Greg Aldering,Marek Kowalski,Y. Copin,P. Antilogus,Cecilia Aragon,Cecilia Aragon,Stephen Bailey,C. Baltay,D. Baugh,S. Bongard,Kyle Boone,Kyle Boone,C. Buton,J. Chen,N. Chotard,H. K. Fakhouri,U. Feindt,U. Feindt,Parker Fagrelius,Parker Fagrelius,M. Fleury,Dominique Fouchez,E. Gangler,Brian Hayden,A. G. Kim,P.-F. Leget,S. Lombardo,Jakob Nordin,Jakob Nordin,Reynald Pain,E. Pecontal,R. Pereira,Saul Perlmutter,Saul Perlmutter,David Rabinowitz,K. Runge,David Rubin,David Rubin,C. Saunders,G. Smadja,Caroline Sofiatti,Caroline Sofiatti,Nao Suzuki,Nao Suzuki,C. Tao,C. Tao,B. A. Weaver +47 more
Abstract: Previously we used the Nearby Supernova Factory sample to show that SNe~Ia having locally star-forming environments are dimmer than SNe~Ia having locally passive environments.Here we use the \constitution\ sample together with host galaxy data from \GALEX\ to independently confirm that result. The effect is seen using both the SALT2 and MLCS2k2 lightcurve fitting and standardization methods, with brightness differences of $0.094 \pm 0.037\ \mathrm{mag}$ for SALT2 and $0.155 \pm 0.041\ \mathrm{mag}$ for MLCS2k2 with $R_V=2.5$. When combined with our previous measurement the effect is $0.094 \pm 0.025\ \mathrm{mag}$ for SALT2. If the ratio of these local SN~Ia environments changes with redshift or sample selection, this can lead to a bias in cosmological measurements. We explore this issue further, using as an example the direct measurement of $H_0$. \GALEX{} observations show that the SNe~Ia having standardized absolute magnitudes calibrated via the Cepheid period--luminosity relation using {\textit{HST}} originate in predominately star-forming environments, whereas only ~50% of the Hubble-flow comparison sample have locally star-forming environments. As a consequence, the $H_0$ measurement using SNe~Ia is currently overestimated. Correcting for this bias, we find a value of $H_0^{corr}=70.6\pm 2.6\ \mathrm{km\ s^{-1}\ Mpc^{-1}}$ when using the LMC distance, Milky Way parallaxes and the NGC~4258 megamaser as the Cepheid zeropoint, and $68.8\pm 3.3\ \mathrm{km\ s^{-1}\ Mpc^{-1}}$ when only using NGC~4258. Our correction brings the direct measurement of $H_0$ within $\sim 1\,\sigma$ of recent indirect measurements based on the CMB power spectrum.
Journal ArticleDOI
Spectrophotometric time series of SN 2011fe from the Nearby Supernova Factory
R. Pereira,R. C. Thomas,Greg Aldering,P. Antilogus,C. Baltay,S. Benitez-Herrera,S. Bongard,C. Buton,A. Canto,F. Cellier-Holzem,J. Chen,M. J. Childress,N. Chotard,Y. Copin,H. K. Fakhouri,M. Fink,D. Fouchez,E. Gangler,Julien Guy,Wolfgang Hillebrandt,Eric Hsiao,M. Kerschhaggl,M. Kowalski,Markus Kromer,J. Nordin,Peter Nugent,K. Paech,R. Pain,E. Pecontal,Saul Perlmutter,David Rabinowitz,M. Rigault,K. Runge,Clare Saunders,G. Smadja,Charling Tao,S. Taubenberger,A. Tilquin,Chen Wu +38 more
TL;DR: In this paper, 32 epochs of optical (3300-9700 A) spectrophotometric observations of the nearby quintessential "normal" type Ia supernova (SN Ia) SN 2011fe in the galaxy M101, extending from -15 to +97 d with respect to B-band maximum, obtained by the Nearby Supernova Factory collaboration.
Journal ArticleDOI
Confirmation of a Star Formation Bias in Type Ia Supernova Distances and its Effect on Measurement of the Hubble Constant
M. Rigault,Greg Aldering,M. Kowalski,Y. Copin,P. Antilogus,Cecilia Aragon,Stephen Bailey,C. Baltay,D. Baugh,S. Bongard,Kyle Boone,C. Buton,J. Chen,N. Chotard,H. K. Fakhouri,Ulrich Feindt,Parker Fagrelius,M. Fleury,D. Fouchez,E. Gangler,Brian Hayden,A. G. Kim,P.-F. Leget,Simona Lombardo,J. Nordin,R. Pain,E. Pecontal,R. Pereira,Saul Perlmutter,D. Rabinowitz,K. Runge,David Rubin,Clare Saunders,G. Smadja,Caroline Sofiatti,Nao Suzuki,Charling Tao,B. A. Weaver +37 more
TL;DR: In this article, the authors used the Nearby Supernova Factory (NSF) sample together with host galaxy data from \GALEX\ to independently confirm that result, with brightness differences of $0.094 \pm 0.037\ \mathrm{mag}