Search Results - "Balam, D."

SNLS3: Constraints on Dark Energy Combining the Supernova Legacy Survey Three-year Data with Other Probes by Sullivan, M, Guy, J, Conley, A, Regnault, N, Astier, P, Balland, C, Basa, S, Carlberg, R. G, Fouchez, D, Hardin, D, Hook, I. M, Howell, D. A, Pain, R, Palanque-Delabrouille, N, Perrett, K. M, Pritchet, C. J, Rich, J, Ruhlmann-Kleider, V, Balam, D, Baumont, S, Ellis, R. S, Fabbro, S, Fakhouri, H. K, Fourmanoit, N, González-Gaitán, S, Graham, M. L, Hudson, M. J, Hsiao, E, Kronborg, T, Lidman, C, Mourao, A. M, Neill, J. D, Perlmutter, S, Ripoche, P, Suzuki, N, Walker, E. S

“…We present observational constraints on the nature of dark energy using the Supernova Legacy Survey three-year sample (SNLS3) of Guy et al. and Conley et al…”
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SiFTO: An Empirical Method for Fitting SN Ia Light Curves by Conley, A, Sullivan, M, Hsiao, E. Y, Guy, J, Astier, P, Balam, D, Balland, C, Basa, S, Carlberg, R. G, Fouchez, D, Hardin, D, Howell, D. A, Hook, I. M, Pain, R, Perrett, K, Pritchet, C. J, Regnault, N

“…We present SiFTO, a new empirical method for modeling Type Ia supernova (SN Ia) light curves by manipulating a spectral template. We make use of high-redshift…”
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A Dark Core in Abell 520 by Mahdavi, Andisheh, Hoekstra, Henk, Babul, Arif, Balam, David D, Capak, Peter L

“…The rich cluster Abell 520 (z = 0.201) exhibits truly extreme and puzzling multiwavelength characteristics. It may best be described as a "cosmic train wreck."…”
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Rates and Properties of Type Ia Supernovae as a Function of Mass and Star Formation in Their Host Galaxies by Sullivan, M, Le Borgne, D, Pritchet, C. J, Hodsman, A, Neill, J. D, Howell, D. A, Carlberg, R. G, Astier, P, Aubourg, E, Balam, D, Basa, S, Conley, A, Fabbro, S, Fouchez, D, Guy, J, Hook, I, Pain, R, Palanque-Delabrouille, N, Perrett, K, Regnault, N, Rich, J, Taillet, R, Baumont, S, Bronder, J, Ellis, R. S, Filiol, M, Lusset, V, Perlmutter, S, Ripoche, P, Tao, C

“…We show that Type Ia supemovae (SNe Ia) are formed within both very young and old stellar populations, with observed rates that depend on the stellar mass and…”
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Verifying the Cosmological Utility of Type Ia Supernovae: Implications of a Dispersion in the Ultraviolet Spectra by Ellis, R. S, Sullivan, M, Nugent, P. E, Howell, D. A, Gal-Yam, A, Astier, P, Balam, D, Balland, C, Basa, S, Carlberg, R. G, Conley, A, Fouchez, D, Guy, J, Hardin, D, Hook, I, Pain, R, Perrett, K, Pritchet, C. J, Regnault, N

“…We analyze the mean rest-frame ultraviolet (UV) spectrum of Type Ia Supernovae (SNe) and its dispersion using high signal-to-noise ratio Keck-I/LRIS-B…”
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Gemini Spectroscopy of Supernovae from the Supernova Legacy Survey: Improving High-Redshift Supernova Selection and Classification by Howell, D. A, Sullivan, M, Perrett, K, Bronder, T. J, Hook, I. M, Astier, P, Aubourg, E, Balam, D, Basa, S, Carlberg, R. G, Fabbro, S, Fouchez, D, Guy, J, Lafoux, H, Neill, J. D, Pain, R, Palanque-Delabrouille, N, Pritchet, C. J, Regnault, N, Rich, J, Taillet, R, Knop, R, McMahon, R. G, Perlmutter, S, Walton, N. A

“…We present new techniques for improving the efficiency of supernova (SN) classification at high redshift using 64 candidates observed at Gemini North and South…”
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Alessi 95 and the short-period Cepheid SU Cassiopeiae by Turner, D. G., Majaess, D. J., Lane, D. J., Balam, D. D., Gieren, W. P., Storm, J., Forbes, D. W., Havlen, R. J., Alessi, B.

“…The parameters for the newly discovered open cluster Alessi 95 are established on the basis of available photometric and spectroscopic data, in conjunction…”
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HD 181068: A Red Giant in a Triply Eclipsing Compact Hierarchical Triple System by Derekas, A., Kiss, L. L., Borkovits, T., Huber, D., Lehmann, H., Southworth, J., Bedding, T. R., Balam, D., Hartmann, M., Hrudkova, M., Ireland, M. J., Kovács, J., Mező, Gy, Moór, A., Niemczura, E., Sarty, G. E., Szabó, Gy. M., Szabó, R., Telting, J. H., Tkachenko, A., Uytterhoeven, K., Benkő, J. M., Bryson, S. T., Maestro, V., Simon, A. E., Stello, D., Schaefer, G., Aerts, C., Brummelaar, T. A. ten, De Cat, P., McAlister, H. A., Maceroni, C., Mérand, A., Still, M., Sturmann, J., Sturmann, L., Turner, N., Tuthill, P. G., Christensen-Dalsgaard, J., Gilliland, R. L., Kjeldsen, H., Quintana, E. V., Tenenbaum, P., Twicken, J. D.

“…Hierarchical triple systems comprise a close binary and a more distant component. They are important for testing theories of star formation and of stellar…”
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ANCHORING THE DISTANCE SCALE VIA X-RAY/INFRARED DATA FOR CEPHEID CLUSTERS: SU Cas by Majaess, D, Turner, D G, Gallo, L, Gieren, W, Bonatto, C, Lane, D J, Balam, D, Berdnikov, L

“…New X-ray (XMM-Newton) and JHK sub(s) (Observatoire du Mont-Megantic) observations for members of the star cluster Alessi 95, which Turner et al. discovered…”
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Subluminous Type Ia Supernovae at High Redshift from the Supernova Legacy Survey by González-Gaitán, S, Perrett, K, Sullivan, M, Conley, A, Howell, D. A, Carlberg, R. G, Astier, P, Balam, D, Balland, C, Basa, S, Fouchez, D, Guy, J, Hardin, D, Hook., I. M, Pain, R, Pritchet, C. J, Regnault, N, Rich, J, Lidman, C

“…The rate evolution of subluminous Type Ia supernovae (SNe Ia) is presented using data from the Supernova Legacy Survey. This sub-sample represents the faint…”
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New Results for the Open Cluster Bica 6 and Its Associated Planetary Nebula Abell 8 by Turner, D. G., Rosvick, J. M., Balam, D. D., Henden, A. A., Majaess, D. J., Lane, D. J.

“…The likely membership of the planetary nebula Abell 8 (PN G167.0–00.9) in the open cluster Bica 6 is confirmed by CCD spectra, UBV(RI) C U B V ( R I ) C…”
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The Rise Time of Normal and Subluminous Type Ia Supernovae by González-Gaitán, S, Conley, A, Bianco, F. B, Howell, D. A, Sullivan, M, Perrett, K, Carlberg, R, Astier, P, Balam, D, Balland, C, Basa, S, Fouchez, D, Fourmanoit, N, Graham, M. L, Guy, J, Hardin, D, Hook, I. M, Lidman, C, Pain, R, Palanque-Delabrouille, N, Pritchet, C. J, Regnault, N, Rich, J, Ruhlmann-Kleider, V

“…(ProQuest: ... denotes formulae and/or non-USASCII text omitted) We calculate the average stretch-corrected rise time of Type Ia supernovae (SNe Ia) in the…”
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HUBBLE SPACE TELESCOPE AND GROUND-BASED OBSERVATIONS OF THE TYPE Iax SUPERNOVAE SN 2005hk AND SN 2008A by McCully, Curtis, Jha, Saurabh W, Foley, Ryan J, CHORNOCK, RYAN, Holtzman, Jon A, Balam, David D, Branch, David, Filippenko, Alexei V, Frieman, Joshua, Fynbo, Johan

“…We present Hubble Space Telescope(HST) and ground-based optical and near-infrared observations of SN 2005hk and SN 2008A, typical members of the Type Iax class…”
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Clustering of Supernova Ia Host Galaxies by Carlberg, R. G, Sullivan, M, Le Borgne, D, Conley, A, Howell, D. A, Perrett, K, Astier, P, Balam, D, Balland, C, Basa, S, Hardin, D, Fouchez, D, Guy, J, Hook, I, Pain, R, Pritchet, C. J, Regnault, N, Rich, J, Perlmutter, S

“…For the first time the cross-correlation between Type Ia supernova host galaxies and surrounding field galaxies is measured using the Supernova Legacy Survey…”
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The Effect of Progenitor Age and Metallicity on Luminosity and 56Ni Yield in Type Ia Supernovae by Howell, D. A, Sullivan, M, Brown, E. F, Conley, A, Le Borgne, D, Hsiao, E. Y, Astier, P, Balam, D, Balland, C, Basa, S, Carlberg, R. G, Fouchez, D, Guy, J, Hardin, D, Hook, I. M, Pain, R, Perrett, K, Pritchet, C. J, Regnault, N, Baumont, S, Le Du, J, Lidman, C, Perlmutter, S, Suzuki, N, Walker, E. S, Wheeler, J. C

“…Timmes et al. found that metallicity variations could theoretically account for a 25% variation in the mass of 56Ni synthesized in Type Ia supernovae (SNe Ia),…”
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THE GALACTIC CALIBRATION OF THE CEPHEID PERIOD-LUMINOSITY RELATION AND ITS IMPLICATIONS FOR THE UNIVERSAL DISTANCE SCALE by D. G. Turner, D. J. Majaess, D. J. Lane, J. M. Rosvick, A. A. Henden, D. D. Balam

“…The Galactic calibration of the period-luminosity (PL) relation for classical Cepheids is examined using trigonometric, open cluster, and pulsation parallaxes,…”
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SPECTRAL TYPE AND RADIAL VELOCITY VARIATIONS IN THREE SRC VARIABLES by K. E. Moncrieff, D. G. Turner, C. I. Short, P. D. Bennett, D. D. Balam, R. F. Griffin

“…SRC variables are M supergiants, precursors to Type II supernovae, that vary in brightness with moderately regular periods of order 100–1000 days. Although…”
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SPECTROSCOPIC INVESTIGATIONS OF POLARIS FIELD STARS by Usenko, I. A., Miroshnichenko, A. S., Danford, S., Turner, D. G., Majaess, D. J., Balam, D. D.

“…We present the results of an analysis of 28 spectra of 18 Polaris field A–G V stars obtained in 2016–2023. Derived radial velocities and Teff along with…”
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The type Ia supernova SNLS-03D3bb from a super-Chandrasekhar-mass white dwarf star by Andrew Howell, D, Sullivan, Mark, Nugent, Peter E, Ellis, Richard S, Conley, Alexander J, Le Borgne, Damien, Carlberg, Raymond G, Guy, Julien, Balam, David, Basa, Stephane, Fouchez, Dominique, Hook, Isobel M, Hsiao, Eric Y, Neill, James D, Pain, Reynald, Perrett, Kathryn M, Pritchet, Christopher J

“…The accelerating expansion of the Universe, and the need for dark energy, were inferred from observations of type Ia supernovae. There is a consensus that type…”
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DISCOVERY OF THE HOST CLUSTER FOR THE FUNDAMENTAL CEPHEID CALIBRATOR ZETA GEMINORUM by MAJAESS, D, TURNER, D, GIEREN, W, BALAM, D, LANE, D

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