Publications (33)
Looking beyond lambda
Alexie Leauthaud, Adam Riess
Widening cracks are appearing in the CDM model and it is becoming increasingly clear that the standard cosmological model struggles to describe the full expansion history of th…
The Fall 2004 SDSS Supernova Survey
Masao Sako, Roger Romani, Josh Frieman +38
In preparation for the Supernova Survey of the Sloan Digital Sky Survey (SDSS) II, a proposed 3-year extension to the SDSS, we have conducted an early engineering and science run d…
Do SNe Ia Provide Direct Evidence for Past Deceleration of the Universe?
Michael S. Turner, Adam Riess
Observations of SN 1997ff at z ~ 1.7 favor the accelerating Universe interpretation of the high-redshift type Ia supernova data over simple models of intergalactic dust or SN lumin…
The NICMOS Ultra Deep Field: Observations, Data Reduction, and Galaxy Photometry
Rodger I. Thompson, Garth Illingworth, Rychard Bouwens +10
This paper describes the observations and data reduction techniques for the version 2.0 images and catalog of the NICMOS Ultra Deep Field Treasury program. All sources discussed in…
CLASH: Precise New Constraints on the Mass Profile of Abell 2261
Dan Coe, Keiichi Umetsu, Adi Zitrin +43
We precisely constrain the inner mass profile of Abell 2261 (z=0.225) for the first time and determine this cluster is not "over-concentrated" as found previously, implying a forma…
The Next Generation of Cosmological Measurements with Type Ia Supernovae
Dan Scolnic, Saul Perlmutter, Greg Aldering +56
While Type Ia Supernovae (SNe Ia) are one of the most mature cosmological probes, the next era promises to be extremely exciting in the number of different ways SNe Ia are used to…
Have the Elusive Progenitors of Supernovae Type Ia Been Discovered?
Mario Livio, Adam Riess
The recent detection of H-alpha emission in the supernova Type Ia SN 2002ic could be taken to mean that the elusive progenitor systems of Type Ia supernovae have finally been ident…
The Local Distance Network: a community consensus report on the measurement of the Hubble constant at 1% precision
H0DN Collaboration, Stefano Casertano, Gagandeep Anand +35
The direct, empirical determination of the local value of the Hubble constant (H0) has markedly advanced thanks to improved instrumentation, measurement techniques, and distance es…
Reassessing the Constraints from SH0ES Extragalactic Cepheid Amplitudes on Systematic Blending Bias
Amir Sharon, Doron Kushnir, Wenlong Yuan +2
The SH0ES collaboration Hubble constant determination is in a difference with the value, known as the Hubble tension. The accuracy of the Hubble constant measu…
Envisioning the Distance Ladder in the Era of the Habitable Worlds Observatory
Gagandeep Anand, Meredith Durbin, Rachael Beaton +2
The current state-of-the-art cosmic distance ladder requires three rungs--geometric distances, primary indicators, and Type Ia Supernovae--to achieve a 1% measurement of the Hubble…
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
Cosmology with Photometrically-Classified Type Ia Supernovae from the SDSS-II Supernova Survey
Heather Campbell, Chris B. D'Andrea, Robert C. Nichol +25
We present the cosmological analysis of 752 photometrically-classified Type Ia Supernovae (SNe Ia) obtained from the full Sloan Digital Sky Survey II (SDSS-II) Supernova (SN) Surve…
23 High Redshift Supernovae from the IfA Deep Survey: Doubling the SN Sample at z>0.7
Brian J. Barris, John Tonry, Stephane Blondin +29
We present photometric and spectroscopic observations of 23 high redshift supernovae spanning a range of z=0.34-1.03, 9 of which are unambiguously classified as Type Ia. These supe…
Photometric Calibrations for 21st Century Science
Stephen Kent, Mary Elizabeth Kaiser, Susana E. Deustua +33
The answers to fundamental science questions in astrophysics, ranging from the history of the expansion of the universe to the sizes of nearby stars, hinge on our ability to make p…
Cluster Lensing And Supernova survey with Hubble (CLASH): An Overview
Marc Postman, Dan Coe, Narciso Benitez +42
The Cluster Lensing And Supernova survey with Hubble (CLASH) is a 524-orbit multi-cycle treasury program to use the gravitational lensing properties of 25 galaxy clusters to accura…
Exploring the NRO Opportunity for a Hubble-sized Wide-field Near-IR Space Telescope -- NEW WFIRST
Alan Dressler, David Spergel, Matt Mountain +24
We discuss scientific, technical and programmatic issues related to the use of an NRO 2.4m telescope for the WFIRST initiative of the 2010 Decadal Survey. We show that this impleme…
Forward-modelling Milky Way Cepheids: selection effects and physical priors in the Gaia-HST calibration
Richard Stiskalek, Adam Riess, Harry Desmond +2
The advent of high-precision Gaia parallaxes for Milky Way Cepheids enables per cent-level calibration of the local distance ladder and the Hubble constant . We revisit the Mi…
Calibrating the cosmic distance scale ladder: the role of the sound horizon scale and the local expansion rate as distance anchors
Antonio J. Cuesta, Licia Verde, Adam Riess +1
We exploit cosmological-model independent measurements of the expansion history of the Universe to provide a cosmic distance ladder. These are supernovae type Ia used as standard c…
The Local Perspective on the Hubble Tension: Local Structure Does Not Impact Measurement of the Hubble Constant
W. D'Arcy Kenworthy, Dan Scolnic, Adam Riess
We use the largest sample to date of spectroscopic SN Ia distances and redshifts to look for evidence in the Hubble diagram of large scale outflows caused by local voids suggested…
A Redshift z=5.4 Lyman alpha Emitting Galaxy with Linear Morphology in the GRAPES/UDF Field
James E. Rhoads, Nino Panagia, Rogier A. Windhorst +21
We have discovered an extended Lyman alpha plume associated with a compact source at redshift 5.4 in slitless spectroscopic data from the Grism ACS Program for Extragalactic Scienc…
Will Jets Identify the Progenitors of Type Ia Supernovae?
Mario Livio, Adam Riess, William Sparks
We use the fact that a Type Ia supernova has been serendipitously discovered near the jet of the active galaxy 3C 78 to examine the question of whether jets can enhance accretion o…
Old Universe, Young SNe Ia: A Statistical Analysis of Type Ia Supernova Progenitor Age from 6,983 TITAN Host Galaxies, and Implications for Cosmology
Yukei Murakami, Jack Tweddle, Phil Wiseman +17
Correlations between standardized Type Ia supernova (SN Ia) luminosities and host-galaxy properties are routinely modeled to avoid bias in cosmological parameter inference. A recen…
Constraining Fifth Forces using the Local Distance Ladder: Implications for the Hubble Tension
Marcus Högås, Edvard Mörtsell, Harry Desmond +1
We revisit the local distance ladder measurement of the Hubble constant in models where gravity is modified by a fifth force, an additional long-range interaction. In many such the…
Galaxy halo truncation and Giant Arc Surface Brightness Reconstruction in the Cluster MACSJ1206.2-0847
Thomas Eichner, Stella Seitz, Sherry H. Suyu +32
In this work we analyze the mass distribution of MACSJ1206.2-0847, especially focusing on the halo properties of its cluster members. The cluster appears relaxed in its X-ray emiss…
Tentative detection of the gravitational magnification of type Ia supernovae
Jakob Jonsson, Tomas Dahlen, Ariel Goobar +2
The flux from distant type Ia supernovae (SN) is likely to be amplified or de-amplified by gravitational lensing due to matter distributions along the line-of-sight. A gravitationa…
The Pantheon+ Analysis: SuperCal-Fragilistic Cross Calibration, Retrained SALT2 Light Curve Model, and Calibration Systematic Uncertainty
Dillon Brout, Georgie Taylor, Dan Scolnic +9
We present here a re-calibration of the photometric systems used in the Pantheon+ sample of Type Ia supernovae (SNe Ia) including those used for the SH0ES distance-ladder measureme…
The iron and oxygen content of LMC Classical Cepheids and its implications for the Extragalactic Distance Scale and Hubble constant
Martino Romaniello, Adam Riess, Sara Mancino +6
Classical Cepheids are primary distance indicators and a crucial stepping stone to determining the present-day Hubble constant Ho to the precision and accuracy required to constrai…
The Reionization Lensing Cluster Survey (RELICS) and the Brightest High-z Galaxies
Brett Salmon, Dan Coe, Larry Bradley +31
Massive foreground galaxy clusters magnify and distort the light of objects behind them, permitting a view into both the extremely distant and intrinsically faint galaxy population…
A Precise Distance Indicator: Type Ia Supernova Multicolor Light Curve Shapes
Adam Riess, William Press, Robert Kirshner
We present an empirical method that uses multicolor light curve shapes (MLCS) to estimate the luminosity, distance, and total line-of-sight extinction of Type Ia supernovae (SN Ia)…
Cosmological tensions in the birthplace of the heliocentric model
Eleonora Di Valentino, Emmanuel Saridakis, Adam Riess
The theme of tensions in cosmology has become increasingly important in the cosmological community, proving capable of attracting new generations of scientists who want to be there…
The Impact of Dust on Cepheid and Type Ia Supernova Distances
Dillon Brout, Adam Riess
Milky-Way and intergalactic dust extinction and reddening must be accounted for in measurements of distances throughout the universe. This work provides a comprehensive review of t…
Illuminating a Dark Lens : A Type Ia Supernova Magnified by the Frontier Fields Galaxy Cluster Abell 2744
Steven A. Rodney, Brandon Patel, Daniel Scolnic +27
SN HFF14Tom is a Type Ia Supernova (SN) discovered at z = 1.3457 +- 0.0001 behind the galaxy cluster Abell 2744 (z = 0.308). In a cosmology-independent analysis, we find that HFF14…
Evidence for Type Ia Supernova Diversity from Ultraviolet Observations with the Hubble Space Telescope
Xiaofeng Wang, Lifan Wang, Alexei V. Filippenko +93
We present ultraviolet (UV) spectroscopy and photometry of four Type Ia supernovae (SNe 2004dt, 2004ef, 2005M, and 2005cf) obtained with the UV prism of the Advanced Camera for Sur…