Search Publications
An Updated 2017 Astrometric Solution for Betelgeuse
Kervella, P.; Decin, L.; Richards, A. M. S. +4 more
We provide an update for the astrometric solution for the Type II supernova progenitor Betelgeuse using the revised Hipparcos Intermediate Astrometric Data (HIAD) of van Leeuwen, combined with existing VLA and new e-MERLIN and ALMA positions. The 2007 Hipparcos refined abscissa measurements required the addition of so-called Cosmic Noise of 2.4 ma…
Gaia16apd - a link between fast and slowly declining type I superluminous supernovae
Lundqvist, P.; Wyrzykowski, Ł.; Kankare, E. +18 more
We present ultraviolet (UV), optical and infrared photometry and optical spectroscopy of the type Ic superluminous supernova (SLSN) Gaia16apd (=SN 2016eay), covering its evolution from 26 d before the g-band peak to 234.1 d after the peak. Gaia16apd was followed as a part of the NOT Unbiased Transient Survey (NUTS). It is one of the closest SLSNe …
Assessing distances and consistency of kinematics in Gaia/TGAS
Schönrich, Ralph; Aumer, Michael
We apply the statistical methods by Schönrich, Binney & Asplund to assess the quality of distances and kinematics in the Radial Velocity Experiment (RAVE)-Tycho-Gaia Astrometric Solution (TGAS) and Large Sky Area Multiobject Fiber Spectroscopic Telescope (LAMOST)-TGAS samples of Solar neighbourhood stars. These methods yield a nominal distance…
Cosmological constraints from thermal Sunyaev-Zeldovich power spectrum revisited
Seljak, U.; Horowitz, B.
Thermal Sunyaev-Zeldovich (tSZ) power spectrum is one of the most sensitive methods to constrain cosmological parameters, scaling as the amplitude σ _8^8. It is determined by the integral over the halo mass function multiplied by the total pressure content of clusters and further convolved by the cluster gas pressure profile. It has been shown tha…
The Great Observatories All-Sky LIRG Survey: Herschel Image Atlas and Aperture Photometry
Sanders, D. B.; Frayer, D. T.; Kim, D. -C. +24 more
Far-infrared images and photometry are presented for 201 Luminous and Ultraluminous Infrared Galaxies [LIRGs: log ({L}{IR}/{L}⊙ )=11.00{--}11.99, ULIRGs: log ({L}{IR}/{L}⊙ )=12.00{--}12.99], in the Great Observatories All-Sky LIRG Survey (GOALS), based on observations with the Herschel Space Observatory …
Molecular gas properties of a lensed star-forming galaxy at z 3.6: a case study
Kneib, J. -P.; Schaerer, D.; Rujopakarn, W. +12 more
We report on the galaxy MACSJ0032-arc at zCO = 3.6314 discovered during the Herschel Lensing snapshot Survey of massive galaxy clusters, and strongly lensed by the cluster MACS J0032.1+1808. The successful detections of its rest-frame ultraviolet (UV), optical, far-infrared (FIR), millimeter, and radio continua, and of its CO emission e…
The Mass, Color, and Structural Evolution of Today’s Massive Galaxies Since z ∼ 5
Franx, Marijn; Muzzin, Adam; van Dokkum, Pieter +12 more
In this paper, we use stacking analysis to trace the mass growth, color evolution, and structural evolution of present-day massive galaxies ({log}({M}* /{M}⊙ )=11.5) out to z = 5. We utilize the exceptional depth and area of the latest UltraVISTA data release, combined with the depth and unparalleled seeing of CANDELS to gath…
Connecting Clump Sizes in Turbulent Disk Galaxies to Instability Theory
Glazebrook, Karl; Bolatto, Alberto D.; Obreschkow, Danail +8 more
In this letter we study the mean sizes of Hα clumps in turbulent disk galaxies relative to kinematics, gas fractions, and Toomre Q. We use ∼100 pc resolution HST images, IFU kinematics, and gas fractions of a sample of rare, nearby turbulent disks with properties closely matched to z∼ 1.5{--}2 main-sequence galaxies (the DYNAMO sample). We find li…
The MOSDEF Survey: Metallicity Dependence of PAH Emission at High Redshift and Implications for 24 µm Inferred IR Luminosities and Star Formation Rates at z ∼ 2
Siana, Brian; Shapley, Alice E.; Reddy, Naveen A. +9 more
We present results on the variation of 7.7 µm polycyclic aromatic hydrocarbon (PAH) emission in galaxies spanning a wide range in metallicity at z ∼ 2. For this analysis, we use rest-frame optical spectra of 476 galaxies at 1.37 ≤ z ≤ 2.61 from the MOSFIRE Deep Evolution Field (MOSDEF) survey to infer metallicities and ionization states. Spi…
Energy conversion at dipolarization fronts
André, M.; Vaivads, A.; Khotyaintsev, Yu. V. +2 more
We use multispacecraft observations by Cluster in the Earth's magnetotail and 3-D particle-in-cell simulations to investigate conversion of electromagnetic energy at the front of a fast plasma jet. We find that the major energy conversion is happening in the Earth (laboratory) frame, where the electromagnetic energy is being transferred from the e…