Search Publications
A Measurement of the Cosmic Microwave Background B-mode Polarization Power Spectrum at Subdegree Scales from Two Years of polarbear Data
Ade, P. A. R.; Baccigalupi, C.; Borrill, J. +79 more
We report an improved measurement of the cosmic microwave background B-mode polarization power spectrum with the Polarbear experiment at 150 GHz. By adding new data collected during the second season of observations (2013-2014) to re-analyzed data from the first season (2012-2013), we have reduced twofold the band-power uncertainties. The band pow…
A Close-up View of the Young Circumbinary Disk HD 142527
Ricci, L.; Boehler, Y.; Grady, C. +4 more
We present ALMA observations of the 0.88 millimeter dust continuum and the 13CO and C18O J = 3-2 line emission of the circumbinary disk HD 142527 at a spatial resolution of ∼0.″25. This system is characterized by a large central cavity of roughly 120 au in radius, and asymmetric dust and gas emission. By comparing the observa…
Warm inflation dissipative effects: Predictions and constraints from the Planck data
Benetti, Micol; Ramos, Rudnei O.
We explore the warm inflation scenario theoretical predictions looking at two different dissipative regimes for several representative primordial potentials. As it is well known, warm inflation is able to decrease the tensor-to-scalar ratio value, rehabilitating several primordial potentials ruled out in the cold inflation context by the recent co…
Characterizing the UV-to-NIR shape of the dust attenuation curve of IR luminous galaxies up to z ∼ 2
Buat, V.; Burgarella, D.; Efstathiou, A. +4 more
In this work, we investigate the far-ultraviolet (UV) to near-infrared (NIR) shape of the dust attenuation curve of a sample of IR-selected dust obscured (ultra)luminous IR galaxies at z ∼ 2. The spectral energy distributions (SEDs) are fitted with Code Investigating GALaxy Emission, a physically motivated spectral-synthesis model based on energy …
MOSFIRE Spectroscopy of Quiescent Galaxies at 1.5 < z < 2.5. I. Evolution of Structural and Dynamical Properties
Ellis, Richard S.; Belli, Sirio; Newman, Andrew B.
We present deep near-infrared spectra for a sample of 24 quiescent galaxies in the redshift range 1.5< z< 2.5 obtained with the MOSFIRE spectrograph at the W. M. Keck Observatory. In conjunction with a similar data set we obtained in the range 1< z< 1.5 with the LRIS spectrograph, we analyze the kinematic and structural properties for …
Wide binaries in Tycho-Gaia: search method and the distribution of orbital separations
Agüeros, Marcel A.; Andrews, Jeff J.; Chanamé, Julio
We mine the Tycho-Gaia astrometric solution (TGAS) catalogue for wide stellar binaries by matching positions, proper motions and astrometric parallaxes. We separate genuine binaries from unassociated stellar pairs through a Bayesian formulation that includes correlated uncertainties in the proper motions and parallaxes. Rather than relying on assu…
Planet Formation in AB Aurigae: Imaging of the Inner Gaseous Spirals Observed inside the Dust Cavity
Inutsuka, Shu-ichiro; Ohashi, Nagayoshi; Tang, Ya-Wen +13 more
We report the results of ALMA observations of a protoplanetary disk surrounding the Herbig Ae star AB Aurigae. We obtained high-resolution (0.″1 14 au) images in 12CO J = 2 - 1 emission and in the dust continuum at the wavelength of 1.3 mm. The continuum emission is detected at the center and at the ring with a radius (r) of ∼120 au. Th…
Revealing Black Holes with Gaia
Larson, Shane L.; Breivik, Katelyn; Chatterjee, Sourav
We estimate the population of black holes with luminous stellar companions (BH-LCs) in the Milky Way (MW) observable by Gaia. We evolve a realistic distribution of BH-LC progenitors from zero-age to the current epoch taking into account relevant physics, including binary stellar evolution, BH-formation physics, and star formation rate, in order to…
PLATO as it is : A legacy mission for Galactic archaeology
Strassmeier, K. G.; Rauer, H.; Gilmore, G. +102 more
Deciphering the assembly history of the Milky Way is a formidable task, which becomes possible only if one can produce high-resolution chrono-chemo-kinematical maps of the Galaxy. Data from large-scale astrometric and spectroscopic surveys will soon provide us with a well-defined view of the current chemo-kinematical structure of the Milky Way, bu…
Evolution of cosmic star formation in the SCUBA-2 Cosmology Legacy Survey
Scott, D.; Dunlop, J. S.; Farrah, D. +19 more
We present a new exploration of the cosmic star formation history and dust obscuration in massive galaxies at redshifts 0.5 < z < 6. We utilize the deepest 450- and 850-µm imaging from SCUBA-2 CLS, covering 230 arcmin2 in the AEGIS, COSMOS and UDS fields, together with 100-250 µm imaging from Herschel. We demonstrate t…