Search Publications
K-CLASH: spatially resolving star-forming galaxies in field and cluster environments at z ≈ 0.2-0.6
Bunker, Andrew; Cappellari, Michele; Bureau, Martin +10 more
We present the KMOS-CLASH (K-CLASH) survey, a K-band Multi-Object Spectrograph (KMOS) survey, of the spatially resolved gas properties and kinematics of 191 (pre-dominantly blue) H α-detected galaxies at 0.2 ≲ z ≲ 0.6 in field and cluster environments. K-CLASH targets galaxies in four Cluster Lensing And Supernova survey with Hubble (CLASH) fields…
Possible Evidence of p-modes in Cassini Measurements of Saturn's Gravity Field
Iess, Luciano; Durante, Daniele; Markham, Steve +1 more
We analyze the range-rate residual data from Cassini's gravity experiment that cannot be explained with a static, zonally symmetric gravity field. We reproduce the data using a simple forward model of gravity perturbations from normal modes. To do this, we stack data from multiple flybys to improve sensitivity. We find a partially degenerate set o…
Spectral and emissivity analysis of the raised ramparts around Titan's northern lakes
Rodriguez, S.; Soderblom, J. M.; Janssen, M. A. +18 more
Some of Titan's small northern hemisphere lakes show raised rampart features (which are distinct from raised rims), and appear as SAR-bright mound-like annuli extending away from the lake for up to tens of kilometers from the shoreline. We investigate the infrared and microwave characteristics of these features using Cassini Visual and Infrared Ma…
Unravelling the enigmatic ISM conditions in Minkowski's object
Groves, Brent; Kewley, Lisa; Mukherjee, Dipanjan +7 more
Local examples of jet-induced star formation lend valuable insight into its significance in galaxy evolution and can provide important observational constraints for theoretical models of positive feedback. Using optical integral field spectroscopy, we present an analysis of the ISM conditions in Minkowski's object (z = 0.0189), a peculiar star-for…
Unveiling Sizes of Compact AGN Hosts with ALMA
Juneau, Stéphanie; Marchesi, Stefano; Dekel, Avishai +7 more
We present rest-frame far-infrared (FIR) and optical size measurements of active galactic nucleus (AGN) hosts and star-forming galaxies (SFGs) in the COSMOS field, enabled by high-resolution Atacama Large Millimeter/submillimeter Array (ALMA)/1 mm (0.″1-0.″4) and Hubble Space Telescope (HST)/F814W imaging (∼0.″1). Our sample includes 27 galaxies a…
Near-infrared Census of RR Lyrae Variables in the Messier 3 Globular Cluster and the Period-Luminosity Relations
Herczeg, Gregory J.; de Grijs, Richard; Rejkuba, Marina +4 more
We present new near-infrared (NIR), JHKs, time-series observations of RR Lyrae variables in the Messier 3 (NGC 5272) globular cluster using the WIRCam instrument at the 3.6 m Canada-France-Hawaii Telescope. Our observations cover a sky area of ∼21' × 21' around the cluster center and provide an average of 20 epochs of homogeneous JHK
Characterizing brown dwarf companions with IRDIS long-slit spectroscopy: HD 1160 B and HD 19467 B
Heng, K.; D'Orazi, V.; Boccaletti, A. +9 more
The determination of the fundamental properties (mass, separation, age, gravity, and atmospheric properties) of brown dwarf companions allows us to infer crucial informations on their formation and evolution mechanisms. Spectroscopy of substellar companions is available to date only for a limited number of objects (and mostly at very low resolutio…
The AGN contribution to the UV-FIR luminosities of interacting galaxies and its role in identifying the main sequence
Smith, Howard A.; Ashby, M. L. N.; Ramos Padilla, Andrés F. +5 more
Emission from active galactic nuclei (AGNs) is known to play an important role in the evolution of many galaxies including luminous and ultraluminous systems (U/LIRGs), as well as merging systems. However, the extent, duration, and exact effects of its influence are still imperfectly understood. To assess the impact of AGNs on interacting systems,…
Rapid Rotation of Kepler Field Dwarfs and Subgiants: Spectroscopic v sin i from APOGEE
van Saders, Jennifer L.; Simonian, Gregory V. A.; Pinsonneault, Marc H. +1 more
We use 5337 spectroscopic $v\sin i$ measurements of Kepler dwarfs and subgiants from the APOGEE survey to study stellar rotation trends. We find a detection threshold of 10 km s-1, which allows us to explore the spindown of intermediate-mass stars leaving the main sequence, merger products, young stars, and tidally synchronized binaries…
Birth sites of young stellar associations and recent star formation in a flocculent corrugated disc
Minchev, Ivan; Gagné, Jonathan; Chakrabarti, Sukanya +3 more
With backwards orbit integration, we estimate birth locations of young stellar associations and moving groups identified in the solar neighbourhood that are younger than 70 Myr. The birth locations of most of these stellar associations are at a smaller galactocentric radius than the Sun, implying that their stars moved radially outwards after birt…