Search Publications
A Galaxy-scale Fountain of Cold Molecular Gas Pumped by a Black Hole
Simionescu, A.; Fabian, A. C.; Gaspari, M. +36 more
We present Atacama Large Millimeter/submillimeter Array and Multi-Unit Spectroscopic Explorer observations of the brightest cluster galaxy in Abell 2597, a nearby (z = 0.0821) cool core cluster of galaxies. The data map the kinematics of a three billion solar mass filamentary nebula that spans the innermost 30 kpc of the galaxy’s core. Its warm io…
SHINING, A Survey of Far-infrared Lines in Nearby Galaxies. II. Line-deficit Models, AGN Impact, [C II]-SFR Scaling Relations, and Mass-Metallicity Relation in (U)LIRGs
Lutz, D.; Genzel, R.; Maiolino, R. +12 more
The SHINING survey offers a great opportunity to study the properties of the ionized and neutral media of galaxies from prototypical starbursts and active galactic nuclei (AGNs) to heavily obscured objects. Based on Herschel/PACS observations of the main far-infrared (FIR) fine-structure lines, in this paper, we analyze the physical mechanisms beh…
The Proper Motion Field of the Small Magellanic Cloud: Kinematic Evidence for Its Tidal Disruption
Kochanek, C. S.; van der Marel, Roeland P.; Anderson, J. +9 more
We present a new measurement of the systemic proper motion of the Small Magellanic Cloud (SMC), based on an expanded set of 30 fields containing background quasars and spanning a ∼3 year baseline, using the Hubble Space Telescope (HST) Wide Field Camera 3. Combining this data with our previous five HST fields, and an additional eight measurements …
Measuring the Value of the Hubble Constant “à la Refsdal”
Treu, T.; Grillo, C.; Balestra, I. +8 more
Realizing Refsdal’s original idea from 1964, we present estimates of the Hubble constant that are complementary to, and potentially competitive with, those of other cosmological probes. We use the observed positions of 89 multiple images, with extensive spectroscopic information, from 28 background sources and the measured time delays between the …
A New Look at T Tauri Star Forbidden Lines: MHD-driven Winds from the Inner Disk
Fang, Min; Pascucci, Ilaria; Edwards, Suzan +6 more
Magnetohydrodynamic (MHD) and photoevaporative winds are thought to play an important role in the evolution and dispersal of planet-forming disks. We report the first high-resolution (Δv ∼ 6 km s-1) analysis of [S II] λ4068, [O I] λ5577, and [O I] λ6300 lines from a sample of 48 T Tauri stars. Following Simon et al. we decompose them in…
Circumnuclear Multiphase Gas in the Circinus Galaxy. II. The Molecular and Atomic Obscuring Structures Revealed with ALMA
Kohno, Kotaro; Wada, Keiichi; Izumi, Takuma +2 more
We used the Atacama Large Millimeter/Submillimeter Array (ALMA) to map the CO(3-2) and [C I](1-0) lines, as well as their underlying continuum emission, from the central ∼200 pc region of the Circinus galaxy that hosts the nearest type 2 Seyfert-class active galactic nucleus (AGN), with a spatial resolution of ∼6-15 pc. The lines and continuum-emi…
Demographics of Star-forming Galaxies since z ∼ 2.5. I. The UVJ Diagram in CANDELS
Finkelstein, Steven L.; Barro, Guillermo; Pérez-González, Pablo G. +41 more
This is the first in a series of papers examining the demographics of star-forming (SF) galaxies at 0.2 < z < 2.5 in CANDELS. We study 9100 galaxies from GOODS-S and UDS, having published values of redshifts, masses, star formation rates (SFRs), and dust attenuation (A V ) derived from UV-optical spectral energy distribution fitt…
An Enigmatic Population of Luminous Globular Clusters in a Galaxy Lacking Dark Matter
Mowla, Lamiya; van Dokkum, Pieter; Romanowsky, Aaron J. +10 more
We recently found an ultra diffuse galaxy (UDG) with a half-light radius of R e = 2.2 kpc and little or no dark matter. The total mass of NGC1052-DF2 was measured from the radial velocities of bright compact objects that are associated with the galaxy. Here, we analyze these objects using a combination of Hubble Space Telescope (HST) …
ASASSN-18ey: The Rise of a New Black Hole X-Ray Binary
Kochanek, C. S.; Rest, A.; Stalder, B. +24 more
We present the discovery of ASASSN-18ey (MAXI J1820+070), a new black hole low-mass X-ray binary (LMXB) discovered by the All-Sky Automated Survey for SuperNovae (ASAS-SN). A week after ASAS-SN discovered ASASSN-18ey as an optical transient, it was detected as an X-ray transient by MAXI/GCS. Here, we analyze ASAS-SN and Asteroid Terrestrial-impact…
Genesis and Impulsive Evolution of the 2017 September 10 Coronal Mass Ejection
Veronig, Astrid M.; Temmer, Manuela; Dissauer, Karin +7 more
The X8.2 event of 2017 September 10 provides unique observations to study the genesis, magnetic morphology, and impulsive dynamics of a very fast coronal mass ejection (CME). Combining GOES-16/SUVI and SDO/AIA EUV imagery, we identify a hot (T ≈ 10-15 MK) bright rim around a quickly expanding cavity, embedded inside a much larger CME shell (T ≈ 1-…