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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…
Multi-viewpoint Coronal Mass Ejection Catalog Based on STEREO COR2 Observations
Vourlidas, Angelos; Stenborg, Guillermo; Balmaceda, Laura A. +1 more
We present the first multi-viewpoint coronal mass ejection (CME) catalog. The events are identified visually in simultaneous total brightness observations from the twin SECCHI/COR2 coronagraphs on board the Solar Terrestrial Relations Observatory mission. The Multi-View CME Catalog differs from past catalogs in three key aspects: (1) all events be…
Interplanetary coronal mass ejection observed at STEREO-A, Mars, comet 67P/Churyumov-Gerasimenko, Saturn, and New Horizons en route to Pluto: Comparison of its Forbush decreases at 1.4, 3.1, and 9.9 AU
Barabash, S.; Krupp, N.; Roussos, E. +48 more
We discuss observations of the journey throughout the Solar System of a large interplanetary coronal mass ejection (ICME) that was ejected at the Sun on 14 October 2014. The ICME hit Mars on 17 October, as observed by the Mars Express, Mars Atmosphere and Volatile EvolutioN Mission (MAVEN), Mars Odyssey, and Mars Science Laboratory (MSL) missions,…
North-South Asymmetries in Earth's Magnetic Field. Effects on High-Latitude Geospace
Reistad, J. P.; Laundal, K. M.; Milan, S. E. +5 more
The solar-wind magnetosphere interaction primarily occurs at altitudes where the dipole component of Earth's magnetic field is dominating. The disturbances that are created in this interaction propagate along magnetic field lines and interact with the ionosphere-thermosphere system. At ionospheric altitudes, the Earth's field deviates significantl…
Angular momentum evolution of galaxies over the past 10 Gyr: a MUSE and KMOS dynamical survey of 400 star-forming galaxies from z = 0.3 to 1.7
Smail, Ian; Alexander, D. M.; Swinbank, A. M. +23 more
We present a MUSE (Multi-Unit Spectroscopic Explorer) and KMOS (K-band Multi-Object Spectrograph) dynamical study 405 star-forming galaxies at redshift z = 0.28-1.65 (median redshift \bar{z} = 0.84). Our sample is representative of the star-forming 'main sequence', with star formation rates of SFR = 0.1-30 M⊙ yr-1 and stellar…
The SCUBA-2 Cosmology Legacy Survey: the nature of bright submm galaxies from 2 deg2 of 850-µm imaging
Bowler, R. A. A.; McLure, R. J.; Dunlop, J. S. +15 more
We present physical properties [redshifts (z), star-formation rates (SFRs) and stellar masses ({M_star})] of bright (S850 ≥ 4 mJy) submm galaxies in the ≃2 deg2 COSMOS and UDS fields selected with SCUBA-2/JCMT. We complete the galaxy identification process for all (≃2000) S/N ≥ 3.5 850-µm sources, but focus our scientif…
A massive, dead disk galaxy in the early Universe
Richard, Johan; Gallazzi, Anna; Zibetti, Stefano +10 more
At redshift z = 2, when the Universe was just three billion years old, half of the most massive galaxies were extremely compact and had already exhausted their fuel for star formation. It is believed that they were formed in intense nuclear starbursts and that they ultimately grew into the most massive local elliptical galaxies seen today, through…