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Dusty Starbursts and the Formation of Elliptical Galaxies: A SCUBA-2 Survey of a z = 1.46 Cluster
Thomson, A. P.; Smail, Ian; Swinbank, A. M. +8 more
We report the results of a deep SCUBA-2 850 and 450 µm survey for dust-obscured ultra-/luminous infrared galaxies (U/LIRGs) in the field of the z = 1.46 cluster XCS J2215.9-1738. We detect a striking overdensity of submillimeter sources coincident with the core of this cluster: ∼3-4 × higher than expected in a blank field. We use the likely …
Photoabsorption cross-section measurements of 32S, 33S, 34S, and 36S sulfur dioxide from 190 to 220 nm
Endo, Yoshiaki; Danielache, Sebastian O.; Ueno, Yuichiro +4 more
The ultraviolet absorption cross sections of the SO2 isotopologues are essential to understanding the photochemical fractionation of sulfur isotopes in planetary atmospheres. We present measurements of the absorption cross sections of 32SO2, 33SO2, 34SO2, and 36
The Dust Attenuation Curve versus Stellar Mass for Emission Line Galaxies at z ~ 2
Trump, Jonathan R.; Schneider, Donald P.; Bridge, Joanna +8 more
We derive the mean wavelength dependence of stellar attenuation in a sample of 239 high redshift (1.90\lt z\lt 2.35) galaxies selected via Hubble Space Telescope WFC3 IR grism observations of their rest-frame optical emission lines. Our analysis indicates that the average reddening law follows a form similar to that derived by Calzetti et al. for …
Hubble Space Telescope search for the transit of the Earth-mass exoplanet α Centauri B b
Chaplin, William J.; Seager, Sara; Günther, Maximilian N. +13 more
Results from exoplanet surveys indicate that small planets (super-Earth size and below) are abundant in our Galaxy. However, little is known about their interiors and atmospheres. There is therefore a need to find small planets transiting bright stars, which would enable a detailed characterization of this population of objects. We present the res…
Hierarchical star formation across the ring galaxy NGC 6503
Gouliermis, Dimitrios A.; Grebel, Eva K.; Smith, Linda J. +25 more
We present a detailed clustering analysis of the young stellar population across the star-forming ring galaxy NGC 6503, based on the deep Hubble Space Telescope photometry obtained with the Legacy ExtraGalactic UV Survey. We apply a contour-based map analysis technique and identify in the stellar surface density map 244 distinct star-forming struc…
One Thousand New Dwarf Novae from the OGLE Survey
Soszyński, I.; Udalski, A.; Szymański, M. K. +7 more
We present one of the largest collections of dwarf novae (DNe) containing 1091 objects that have been discovered in the long-term photometric data from the Optical Gravitational Lensing Experiment (OGLE) survey. They were found in the OGLE fields toward the Galactic bulge and the Magellanic Clouds. We analyze basic photometric properties of all sy…
Coordinated Hubble Space Telescope and Venus Express Observations of Venus' upper cloud deck
Bertaux, Jean-Loup; Marcq, Emmanuel; Wilson, Colin +10 more
Hubble Space Telescope Imaging Spectrograph (HST/STIS) UV observations of Venus' upper cloud tops were obtained between 20N and 40S latitude on December 28, 2010; January 22, 2011 and January 27, 2011 in coordination with the Venus Express (VEx) mission. The high spectral (0.27 nm) and spatial (40-60 km/pixel) resolution HST/STIS data provide the …
Large-scale Contraction and Subsequent Disruption of Coronal Loops During Various Phases of the M6.2 Flare Associated with the Confined Flux Rope Eruption
Kushwaha, Upendra; Joshi, Bhuwan; Veronig, Astrid M. +1 more
We investigate evolutionary phases of an M6.2 flare and the associated confined eruption of a prominence. The pre-flare phase exhibits spectacular large-scale contraction of overlying extreme ultraviolet (EUV) coronal loops during which the loop system was subjected to an altitude decrease of ∼20 Mm (40% of the initial height) for an extended span…
High-lying OH Absorption, [C II] Deficits, and Extreme L FIR/M H2 Ratios in Galaxies
Lutz, D.; Genzel, R.; Poglitsch, A. +22 more
Herschel/PACS observations of 29 local (ultra)luminous infrared galaxies, including both starburst and active galactic nucleus (AGN) dominated sources as diagnosed in the mid-infrared/optical, show that the equivalent width of the absorbing OH 65 µm Π3/2 J = 9/2-7/2 line (W eq(OH65)) with lower level energy E low
Driving Solar Spicules and Jets with Magnetohydrodynamic Turbulence: Testing a Persistent Idea
Cranmer, Steven R.; Woolsey, Lauren N.
The solar chromosphere contains thin, highly dynamic strands of plasma known as spicules. Recently, it has been suggested that the smallest and fastest (Type II) spicules are identical to intermittent jets observed by the Interface Region Imaging Spectrograph. These jets appear to expand out along open magnetic field lines rooted in unipolar netwo…