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Searching for cool and cooling X-ray emitting gas in 45 galaxy clusters and groups
Fabian, Andrew C.; Sanders, Jeremy S.; Pinto, Ciro +2 more
We present a spectral analysis of cool and cooling gas in 45 cool-core clusters and groups of galaxies obtained from Reflection Grating Spectrometer (RGS) XMM-Newton observations. The high-resolution spectra show Fe XVII emission in many clusters, which implies the existence of cooling flows. The cooling rates are measured between the bulk intracl…
Spectroscopic Follow-up of Discoveries from the NEOWISE Proper Motion Survey
Cushing, Michael C.; Kirkpatrick, J. Davy; Burgasser, Adam J. +2 more
We present low-resolution near-infrared spectra of discoveries from an all-sky proper motion search conducted using multi-epoch data from the Wide-field Infrared Survey Explorer. Using the data from NEOWISE, along with the AllWISE catalog, Schneider et al. conducted an all-sky proper motion survey to search for nearby objects with high proper moti…
Morphometric evidence of 3.6 Ga glacial valleys and glacial cirques in martian highlands: South of Terra Sabaea
Mercier, Denis; Costard, François; Bouley, Sylvain +2 more
The climate of early Mars remains unclear and the debate is topical. Recently, climatic models have suggested a cold climate during the Noachian/Early Hesperian on Mars, which goes against the wet and warm climate often put forward. The purpose of this study is to seek geomorphologic evidence of this early cold climate. To achieve this, a step-by-…
Searching for environmental effects on galaxy kinematics in groups and clusters at z ∼ 1 from the ORELSE survey
Shen, Lu; Kocevski, Dale D.; Tresse, Laurence +9 more
We present an investigation of the dependence of galaxy kinematics on the environment for a sample of 94 star-forming galaxies at z ∼ 0.9 from the ORELSE survey. ORELSE is a large photometric and spectroscopic campaign dedicated to mapping out and characterizing galaxy properties across a full range of environments in 15 fields containing large-sc…
Gamma-ray emitting narrow-line Seyfert 1 galaxies: Past, present, and future
Paliya, Vaidehi S.
This article reviews our current understanding about
Scaling relations for globular cluster systems in early-type galaxies
Bassino, Lilia P.; Caso, Juan P.; Ennis, Ana I. +1 more
The formation and growth of globular cluster systems (GCSs) is closely related to the evolutionary processes experienced by their host galaxies. In particular, their radial distributions scale with several properties of the galaxies and their haloes. We performed a photometric study, by means of HST/ACS archival data of several intermediate lumino…
Spitzer Transit Follow-up of Planet Candidates from the K2 Mission
Gorjian, Varoujan; Tamura, Motohide; Knutson, Heather A. +21 more
We present precision 4.5 µ {{m}} Spitzer transit photometry of eight planet candidates discovered by the K2 mission: K2-52 b, K2-53 b, EPIC 205084841.01, K2-289 b, K2-174 b, K2-87 b, K2-90 b, and K2-124 b. The sample includes four sub-Neptunes and two sub-Saturns, with radii between 2.6 and 18 {R}\oplus and equilibrium temperatur…
HST Resolves Stars in a Tiny Body Falling on the Dwarf Galaxy DDO 68
Cignoni, M.; Tosi, M.; Calzetti, D. +9 more
We present new Hubble Space Telescope imaging of a stream-like system associated with the dwarf galaxy DDO 68, located in the Lynx-Cancer void at a distance of D ∼ 12.65 Mpc from us. The stream, previously identified in deep Large Binocular Telescope images as a diffuse low surface brightness structure, is resolved into individual stars in the F60…
KELT-22Ab: A Massive, Short-Period Hot Jupiter Transiting a Near-solar Twin
Bieryla, Allyson; Latham, David W.; Berlind, Perry +53 more
We present the discovery of KELT-22Ab, a hot Jupiter from the KELT-South survey. KELT-22Ab transits the moderately bright (V ∼ 11.1) Sun-like G2V star TYC 7518-468-1. The planet has an orbital period of P =1.3866529+/- 0.0000027 days, a radius of {R}P={1.285}-0.071+0.12 {R}J, and a relatively large mass …
JINGLE, a JCMT legacy survey of dust and gas for galaxy evolution studies: II. SCUBA-2 850 µm data reduction and dust flux density catalogues
Lamperti, Isabella; Saintonge, Amélie; Clark, Christopher J. R. +33 more
We present the SCUBA-2 850µm component of JINGLE, the new JCMT large survey for dust and gas in nearby galaxies, which with 193 galaxies is the largest targeted survey of nearby galaxies at 850 µm. We provide details of our SCUBA-2 data reduction pipeline, optimized for slightly extended sources, and including a calibration model adjus…