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WIYN Open Cluster Study LXXX: HDI CCD UBVRI Photometry of the Old Open Cluster NGC 7142 and Comparison to M67
Twarog, Bruce A.; Anthony-Twarog, Barbara J.; Deliyannis, Constantine P. +2 more
We present UBVRI photometry of 8702 stars in a 0°5 × 0°5 field in the direction of NGC 7142, taken with the Half Degree Imager at the WIYN 0.9 m telescope, to improve knowledge of this cluster's basic parameters. Our photometry spans the ranges 10.6-20.4 mag in U, 10.6-22.0 mag in B, 10.0-21.8 mag in V, 9.2-20.7 mag in R, and 8.5-19.9 mag in I. Us…
A super-Earth and a mini-Neptune around Kepler-59
Nesvorný, D.; Roig, F.; Saad-Olivera, X. +2 more
We characterize the radii and masses of the star and planets in the Kepler-59 system, as well as their orbital parameters. The star parameters are determined through a standard spectroscopic analysis, resulting in a mass of 1.359± 0.155 M_⊙ and a radius of 1.367± 0.078 R_⊙. The obtained planetary radii are 1.5± 0.1 R_\oplus for the inner and 2.2± …
Gemini-GRACES high-quality spectra of Kepler evolved stars with transiting planets. I. Detailed characterization of multi-planet systems Kepler-278 and Kepler-391
Almenara, J. M.; Díaz, R. F.; Martioli, E. +10 more
Aims: Kepler-278 and Kepler-391 are two of the three evolved stars known to date on the red giant branch (RGB) to host multiple short-period transiting planets. Moreover, the planets orbiting Kepler-278 and Kepler-391 are among the smallest discovered around RGB stars. Here we present a detailed stellar and planetary characterization of these…
ALMA Observations of the Molecular Clouds in NGC 625
De Looze, Ilse; Cormier, Diane; Faesi, Christopher M. +1 more
We present the highest-resolution (1″) 12CO observations of molecular gas in the dwarf starburst galaxy NGC 625 to date, obtained with Atacama Large Millimeter/submillimeter Array. The molecular gas, which is distributed in discrete clouds within an area of 0.4 kpc2, does not have well-ordered large-scale motions. We measure …
Revisiting the Architecture of the KOI-89 System
Tamayo, Daniel; Masuda, Kento
While high stellar obliquities observed in exoplanetary systems may be attributed to processes that tilt the planetary orbits, it is also possible that they reflect misalignments between protoplanetary disks and stellar spins. This latter hypothesis predicts the presence of coplanar multiplanetary systems misaligned with their central stars. Here …
Chemical and Isotope Composition of Comet 67P/Churyumov-Gerasimenko: The Rosetta-Philae Mission Results Reviewed in the Context of Cosmogony and Cosmochemistry
Dorofeeva, V. A.
The studies of the composition and structure of comet 67P/Churyumov-Gerasimenko—a short-period comet of Jupiter's family—which was an object of the recent Rosetta-Philae space mission, yielded results unique in many respects, since it was the first time that a comet was investigated in situ for a long stretch of time under varying conditions of in…
Mars' Ionospheric Interaction With Comet C/2013 A1 Siding Spring's Coma at Their Closest Approach as Seen by Mars Express
Leblanc, François; Cowley, Stanley W. H.; Cardesín-Moinelo, Alejandro +9 more
On 19 October 2014, Mars experienced a close encounter with Comet C/2013 A1 Siding Spring. Using data from the Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) on board Mars Express (MEX), we assess the interaction of the Martian ionosphere with the comet's coma and possibly magnetic tail during the orbit of their closest approa…
Simulations of satellite tidal debris in the Milky Way halo
Just, Andreas; Macciò, Andrea V.; Mazzarini, Matteo +1 more
Aims: We study the distribution of the stellar and dark matter debris of the Milky Way satellites.
Methods: For the first time we address the question of the tidal disruption of satellites in simulations by utilising simultaneously (a) a realistic set of orbits extracted from cosmological simulations; (b) a three-component host galaxy wi…
J1110+4817 - a compact symmetric object candidate revisited
Krezinger, Máté; Frey, Sándor; An, Tao +2 more
Compact symmetric objects (CSOs) are radio-emitting active galactic nuclei (AGNs) typically with a double-lobed radio structure confined to within 1 kpc. CSOs represent the earliest evolutionary phase of jetted AGNs. Some of them may eventually evolve into large-scale extended double sources, while others stall within the host galaxy and die out, …
Locating Hot Plasma in Small Flares using Spectroscopic Overlappogram Data from the Hinode EUV Imaging Spectrometer
Reeves, Katharine K.; Lee, Kyoung-Sun; Hara, Hirohisa +6 more
One of the key processes associated with the "standard" flare model is chromospheric evaporation, a process during which plasma heated to high temperatures by energy deposition at the flare footpoints is driven upwards into the corona. Despite several decades of study, a number of open questions remain, including the relationship between plasma pr…