Search Publications
Zodiacal Exoplanets in Time (ZEIT). VII. A Temperate Candidate Super-Earth in the Hyades Cluster
Vanderburg, Andrew; Bieryla, Allyson; Latham, David W. +15 more
Transiting exoplanets in young open clusters present opportunities to study how exoplanets evolve over their lifetimes. Recently, significant progress detecting transiting planets in young open clusters has been made with the K2 mission, but so far all of these transiting cluster planets orbit close to their host stars, so planet evolution can onl…
The Strong Rotation of M5 (NGC 5904) as Seen from the MIKiS Survey of Galactic Globular Clusters
Dalessandro, E.; Valenti, E.; Bellazzini, M. +10 more
In the context of the ESO-VLT Multi-Instrument Kinematic Survey (MIKiS) of Galactic globular clusters (GGCs), we present the line-of-sight rotation curve and velocity dispersion profile of M5 (NGC 5904), as determined from the radial velocity of more than 800 individual stars observed out to 700″ (∼5 half-mass radii) from the center. We found one …
Ultraviolet Detection of the Binary Companion to the Type IIb SN 2001ig
Van Dyk, Schuyler D.; Filippenko, Alexei V.; Ryder, Stuart D. +8 more
We present HST/WFC3 ultraviolet imaging in the F275W and F336W bands of the Type IIb SN 2001ig at an age of more than 14 years. A clear point source is detected at the site of the explosion, with m F275W = 25.39 ± 0.10 and m F336W = 25.88 ± 0.13 mag. Despite weak constraints on both the distance to the host galaxy NGC 7424 an…
Coherent Structures and Spectral Energy Transfer in Turbulent Plasma: A Space-Filter Approach
Sorriso-Valvo, L.; Retinò, A.; Califano, F. +1 more
Plasma turbulence at scales of the order of the ion inertial length is mediated by several mechanisms, including linear wave damping, magnetic reconnection, the formation and dissipation of thin current sheets, and stochastic heating. It is now understood that the presence of localized coherent structures enhances the dissipation channels and the …
A Compact Multi-planet System with a Significantly Misaligned Ultra Short Period Planet
Kristiansen, Martti H.; Omohundro, Mark; Vanderburg, Andrew +20 more
We report the discovery of a compact multi-planet system orbiting the relatively nearby (78 pc) and bright (K = 8.9) K-star, K2-266 (EPIC 248435473). We identify up to six possible planets orbiting K2-266 with estimated periods of P b = 0.66, P .02 = 6.1, P c = 7.8, P d = 14.7, P e = 1…
High-redshift Extremely Red Quasars in X-Rays
Pâris, Isabelle; Strauss, Michael A.; Brandt, William N. +11 more
Quasars may have played a key role in limiting the stellar mass of massive galaxies. Identifying those quasars in the process of removing star formation fuel from their hosts is an exciting ongoing challenge in extragalactic astronomy. In this paper, we present X-ray observations of 11 extremely red quasars (ERQs) with L bol ∼ 1047…
Blue-wing enhancement of the chromospheric Mg II h and k lines in a solar flare
Heinzel, Petr; Shibata, Kazunari; Okamoto, Takenori J. +6 more
We performed coordinated observations of AR 12205, which showed a C-class flare on 2014 November 11, with the Interface Region Imaging Spectrograph (IRIS) and the Domeless Solar Telescope (DST) at Hida Observatory. Using spectral data in the Si IV 1403 Å, C II 1335 Å, and Mg II h and k lines from IRIS and the Ca II K, Ca II 8542 Å, and Hα lines fr…
The Low-luminosity Type IIP Supernova 2016bkv with Early-phase Circumstellar Interaction
Tominaga, Nozomu; Itoh, Ryosuke; Takaki, Katsutoshi +22 more
We present optical and near-infrared observations of a low-luminosity (LL) Type IIP supernova (SN) 2016bkv from the initial rising phase to the plateau phase. Our observations show that the end of the plateau is extended to ≳140 days since the explosion, indicating that this SN takes one of the longest times to finish the plateau phase among Type …
In-orbit performance of the LISA Pathfinder drag-free and attitude control system
Grzymisch, J.; Brandt, N.; Schleicher, A. +5 more
LISA Pathfinder is a technology demonstrator mission that was funded by the European Space Agency and that was launched on December 3, 2015. LISA Pathfinder has been conducting experiments to demonstrate key technologies for the gravitational wave observatory LISA in its operational orbit at the L1 Lagrange point of the Earth-Sun system until fina…
Probing Dark Matter Subhalos in Galaxy Clusters Using Highly Magnified Stars
Dai, Liang; Venumadhav, Tejaswi; Kaurov, Alexander A. +1 more
Luminous stars in background galaxies straddling the lensing caustic of a foreground galaxy cluster can be individually detected due to extreme magnification factors of ∼102-103, as recently observed in deep HST images. We propose a direct method to probe the presence of dark matter subhalos in galaxy clusters by measuring th…