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Planetary materials orbiting white dwarf stars reveal the ultimate fate of the planets of the Solar System and all known transiting exoplanets. Observed metal pollution and infrared excesses from debris disks support that planetary systems…

Earth and Planetary Astrophysics · Physics 2020-10-14 Keaton J. Bell

We present spectroscopic stellar parameters for the complete target list of 164 evolved stars from the Pan-Pacific Planet Search, a five-year radial velocity campaign using the 3.9m Anglo-Australian Telescope. For 87 of these bright giants,…

Solar and Stellar Astrophysics · Physics 2016-07-06 Robert A. Wittenmyer , Fan Liu , Liang Wang , Luca Casagrande , John Asher Johnson , C. G. Tinney

In anticipation of the VLT/SPHERE planet imager guaranteed time programs, we have conducted a preparatory survey of 86 stars between 2009 and 2013 in order to identify new faint comoving companions to ultimately carry out a comprehensive…

Given the very close proximity of their habitable zones, brown dwarfs represent high-value targets in the search for nearby transiting habitable planets that may be suitable for follow-up occultation spectroscopy. In this paper we develop…

We report the results of our search of planet candidates in Open Clusters and Young Stellar Associations based on the TESS Objects of Interest Catalog. We find one confirmed planet, one promising candidate, one brown dwarf, and three…

Earth and Planetary Astrophysics · Physics 2022-06-22 Qinghui Sun , Sharon Xuesong Wang , Tianjun Gan , Andrew W. Mann

The Gl 581 planetary system has generated wide interest, because its 4 planets include both the lowest mass planet known around a main sequence star other than the Sun and the first super-Earth planet in the habitable zone of its star. A…

In this paper we report the current status of a new research program. The primary goal of the "Vanishing & Appearing Sources during a Century of Observations" (VASCO) project is to search for vanishing and appearing sources using existing…

Exoplanetary science has reached a historic moment. The James Webb Space Telescope will be capable of probing the atmospheres of rocky planets, and perhaps even search for biologically produced gases. However this is contingent on…

We present the results of the most comprehensive survey of the Galactic plane in very high-energy (VHE) gamma-rays, including a public release of Galactic sky maps, a catalog of VHE sources, and the discovery of 16 new sources of VHE…

High Energy Astrophysical Phenomena · Physics 2018-04-18 H. E. S. S. Collaboration

We present observations of microlensing event MACHO-98-BLG-35 which reached a peak magnification factor of almost 80. These observations by the Microlensing Planet Search (MPS) and the MOA Collaborations place strong constraints on the…

We investigate the prospects of indirect and direct dark matter searches within the minimal supersymmetric standard model with nine parameters (MSSM-9). These nine parameters include three gaugino masses, Higgs, slepton and squark masses,…

High Energy Physics - Phenomenology · Physics 2015-10-13 Maria Eugenia Cabrera Catalan , Shin'ichiro Ando , Christoph Weniger , Fabio Zandanel

Several planet-search groups have acquired a great deal of data in the form of time-series spectra of several hundred nearby stars with time baselines of over a decade. While binary star detections are generally not the goal of these…

Solar and Stellar Astrophysics · Physics 2015-12-16 Kevin Gullikson , Michael Endl , William D. Cochran , Phillip J. MacQueen

We present the results of a systematic Milky Way satellite search performed across an array of publicly available wide-area photometric surveys. Our aim is to complement previous searches by widening the parameter space covered.…

Astrophysics of Galaxies · Physics 2019-01-28 G. Torrealba , V. Belokurov , S. E. Koposov

Unexpected clustering in the orbital elements of minor bodies beyond the Kuiper belt has led to speculations that our solar system actually hosts nine planets, the eight established plus a hypothetical "Planet Nine". Several recent studies…

Earth and Planetary Astrophysics · Physics 2018-01-31 Linn E. J. Eriksson , Alexander J. Mustill , Anders Johansen

We have carried out a search for the 2.14 micron spectroscopic signature of the close orbiting extrasolar giant planet, HD 179949b. High cadence time series spectra were obtained with the CRIRES spectrograph at VLT1 on two closely separated…

Transiting planets have greatly expanded and diversified the exoplanet field. These planets provide greater access to characterization of exoplanet atmospheres and structure. The Kepler mission has been particularly successful in expanding…

Earth and Planetary Astrophysics · Physics 2015-06-15 Stephen R. Kane , Thomas Barclay , Dawn M. Gelino

We significantly constrain the sky position, distance, and mass of a possible additional, distant planet in the solar system by examining its influence on the distance between Earth and the Cassini Spacecraft. Our preferred region is…

Earth and Planetary Astrophysics · Physics 2016-10-05 Matthew J. Holman , Matthew J. Payne

We aim to spectroscopically confirm the nature of VVV-J181258.71-314346.7, a candidate counterpart to the unassociated gamma-ray source 4FGLJ1812.8-3144. This object was selected based on its near-infrared photometric properties and…

We present a search for galaxies at 7.6<z<9.8 using the latest HST WFC3 near-infrared data, based on the Lyman-break technique. We search for galaxies which have large (Y-J) colours (the "Y-drops") on account of the Lyman-alpha forest…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Silvio Lorenzoni , Andrew Bunker , Stephen Wilkins , Elizabeth Stanway , Matt Jarvis , Joseph Caruana
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