Stellar rotation periods from K2 Campaigns 0-18 — Evidence for rotation period bimodality and simultaneous variability decrease. (arXiv:2001.08214v1 [astro-ph.SR]) <a href="http://arxiv.org/find/astro-ph/1/au:+Reinhold_T/0/1/0/all/0/1">Timo Reinhold</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Hekker_S/0/1/0/all/0/1">Saskia Hekker</a> Rotation period measurements of stars observed with the Kepler mission have revealed a lack of stars at intermediate rotation periods, accompanied by a decrease of photometric variability. Whether this so-called […]

Peak-Luminosity/Decline-Rate Relationship for Tidal Disruption Events. (arXiv:2001.08215v1 [astro-ph.HE]) <a href="http://arxiv.org/find/astro-ph/1/au:+Hinkle_J/0/1/0/all/0/1">Jason T. Hinkle</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Holoien_T/0/1/0/all/0/1">Thomas W.-S. Holoien</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Shappee_B/0/1/0/all/0/1">Benjamin. J. Shappee</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Auchettl_K/0/1/0/all/0/1">Katie Auchettl</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kochanek_C/0/1/0/all/0/1">Christopher S. Kochanek</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Stanek_K/0/1/0/all/0/1">K. Z. Stanek</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Payne_A/0/1/0/all/0/1">Anna V. Payne</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Thompson_T/0/1/0/all/0/1">Todd A. Thompson</a> We compare the luminosity, radius, and temperature evolution of the UV/optical blackbodies for fifteen well-observed tidal […]

An Extreme X-ray Variability Event of a Weak-Line Quasar. (arXiv:2001.08216v1 [astro-ph.GA]) <a href="http://arxiv.org/find/astro-ph/1/au:+Ni_Q/0/1/0/all/0/1">Qingling Ni</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Brandt_W/0/1/0/all/0/1">W. N. Brandt</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Yi_W/0/1/0/all/0/1">W. Yi</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Luo_B/0/1/0/all/0/1">B. Luo</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Timlin_J/0/1/0/all/0/1">J. D. Timlin III</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Hall_P/0/1/0/all/0/1">P. B. Hall</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Liu_H/0/1/0/all/0/1">Hezhen Liu</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Plotkin_R/0/1/0/all/0/1">R. M. Plotkin</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Shemmer_O/0/1/0/all/0/1">O. Shemmer</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Vito_F/0/1/0/all/0/1">F. Vito</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Wu_J/0/1/0/all/0/1">Jianfeng Wu</a> We report the discovery of an […]

Primordial black holes as dark matter and gravitational waves from single-field polynomial inflation. (arXiv:2001.08220v1 [astro-ph.CO]) <a href="http://arxiv.org/find/astro-ph/1/au:+Ballesteros_G/0/1/0/all/0/1">Guillermo Ballesteros</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Rey_J/0/1/0/all/0/1">Juli&#xe1;n Rey</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Taoso_M/0/1/0/all/0/1">Marco Taoso</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Urbano_A/0/1/0/all/0/1">Alfredo Urbano</a> We consider the possibility that the majority of dark matter in our Universe consists of black holes of primordial origin. We determine the conditions under which such black […]

Discovering novae in early-type galaxies with MUSE: A chance find in NGC 1404, and twelve more candidates from an archival search. (arXiv:2001.08221v1 [astro-ph.GA]) <a href="http://arxiv.org/find/astro-ph/1/au:+Smith_R/0/1/0/all/0/1">Russell J. Smith</a> (CEA, Durham) I report the discovery of a transient broad-H$alpha$ point source in the outskirts of the giant elliptical galaxy NGC 1404, discovered in archival observations taken with […]

Constraining the origin of the planetary debris surrounding ZTF J0139+5245 through rotational fission of a triaxial asteroid. (arXiv:2001.08223v1 [astro-ph.EP]) <a href="http://arxiv.org/find/astro-ph/1/au:+Veras_D/0/1/0/all/0/1">Dimitri Veras</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+McDonald_C/0/1/0/all/0/1">Catriona H. McDonald</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Makarov_V/0/1/0/all/0/1">Valeri V. Makarov</a> White dwarfs containing orbiting planetesimals or their debris represent crucial benchmarks by which theoretical investigations of post-main-sequence planetary systems may be calibrated. The photometric transit […]

A multiplicity study of transiting exoplanet host stars. I. High-contrast imaging with VLT/SPHERE. (arXiv:2001.08224v1 [astro-ph.EP]) <a href="http://arxiv.org/find/astro-ph/1/au:+Bohn_A/0/1/0/all/0/1">A. J. Bohn</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Southworth_J/0/1/0/all/0/1">J. Southworth</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ginski_C/0/1/0/all/0/1">C. Ginski</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kenworthy_M/0/1/0/all/0/1">M. A. Kenworthy</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Maxted_P/0/1/0/all/0/1">P. F. L. Maxted</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Evans_D/0/1/0/all/0/1">D. F. Evans</a> We study the multiplicity of host stars to known transiting extra-solar planets to test competing theories on […]

A multiplicity study of transiting exoplanet host stars. II. Revised properties of transiting planetary systems with companions. (arXiv:2001.08225v1 [astro-ph.EP]) <a href="http://arxiv.org/find/astro-ph/1/au:+Southworth_J/0/1/0/all/0/1">J. Southworth</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Bohn_A/0/1/0/all/0/1">A. J. Bohn</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kenworthy_M/0/1/0/all/0/1">M. A. Kenworthy</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ginski_C/0/1/0/all/0/1">C. Ginski</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Mancini_L/0/1/0/all/0/1">L. Mancini</a> We perform a detailed study of six transiting planetary systems with relatively bright stars close enough to affect observations […]

Abundances in the Milky Way across five nucleosynthetic channels from 4 million LAMOST stars. (arXiv:2001.08227v1 [astro-ph.SR]) <a href="http://arxiv.org/find/astro-ph/1/au:+Wheeler_A/0/1/0/all/0/1">Adam Wheeler</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ness_M/0/1/0/all/0/1">Melissa Ness</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Buder_S/0/1/0/all/0/1">Sven Buder</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Bland_Hawthorn_J/0/1/0/all/0/1">Joss Bland-Hawthorn</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Silva_G/0/1/0/all/0/1">Gayandhi De Silva</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kos_J/0/1/0/all/0/1">Janez Kos</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Lewis_G/0/1/0/all/0/1">Geraint F. Lewis</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Martell_S/0/1/0/all/0/1">Sarah Martell</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Sharma_S/0/1/0/all/0/1">Sanjib Sharma</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Simpson_J/0/1/0/all/0/1">Jeffrey D. Simpson</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Zucker_D/0/1/0/all/0/1">D. B. Zucker</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Zwitter_T/0/1/0/all/0/1">Thoma&#x17e; […]

Search for L5 Earth Trojans with DECam. (arXiv:2001.08229v1 [astro-ph.EP]) <a href="http://arxiv.org/find/astro-ph/1/au:+Markwardt_L/0/1/0/all/0/1">Larissa Markwardt</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Gerdes_D/0/1/0/all/0/1">David W. Gerdes</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Malhotra_R/0/1/0/all/0/1">Renu Malhotra</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Becker_J/0/1/0/all/0/1">Juliette C. Becker</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Hamilton_S/0/1/0/all/0/1">Stephanie J. Hamilton</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Adams_F/0/1/0/all/0/1">Fred C. Adams</a> Most of the major planets in the Solar System support populations of co-orbiting bodies, known as Trojans, at their L4 and L5 Lagrange points. […]

Search for decaying heavy dark matter in an effective interaction framework: a comparison of $gamma$-ray and radio observations. (arXiv:2001.08235v1 [hep-ph]) <a href="http://arxiv.org/find/hep-ph/1/au:+Ghosh_A/0/1/0/all/0/1">Avirup Ghosh</a>, <a href="http://arxiv.org/find/hep-ph/1/au:+Kar_A/0/1/0/all/0/1">Arpan Kar</a>, <a href="http://arxiv.org/find/hep-ph/1/au:+Mukhopadhyaya_B/0/1/0/all/0/1">Biswarup Mukhopadhyaya</a> We investigate and compare the possibilities of observing decaying dark matter (DM) in $gamma$-ray and radio telescopes. The special emphasise of the study is on a […]

Lyman Continuum Escape Fraction in Ly$alpha$ Emitters at $zsimeq3.1$. (arXiv:2001.08241v1 [astro-ph.GA]) <a href="http://arxiv.org/find/astro-ph/1/au:+Bian_F/0/1/0/all/0/1">Fuyan Bian</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Fan_X/0/1/0/all/0/1">Xiaohui Fan</a> We measure the LyC escape fraction in 54 faint Lyman Alpha Emitters (LAEs) at $zsimeq3.1$ in the GOODS-South field. With the average magnitude of $R=26.7$ AB ($M_{UV}=-18.8$, $Lsimeq0.1L^*$), these galaxies represent a population of compact young dwarf galaxies. […]

Empirical calibration of the reddening maps in the Magellanic Clouds. (arXiv:2001.08242v1 [astro-ph.GA]) <a href="http://arxiv.org/find/astro-ph/1/au:+Gorski_M/0/1/0/all/0/1">Marek Gorski</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Zgirski_B/0/1/0/all/0/1">Bartlomiej Zgirski</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Pietrzynski_G/0/1/0/all/0/1">Grzegorz Pietrzynski</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Gieren_W/0/1/0/all/0/1">Wolfgang Gieren</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Wielgorski_P/0/1/0/all/0/1">Piotr Wielgorski</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Graczyk_D/0/1/0/all/0/1">Dariusz Graczyk</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kudritzki_R/0/1/0/all/0/1">Rolf-Peter Kudritzki</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Pilecki_B/0/1/0/all/0/1">Bogumil Pilecki</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Narloch_W/0/1/0/all/0/1">Weronika Narloch</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Karczmarek_P/0/1/0/all/0/1">Paulina Karczmarek</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Suchomska_K/0/1/0/all/0/1">Ksenia Suchomska</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Taormina_M/0/1/0/all/0/1">Monica Taormina</a> We present reddening maps of the Large […]

X-CIGALE: fitting AGN/galaxy SEDs from X-ray to infrared. (arXiv:2001.08263v1 [astro-ph.GA]) <a href="http://arxiv.org/find/astro-ph/1/au:+Yang_G/0/1/0/all/0/1">Guang Yang</a> (Texas A&amp;M), <a href="http://arxiv.org/find/astro-ph/1/au:+Boquien_M/0/1/0/all/0/1">M. Boquien</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Buat_V/0/1/0/all/0/1">V. Buat</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Burgarella_D/0/1/0/all/0/1">D. Burgarella</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ciesla_L/0/1/0/all/0/1">L. Ciesla</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Duras_F/0/1/0/all/0/1">F. Duras</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Stalevski_M/0/1/0/all/0/1">M. Stalevski</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Brandt_W/0/1/0/all/0/1">W. N. Brandt</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Papovich_C/0/1/0/all/0/1">C. Papovich</a> CIGALE is a powerful multiwavelength spectral energy distribution (SED) fitting code for extragalactic studies. However, […]

Searching for central stars of planetary nebulae in Gaia DR2. (arXiv:2001.08266v1 [astro-ph.SR]) <a href="http://arxiv.org/find/astro-ph/1/au:+Chornay_N/0/1/0/all/0/1">N. Chornay</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Walton_N/0/1/0/all/0/1">N. A. Walton</a> Context: Accurate distance measurements are fundamental to the study of Planetary Nebulae (PNe) but have long been elusive. The most accurate and model-independent distance measurements for galactic PNe come from the trigonometric parallaxes of their central […]

Humps and bumps: The effects of shocks on the optical light curves of fundamental-mode RR Lyrae stars. (arXiv:2001.08272v1 [astro-ph.SR]) <a href="http://arxiv.org/find/astro-ph/1/au:+Prudil_Z/0/1/0/all/0/1">Z. Prudil</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Dekany_I/0/1/0/all/0/1">I. D&#xe9;k&#xe1;ny</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Smolec_R/0/1/0/all/0/1">R. Smolec</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Catelan_M/0/1/0/all/0/1">M. Catelan</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Grebel_E/0/1/0/all/0/1">E. K. Grebel</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kunder_A/0/1/0/all/0/1">A. Kunder</a> We present the most extended and homogeneous study carried out so far of the main and early […]

LECX: a cubesat experiment to detect and localize cosmic explosions in hard X rays. (arXiv:2001.08278v1 [astro-ph.IM]) <a href="http://arxiv.org/find/astro-ph/1/au:+Braga_J/0/1/0/all/0/1">J. Braga</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Durao_O/0/1/0/all/0/1">O.S.C. Durao</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Castro_M/0/1/0/all/0/1">M. Castro</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+DAmico_F/0/1/0/all/0/1">F. D&#x27;Amico</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Stecchini_P/0/1/0/all/0/1">Pe.E. Stecchini</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Amirabile_S/0/1/0/all/0/1">S. Amirabile</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Blanco_F/0/1/0/all/0/1">F. Gonzalez Blanco</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Strauss_C/0/1/0/all/0/1">C. Strauss</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Silva_W/0/1/0/all/0/1">W. Silva</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Schad_V/0/1/0/all/0/1">V. R. Schad</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Reitano_L/0/1/0/all/0/1">L. A. Reitano</a> With the advent […]