Results 91 to 100 of about 904 (176)

Learning about the latitudinal distribution of starspots through the periodogram analysis of photometric data

EPJ Web of Conferences, 2017
Starspots are cooler and darker than the stellar surface. Therefore, the emitted flux of a star changes when spots are visible on its surface. The presence of spots together with the stellar rotation leads to a periodic modulation on the light curve.
Santos Ângela R. G., Cunha Margarida S., Avelino Pedro P., García Rafael A., Mathur Savita   +4 more
doaj   +1 more source

The homogeneous characterisation of Ariel host stars. [PDF]

Exp Astron (Dordr), 2022
Danielski C, Brucalassi A, Benatti S, Campante T, Delgado-Mena E, Rainer M, Sacco G, Adibekyan V, Biazzo K, Bossini D, Bruno G, Casali G, Kabath P, Magrini L, Micela G, Morello G, Palladino P, Sanna N, Sarkar S, Sousa S, Tsantaki M, Turrini D, Van der Swaelmen M.   +22 more
europepmc   +1 more source

An exomoon survey of 70 cool giant exoplanets and the new candidate Kepler-1708 b-i. [PDF]

Nat Astron, 2022
Kipping D, Bryson S, Burke C, Christiansen J, Hardegree-Ullman K, Quarles B, Hansen B, Szulágyi J, Teachey A.   +8 more
europepmc   +1 more source

Polka-dotted Stars. II. Starspots and Obliquities of Kepler-17 and Kepler-63

The Astrophysical Journal
Starspots trace stellar magnetic activity and affect both stellar evolution and exoplanet characterization. While occultation-based spot studies have been applied to individual systems, comparative analyses remain limited.
Sabina Sagynbayeva, Will M. Farr
doaj   +1 more source

Extreme energetic particle events by superflare-asssociated CMEs from solar-like stars. [PDF]

Sci Adv, 2022
Hu J, Airapetian VS, Li G, Zank G, Jin M.   +4 more
europepmc   +1 more source

Computational starspot photometry of contact binary stars

, 2007
Starspots are not well understood for contact binary star systems. The following properties of spots were systematically investigated: temperature, radius, colatitude, and longitude. Spots were modeled on an AE Phe like contact binary system.
Hill, Robert L.
core  

The Effect of Starspots on Spectroscopic Age and Mass Estimates of Nonaccreting T Tauri Stars in the Taurus–Auriga Star-forming Region

The Astrophysical Journal
Accurate age and mass determinations for young pre-main-sequence stars are made challenging by the presence of large-scale starspots. We present results from a near-infrared spectroscopic survey of 10 T-Tauri Stars in Taurus-Auriga that characterize spot-
Facundo Pérez Paolino, Jeffrey S. Bary, Lynne A. Hillenbrand, Madison Markham   +3 more
doaj   +1 more source

A planet within the debris disk around the pre-main-sequence star AU Microscopii. [PDF]

Nature, 2020
Plavchan P, Barclay T, Gagné J, Gao P, Cale B, Matzko W, Dragomir D, Quinn S, Feliz D, Stassun K, Crossfield IJM, Berardo DA, Latham DW, Tieu B, Anglada-Escudé G, Ricker G, Vanderspek R, Seager S, Winn JN, Jenkins JM, Rinehart S, Krishnamurthy A, Dynes S, Doty J, Adams F, Afanasev DA, Beichman C, Bottom M, Bowler BP, Brinkworth C, Brown CJ, Cancino A, Ciardi DR, Clampin M, Clark JT, Collins K, Davison C, Foreman-Mackey D, Furlan E, Gaidos EJ, Geneser C, Giddens F, Gilbert E, Hall R, Hellier C, Henry T, Horner J, Howard AW, Huang C, Huber J, Kane SR, Kenworthy M, Kielkopf J, Kipping D, Klenke C, Kruse E, Latouf N, Lowrance P, Mennesson B, Mengel M, Mills SM, Morton T, Narita N, Newton E, Nishimoto A, Okumura J, Palle E, Pepper J, Quintana EV, Roberge A, Roccatagliata V, Schlieder JE, Tanner A, Teske J, Tinney CG, Vanderburg A, von Braun K, Walp B, Wang J, Wang SX, Weigand D, White R, Wittenmyer RA, Wright DJ, Youngblood A, Zhang H, Zilberman P.   +86 more
europepmc   +1 more source

Data models, representation and adequacy-for-purpose. [PDF]

Eur J Philos Sci, 2021
Bokulich A, Parker W.
europepmc   +1 more source

Multiwavelength Campaign Observations of a Young Solar-type Star, EK Draconis. III. Comparison between Starspot Mapping, Zeeman Doppler Imaging, and Multiwavelength Variability

The Astrophysical Journal
Recent simultaneous multiwavelength observations of a nearby young solar-type star EK Draconis (EK Dra) in the optical, H α spectrum, and X-ray, have provided evidence for stellar prominence eruptions associated with superflares.
Kai Ikuta, Kosuke Namekata, Pascal Petit, Vladimir S. Airapetian, Hiroyuki Maehara, Yuta Notsu, Aline A. Vidotto, Keith Gendreau, Sandra V. Jeffers, Stephen Marsden, Julien Morin, Coralie Neiner, Rishi R. Paudel, Daisaku Nogami, Kazunari Shibata   +14 more
doaj   +1 more source