Results 101 to 110 of about 1,347 (178)

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

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

On the detectability of starspot magnetic fields

The Astrophysical Journal, 1979
A starspot is here considered as the surface manifestation of a submerged magnetic dipole. It seems likely that in red dwarfs, the dipole is generated by dynamo action within the outer convection zone. As a result, a starspot-associated dipole is highly decentered.
openaire   +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

Starspots as tracers of differential surface rotation.

, 2002
Differential rotation is a key ingredient in theories of stellar magnetic field generation. The solar surface differential rotation was initially discovered via the simple method of tracking the rotation rates of individual starspots at different ...
Cameron, Andrew Collier, Cameron, Andrew Collier; id_orcid   +1 more
core   +2 more sources

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

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

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

Probing the magnetic fields of starspots with transit mapping

Context. Starspots, regions of strong magnetic fields, serve as indicators of stellar activity and the dynamo mechanism at play in the interior of stars. The magnetic fields of main-sequence stars play a crucial role in driving stellar activity.
Alexandre Araújo, Adriana Valio, Fabian Menezes   +2 more
core   +1 more source

Formation of starspots in self-consistent global dynamo models: Polar spots on cool stars

, 2014
Context. Observations of cool stars reveal dark spot-like features on their surfaces. Compared to sunspots, starspots can be bigger or cover a larger fraction of the stellar surface.
Christensen, Ulrich R., Thomas Gastine, Ansgar Reiners, Yadav, R., Yadav, Rakesh K., Reiners, Ansgar, Rakesh K. Yadav, Gastine, Thomas, Ulrich R. Christensen, Christensen, U., Reiners, A., Gastine, T.   +11 more
core   +1 more source