Results 101 to 110 of about 173,010 (211)

Inhomogeneity in the Local ISM and Its Relation to the Heliosphere. [PDF]

Space Sci Rev, 2022
Linsky J, Redfield S, Ryder D, Moebius E.   +3 more
europepmc   +1 more source

IUE spectra of F and late A stars [PDF]

The International Ultraviolet Explorer (IUE) spectra of alpha CMi (F5 IV-V), beta Cas (F2 IV), alpha Car (F0 Ib), and gamma Boo (A7 III) in the context of the question as to whether chromospheres disappear in the early F late A portions of the ...
Linsky, J. L., Marstad, N. C.
core   +1 more source

HST Observations of Chromospheres in Metal Deficient Field Giants

, 2007
HST high resolution spectra of metal-deficient field giants more than double the stars in previous studies, span about 3 magnitudes on the red giant branch, and sample an abundance range [Fe/H]= -1 to -3.
A. K. Dupree, Barnes T. G., Bates B., Cousins A. W. J., Gondoin P., Graeme H. Smith, Gratton R. G., Johnson H. L., Kemp S. N., Kurucz R. L., Lyons M. A., Mallia E. A., Murray C. A., Pizzolato N., Rutten R. G. M., Sanders W. L., Schrijver C. J., Seaton M. J., Strassmeier K. G., Timothy Q. Li   +19 more
core   +1 more source

Stellar rotation as a controller of coronae and chromospheres of giant stars [PDF]

, 1983
David F. Gray
openalex   +1 more source

The Sun in Time: Age, Rotation, and Magnetic Activity of the Sun and Solar-type Stars and Effects on Hosted Planets

, 2009
Multi-wavelength studies of solar analogs (G0-5 V stars) with ages from ~50 Myr to 9 Gyr have been carried out as part of the "Sun in Time" program for nearly 20 yrs.
Edward F. Guinan, Feltzing, Grießmeier, Kulikov, Messina, Scott G. Engle   +5 more
core   +1 more source

CO molecule in transition region between chromosphere and cool stellar wind: A new probe on the outer atmospheres of cool luminous stars [PDF]

, 1987
Takashi Tsuji
openalex   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

Doppler-shifted Signatures in the Chromospheric Line Profiles of II Pegasi

The Astrophysical Journal
Stellar flares are frequently accompanied by prominence eruptions, coronal mass ejections (CMEs), and other forms of plasma motion. Based on the long-term high-resolution spectroscopic monitoring data set of the RS CVn-type star II Pegasi (II Peg), we ...
Dongtao Cao, Shenghong Gu
doaj   +1 more source

The Radiation Environment of Exoplanet Atmospheres

Challenges, 2014
Exoplanets are born and evolve in the radiation and particle environment created by their host star. The host star’s optical and infrared radiation heats the exoplanet’s lower atmosphere and surface, while the ultraviolet, extreme ultraviolet and X ...
Jeffrey L. Linsky
doaj   +1 more source

The [Fe/H] Dependence on the Ca {\sc ii}-$M_V$ Relationship

, 2012
We examined the Wilson-Bappu effect, a relationship between the absolute magnitude of the star, $M_V$, and the logarithm of the Ca {\sc ii} emission width, $W_0$, over the largest $M_V$ range to date, +13 to -5, covering M-dwarfs to type Ia supergiants ...
Gomez, Thomas, Pancino, Elena, Wallerstein, George   +2 more
core   +1 more source