X
Search Filters
Format Format
Subjects Subjects
Subjects Subjects
X
Sort by Item Count (A-Z)
Filter by Count
astronomy & astrophysics (17) 17
ii-k-line (13) 13
chromosphere (8) 8
sun (8) 8
spectra (7) 7
astrophysics (6) 6
emission (6) 6
astrophysics - solar and stellar astrophysics (5) 5
calcium (5) 5
cool stars (5) 5
solar and stellar astrophysics (5) 5
earth and planetary astrophysics (4) 4
main-sequence stars (4) 4
n32150 -physics-astrophysics-solar phenomena (4) 4
physics (4) 4
physics - solar and stellar astrophysics (4) 4
rotation (4) 4
ii k-line (3) 3
ions (3) 3
line: profiles (3) 3
magnetic fields (3) 3
photosphere (3) 3
photospheric magnetic-field (3) 3
sun: chromosphere (3) 3
sun: magnetic fields (3) 3
turbulence (3) 3
velocity (3) 3
ab-aurigae (2) 2
astrophysics - earth and planetary astrophysics (2) 2
atmosphere (2) 2
basal (2) 2
calcium ions (2) 2
cations (2) 2
cycle (2) 2
electron density (2) 2
electron temperature (2) 2
emission analysis (2) 2
emissions (2) 2
extrasolar planets (2) 2
field (2) 2
flux (2) 2
h-alpha (2) 2
h-alpha emission (2) 2
high energy astrophysical phenomena (2) 2
k bu astronomy & astrophysics (2) 2
magnetic flux (2) 2
methods: numerical (2) 2
models (2) 2
n56400 -physics-solar phenomena (2) 2
outer atmosphere (2) 2
outer atmospheres (2) 2
profiles (2) 2
quiet sun (2) 2
solar activity (2) 2
solar chromosphere (2) 2
solar magnetic field (2) 2
solar surface (2) 2
space physics (2) 2
stars (2) 2
stars & galaxies (2) 2
stars : atmospheres (2) 2
stars, late-type (2) 2
stars, rotation (2) 2
stars: activity (2) 2
stars: atmospheres (2) 2
stars: chromospheres (2) 2
stars: late-type (2) 2
stars: magnetic fields (2) 2
stars: mass loss (2) 2
stars: pre-main sequence (2) 2
stars: rotation (2) 2
stellar activity (2) 2
sun: activity (2) 2
t-tauri stars (2) 2
temperature (2) 2
term spectral variability (2) 2
variability (2) 2
absorption (1) 1
abundances (1) 1
accretion disks (1) 1
active phenomena (1) 1
ae stars (1) 1
ae/be stars (1) 1
angular diameters (1) 1
astronomical models (1) 1
astronomy (1) 1
astronomy, astrophysics and cosmology (1) 1
astronomía (1) 1
astrophysics and astroparticles (1) 1
atmospheric models (1) 1
atmospheric oscillations (1) 1
atmospheric sciences (1) 1
azimuthal structures (1) 1
beta-pictoris phenomenon (1) 1
bipolar molecular outflows (1) 1
blue lines (1) 1
brightness changes (1) 1
ca ii k line (1) 1
ca-ii k line (1) 1
ca-ii k-line diagnostics (1) 1
more...
Language Language
Publication Date Publication Date
Click on a bar to filter by decade
Slide to change publication date range


Astrophysical Journal, ISSN 0004-637X, 09/2018, Volume 865, Issue 1, p. 16
Journal Article
Astronomy and Astrophysics, ISSN 0004-6361, 04/2009, Volume 497, Issue 1, pp. 273 - 285
Aims. We analyze observational data from 4 instruments to study the correlations between chromospheric emission, spanning the heights from the temperature... 
Sun: Magnetic fields | Sun: Radio radiation | Sun: Chromosphere | TRANSITION REGION | II-K-LINE | SURFACE DYNAMO | COOL STARS | SUN | Sun: chromosphere | GRAINS | Sun: magnetic fields | ASTRONOMY & ASTROPHYSICS | CORONAL EXPLORER | INTERNETWORK | Sun: radio radiation | SOLAR CHROMOSPHERE | Physics - Solar and Stellar Astrophysics
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 2/1997, Volume 284, Issue 4, pp. 803 - 810
We model high-resolution spectra using a simple radiative transfer analysis to derive projected rotational velocities (u sin i) and macroturbulent velocity... 
Stars: late-type | Turbulence | Stars: magnetic fields | Convection | Stars: rotation | stars, rotation | stars, late-type | stars, magnetic fields | MACROTURBULENCE | MAIN-SEQUENCE STARS | turbulence | II K-LINE | K BU ASTRONOMY & ASTROPHYSICS | convection | STELLAR ROTATION | ASTRONOMY & ASTROPHYSICS | SOLAR-TYPE STARS | SPECTRA | EMISSION | VELOCITIES
Journal Article
ASTRONOMY & ASTROPHYSICS, ISSN 1432-0746, 02/2008, Volume 479, Issue 1, pp. 213 - U113
Context. The heating process that balances the solar chromospheric energy losses has not yet been determined. Conflicting views exist on the source of the... 
VACUUM-TOWER-TELESCOPE | ATMOSPHERIC OSCILLATIONS | sun : chromosphere | PHOTOSPHERIC MAGNETIC-FIELD | SUNS CHROMOSPHERE | II-K-LINE | INTERNETWORK CHROMOSPHERE | ASTRONOMY & ASTROPHYSICS | sun : oscillations | H-ALPHA | K-2V BRIGHT POINTS | SOLAR CHROMOSPHERE | DOT TOMOGRAPHY
Journal Article
Proceedings of the International Astronomical Union, ISSN 1743-9213, 07/2011, Volume 7, Issue 282, pp. 125 - 126
AbstractWe analyse the chromospherical activity of stars with extrasolar planets and search for a possible correlation between the equivalent width of the core... 
Ca II K line | exoplanet | star-planet interaction | Orbits | Extrasolar planets | Stars & galaxies | Astronomy
Conference Proceeding
Space Science Reviews, ISSN 0038-6308, 11/1997, Volume 82, Issue 3, pp. 407 - 450
Journal Article
Astronomy and Astrophysics, ISSN 0004-6361, 10/1996, Volume 314, Issue 2, pp. 465 - 476
Pre-main-sequence stars between 2 and 5M(.) (Herbig Ae/Be stars) possess strong stellar winds and extended chromospheres. The non-radiative heating necessary... 
Stars: pre-main sequence; chromosphere; interior; mass loss; rotation | Turbulence | ROTATING STARS | TERM SPECTRAL VARIABILITY | rotation | II-K-LINE | TURBULENT ENTRAINMENT | ACTIVE PHENOMENA | AE STARS | turbulence | MIXED-LAYER | interior | AB-AURIGAE | ASTRONOMY & ASTROPHYSICS | chromosphere | MERIDIONAL CIRCULATION | mass loss | HERBIG AE/BE STARS | stars, pre-main sequence
Journal Article
Astronomy and Astrophysics, ISSN 0004-6361, 1997, Volume 325, Issue 3, pp. 1115 - 1124
Mt. Wilson Ca II H&K line-core emission fluxes for 215 F-, G-and K-type stars were obtained within at most a few days of the corresponding ROSAT All-Sky Survey... 
Stars: coronae | X-rays: stars | Stars: activity | Stars: chromospheres | Stars: Late-type | ROTATION | stars, late-type | stars, activity | stars, chromospheres | GIANTS | PHOTOSPHERIC MAGNETIC-FIELD | X-rays, stars | II-K-LINE | FLUX | SUN | stars, coronae | STELLAR ACTIVITY | RADIATIVE LOSSES | ASTRONOMY & ASTROPHYSICS | OUTER ATMOSPHERE
Journal Article
ASTRONOMY AND ASTROPHYSICS, ISSN 0004-6361, 03/1997, Volume 319, Issue 1, pp. 176 - 183
Journal Article
Physics and Chemistry of the Earth, Part C: Solar, Terrestrial and Planetary Science, ISSN 1464-1917, 2000, Volume 25, Issue 5-6, pp. 409 - 412
With varying solar activity, the solar VIS, UV, EUV, and X-ray emissions from the chromosphere, transition region, and corona all change, but these variations... 
GEOCHEMISTRY & GEOPHYSICS | OUTER ATMOSPHERES | PHOTOSPHERIC MAGNETIC-FIELD | II-K-LINE | ULTRAVIOLET | COOL STARS | EMISSION
Journal Article
Energy, ISSN 0360-5442, 1993, Volume 18, Issue 12, pp. 1285 - 1295
Friis-Christensen and Lassen report a close correspondence in the last 100 years between average Northern Hemisphere temperatures and changes in the length of... 
LUMINOSITY | ENGINEERING, CHEMICAL | BRIGHTNESS CHANGES | IRRADIANCE | ENERGY & FUELS | SURFACE AIR-TEMPERATURE | MAUNDER MINIMUM | STARS | II K-LINE | EMISSION | CYCLE
Journal Article
ASTRONOMY & ASTROPHYSICS, ISSN 0004-6361, 12/1992, Volume 266, Issue 1, pp. 347 - 359
High resolution, high S/N ratio observations in the K line of Ca II are presented for an unbiased sample of nearby solar type stars (G0-G5 spectral type).... 
ROTATION | CA-II K LINE | PROFILES | STARS, LATE TYPE | STELLAR MODEL CHROMOSPHERES | G-DWARFS | SUBJECT INDEX, STARS, CHROMOSPHERES | SUN | ASTRONOMY & ASTROPHYSICS | HIGH-RESOLUTION | STARS, SUN | ANGULAR DIAMETERS | VISUAL SURFACE BRIGHTNESS | EMISSION | SPECTRA
Journal Article
by FANG, C and HIEI, E and YIN, SY and GAN, WQ
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, ISSN 0004-6264, 1992, Volume 44, Issue 1, pp. 63 - 72
Observations of the Ca II K line profiles for 12 solar flares have been analyzed and some characteristics of the red asymmetry of the Ca II K line are given.... 
CA-II K-LINE DIAGNOSTICS | ASTRONOMY & ASTROPHYSICS | LOOP | RED ASYMMETRY | CHROMOSPHERIC FLARE | SOLAR FLARE | SEMI-EMPIRICAL MODELS
Journal Article
Solar Physics, ISSN 0038-0938, 11/1970, Volume 15, Issue 1, pp. 139 - 147
Journal Article
No results were found for your search.

Cannot display more than 1000 results, please narrow the terms of your search.