Results 61 to 70 of about 21,634 (214)

The bulk metal content of WASP-80 b from joint interior-atmosphere retrievals

Astronomy & Astrophysics
The atmospheres of warm gas giants can be readily characterized through transmission and emission spectroscopy. WASP-80 b is one such exoplanet, with an unusually low density that is in tension with the metal-rich composition expected for a planet of ...
Acuña-Aguirre L., Kreidberg L., Mollière P., Bachmann N.   +3 more
doaj   +1 more source

Die Grundlehren der Astronomie: nach ihrer geschichtlichen Entwicklung dargestellt

, 1877
DIE GRUNDLEHREN DER ASTRONOMIE: NACH IHRER GESCHICHTLICHEN ENTWICKLUNG DARGESTELLT Wilhelm Wundt Library (-) Die Grundlehren der Astronomie: nach ihrer geschichtlichen Entwicklung dargestellt (-
Gylden, Hugo
core   +2 more sources

The demographics of core-collapse supernovae

Astronomy & Astrophysics
Context. The observational properties of core-collapse supernovae are shaped by the envelopes of their progenitors. In massive binary systems, mass-transfer drastically alters the pre-supernova structures compared to single stars, which leads to a ...
Ercolino Andrea, Jin Harim, Langer Norbert, Gal-Yam Avishay, Schootemeijer Abel, Mannes Caroline   +5 more
doaj   +1 more source

Cosmological γ-γ pair-production background

Astronomy & Astrophysics
Context. The origin of positrons is one of the unsolved puzzles in astrophysics as the majority of sources are still unidentified. The cosmic photon background (CPB) is the isotropic radiation spanning the entire electromagnetic spectrum. Interactions of
Gelowicz Mika A., Siegert Thomas, Mittal Saurabh, Eisenberger Laura, Tsatsis Dimitris, Bauer Niklas C., Reinhardt Rudi, Ehrmann Patrik, Zimmerer Manja L., Yoneda Hiroki, Oka Tomohiko, Bouchet Tristan, Skalka Manuel R. H. W.   +12 more
doaj   +1 more source

SIMTERFERE: An optical interferometry simulator for quantifying the coherent flux stability of VLTI/GRAVITY+

Astronomy & Astrophysics
The implementation of the GRAVITY+ Adaptive Optics (GPAO) system at VLTI enables unprecedented sensitivity and stability in optical interferometry. This allows high-precision characterization of directly imaged exoplanets at medium spectral resolution ...
Sauter J. R., von Stauffenberg A., Bourdarot G., Brandner W., Eisenhauer F., Kreidberg L., Labadie L., Scheithauer S., Trevascus D., van Boekel R.   +9 more
doaj   +1 more source

Elemente der theoretischen Astronomie : für Studierende bearbeitet /

, 1886
1. Teil. Elemente der sphärischen Astronomie. -- 2. Teil. Nachträge und Tafeln. -- 3. Teil. Elemente der theoretischen Astronomie, 1. Abteilung : Theorie der elliptischen Bewegung und der Bahnbestimmung. -- 4. Teil. Elemente der theoretischen Astronomie,
Israel-Holtzwart, Karl,1839-1897(viaf)7780085
core  

STUDIUL STELELOR VARIABILE ÎN CADRUL ACTIVITĂȚILOR EXTRAȘCOLARE DE ASTRONOMIE

Studia Universitatis Moldaviae: Stiinte ale Educatiei
Această lucrare prezintă impactul activităților extrașcolare de astronomie, cu un accent special pe studiul stelelor variabile, asupra dezvoltării competenței investigaționale a elevilor.
USM ADMIN
doaj  

Environmental quenching of high-redshift galaxies: Interpreting JWST observations with simulations

Astronomy & Astrophysics
Recent observations of the high-redshift Universe (z > 3), particularly with the James Webb Space Telescope (JWST), have revealed a population of quenched galaxies that challenges current galaxy formation models, which systematically underpredict their ...
Döven Aleyna, Ayromlou Mohammadreza, Porciani Cristiano   +2 more
doaj   +1 more source

Symposium: "Schule und Weltraum" 2024

Medienimpulse
Die IAU/NAEC Initiative, gemeinsam mit ESERO Austria und der Österreichischen Gesellschaft für Astronomie & Astrophysik laden erneut zum Symposium „Schule und Weltraum“ mit nationalen und internationalen Gästen ein – dieses mal auf der VEGA Sternwarte ...
Katharina Kaiser-Müller
doaj  

Stellar flares cannot explain the Galactic 511 keV emission

Astronomy & Astrophysics
Context. The origin of the 511 keV line signal in the Milky Way remains unresolved despite decades of observations. The measured flux of ∼3 × 10−3 ph cm−2 s−1 suggests a steady-state positron injection rate of ∼1043-1044 e+ s−1.
Mittal Saurabh, Siegert Thomas, Calore Francesca, Panther Fiona H., Serpico Pasquale D., Yoneda Hiroki, Bauer Niklas C., Bouchet Tristan, Eisenberger Laura, Gelowicz Mika A., Oka Tomohiko, Reinhardt Rudi, Skalka Manuel R. H. W., Tsatsis Dimitris, Zimmerer Manja L.   +14 more
doaj   +1 more source