Results 31 to 40 of about 3,169 (205)

Disk evolution, element abundances and cloud properties of young gas giant planets [PDF]

, 2014
ChHc and PBR highlights financial support of the European Community under the FP7 program by an ERC starting grant. PW, IK, and WFT acknowledge funding from the European Union Seventh Framework Programme FP7-2011 under grant agreement No.
Kamp, I., Peter Woitke, Woitke, P., Meijerink, R., Helling, C., Inga Kamp, Christiane Helling, Wing-Fai Thi, Kamp, Inga, Meijerink, Rowin, Woitke, Peter, Kamp, Inga; id_orcid, Rimmer, Paul B., Rowin Meijerink, Rimmer, P.B., Paul B. Rimmer, Thi, W.-F., Thi, Wing-Fai, Helling, Christiane, Paul Rimmer   +19 more
core   +1 more source

Millimetre Observations of Maser-Emitting Planetary Nebulae

Galaxies, 2022
Observations in the millimetre bands of maser-emitting planetary nebulae (PNe) are crucial to study their circumstellar molecular gas at the beginning of the PN phase.
Lucero Uscanga, José R. Rizzo, Miguel Santander-García, José F. Gómez, Luis F. Miranda, Olga Suárez, Panayotis Boumis, Mónica I. Rodríguez, Gerardo Ramos-Larios, Roldán A. Cala   +9 more
doaj   +1 more source

Numerical modeling of gravitational instability outcomes in multiphase circumstellar discs

EPJ Web of Conferences, 2013
To suggest consistent route toward planetesimal and planetary core formation in circumstellar discs we study gravitational instability outcomes in massive multiphase (gas-collisionless bodies) disc.
Snytnikov Valeriy N., Stoyanovskaya Olga P.   +1 more
doaj   +1 more source

SPECTROSCOPIC MONITORING OF THE B[E] OBJECTS FSCMA AND MOCAM

Odessa Astronomical Publications, 2019
Objects with the B[e] phenomenon exhibit permitted and forbidden emission lines due to the presence of circumstellar ionized gas and large infrared excesses due to processing of the stellar radiation by circumstellar dust.
A. K. Kuratova, A. S. Miroshnichenko, S. V. Zharikov, N. Manset, S. A. Khokhlov, A. Raj, A. V. Kusakin, I. V. Reva, R. I. Kokumbaeva, I. A. Usenko, A. Y. Knyazev   +10 more
doaj   +1 more source

The Radial Distribution and Excitation of H2 around Young Stars in the HST-ULLYSES Survey

The Astronomical Journal, 2023
The spatial distribution and evolution of gas in the inner 10 au of protoplanetary disks form the basis for estimating the initial conditions of planet formation.
Kevin France, Nicole Arulanantham, Erin Maloney, P. Wilson Cauley, P. Ábrahám, Juan M. Alcalá, Justyn Campbell-White, Eleonora Fiorellino, Gregory J. Herczeg, Brunella Nisini, Miguel Vioque   +10 more
doaj   +1 more source

Mean gas opacity for circumstellar environments and equilibrium temperature degeneracy

, 2014
Context. In a molecular cloud dust opacity typically dominates over gas opacity, yet in the vicinities of forming stars dust is depleted, and gas is the sole provider of opacity.
H. Klahr, Th. Henning, R. Kuiper, C. P. Dullemond, M. G. Malygin   +4 more
core   +1 more source

Circumstellar Chemistry

, 2021
Circumstellar chemistry refers to the group of processes able to transform the chemical nature of a cloud of gas and dust surrounding a star. This general definition encompasses both young and evolved stars out of the main sequence, those which may host ...
Marcelino Agúndez, Agúndez, Marcelino
core   +1 more source

THE SPECTROSCOPY OF THE PULSATING CARBON STAR R Lep

Odessa Astronomical Publications, 2017
The first results of detailed spectroscopy are presented for carbon Mira R Leporis. This long-period variable is undergoing deep fadings, apparently caused by dust formation around the star.
L. Zacs, O. Alksnis
doaj   +1 more source

Evolution of Gas and Dust in Circumstellar Disks [PDF]

Symposium - International Astronomical Union, 2000
A clear understanding of the chemical processing of matter as it is transferred from a molecular cloud to a planetary system depends heavily on the physical conditions endured by gas and dust as these accrete onto a disk and are incorporated into planetary bodies.
openaire   +2 more sources

Modelling and observations of molecules in discs around young stars [PDF]

, 2013
This thesis contains a study of molecules within circumstellar discs around young stars. Firstly, the chemistry of a disc around a young, Class 0 protostar is modelled.
Ilee, John David
core