Results 51 to 60 of about 26,787 (255)

Lead: Asymptotic Giant Branch Production and Galactic Chemical Evolution [PDF]

The Astrophysical Journal, 2001
Accepted for ApJ, 19 pages, 4 ...
Travaglio C., BUSSO, Maurizio Maria, Busso M. M., Gratton R.   +3 more
openaire   +4 more sources

Photoelectron Spectroscopy of the Phosphorus Monosulfide (PS) and Phosphorus Monoxide (PO) Radicals

Small Structures, Volume 7, Issue 1, January 2026.
Sketch of the experiment to measure the photo electron spectrum of the PS radical produced in situ with a mixture of PH3, H2S and F atoms. PO and PS radicals are the smallest units of phosphorus oxides and phosphorus sulfides, respectively, two rich families of refractory compounds widely employed in industrial and technological applications. These two
Pedro Recio, Jorge Alonso de la Fuente, Myriam Drissi, Niyazi Bulut, Jean Christophe Loison, Gustavo Garcia, Susana Gomez Carrasco, Cristina Sanz Sanz, Luis Bañares, Sonia Marggi Poullain, Alexandre Zanchet   +10 more
wiley   +1 more source

Effects of Alpha-Element Enhancement and the Thermally Pulsing-Asymptotic Giant Branch on Surface Brightness Fluctuation Magnitudes and Broadband Colors [PDF]

, 2009
We investigate the effects of alpha-element enhancement and the thermally pulsing-asymptotic giant branch (TP-AGB) stars on the surface brightness fluctuation (SBF) magnitudes and broadband colors of simple stellar populations and compare to the ...
Bertelli, Biscardi, Blakeslee, Cantiello, Cassisi, Cordier, Dotter, Dotter, Dotter, Ferguson, Ferraro, Freedman, Gonzalez-Lopezlira, Guy Worthey, Hyun-chul Lee, Jensen, John P. Blakeslee, Kim, Lee, Lee, Lee, Lee, Liu, Maraston, Mei, Mucciarelli, Percival, Pietrinferni, Pietrinferni, Raimondo, Raimondo, Reimers, Salasnich, Scalo, Schiavon, Tonry, Tonry, Tonry, Vandenberg, Yi   +39 more
core   +3 more sources

Asymptotic Giant Branch Stars [PDF]

, 2004
Preface Chapter 1: Introduction: H.J. Habing and H. Olofsson N.B.: This chapter is not yet completed! 1.1 Bits of history 1.2 The structure of AGB stars 1.3 Observational characteristics of AGB stars 1.4 Distinctive properties of AGB stars Chapter 2: Evolution, Nucleosynthesis and Pulsation: P. Wood and J. Lattanzio 2.1 Basic observational properties 2.
openaire   +1 more source

CHEMICAL ANALYSIS OF ASYMPTOTIC GIANT BRANCH STARS IN M62 [PDF]

The Astrophysical Journal, 2015
Accepted for publication by ApJ, 25 pages, 8 figures and 5 ...
LAPENNA, EMILIO, MUCCIARELLI, ALESSIO, FERRARO, FRANCESCO ROSARIO, Origlia, L., LANZONI, BARBARA, MASSARI, DAVIDE, DALESSANDRO, EMANUELE   +6 more
openaire   +5 more sources

Random planar trees and the Jacobian conjecture

Journal of the London Mathematical Society, Volume 113, Issue 1, January 2026.
Abstract We develop a probabilistic approach to the celebrated Jacobian conjecture, which states that any Keller map (i.e. any polynomial mapping F:Cn→Cn$F\colon \mathbb {C}^n \rightarrow \mathbb {C}^n$ whose Jacobian determinant is a non‐zero constant) has a compositional inverse which is also a polynomial. The Jacobian conjecture may be formulated in
Elia Bisi, Piotr Dyszewski, Nina Gantert, Samuel G. G. Johnston, Joscha Prochno, Dominik Schmid   +5 more
wiley   +1 more source

Planetary nebulae: a key tool to reconstruct the evolutionary history of stars

Frontiers in Astronomy and Space Sciences
Planetary nebulae, among the most fascinating objects in the sky, have been extensively investigated in the past years, because their study provides important information on the low and intermediate mass stellar populations of the host environment ...
Paolo Ventura, Silvia Tosi, Flavia Dell’Agli, Stefano Bianchi   +3 more
doaj   +1 more source

Neuronal Dynamics of an Intrinsically Bursting Neuron Through the Caputo–Fabrizio Fractal–Fractional Hodgkin–Huxley Model

International Journal of Differential Equations, Volume 2026, Issue 1, 2026.
This study introduces a novel fractal–fractional extension of the Hodgkin–Huxley model to capture complex neuronal dynamics, with particular focus on intrinsically bursting patterns. The key innovation lies in the simultaneous incorporation of Caputo–Fabrizio operators with fractional order α for memory effects and fractal dimension τ for temporal ...
M. J. Islam, M. J. Abedin, A. Hoque, M. G. Hafez, Jaume Giné   +4 more
wiley   +1 more source

Systematic Search for Water Fountain Candidates Using the Databases of Circumstellar Maser Sources

The Astrophysical Journal Supplement Series
Water fountains (WFs) are thought to be objects in the morphological evolution of the circumstellar envelopes of low- and intermediate-mass evolved stars, transitioning from spherically symmetric to asymmetric shapes.
Haichen Fan, Jun-ichi Nakashima, D. Engels, Yong Zhang, Jian-Jie Qiu, Huan-Xue Feng, Jia-Yong Xie, Hiroshi Imai, Chih-Hao Hsia   +8 more
doaj   +1 more source

First giant branch and asymptotic giant branch stars in nearby aggregates

The Astronomical Journal, 1991
The properties of the brightest red stars in several aggregates in the Galaxy are compared with theoretical models. 22 asymptotic giant branch (AGB) stars are identified, four of which are in the thermally pulsing AGB (TPAGB) phase and four of which are TPAGB carbon stars.
Olin J. Eggen, Icko, Jr. Iben
openaire   +1 more source