Results 71 to 80 of about 29,820 (298)

Thermally Pulsing Asymptotic Giant Branch Star Models and Globular Cluster Planetary Nebulae I: The Model

, 2011
Thermally pulsing asymptotic giant branch models of globular cluster stars are calculated using a synthetic model with the goal of reproducing the chemical composition, core masses and other observational parameters of the four known globular cluster ...
Alexander, Alves, Asplund, Bedin, Bertelli, Bertelli, Bianchi, Bianchi, Bica, Buell, Calamida, Caloi, Carretta, Cool, Da Costa, Davies, Gavilan, Gillett, Gratton, Gratton, Groenewegen, Groenewegen, Hansen, Hansen, Hansen, Harrington, Harris, Howard, Iglesias, Jacoby, James F. Buell, Lee, Marigo, Marino, Milone, Minniti, Ortalani, Otsuka, Peña, Piotto, Piotto, Rauch, Rauch, Reimers, Renzini, Renzini, Renzini, Richer, Schröder, Strickler, Vassiliadis, Vassiliadis, Vesperini, Wagenhuber, Yanny, Zinn, Zoccali   +56 more
core   +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

Light-Element Abundance Variations at Low Metallicity: the Globular Cluster NGC 5466

, 2010
We present low-resolution (R~850) spectra for 67 asymptotic giant branch (AGB), horizontal branch and red giant branch (RGB) stars in the low-metallicity globular cluster NGC 5466, taken with the VIRUS-P integral-field spectrograph at the 2.7-m Harlan J.
Bond, Briley, Cohen, Demarque, Denissenkov, Dierckx, Dotter, Eggleton, Fusi Pecci, Graeme H. Smith, Gratton, Harbeck, Hinkle, Howard E. Bond, Joshua Adams, Lee, Lee, Martell, Matthew Shetrone, Michael H. Siegel, Piotto, Plez, Rachel Wilkerson, Ramirez, Sarah L. Martell, Siegel, Siegel, Smith   +27 more
core   +1 more source

HST observations of the cometary blue compact dwarf galaxy UGC 4483: a relatively young galaxy? [PDF]

, 2001
We present V and I photometry of the resolved stars in the cometary blue compact dwarf galaxy UGC 4483 using Hubble Space Telescope Wide Field Planetary Camera 2 (WFPC2) images. The resulting I vs.
Bertelli G., Legrand F., Noeske K. G., Pilyugin L. S., Roy J.-R., Tantalo R., Tikhonov N. A., Trinh X. Thuan, Yuri I. Izotov   +8 more
core   +2 more sources

IDENTIFICATION OF A CLASS OF LOW-MASS ASYMPTOTIC GIANT BRANCH STARS STRUGGLING TO BECOME CARBON STARS IN THE MAGELLANIC CLOUDS [PDF]

, 2015
We have identified a new class of Asymptotic Giant Branch (AGB) stars in the Small and Large Magellanic Clouds (SMC/LMC) using optical to infrared photometry, light curves, and optical spectroscopy.
M. Boyer, I. McDonald, S. Srinivasan, A. Zijlstra, J. V. Loon, K. Olsen, G. Sonneborn   +6 more
semanticscholar   +1 more source

Obscured Asymptotic Giant Branch stars in the Magellanic Clouds [PDF]

Symposium - International Astronomical Union, 1999
We report on some recent advances in the study and understanding of heavily obscured AGB stars in the Magellanic Clouds.
openaire   +4 more sources

Evolution of the dust mass loss with luminosity along the giant branch of the globular cluster 47 Tuc [PDF]

, 2001
The paper investigates the properties of the dust mass loss in stars populating the giant branch of the globular cluster 47 Tuc, by combining ISOCAM and DENIS data. Raster maps of 5 fields covering areas ranging from 4 x 4 to 15 x 15 arcmin2 at different
A. Jorissen, A. Ramdani, Abergel, Arndt, Aussel, Bedijn, Bessell, Blöcker, Bowen, Cesarsky, Chun, Cioni, Claussen, de Jong, Delfosse, Draine, Fleischer, Fouqué, Fox, Frogel, Frogel, Frogel, Frogel, Fusi-Pecci, Gillett, Girardi, Glass, Gratton, Groenewegen, Habing, Hesser, Höfner, Jorissen, Jura, Justtanont, Kessler, Le Bertre, Le Bertre, Le Sidaner, Lee, Lloyd Evans, Meixner, Mengel, Netzer, Nishida, Schröder, Searle, Skrutskie, Starck, Tanabé, Tucholke, van der Veen, van Loon, van Loon, Vassiliadis, Verbunt, Weidemann, Whitelock, Whitelock, Winters, Zijlstra   +60 more
core   +2 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

Model Dust Envelopes for Asymptotic Giant Branch Stars. I. OH/IR Stars [PDF]

Journal of Astronomy and Space Sciences, 1995
OH/IR stars are the most massive and youngest subclass in asymptotic giant branch stars which pass through sporadic superwind phases. We have modeled the dust envelopes around OH/IR stars with close attention to the evolution of the structure of the dust
Kyung-Won Suh
doaj  

CLEAR EVIDENCE FOR THE PRESENCE OF SECOND-GENERATION ASYMPTOTIC GIANT BRANCH STARS IN METAL-POOR GALACTIC GLOBULAR CLUSTERS [PDF]

, 2015
Galactic globular clusters (GCs) are known to host multiple stellar populations: a first generation (FG) with a chemical pattern typical of halo field stars and a second generation (SG) enriched in Na and Al and depleted in O and Mg.
D. A. García-Hernández, S. Mészáros, M. Monelli, S. Cassisi, P. Stetson, O. Zamora, M. Shetrone, S. Lucatello   +7 more
semanticscholar   +1 more source