Results 161 to 170 of about 386,435 (271)

Long-period Variable Stars in NGC 147 and NGC 185. II. Their Dust Production

The Astrophysical Journal
This study presents a comparative analysis of mass-loss and dust production rates in the dwarf galaxies NGC 147 and NGC 185, focusing on long-period variables (LPVs) and pulsating asymptotic giant branch stars as primary indicators of dust feedback into ...
Hamidreza Mahani, Atefeh Javadi, Jacco Th. van Loon, Francisca Kemper, Roya Hamedani Golshan, Iain McDonald, Habib G. Khosroshahi, Hedieh Abdollahi, Sajjad Mahdizadeh   +8 more
doaj   +1 more source

Magnetic fields in circumstellar disks: The potential of Zeeman observations

, 2017
Context. Recent high angular resolution polarimetric continuum observations of circumstellar disks provide new insights into their magnetic field. However, direct constraints are limited to the plane of sky component of the magnetic field.
Brauer, R., Flock, M., Wolf, S.
core   +1 more source

Two Decades of Dust Evolution in SN 2005af through JWST, Spitzer, and Chemical Modeling

The Astrophysical Journal
The evolution of dust in core-collapse supernovae (SNe), in general, is poorly constrained owing to a lack of infrared observations a few years after explosion. Most theories of dust formation in SNe heavily rely only on SN 1987A.
Arkaprabha Sarangi, Szanna Zsíros, Tamás Szalai, Laureano Martinez, Melissa Shahbandeh, Ori D. Fox, Schuyler D. Van Dyk, Alexei V. Filippenko, Melina Cecilia Bersten, Ilse De Looze, Chris Ashall, Tea Temim, Jacob E. Jencson, Armin Rest, Dan Milisavljevic, Luc Dessart, Eli Dwek, Nathan Smith, Samaporn Tinyanont, Thomas G. Brink, WeiKang Zheng, Geoffrey C. Clayton, Jennifer Andrews   +22 more
doaj   +1 more source

The Near-infrared Echo from SN 2023xgo: Evidence for a Massive Presupernova Eruption in a Type Ibn/Icn Supernova

The Astrophysical Journal Letters
We present near-infrared (NIR) and optical observations and analysis of the Type Ibn/Icn supernova (SN) 2023xgo, spanning the period from 2 to 100 days past explosion.
Masayuki Yamanaka, Takahiro Nagayama
doaj   +1 more source

Radiative transfer in circumstellar dust shells

The Astrophysical Journal, 1976
An iterative numerical procedure is developed to calculate the radiation field as a function of position, direction, and wavelength within a spherically symmetric circumstellar dust shell. The dust shell is assumed to consist of gray, isotropically scattering dust particles in thermal equilibrium with the radiation field and to be characterized by ...
openaire   +1 more source

A Multiwavelength ALMA View of Gas and Dust in Binary Protoplanetary System AS 205: Evidence of Dust Asymmetric Distribution

The Astrophysical Journal
We present Atacama Large Millimeter/submillimeter Array observations of multiwavelength dust emissions at 3.1 and 1.3 mm, along with molecular line emissions of CO(2–1), CO(3–2), ^13 CO(3–2), and C ^18 O(3–2) at spatial resolutions of 7–45 au toward the ...
Nguyen Thi Phuong, Nguyen Tat Thang
doaj   +1 more source

The Presolar Grain Database. I. Silicon Carbide

The Astrophysical Journal Supplement Series
The Presolar Grain Database (PGD) contains the vast majority of isotope data (published and unpublished) on presolar grains and was first released as a collection of spreadsheets in 2009.
Thomas Stephan, Reto Trappitsch, Peter Hoppe, Andrew M. Davis, Maitrayee Bose, Asmaa Boujibar, Frank Gyngard, K. Mairin Hynes, Nan Liu, Larry R. Nittler, Ryan C. Ogliore   +10 more
doaj   +1 more source

History of two mass loss processes in VY CMa. [PDF]

Proc Int Astron Union, 2023
Quintana-Lacaci G, Velilla L, Fonfría JP, Cernicharo J, Castro-Carrizo A, Agúndez M, Decin L.   +6 more
europepmc   +1 more source

Correlated Molybdenum, Ruthenium, and Barium Isotope Anomalies in Presolar Silicon Carbide Grains

The Astrophysical Journal
We have analyzed molybdenum, ruthenium, and barium isotopes simultaneously in 55 individual presolar silicon carbide (SiC) grains from the Murchison CM2 meteorite using the Chicago Instrument for Laser Ionization (or CHILI).
Thomas Stephan, Peter Hoppe, Andrew M. Davis, Julie M. Korsmeyer, Andrew Regula, Hannah E. Richards   +5 more
doaj   +1 more source

Crystallization of stardust analogs under an electron flux atmosphere. [PDF]

PNAS Nexus
Shohan RA, Cly C, Speck A, Sargent B, Nuth JA, Whittington A, Ponce A.   +6 more
europepmc   +1 more source