Results 81 to 90 of about 386,435 (271)

Early Planet Formation in Embedded Disks (eDisk). XIII. Aligned Disks with Nonsettled Dust around the Newly Resolved Class 0 Protobinary R CrA IRAS 32

The Astrophysical Journal
Young protostellar binary systems, with expected ages less than ∼10 ^5 yr, are little modified since birth, providing key clues to binary formation and evolution. We present a first look at the young, Class 0 binary protostellar system R CrA IRAS 32 from
Frankie J. Encalada, Leslie W. Looney, Shigehisa Takakuwa, John J. Tobin, Nagayoshi Ohashi, Jes K. Jørgensen, Zhi-Yun Li, Yuri Aikawa, Yusuke Aso, Patrick M. Koch, Woojin Kwon, Shih-Ping Lai, Chang Won Lee, Zhe-Yu Daniel Lin, Alejandro Santamaría-Miranda, Itziar de Gregorio-Monsalvo, Nguyen Thi Phuong, Adele Plunkett, Jinshi Sai (Insa Choi), Rajeeb Sharma, Hsi-Wei Yen, Ilseung Han   +21 more
doaj   +1 more source

Interrelationships between interstellar and interplanetary grains [PDF]

, 1986
The relationship between solar system dust (SSD) and interstellar dust particles (ISMD) is being reconsidered because of the discovery of isotopic anomalies in meteorites.
Clayton, D. D.
core   +2 more sources

A Spitzer Survey for Dust in Type IIn Supernovae [PDF]

, 2011
Recent observations suggest that Type IIn supernovae (SNe IIn) may exhibit late-time (>100 days) infrared (IR) emission from warm dust more than other types of core-collapse SNe.
Alexei V. Filippenko, Alicia M. Soderberg, Andrews, Andrews, Blanc, Blondin, Blondin, Bode, Boles, Carlo, Challis, Chandra, Chandra, Chandra, Chandra, Chugai, Chugai, Dahlén, Drake, Dwek, Elias, Fazio, Fesen, Fox, Fox, Fransson, Gal-Yam, Garnavich, Gerardy, Graham, Herter, Hildebrand, Immler, Immler, Immler, Itagaki, Jeffrey M. Silverman, Kiewe, Kotak, Kotak, Kotak, Kozasa, Langer, Lee, Lewis, Li, Luckas, Maeder, Maeder, Markwardt, Marsden, Matheson, Matsuura, Meikle, Meikle, Meikle, Meikle, Merrill, Michael F. Skrutskie, Milisavljevic, Miller, Miller, Miller, Modjaz, Mohan Ganeshalingam, Nakano, Nakar, Nathan Smith, Nozawa, Nozawa, Ori D. Fox, Pignata, Prasad, Prasad, Prasad, Prieto, Quimby, Rest, Roger A. Chevalier, Schaller, Schlegel, Silverman, Smith, Smith, Smith, Smith, Smith, Smith, Smith, Smith, Smith, Smith, Soderberg, Steele, Stritzinger, Sugerman, Telesco, Thea N. Steele, Thompson, Thrasher, Tsvetkov, Williams   +101 more
core   +3 more sources

VLT spectropolarimetry of the optical transient in NGC 300 - Evidence of asymmetry in the circumstellar dust [PDF]

, 2009
Aims. We study possible signs of asymmetry in the bright optical transient in NGC 300, to obtain independent information about the explosion mechanism, the progenitor star and its circumstellar environment. Methods.
F. Patat, J. Maund, S. Benetti, M. Botticella, E. Cappellaro, A. Harutyunyan, M. Turatto   +6 more
semanticscholar   +1 more source

Insights Into the Gas‐Phase Structure and Internal Dynamics of Diphenylsilane: A Broadband Rotational Spectroscopy Study

ChemPhysChem, Volume 26, Issue 2, January 14, 2025.
The structure of diphenylsilane could be determined from the rotational spectra of all its singly substituted heavy atom isotopologues. A comparison with its oxygen analogue diphenylether revealed some interesting differences in the internal dynamics as well as in the gas‐phase structure.
Gayatri Batra, Melanie Schnell
wiley   +1 more source

MODELS OF CIRCUMSTELLAR MASERS IN BIPOLAR OUTFLOWS

Odessa Astronomical Publications, 2017
Sources of molecular maser radio emission in envelopes of late-type variable stars (red giants and supergiants) are considered. Radio and optical data on asymmetry of mass loss process in red giants are briefly reviewed.
G. M. Rudnitskij
doaj   +1 more source

Low RV from Circumstellar Dust around Supernovae [PDF]

, 2008
The effective extinction law for supernovae surrounded by circumstellar dust is examined with Monte Carlo simulations. Grains with light scattering properties as for interstellar dust in the Milky Way (MW) or the Large Magellanic Clouds (LMC), but ...
A. Goobar
semanticscholar   +1 more source

First direct detection of large polycyclic aromatic hydrocarbons on asteroid (162173) Ryugu samples: An interstellar heritage

Natural Sciences, Volume 4, Issue 4, October 2024.
Large free aromatic species, with up to 61 carbon atoms, were detected in grains of the Ryugu carbonaceous asteroid using ultra‐sensitive two‐step laser mass spectrometry. This discovery confirms the presence of large polycyclic aromatic hydrocarbons in the interstellar medium and provides new information on the formation and evolution of organic ...
Hassan Sabbah, Ghylaine Quitté, Karine Demyk, Christine Joblin   +3 more
wiley   +1 more source

Radiative Pressure on Fractal Dust Grains in Oxygen-rich AGB Stars

The Astrophysical Journal
There is still considerable debate on the exact composition of grains formed in the outflows of O-rich, asymptotic giant branch stars. Estimates of the expected condensation distances based on radiative transfer calculations show that iron-free silicates
Frank T. Ferguson, Joseph A. Nuth, John A. Paquette   +2 more
doaj   +1 more source

SN 2020uem: a Possible Thermonuclear Explosion within a Dense Circumstellar Medium. I. The Nature of Type IIn/Ia-CSM SNe from Photometry and Spectroscopy

The Astrophysical Journal, 2023
We have performed intensive follow-up observations of a Type IIn/Ia-CSM supernova (SN IIn/Ia-CSM), 2020uem, with photometry, spectroscopy, and polarimetry. In this paper, we report on the results of our observations focusing on optical/near-infrared (NIR)
Kohki Uno, Keiichi Maeda, Takashi Nagao, Tatsuya Nakaoka, Kentaro Motohara, Akito Tajitsu, Masahiro Konishi, Shuhei Koyama, Hidenori Takahashi, Masaomi Tanaka, Hanindyo Kuncarayakti, Miho Kawabata, Masayuki Yamanaka, Kentaro Aoki, Keisuke Isogai, Kenta Taguchi, Mao Ogawa, Koji S. Kawabata, Yuzuru Yoshii, Takashi Miyata, Ryo Imazawa   +20 more
doaj   +1 more source