Results 121 to 130 of about 1,478 (224)

Photometric and polarimetric clues to the circumstellar environment of RY Lupi

, 2009
International audienceAims: We investigate the stellar and circumstellar properties of the bright southern T Tauri star RY Lup, a G-type star showing type III variability.
Boivin, L., P. Bastien, Ménard, F., F. Ménard, L. Boivin, A. Le Van Suu, Bertout, C., Le van Suu, A., Bastien, P., Manset, N., N. Manset, C. Bertout   +11 more
core   +1 more source

The mystery of unidentified infrared emission bands. [PDF]

Astrophys Space Sci, 2022
Kwok S.
europepmc   +1 more source

Massive Stars: The Pre-Supernova Evolution Of Internal And Circumstellar Structure

, 2007
. We review new developments in the theory of massive stars and their circumstellar environments, considering the evolution from the main sequence to the supernova explosion.
Alexander Heger, Norbert Langer
core  

Detection of circumstellar CH2CHCN, CH2CN, CH3CCH and H2CS

, 2007
Based on observations carried out with the IRAM 30-meter telescope. IRAM is supported by INSU/CNRS (France), MPG (Germany) and IGN (Spain).-- Accepted for publication in Astronomy & Astrophysics.We report on the detection of vinyl cyanide (CH2CHCN ...
Pardo, Juan R., Fonfría, José Pablo, M. Guélin, J. P. Fonfrı́a, Cernicharo, José, J. R. Pardo, Pardo Carrión, Juan Ramón, J. Cernicharo, M. Agúndez, J. P. Fonfría, Agúndez, Marcelino, Fonfría, J. P., Guélin, Michel   +12 more
core   +1 more source

Radiation-driven acceleration in the expanding WR140 dust shell. [PDF]

Nature, 2022
Han Y, Tuthill PG, Lau RM, Soulain A.
europepmc   +1 more source

X-Ray Diagnostics of Cassiopeia A’s “Green Monster”: Evidence for Dense Shocked Circumstellar Plasma

The Astrophysical Journal Letters
The recent survey of the core-collapse supernova remnant Cassiopeia A (Cas A) with the MIRI instrument on board the James Webb Space Telescope (JWST) revealed a large structure in the interior region, referred to as the “Green Monster.” Although its ...
Jacco Vink, Manan Agarwal, Patrick Slane, Ilse De Looze, Dan Milisavljevic, Daniel Patnaude, Tea Temim   +6 more
doaj   +1 more source

A Shock Crashing into Confined Dense Circumstellar Matter Brightens the Nascent SN 2023ixf

The Astrophysical Journal
Red supergiants may experience a short-lived period of episodic mass loss rather than steady winds before their core collapses, leading to dense circumstellar matter (CSM) close to core-collapse supernovae (SNe). Interaction of SN ejecta with such nearby
Maokai Hu, Lifan Wang, Xiaofeng Wang
doaj   +1 more source

SN 2024abfl: A Flat-plateau, Low-luminosity Type IIP Supernova with Early Circumstellar Matter Interaction

The Astrophysical Journal
We present photometric and spectroscopic observations of SN 2024abfl, a low-luminosity Type IIP supernova (LLSN) discovered shortly after explosion. The transient reached a peak absolute magnitude of M _V  = −14.9 and exhibited an extended, flat plateau ...
Madison Gerard, Jennifer E. Andrews, Geoffrey C. Clayton, David J. Sand, K. Azalee Bostroem, Jeniveve Pearson, Raya Dastidar, Aravind P. Ravi, Conor L. Ransome, Bhagya Subrayan, Griffin Hosseinzadeh, Brian Hsu, Yize Dong, Manisha Shrestha, Stefano Valenti, Nathan Smith, Daryl Janzen, M. J. Lundquist, Nicolás Meza, Saurabh W. Jha, Kate D. Alexander, Collin Christy, Noah Franz, Lindsey A. Kwok, Moira Andrews, Joseph Farah, Daichi Hiramatsu, D. Andrew Howell, Curtis McCully, Kathryn Wynn, Réka Könyves-Tóth, Xiaofeng Wang, Alexei V. Filippenko, Thomas G. Brink   +33 more
doaj   +1 more source

exoALMA. XI. ALMA Observations and Hydrodynamic Models of LkCa 15: Implications for Planetary Mass Companions in the Dust Continuum Cavity

The Astrophysical Journal Letters
In the past decade, the Atacama Large Millimeter/submillimeter Array (ALMA) has revealed a plethora of substructures in the disks surrounding young stars.
Charles H. Gardner, Andrea Isella, Hui Li, Shengtai Li, Jaehan Bae, Marcelo Barraza-Alfaro, Myriam Benisty, Gianni Cataldi, Pietro Curone, Josh A. Eisner, Stefano Facchini, Daniele Fasano, Mario Flock, Katherine B. Follette, Misato Fukagawa, Maria Galloway-Sprietsma, Himanshi Garg, Cassandra Hall, Jane Huang, John D. Ilee, Michael J. Ireland, Andrés F. Izquierdo, Christopher M. Johns-Krull, Kazuhiro Kanagawa, Adam L. Kraus, Geoffroy Lesur, Shangfei Liu, Cristiano Longarini, Ryan A. Loomis, Francois Menard, Ryuta Orihara, Christophe Pinte, Daniel Price, Luca Ricci, Giovanni Rosotti, Steph Sallum, Jochen Stadler, Richard Teague, Gaylor Wafflard-Fernandez, David J. Wilner, Andrew J. Winter, Lisa Wölfer, Hsi-Wei Yen, Tomohiro C. Yoshida, Brianna Zawadzki, Zhaohuan Zhu   +45 more
doaj   +1 more source

A radio-detected type Ia supernova with helium-rich circumstellar material. [PDF]

Nature, 2023
Kool EC, Johansson J, Sollerman J, Moldón J, Moriya TJ, Mattila S, Schulze S, Chomiuk L, Pérez-Torres M, Harris C, Lundqvist P, Graham M, Yang S, Perley DA, Strotjohann NL, Fremling C, Gal-Yam A, Lezmy J, Maguire K, Omand C, Smith M, Andreoni I, Bellm EC, Bloom JS, De K, Groom SL, Kasliwal MM, Masci FJ, Medford MS, Park S, Purdum J, Reynolds TM, Riddle R, Robert E, Ryder SD, Sharma Y, Stern D.   +36 more
europepmc   +1 more source