Results 141 to 150 of about 3,278,550 (239)

Kinematics of the circumstellar gas around UXOR stars

, 2004
This thesis presents the results of a high spectral resolution study of the circumstellar (CS) gas around the intermediate mass, pre-main sequence UXOR stars BF Ori, SV Cep, UX Ori, WW Vul and XY Per. The results are based on a set of 38 echelle spectra covering the spectral range 3800-5900 Angstroms, monitoring the stars on time scales of months, days
openaire   +2 more sources

Tracing large-scale structures in circumstellar disks with ALMA

, 2012
Planets are supposed to form in circumstellar disks. The gravitational potential of a planet perturbs the disk and leads to characteristic structures, i.e. spiral waves and gaps, in the disk's density profile.
Klahr, Hubert H., Ruge, Jan Philipp, Uribe, Ana L., Wolf, Sebastian   +3 more
core   +1 more source

Ring-gap Structures in the Class I Circumstellar Disk of CrA IRS 2 Associated with the Magnetic Flux-driven Bubble

The Astrophysical Journal
Recent Atacama Large Millimeter/submillimeter Array (ALMA) observations with 0 $\mathop{.}\limits^{^{\prime\prime} }$ 1 resolution have revealed characteristic substructures in circumstellar disks around young Class I sources, providing clues to the ...
Ayumu Shoshi, Masayuki Yamaguchi, Mitsuki Omura, Kazuki Tokuda, Naofumi Fukaya, Kengo Tachihara, Masahiro N. Machida   +6 more
doaj   +1 more source

Accretion and Outflow in Orion-KL Source I

The Astrophysical Journal
We present Atacama Large Millimeter/submillimeter Array observations of SiO, SiS, H _2 O, NaCl, and SO line emission at ∼30–50 mas resolution. These images map the molecular outflow and disk of Orion Source I (SrcI) on ∼12–20 au scales.
Melvyn Wright, Brett A. McGuire, Adam Ginsburg, Tomoya Hirota, John Bally, Ryan Hwangbo, T. Dex Bhadra, Chris John, Rishabh Dave   +8 more
doaj   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

Multiband ALMA Polarization Observations of BHB 07-11 Reveal Aligned Dust Grains in Complex Spiral Arm Structures

The Astrophysical Journal
Polarization-mode observations from the Atacama Large Millimeter/submillimeter Array (ALMA) are powerful tools for studying the dust grain populations in circumstellar disks.
Austen Fourkas, Leslie W. Looney, Zhe-Yu Daniel Lin, Martin Radecki, Zhi-Yun Li, John J. Tobin, Ian W. Stephens, Manuel Fernández-López, Haifeng Yang, Woojin Kwon, Rachel Harrison   +10 more
doaj   +1 more source

Detection of CH in the O-rich Planetary Nebula NGC 6302

The Astrophysical Journal
Planetary nebulae are sites where ejected stellar material evolves into complex molecules, but the precise physical conditions and chemical routes that govern these processes are unclear.
Charmi Bhatt, Jan Cami, Els Peeters, Nicholas Clark, Paula Moraga Baez, Kevin Volk, G. C. Sloan, Joel H. Kastner, Harriet L. Dinerstein, Mikako Matsuura, Bruce Balick, Kathleen E. Kraemer, Kay Justtanont, Olivia Jones, Raghvendra Sahai, Isabel Aleman, Michael J. Barlow, Jeronimo Bernard-Salas, Joris Blommaert, Naomi Hirano, Patrick Kavanagh, Francisca Kemper, Eric Lagadec, J. Martin Laming, Frank Molster, Hektor Monteiro, Anita M. S. Richards, N. C. Sterling, Maryam Torki, Peter A. M. van Hoof, Jeremy R. Walsh, L. B. F. M. Waters, Roger Wesson, Finnbar Wilson, Nicholas J. Wright, Albert A. Zijlstra   +35 more
doaj   +1 more source

The structure of the circumstellar gas of SN 1987A

, 1997
14 pages including 7 Postscript figures, paspconf.sty; To appear in proceedings ``SN 1987A: Ten Years After'' (eds. M. Phillips & N. Suntzeff)
Lundqvist, Peter, Sonneborn, George
openaire   +2 more sources

The Observation of Circumstellar Disks: Dust and Gas Components

, 2004
14 pages, COMETS II, M.C. Festou, H.U. Keller, H.A. Weaver eds, to appear in 2004, Space Science Series of the University of Arizona (R. Binzel Ed.), Tucson, AZ. A high resolution version of the paper is available at: http://www.strw.leidenuniv.nl/~augereau/publications ...
Dutrey, Anne, Etangs, Alain Lecavelier des, Augereau, Jean-Charles   +2 more
openaire   +2 more sources

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