Results 31 to 40 of about 77,803 (191)

Microlensing of circumstellar envelopes: II. emission lines from radial and azimuthal flow during fold caustic crossings [PDF]

, 2003
This paper examines the line profile evolution due to bulk motion in circumstellar envelopes during microlensing fold caustic crossing events. These events have recently been shown to be a sensitive probe of stellar surface brightness profiles, thus ...
Bryce, H.M., Hendry, M.A., Ignace, R., H. M. Bryce, M. A. Hendry, R. Ignace   +5 more
core   +1 more source

Planet–planet scattering in circumstellar gas disks [PDF]

Astronomy and Astrophysics, 2010
Astronomy and Astrophysics Letters, in ...
MARZARI, FRANCESCO, BARUTEAU, C, SCHOLL, H.   +2 more
openaire   +2 more sources

Characterizing circumstellar disk around young stars [PDF]

, 2010
The circumstellar disks play a fundamental role in star and planet formation process. Studies on circumstellar disks are generally carried on following two viable approaches: "statistical" studies, where a large samples of sources are measured to ...
Schisano, Eugenio
core   +1 more source

Interaction of a Supernova with a Circumstellar Disk [PDF]

The Astrophysical Journal, 2018
Abstract Interaction between a supernova (SN) ejecta and a dense circumstellar medium (CSM) can power a luminous light curve and create narrow emission lines in the spectra. While theoretical studies of interaction often assume a spherically symmetric CSM, there are observational indications that the gas surrounding some SNe has a disk ...
Austin T. McDowell, Paul C. Duffell, Daniel Kasen   +2 more
openaire   +2 more sources

Observations of the Chemistry in Circumstellar Disks [PDF]

Symposium - International Astronomical Union, 2000
Circumstellar disks around classical T Tauri stars have still large amounts of primary molecular gas and dust, which may evolve to form planetary systems. Although it is the remnant of the parental cloud, the gas component shows significant chemical evolution.
A. Dutrey, S. Guilloteau, M. Guélin
openaire   +1 more source

Debris Disks Can Contaminate Mid-infrared Exoplanet Spectra: Evidence for a Circumstellar Debris Disk around Exoplanet Host WASP-39

The Astrophysical Journal Letters
The signal from a transiting planet can be diluted by astrophysical contamination. In the case of circumstellar debris disks, this contamination could start in the mid-infrared and vary as a function of wavelength, which would then change the observed ...
Laura Flagg, Alycia J. Weinberger, Taylor J. Bell, Luis Welbanks, Giuseppe Morello, Diana Powell, Jacob L. Bean, Jasmina Blecic, Nicolas Crouzet, Peter Gao, Julie Inglis, James Kirk, Mercedes López-Morales, Karan Molaverdikhani, Nikolay Nikolov, Apurva V. Oza, Benjamin V. Rackham, Seth Redfield, Shang-Min Tsai, Ray Jayawardhana, Laura Kreidberg, Matthew C. Nixon, Kevin B. Stevenson, Jake D. Turner   +23 more
doaj   +1 more source

Modelling and interpretation of SEDs*

EPJ Web of Conferences, 2015
Circumstellar disks are mostly detected by larger continuum fluxes in the infrared to mm spectral regions as compared to naked stars (a flux excess).
Woitke Peter
doaj   +1 more source

Extending the ALMA Census of Circumstellar Disks in the Upper Scorpius OB Association

The Astrophysical Journal
We present Atacama Large Millimeter/submillimeter Array (ALMA) Band 7 continuum (340 GHz) and carbon monoxide (CO) J = 3–2 observations for an extended sample of disks in the Upper Scorpius OB Association (Upper Sco, age ∼10 Myr).
John M. Carpenter, Taran L. Esplin, Kevin L. Luhman, Eric E. Mamajek, Sean M. Andrews   +4 more
doaj   +1 more source

MIRI MRS Observations of β Pictoris. I. The Inner Dust, the Planet, and the Gas

The Astrophysical Journal
We present JWST MIRI Medium Resolution Spectrograph (MRS) observations of the β Pictoris system. We detect an infrared excess from the central unresolved point source from 5 to 7.5 μ m which is indicative of dust within the inner ∼7 au of the system.
Kadin Worthen, Christine H. Chen, David R. Law, Cicero X. Lu, Kielan Hoch, Yiwei Chai, G. C. Sloan, B. A. Sargent, Jens Kammerer, Dean C. Hines, Isabel Rebollido, William Balmer, Marshall D. Perrin, Dan M. Watson, Laurent Pueyo, Julien H. Girard, Carey M. Lisse, Christopher C. Stark   +17 more
doaj   +1 more source

The Disks In Scorpius–Centaurus Survey (DISCS). I. Four Newly Resolved Debris Disks in Polarized Intensity Light

The Astronomical Journal
The presence of infrared excesses around stars directly correlates with spatially resolved imaging detections of circumstellar disks at both millimeter and optical/near-infrared wavelengths.
Justin Hom, Thomas M. Esposito, Katie A. Crotts, Gaspard Duchêne, Jennifer Patience, Johan Mazoyer, Robert J. De Rosa, Christine H. Chen, Paul Kalas, Bruce Macintosh, Brenda C. Matthews   +10 more
doaj   +1 more source