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21 papers · 2 filters
Modeling the CO outflow in DG Tau B: Swept-up shells versus perturbed MHD disk wind
A. de Valon, C. Dougados, S. Cabrit +3
The origin of outflows and their exact impact on disk evolution and planet formation remain crucial open questions. DG Tau B is a Class I protostar associated with a rotating conic…
Disk dissipation, giant planet formation and star-formation-rate fluctuations in the past three-million-year history of Gould's Belt
Mingchao Liu, Jinhua He, Jixing Ge +3
Although episodic star formation (SF) had been suggested for nearby SF regions, a panoramic view to the latest episodic SF history in the solar neighborhood is still missing. By un…
ALMA Observations of the HD~110058 debris disk
Antonio S. Hales, SebastiÁn Marino, Patrick D. Sheehan +7
We present Atacama Large Millimeter Array (ALMA) observations of the young, gas-rich debris disk around HD110058 at 0.3-0.6\arcsec resolution. The disk is detected in the 0.85 and…
A HARPS radial velocity search for planets in the Scorpius-Centaurus association. And its combination with the HARPS and SOPHIE young nearby stars (YNS) surveys
Antoine Grandjean, A. -M. Lagrange, N. Meunier +13
The Scorpius-Centaurus (Sco-Cen) young and nearby massive star-forming region is particularly well suited for extrasolar planet searches with both direct imaging and radial velocit…
The binary system of the spinning-top Be star Achernar
P. Kervella, S. Borgniet, A. Domiciano de Souza +16
Achernar, the closest and brightest classical Be star, presents rotational flattening, gravity darkening, occasional emission lines due to a gaseous disk, and an extended polar win…
Stability of axially symmetric magnetic fields in stars
L. Becerra, A. Reisenegger, J. A. Valdivia +1
The magnetic fields observed in Ap-stars, white dwarfs, and neutron stars are known to be stable for long times. However, the physical conditions inside the stellar interiors that…