Results 161 to 170 of about 45,569 (296)

On a Possible Solution to the Tidal Realignment Problem for Hot Jupiters. [PDF]

Astrophys J, 2021
Anderson KR, Winn JN, Penev K.
europepmc   +1 more source

Magnetospheric accretion models for T Tauri stars. 1: Balmer line profiles without rotation

, 1994
We argue that the strong emission lines of T Tauri stars are generally produced in infalling envelopes. Simple models of infall constrained to a dipolar magnetic field geometry explain many peculiarities of observed line profiles that are difficult, if ...
L. Hartmann, R. Hewett, N. Calvet
semanticscholar   +1 more source

Analytic and numerical models of the 3D multipolar magnetospheres of pre-main sequence stars

, 2011
Traditionally models of accretion of gas on to T Tauri stars have assumed a dipole stellar magnetosphere, partly for simplicity, but also due to the lack of information about their true magnetic field topologies.
Altschuler, Aly, Argiroffi, Bagnulo, Bessolaz, Collier Cameron, Donati, Donati, Donati, Donati, Donati, Donati, Donati, Donati, Donati, Donati, Dunstone, Flaccomio, Goodson, Goossens, Gregory, Gregory, Gregory, Gregory, Gregory, Gregory, Hartmann, Hussain, Hussain, Jardine, Jardine, Jardine, Johns-Krull, Johns-Krull, Johnstone, Kurosawa, Königl, Küker, Loinard, Long, Long, Long, Marsden, Matt, Miller, Mohanty, Morin, Morin, Morin, Orlando, Petrov, Preston, Riley, Romanova, Romanova, Romanova, Romanova, Ruan, Safier, Schatten, Schulz, Schwarzschild, Shu, Stibbs, Valenti, von Rekowski, Yang, Zanni   +67 more
core   +1 more source

Gone with the Molecular Wind: Photoevaporation in the Compact Dust Disk around CX Tau

The Astrophysical Journal
We present Keck NIRSPEC+AO high-resolution ( R ∼ 25,000), mid-infrared ( M -band: 4.6–5.2 μ m) spectra of the protoplanetary disk CX Tau. CX Tau provides an ideal laboratory to study inner disk chemistry in a disk where the signs of radial drift of ...
Alexa R. Anderson, Jonathan P. Williams, Geoff A. Blake, Klaus M. Pontoppidan, Colette Salyk, A. C. Adwin Boogert, Clara Ross, L. Ilsedore Cleeves   +7 more
doaj   +1 more source

Spatial and kinematic properties of the forbidden emission line region of T Tauri stars

, 1997
We have carried out a long-slit spectroscopic survey for 38 T Tauri stars (TTSs) to study the spatial and kinematic properties of their forbidden emission line (FEL) regions.
G. Hirth, R. Mundt, J. Solf
semanticscholar   +1 more source

Multi-wavelength study of a young open cluster NGC 7419

, 2008
Using UBVRI Halpha CCD photometric observations and the archival NIR and X-ray data, we have carried out a multi-wavelength study of a young star cluster NGC 7419.
Avedisova, Barbon, Baume, Beauchamp, Bertout, Bessell, Bessell, Bhatt, Blanco, Blitz, Brijesh Kumar, Caldwell, Cardelli, Caron, Cutri, Damiani, Dias, Dobashi, Dougherty, Favata, Feigelson, Fitzgerald, Girardi, Hamaguchi, Hernandez, Hillenbrand, Hillenbrand, Himali Joshi, Huang, J. C. Pandey, Jansen, Jeffries, Johnson, Johnson, Joshi, K. P. Singh, Kaluzny, Kerton, Khalil, King, Koornneef, Kroupa, Kukarkin, Kumar, Kumar, Landolt, Matsuyanagi, Mayne, Medhi, Meyer, Moffat, Naylor, Nilakshi, Oasa, Pandey, Pandey, Pandey, Pandey, Pandey, Phelps, Pigulski, Press, Price, Ram Sagar, Sagar, Sagar, Sagar, Sagar, Salpeter, Sana, Sandhu, Saurabh Sharma, Schmidt-Kaler, Siess, Spitzer, Stelzer, Stelzer, Stephenson, Stetson, Stetson, Strüder, Subramaniam, Tsujimoto, Turner, Ungerechts, van de Hulst, Wegner, Whittet, Zinnecker   +88 more
core   +1 more source

Chromospheric Properties of T Tauri Stars Determined from EUV Spectra [PDF]

, 1983
A. M. Brown, C. Jordan
openalex   +1 more source

Haro 5-2: A New Pre-main-sequence Quadruple Stellar System

The Astronomical Journal
We have discovered that the H α emission-line star Haro 5-2, located in the 3–6 Myr old Ori OB1b association, is a young quadruple system. The system has a 2+2 configuration, with an outer separation of 2.″6 and with resolved subarcsecond inner binary ...
Bo Reipurth, C. Briceño, T. R. Geballe, C. Baranec, S. Mikkola, A. M. Cody, M. S. Connelley, C. Flores, B. A. Skiff, J. D. Armstrong, N. M. Law, R. Riddle   +11 more
doaj   +1 more source

Automated CCD photometry of T Tauri stars [PDF]

, 1992
Matthew J. Richter, Gibor Basri, S. Perlmutter, C. Pennypacker   +3 more
openalex   +1 more source

Using the Ca ii Lines in T Tauri Stars to Infer the Abundance of Refractory Elements in the Innermost Disk Region

The Astrophysical Journal
We present a study of the abundance of calcium in the innermost disk of 70 T Tauri stars in the star-forming regions of Chamaeleon I, Lupus, and Orion OB1b. We use calcium as a proxy for the refractory material that reaches the inner disk.
Marbely Micolta, Nuria Calvet, Thanawuth Thanathibodee, Gladis Magris C., Carlo F. Manara, Laura Venuti, Juan Manuel Alcalá, Gregory J. Herczeg   +7 more
doaj   +1 more source