Results 41 to 50 of about 25,326 (243)

On Solar Type Protostars [PDF]

International Astronomical Union Colloquium, 1980
The formation of a 1 M⊙ protostar in spherical symmetry has been followed in time dependent hydrodynamics with a detailed description of the equation of state and a careful treatment of radiative transport. The comparison of the dynamic evolution with observation is made in terms of the Hertzprung-Russell diagram.
Karl-Heinz A. Winkler, Michael J. Newman
openaire   +2 more sources

Pulsed accretion in a variable protostar [PDF]

Nature, 2013
Periodic increases in luminosity arising from variable accretion rates have been predicted for some close pre-main sequence binary stars as they grow from circumbinary disks. The phenomenon is known as "pulsed accretion" and can affect the orbital evolution and mass distribution of young binaries, as well as the potential for planet formation in the ...
Muzerolle, James, Furlan, Elise, Flaherty, Kevin, Balog, Zoltan, Gutermuth, Robert   +4 more
openaire   +3 more sources

Clustered Star Formation in W75 N [PDF]

, 2002
We present 2" to 7" resolution 3 mm continuum and CO(J=1-0) line emission and near infrared Ks, H2, and [FeII] images toward the massive star forming region W75 N. The CO emission uncovers a complex morphology of multiple, overlapping outflows.
Baart E. E., Cabrit S., D. P. Stark, D. S. Shepherd, Dickel H. R., Ghinassi F., Gredel R., Hildebrand R. H., Hunt L. K., Hunter T. R., Koornneef J., Kramer C., L. Testi, Minier V., Moore T. J. T., Moore T. J. T., Moore T. J. T., Smith M. D., Smith M. D., Suttner G., Vanzi L., Walmsley C. M.   +21 more
core   +3 more sources

Variable Accretion Rates and Fluffy First Stars [PDF]

, 2012
We combine the output of hydrodynamical simulations of Population III star cluster formation with stellar evolution models, and calculate the evolution of protostars experiencing variable mass accretion rates due to interactions within a massive disk. We
Baraffe, Baraffe, Bate, Baumgardt, Bonnell, Bromm, Clark, Clark, Federrath, Fryer, Girichidis, Greif, Hilditch, Hosokawa, Hosokawa, Hosokawa, Hosokawa, Jappsen, Kazuyuki Omukai, Krumholz, Lajoie, Mac Low, Machida, Machida, McKee, Offner, Omukai, Omukai, Peters, Prieto, Ralf S. Klessen, Rowan J. Smith, Schmeja, Simon C. O. Glover, Smith, Stacy, Stacy, Stahler, Takashi Hosokawa, Tan, Turk, Vorobyov, Woosley, Wuchterl   +43 more
core   +1 more source

Early Planet Formation in Embedded Disks (eDisk). X. Compact Disks, Extended Infall, and a Fossil Outburst in the Class I Oph IRS43 Binary

The Astrophysical Journal, 2023
We present the first results from the Early Planet Formation in Embedded Disks Atacama Large Millimeter/submillimeter Array Large Program toward Oph IRS43, a binary system of solar mass protostars. The 1.3 mm dust continuum observations resolve a compact
Suchitra Narayanan, Jonathan P. Williams, John J. Tobin, Jes K. Jørgensen, Nagayoshi Ohashi, Zhe-Yu Daniel Lin, Merel L. R. van’t Hoff, Zhi-Yun Li, Adele L. Plunkett, Leslie W. Looney, Shigehisa Takakuwa, Hsi-Wei Yen, Yusuke Aso, Christian Flores, Jeong-Eun Lee, Shih-Ping Lai, Woojin Kwon, Itziar de Gregorio-Monsalvo, Rajeeb Sharma, Chang Won Lee   +19 more
doaj   +1 more source

An empirical model for protostellar collapse [PDF]

, 2000
We propose a new analytic model for the initial conditions of protostellar collapse in relatively isolated regions of star formation. The model is non-magnetic, and is based on a Plummer-like radial density profile as its initial condition.
Ward-Thompson, D., Whitworth, A. P.
core   +2 more sources

Observations of phosphorus-bearing molecules in the interstellar medium

Frontiers in Astronomy and Space Sciences
The chemistry of phosphorus (31P) in space is particularly significant due to the key role it plays in biochemistry on Earth. Utilising radio and infrared spectroscopic observations, several key phosphorus-containing molecules have been detected in ...
Francesco Fontani, Francesco Fontani, Francesco Fontani   +2 more
doaj   +1 more source

Subarcsecond resolution observations of warm water towards three deeply embedded low-mass protostars [PDF]

, 2012
Water is present during all stages of star formation: as ice in the cold outer parts of protostellar envelopes and dense inner regions of circumstellar disks, and as gas in the envelopes close to the protostars, in the upper layers of circumstellar disks
Attard, Bergin, Bisschop, Blake, Boogert, Bottinelli, Bottinelli, Brinch, Caselli, Ceccarelli, Ceccarelli, Ceccarelli, Cernicharo, Chandler, Charnley, Choi, Desmurs, Di Francesco, Draine, E. F. van Dishoeck, Enoch, Franklin, Fraser, Furuya, Garrod, Gensheimer, Gibb, Girart, Gutermuth, Harwit, Herbst, Herczeg, Hogerheijde, J. K. Jørgensen, Jacq, Jennings, Jørgensen, Jørgensen, Jørgensen, Jørgensen, Jørgensen, Jørgensen, Jørgensen, Jørgensen, Kristensen, Larson, Liseau, Looney, M. V. Persson, Maret, Marvel, Müller, Neufeld, Nisini, Pickett, Pontoppidan, Reipurth, Rodgers, Sandell, Sandell, van der Tak, van Dishoeck, van Dishoeck, Visser, Visser, Wakelam, Watson, Wilson   +67 more
core   +2 more sources

Safety of selective IL‐23p19 inhibitors for the treatment of psoriasis

Journal of the European Academy of Dermatology and Venereology, Volume 33, Issue 9, Page 1676-1684, September 2019., 2019
Abstract Psoriasis is a chronic disease that requires long‐term treatment. Consequently, understanding the safety and tolerability of any potential treatment over time is critical to effective prescribing. The biologic agents currently available for the treatment of psoriasis target a number of different inflammatory cytokines involved in psoriasis ...
J.J. Crowley, R.B. Warren, J.C. Cather
wiley   +1 more source

A VLA search for young protostars embedded in dense cores [PDF]

, 2006
Four dense cores, L1582A, L1689A, B133 and B68, classified as prestellar in terms of the absence of detectable NIR emission, are observed at radio wavelengths to investigate whether they nurture very young protostars.
A. P. Whitworth, André, André, André, André, André, Anglada, Beltrán, Bontemps, Bontemps, Bourke, Bourke, Cassen, Condon, Condon, Curiel, Curiel, Curiel, D. Stamatellos, D. Ward-Thompson, Dame, Douglas, Eiroa, Feigelson, Goodwin, Griffith, Harvey, Huard, Kirk, Leous, Martin, Myers, Neufeld, Neufeld, Nutter, Raga, Rodríguez, Rodríguez, Rodríguez, S. Bontemps, Stamatellos, Stamatellos, Ward-Thompson, Ward-Thompson, Ward-Thompson, Winkler, Young   +46 more
core   +6 more sources