Results 81 to 90 of about 4,978 (213)

Class 0 protostars in the Perseus molecular cloud: A correlation between the youngest protostars and the dense gas distribution [PDF]

, 2014
We use PACS and SPIRE continuum data at 160 μm, 250 μm, 350 μm, and 500 μm from the Herschel Gould Belt Survey to sample seven clumps in Perseus: B1, B1-E, B5, IC 348, L1448, L1455, and NGC 1333.
Hill T, Sadavoy, S. I., Maury A, Nguy˜ên-Lu'o'ng Q, Hennemann, M., Bontemps, Sylvain, Könyves V, Motte F, Arzoumanian D, Benedettini, M., Pezzuto, S., Di Francesco, J., White GJ, Elia, D., Louvet F, Louvet, F., Di Francesco J, Bontemps, S., Koenyves, V., Pezzuto S, Men'Shchikov, A., Maury, A., Benedettini M, Hill, T., André P, Hennemann M, Louvet, François, Bernard, J.-P., Peretto, Nicolas, Arzoumanian, D., Peretto, N., Roy, A., Sadavoy SI, Motte, F., Nguyen-Luong, Q., Elia D, Könyves, Vera, Bernard, J. -P., Peretto N, Men'shchikov A, Roy A, White, G. J., Schneider N, Bontemps S, Schneider, N., Bernard J, Könyves, V., André, PH., Nguỹên-Lu'O'Ng, Q.   +48 more
core   +1 more source

Key Physical Parameters Influencing Fragmentation and Multiplicity in Dense Cores of Orion A

The Astrophysical Journal
When dense cores in molecular clouds or filamentary structures collapse and form protostars, they may undergo fragmentation and form binary or multiple systems.
Jo-Shui Kao, Hsi-Wei Yen, Shih-Ping Lai
doaj   +1 more source

The Agn As A Protostar

, 2017
AGN - Protostar ...
openaire   +2 more sources

Investigating Protostellar Accretion-driven Outflows across the Mass Spectrum: JWST NIRSpec Integral Field Unit 3–5 μm Spectral Mapping of Five Young Protostars

The Astrophysical Journal
Investigating Protostellar Accretion is a Cycle 1 JWST program using the NIRSpec+MIRI integral field units to obtain 2.9–28 μ m spectral cubes of five young protostars with luminosities of 0.2–10,000 L _⊙ in their primary accretion phase.
Samuel A. Federman, S. Thomas Megeath, Adam E. Rubinstein, Robert Gutermuth, Mayank Narang, Himanshu Tyagi, P. Manoj, Guillem Anglada, Prabhani Atnagulov, Henrik Beuther, Tyler L. Bourke, Nashanty Brunken, Alessio Caratti o Garatti, Neal J. Evans II, William J. Fischer, Elise Furlan, Joel D. Green, Nolan Habel, Lee Hartmann, Nicole Karnath, Pamela Klaassen, Hendrik Linz, Leslie W. Looney, Mayra Osorio, James Muzerolle Page, Pooneh Nazari, Riwaj Pokhrel, Rohan Rahatgaonkar, Will R. M. Rocha, Patrick Sheehan, Katerina Slavicinska, Thomas Stanke, Amelia M. Stutz, John J. Tobin, Lukasz Tychoniec, Ewine F. Van Dishoeck, Dan M. Watson, Scott Wolk, Yao-Lun Yang   +38 more
doaj   +1 more source

The Structure and Kinematics of Three Class 0 Protostellar Jets from JWST

The Astrophysical Journal
We present observations of jets within 2000 au of three deeply embedded protostars using 2.9–27 μ m observations with JWST. These observations show the morphologies and kinematics of the collimated jets from three protostars, the low-mass Class 0 ...
Samuel A. Federman, S. Thomas Megeath, Alessio Caratti o Garatti, Mayank Narang, Himanshu Tyagi, Neal J. Evans II, Carolin N. Kimmig, Łukasz Tychoniec, Henrik Beuther, Amelia Stutz, P. Manoj, Robert Gutermuth, Tyler L. Bourke, Joel Green, Lee Hartmann, Pamela Klaassen, Rolf Kuiper, Leslie W. Looney, Pooneh Nazari, Thomas Stanke, Dan M. Watson, Yao-Lun Yang, Wafa Zakri   +22 more
doaj   +1 more source

Detections of Compact Radio Continuum toward Methanol Maser Rings Using the VLA

The Astrophysical Journal
High-mass protostars are deeply embedded in dust inside their natal cores and are not easily detectable. However, maser emission at centimeter wavelengths, owing to its high brightness, enables us to study gas kinematics in protostars’ circumstellar ...
Anna Bartkiewicz, Olga Bayandina, Alberto Sanna, Marian Szymczak, Luca Moscadelli, Agnieszka Kobak, Huib Jan van Langevelde, Ashwin Varma   +7 more
doaj   +1 more source

Tracking Star-forming Cores as Mass Reservoirs in Clustered and Isolated Regions Using Numerical Passive Tracer Particles

The Astrophysical Journal
Understanding the physical properties of star-forming cores as mass reservoirs for protostars and the impact of turbulence is crucial in star formation studies.
Shingo Nozaki, Hajime Fukushima, Kazuki Tokuda, Masahiro N. Machida   +3 more
doaj   +1 more source

Physical structure of the envelopes of intermediate-mass protostars

, 2010
International audienceContext. Intermediate mass protostars provide a bridge between low- and high-mass protostars. Furthermore, they are an important component of the UV interstellar radiation field.
Tafalla, M., B. Lefloch, T. Alonso-Albi, Lefloch, B., D. Johnstone, F. Wyrowski, A. Fuente, N. Crimier, R. Plume, J. R. Rizzo, M. Tafalla, Caselli, P., Maret, S., E. van Dishoeck, Kahane, C., Rizzo, J. R., van Dishoeck, E., P. Caselli, Johnstone, D., Alonso-Albi, T., S. Maret, C. Ceccarelli, C. Kahane, Crimier, N., Wyrowski, F., Ceccarelli, C., Fuente, A., Plume, R.   +27 more
core   +1 more source

Disk Wind Feedback from High-mass Protostars. IV. Shock-ionized Jets

The Astrophysical Journal
Massive protostars launch accretion-powered, magnetically collimated outflows, which play crucial roles in the dynamics and diagnostics of the star formation process. Here we calculate the shock heating and resulting free–free radio emission in numerical
Emiko C. Gardiner, Jonathan C. Tan, Jan E. Staff, Jon P. Ramsey, Yichen Zhang, Kei E. I. Tanaka   +5 more
doaj   +1 more source

Outflow interaction in Cep-E

Astronomy & Astrophysics
Context. There is clear observational evidence that the main Class 0/I stages of the star formation process are associated with powerful collimated outflows (jets), which sometimes propagate up to distances as large as 104−5 au in molecular clouds ...
Rodríguez-González A., Rivera-Ortiz P. R., Meliani Z., Alquicira-Peláez E., Durán A., Zapata Luis A.   +5 more
doaj   +1 more source