Results 71 to 80 of about 25,326 (243)

Star formation in Perseus. IV. Mass dependent evolution of dense cores [PDF]

, 2008
In our SCUBA survey of Perseus, we find that the fraction of protostellar cores increases towards higher masses and the most massive cores are all protostellar.
Fuller, Gary, Hatchell, Jennifer
core   +3 more sources

The JWST-NIRCam View of Sagittarius C. I. Massive Star Formation and Protostellar Outflows

The Astrophysical Journal
We present James Webb Space Telescope (JWST) Near Infrared Camera observations of the massive star-forming molecular cloud Sagittarius C (Sgr C) in the Central Molecular Zone (CMZ).
Samuel Crowe, Rubén Fedriani, Jonathan C. Tan, Alva Kinman, Yichen Zhang, Morten Andersen, Lucía Bravo Ferres, Francisco Nogueras-Lara, Rainer Schödel, John Bally, Adam Ginsburg, Yu Cheng, Yao-Lun Yang, Sarah Kendrew, Chi-Yan Law, Joseph Armstrong, Zhi-Yun Li   +16 more
doaj   +1 more source

Limitations of the modified blackbody fit method for determining molecular cloud properties

Astronomische Nachrichten, Volume 345, Issue 4, May 2024.
Abstract Achieving a comprehensive understanding of the star and planet formation process is one of the fundamental tasks of astrophysics, requiring detailed knowledge of the physical conditions during the different phases of this process. During the earliest stages, that is, concerning physical processes in molecular clouds and filaments, the column ...
Niko Zielinski, Sebastian Wolf
wiley   +1 more source

The earliest phases of high-mass star formation: a 3 square degree millimeter continuum mapping of Cygnus X [PDF]

, 2007
We have made an extensive 1.2mm continuum mosaicing study of the Cygnus X molecular cloud complex using the MAMBO cameras at the IRAM 30 m telescope. We then compared our mm maps with mid-IR images, and have made SiO(2-1) follow-up observations of the ...
Abergel, André, Argon, Bertoldi, Beuther, Bonnell, Bontemps, Bontemps, Braz, Bronfman, Brown, Carey, Casoli, Chandler, Chandler, D. Broguière, Davis, Downes, Emerson, Evans, Evans, Evans, F. Motte, Faúndez, Hanson, Haschick, Hatchell, Helmich, Hill, K. M. Menten, Kenyon, Kirk, Knödlseder, Kramer, Kreysa, Krumholz, Kurtz, Leung, Marston, Martín-Pintado, Minier, Molinari, Molinari, Molinari, Mookerjea, Motte, Motte, Motte, N. Schneider, Nisini, Onishi, Ossenkopf, P. Schilke, Palla, Palla, Pestalozzi, Pipher, Rathborne, Reid, Richer, S. Bontemps, Sandell, Schilke, Schneider, Schneider, Shadmehri, Shepherd, Smith, Sridharan, Stutzki, Trinidad, Uyaniker, Valdettaro, Vallée, van der Tak, Ward-Thompson, Wendker, Wood, Yorke, Ziurys, Zoonematkermani   +80 more
core   +5 more sources

The SOFIA Massive (SOMA) Star Formation Survey. IV. Isolated Protostars

The Astrophysical Journal, 2022
We present ∼10–40 μ m SOFIA-FORCAST images of 11 isolated protostars as part of the SOFIA Massive (SOMA) Star Formation Survey, with this morphological classification based on 37 μ m imaging.
Rubén Fedriani, Jonathan C. Tan, Zoie Telkamp, Yichen Zhang, Yao-Lun Yang, Mengyao Liu, James M. De Buizer, Chi-Yan Law, Maria T. Beltran, Viviana Rosero, Kei E. I. Tanaka, Giuliana Cosentino, Prasanta Gorai, Juan Farias, Jan E. Staff, Barbara Whitney   +15 more
doaj   +1 more source

METHYL CYANIDE OBSERVATIONS TOWARD MASSIVE PROTOSTARS [PDF]

The Astrophysical Journal Supplement Series, 2013
We report the results of a survey in the CH3CN J= 12-11 transition toward a sample of massive proto-stellar candidates. The observations were carried out with the 10 m Submillimeter telescope on Mount Graham, AZ. We detected this molecular line in 9 out of 21 observed sources. In six cases this is the first detection of this transition.
Araya, E., Bieging, J., Kurtz, S., Hofner, P., Bieging, J., Araya, E., Kurtz, S., Rosero, V., Hofner, P., Rosero, V.   +9 more
openaire   +2 more sources

The Small-Scale Physical Structure and Fragmentation Difference of Two Embedded Intermediate Mass Protostars in Orion [PDF]

, 2012
Intermediate-mass (IM) protostars, the bridge between the very common solar-like protostars and the more massive, but rarer, O and B stars, can only be studied at high physical spatial resolutions in a handful of clouds.
A. Fuente, Adams, Adams, Andrews, Arce, Bate, Bergin, Beuther, Beuther, Boss, Boss, Bottinelli, Brogan, Bruderer, Carrasco-González, Chambers, Cyganowski, D. Johnstone, De Buizer, Di Francesco, Dunham, Enoch, Evans, Gutermuth, Johnstone, Johnstone, Jørgensen, Klessen, Krumholz, Krumholz, Kuiper, Longmore, McKee, Ossenkopf, Pon, Ragan, Robitaille, Robitaille, S. N. Longmore, Sadavoy, Schnee, Seth, Shinnaga, Shirley, Shirley, Skinner, Stanke, Stojimirović, T. A. van Kempen, T. Pillai, Torrelles, Trinidad, Vorobyov, Vorobyov, Vázquez-Semadeni, Zavagno   +55 more
core   +2 more sources

JWST Peers into the Class I Protostar TMC1A: Atomic Jet and Spatially Resolved Dissociative Shock Region

The Astrophysical Journal Letters, 2023
Outflows and winds launched from young stars play a crucial role in the evolution of protostars and the early stages of planet formation. However, the specific details of the mechanism behind these phenomena, including how they affect the protoplanetary ...
D. Harsono, P. Bjerkeli, J. P. Ramsey, K. M. Pontoppidan, L. E. Kristensen, J. K. Jørgensen, H. Calcutt, Z-Y. Li, A. Plunkett   +8 more
doaj   +1 more source

EVOLUTION OF MASS OUTFLOW IN PROTOSTARS [PDF]

The Astrophysical Journal, 2016
ABSTRACT We have surveyed 84 Class 0, Class I, and flat-spectrum protostars in mid-infrared [Si ii], [Fe ii], and [S i] line emission, and 11 of these in far-infrared [O i] emission. We use the results to derive their mass outflow rates, .
Dan M. Watson, Nuria P. Calvet, William J. Fischer, W. J. Forrest, P. Manoj, S. Thomas Megeath, Gary J. Melnick, Joan Najita, David A. Neufeld, Patrick D. Sheehan, Amelia M. Stutz, John J. Tobin   +11 more
openaire   +2 more sources

A Keplerian Circumbinary Disk around the Protobinary System L1551 NE [PDF]

, 2012
We present SubMillimeter-Array observations of a Keplerian disk around the Class I protobinary system L1551 NE in 335 GHz continuum emission and submillimeter line emission in 13CO (J=3-2) and C18O (J=3-2) at a resolution of ~120 x 80 AU.
Andrews, Andrews, Bate, Chen, Crutcher, Delfosse, Duquennoy, Enoch, Enoch, Froebrich, Fuller, Guilloteau, Guilloteau, Harvey, Harvey, Hayashi, Ho, Hogerheijde, Jeremy Lim, Kazuya Saigo, Lim, Loinard, Looney, Looney, Machida, Machida, Machida, Masao Saito, Mathieu, Mellon, Mellon, Momose, Moriarty-Schieven, Moriarty-Schieven, Nimesh A. Patel, Ochi, Ohashi, Ossenkopf, Reipurth, Reipurth, Rodríguez, Sault, Schaefer, Shigehisa Takakuwa, T. K. Sridharan, Takakuwa, Takakuwa, Takakuwa, Vorobyov, Yen, Yen, Yokogawa   +51 more
core   +3 more sources