Results 71 to 80 of about 22,763 (197)
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
High Resolution Near-Infrared Spectra of Protostars [PDF]
, 2000 We present new high resolution (R = 21,000) near-infrared (2 microns) spectroscopic observations of a sample of Class I and flat-spectrum protostellar objects in the rho Ophiuchi dark cloud.
Casali M. M. +3 more
core +2 more sources
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. +9 more
openaire +2 more sources
The JWST-NIRCam View of Sagittarius C. I. Massive Star Formation and Protostellar Outflows
The Astrophysical JournalWe 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 +16 more
doaj +1 more source
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 +8 more
doaj +1 more source
Constraining the abundances of complex organics in the inner regions of solar-type protostars [PDF]
, 2015 The high abundances of Complex Organic Molecules (COMs) with respect to methanol, the most abundant COM, detected towards low-mass protostars, tend to be underpredicted by astrochemical models.
Ceccarelli, Cecilia +5 more
core +3 more sources
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 +11 more
openaire +2 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 +15 more
doaj +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 +80 more
core +5 more sources
Studying the Effect of Radiation Pressure on Evolution of a Population III Stellar Cluster
The Astrophysical JournalRecent numerical simulations have shown that the unstable disk within the central regime of the primordial gas cloud fragments to form multiple protostars on several scales.
Sukalpa Kundu, Jayanta Dutta
doaj +1 more source