Detection of Photospheric Features in the Near-infrared Spectrum of a Class 0 Protostar [PDF]
Astrophysical Journal, 2018 We present a near-infrared K-band R ≃ 1500 Keck spectrum of S68N, a Class 0 protostar in the Serpens molecular cloud. The spectrum shows a very red continuum, CO absorption bands, weak or nonexistent atomic metal absorptions, and H2 emission lines.
T. Greene, M. Gully-Santiago, M. Barsony
semanticscholar +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
Formation of Dust Clumps with Sub-Jupiter Mass and Cold Shadowed Region in Gravitationally Unstable Disk around Class 0/I Protostar in L1527 IRS [PDF]
, 2022 Satoshi Ohashi +6 more
openalex +1 more source
CH3OH Thermal Lines Traces 6.7 GHz CH3OH Maser Variation of High-mass Protostar G353.273+0.641
The Astrophysical JournalThis study reports an analysis of the 6.7 GHz CH _3 OH maser in the high-mass protostar G353.273+0.641 (G353), utilizing data from the Tianma Radio Telescope.
Shi-Min Song +3 more
doaj +1 more source
The JCMT Transient Survey: Detection of Submillimeter Variability in a Class I Protostar EC 53 in Serpens Main [PDF]
, 2017 During the protostellar phase of stellar evolution, accretion onto the star is expected to be variable, but this suspected variability has been difficult to detect because protostars are deeply embedded.
H. Yoo +7 more
semanticscholar +1 more source
Effect of Magnetic Field on the Accretion Phase of Population III Star Formation
The Astrophysical JournalWe examine the impact of the magnetic field on Population III star formation by varying its strength. We perform simulations with magnetic field strengths ranging from 10 ^−20 G to 10 ^−4 G, in addition to a model without a magnetic field.
Masahiro N. Machida +2 more
doaj +1 more source
The Astrophysical Journal, 2023 We present a near-infrared H- band polarimetric study toward the S235 e2s3 protostar, obtained using the POLICAN instrument on the 2.1 m OAGH telescope. The images reveal a bipolar outflow with a total length of about 0.5 pc.
R. Devaraj +5 more
doaj +1 more source
Detection of CH3SH in protostar IRAS 16293-2422 [PDF]
, 2016 The nature of the main sulphur reservoir in star forming regions is a long standing mystery. The observed abundance of sulphur-bearing species in dense clouds is only about 0.1 per cent of the same quantity in diffuse clouds.
L. Majumdar +6 more
semanticscholar +1 more source
The Astrophysical Journal, 2023 There is growing evidence that high-mass star formation and hub-filament systems (HFS) are intricately linked. The gas kinematics along the filaments and the forming high-mass star(s) in the central hub are in excellent agreement with the new generation ...
Dongting Yang +30 more
doaj +1 more source
Detection of methyl isocyanate (CH3NCO) in a solar-type protostar [PDF]
, 2017 We report the detection of the prebiotic molecule CH3NCO in a solar-type protostar, IRAS16293-2422 B. A significant abundance of this species on the surface of the comet 67P/Churyumov-Gerasimenko has been proposed, and it has recently been detected in ...
R. Mart'in-Dom'enech +6 more
semanticscholar +1 more source