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相关论文: Complex molecules toward low-mass protostars: the …

200 篇论文

Sufficiently massive clumps of molecular gas collapse under self-gravity and fragment to spawn a cluster of stars that have a range of masses. We investigate observationally the early stages of formation of a stellar cluster in a massive…

太阳与恒星天体物理 · 物理学 2015-05-27 Qizhou Zhang , Ke Wang , Xing Lu , Izaskun Jimenez-Serra

Orion KL is one of the prime templates of astrochemical and prebiotic chemical studies. We wish to explore more organic molecules with increasing complexity in this region. In particular, we have searched for one of the most complex organic…

太阳与恒星天体物理 · 物理学 2019-02-13 Yaping Peng , V. M. Rivilla , Li Zhang , J. X. Ge , Bing Zhou

We performed high-sensitivity mapping observations of several complex organic molecules around Sagittarius B2 with ARO 12m telescope at 3-mm wavelength. Based on their spatial distribution, molecules can be classified as either "extended"…

太阳与恒星天体物理 · 物理学 2020-01-15 Juan Li , Junzhi Wang , Haihua Qiao , Donghui Quan , Min Fang , Fujun Du , Fei Li , Zhiqiang Shen , Shanghuo Li , Di Li , Yong Shi , Zhiyu Zhang , Jiangshui Zhang

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. This discrepancy might come from the large…

太阳与恒星天体物理 · 物理学 2015-05-20 Vianney Taquet , Ana López-Sepulcre , Cecilia Ceccarelli , Roberto Neri , Claudine Kahane , Steven B. Charnley

The Large Magellanic Cloud (LMC) provides a key laboratory for exploring the diversity of star formation and interstellar chemistry under subsolar metallicity conditions. We present the results of a hot core survey toward 30 massive…

星系天体物理 · 物理学 2026-02-05 Takashi Shimonishi , Kei E. I. Tanaka , Yichen Zhang , Kenji Furuya , Yu Cheng , Asako Sato

This work aims to constrain the abundances of interstellar amides, by searching for this group of prebiotic molecules in the intermediate-mass protostar Serpens SMM1-a. ALMA observations are conducted toward Serpens SMM1. A spectrum is…

We investigate the chemical segregation of complex O-bearing species (including the largest and most complex ones detected to date in space) towards Orion KL, the closest high-mass star-forming region. The molecular line images obtained…

星系天体物理 · 物理学 2018-12-05 Belén Tercero , Sara Cuadrado , Alicia López , Nathalie Brouillet , Didier Despois , José Cernicharo

Molecular inventories in starless cores are powerful tools for probing the physical and chemical structures at the earliest stages of star formation. Wide-band spectral scans are invaluable for obtaining a comprehensive view of the chemical…

Protoplanetary disks around luminous young A-type stars are prime observational laboratories to determine the abundances of complex organic molecules (COMs) present during planet formation. In contrast to their lower stellar mass…

Here we present high spatial resolution (<1 arcsecond) observations of molecular emission in Orion-KL conducted using the Combined Array for Research in Millimeter-Wave Astronomy (CARMA). This work was motivated by recent millimeter…

星系天体物理 · 物理学 2015-06-05 Susanna L. Widicus Weaver , Douglas N. Friedel

We report the results of subparsec-scale submillimeter observations towards an embedded high-mass young stellar object in the Small Magellanic Cloud (SMC) with ALMA. Complementary infrared data obtained with the AKARI satellite and the…

Simple molecules like H2CO and CH3OH in protoplanetary disks are the starting point for the production of more complex organic molecules. So far, the observed chemical complexity in disks has been limited due to freeze out of molecules onto…

地球与行星天体物理 · 物理学 2015-06-18 Nienke van der Marel , Ewine F. van Dishoeck , Simon Bruderer , Tim A. van Kempen

Hot corinos are compact regions around solar-mass protostellar objects that are very rich in interstellar complex organic molecules (iCOMs). They are believed to represent the very early phases of our Solar System's birth, which was very…

We report the first extragalactic detection of the complex organic molecules (COMs) dimethyl ether (CH$_3$OCH$_3$) and methyl formate (CH$_3$OCHO) with the Atacama Large Millimeter/submillimeter Array (ALMA). These COMs together with their…

Hot molecular cores (HMCs), the cradles of massive stars, are the most chemically rich sources in the Galaxy. The typical masses of these cores (few hundreds of solar masses) make them the most important reservoirs of complex organic…

太阳与恒星天体物理 · 物理学 2018-06-22 Maria T. Beltrán , Víctor M. Rivilla

Complex organic molecules (COMs) in protoplanetary disks are key to understanding the origin of volatiles in comets in our solar system, yet the chemistry of COMs in protoplanetary disks remains poorly understood. Here we present Atacama…

地球与行星天体物理 · 物理学 2023-12-05 Yoshihide Yamato , Shota Notsu , Yuri Aikawa , Yuki Okoda , Hideko Nomura , Nami Sakai

The Kleinmann-Low nebula in Orion (Orion-KL) is the nearest example of a high-mass star-forming environment. For the first time, we complemented 1.3 mm Submillimeter Array (SMA) interferometric line survey with IRAM 30 m single-dish…

太阳与恒星天体物理 · 物理学 2016-05-04 S. Feng , H. Beuther , T. Henning , D. Semenov , Aina. Palau , E. A. C. Mills

Complex organic molecules, such as propylene (CH3CHCH2), are detected in molecular clouds (such as TMC1) with high fractional abundances (~2.10^{-9}, relative to hydrogen) that cannot be explained by gas-phase chemical reactions under…

星系天体物理 · 物理学 2015-06-16 J. M. C. Rawlings , D. A. Williams , S. Viti , C. Cecchi-Pestellini

The complex organic molecules (COMs) detected in star-forming regions are the precursors of the prebiotic molecules that can lead to the emergence of life. By studying COMs in more evolved protoplanetary disks we can gain a better…

Context. Outflows provide indirect means to get an insight on diverse star formation associated phenomena. On scales of individual protostellar cores, outflows combined with intrinsic core properties can be used to study the mass…

星系天体物理 · 物理学 2015-05-19 O. Dionatos , B. Nisini , C. Codella , T. Giannini