Results 101 to 110 of about 792,921 (206)

A Dense Molecular Ringlike Structure in Gaseous CO Depletion Region G34.74−0.12

The Astrophysical Journal Letters
We report the discovery of a dense molecular ringlike structure in a dense (10 ^5 cm ^−3 ), cold (parsec-scale CO depletion at a factor of 5), and young (10 ^4 yr) star-forming region G34.74−0.12, revealed by C ^18 O (2−1), HNC (1−0), and N _2 H ^+ (1−0)
Shuting Lin, Siyi Feng, Fengwei Xu, Ke Wang, Patricio Sanhueza, Junzhi Wang, Zhi-Yu Zhang, Yichen Zhang, Kaho Morii, Hauyu Baobab Liu, Sheng-Yuan Liu, Lile Wang, Giovanni Sabatini, Hui Li, Willem Baan, Zhi-Kai Zhu, Shanghuo Li   +16 more
doaj   +1 more source

The ALMA Survey of 70 μm Dark High-mass Clumps in Early Stages (ASHES). XII. Unanchored Forked Stream in the Propagating Path of a Protostellar Outflow

The Astrophysical Journal
Outflows are key indicators of ongoing star formation. We report the discovery of an unanchored forked stream within the propagating path of an extremely young protostellar outflow in the 70 μ m-dark clump G34.74-0.12, based on Atacama Large Millimeter ...
Shuting Lin, Siyi Feng, Patricio Sanhueza, Ke Wang, Zhi-Yu Zhang, Yichen Zhang, Fengwei Xu, Junzhi Wang, Kaho Morii, Hauyu Baobab Liu, Sheng-Yuan Liu, Lile Wang, Hui Li, Daniel Tafoya, Willem Baan, Shanghuo Li, Giovanni Sabatini   +16 more
doaj   +1 more source

PHOSPHORUS CHEMISTRY IN DENSE INTERSTELLAR CLOUDS

, 1991
I have used recent laboratory studies on the reactions of the phosphorus hydride ions, PH(n)+ (n = 0-4) to construct a new model of phosphorus chemistry in interstellar clouds.
Millar, TJ
core   +2 more sources

MIAO-ALMA: Shocks and Protostellar Outflows in 70 μm Dark Clumps with L/M < 1 L⊙/M⊙

The Astronomical Journal
To investigate the initial conditions of high-mass star-forming regions, we use SiO (2–1) emission to trace early shock-related kinematics toward 16 70  μ m dark and massive clumps with luminosity-to-mass ratios ( L / M ) 2 km s ^−1 ) SiO (2–1) features ...
Shuting Lin, Siyi Feng, Junzhi Wang, Shanghuo Li, Dan Miao, Zhi-Yu Zhang, Sheng-Yuan Liu, Nami Sakai, Fengwei Xu, Hauyu Baobab Liu, Henrik Beuther, Di Li, Qizhou Zhang, Tie Liu, Patricio Sanhueza, Olli Sipilä, Ken’ichi Tatematsu, Jaime E. Pineda, Xing Lu   +18 more
doaj   +1 more source

Ammonia in Dark Interstellar Clouds

The Astrophysical Journal, 1973
A. C. Cheung, M. F. Chui, D. Matsakis, C. H. Townes, K. S. Yngvesson   +4 more
openaire   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

Water Maser Detections toward 70 μm Infrared Dark Clumps at Early Star Formation Stage

The Astrophysical Journal Letters
Water masers provided powerful probes of shocked gas and protostellar activity during the early stages of star formation. Using Very Large Array K -band observations of the 22 GHz water line, we report the first detections of water masers toward dense ...
Chao Ou, Shanghuo Li, Junzhi Wang, Ian W. Stephens, Yuqiang Li   +4 more
doaj   +1 more source

CN in dark interstellar clouds

The Astrophysical Journal, 1984
R. M. Crutcher, E. Churchwell, L. M. Ziurys   +2 more
openaire   +1 more source

Physical conditions in CaFe interstellar clouds

, 2007
Interstellar clouds that exhibit strong Ca 
P. Gnaciński, M. Krogulec
core   +1 more source

Bringing the Norma Dark Cloud to Light in X-Rays

The Astronomical Journal
The filamentary dark cloud complex in Norma reveals signs of active low-mass star formation including protostars, H α emission line stars, Herbig–Haro objects, and the eruptive FU Orionis-like star V346 Nor.
Stephen L. Skinner, Manuel Güdel, Luisa M. Rebull   +2 more
doaj   +1 more source