Results 11 to 20 of about 41,054 (268)

XUE: Molecular Inventory in the Inner Region of an Extremely Irradiated Protoplanetary Disk

The Astrophysical Journal Letters, 2023
We present the first results of the eXtreme UV Environments (XUE) James Webb Space Telescope (JWST) program, which focuses on the characterization of planet-forming disks in massive star-forming regions.
María Claudia Ramírez-Tannus, Arjan Bik, Lars Cuijpers, Rens Waters, Christiane Göppl, Thomas Henning, Inga Kamp, Thomas Preibisch, Konstantin V. Getman, Germán Chaparro, Pablo Cuartas-Restrepo, Alex de Koter, Eric D. Feigelson, Sierra L. Grant, Thomas J. Haworth, Sebastián Hernández, Michael A. Kuhn, Giulia Perotti, Matthew S. Povich, Megan Reiter, Veronica Roccatagliata, Elena Sabbi, Benoît Tabone, Andrew J. Winter, Anna F. McLeod, Roy van Boekel, Sierk E. van Terwisga   +26 more
doaj   +1 more source

Anomalous Microwave Emission from Star Forming Regions

Advances in Astronomy, 2013
The evidence for microwave emission from spinning dust grains has been strengthened considerably by its detection in a number of discrete astrophysical objects associated with star formation.
Anna M. M. Scaife
doaj   +1 more source

Exploring Stellar Cluster and Feedback-driven Star Formation in the Galactic Mid-infrared Bubble [HKS2019] E70

The Astrophysical Journal, 2023
We present a comprehensive analysis of the Galactic mid-infrared bubble [HKS2019] E70 (E70) by adopting a multiwavelength approach to understand the physical environment and star formation scenario around it.
Aayushi Verma, Saurabh Sharma, Kshitiz K. Mallick, Lokesh Dewangan, Devendra K. Ojha, Ram Kesh Yadav, Rakesh Pandey, Arpan Ghosh, Harmeen Kaur, Neelam Panwar, Tarak Chand   +10 more
doaj   +1 more source

The Detection of Higher-order Millimeter Hydrogen Recombination Lines in the Large Magellanic Cloud

The Astrophysical Journal, 2023
We report the first extragalactic detection of the higher-order millimeter hydrogen recombination lines (Δ n > 2). The γ -, ϵ -, and η -transitions have been detected toward the millimeter continuum source N 105–1 A in the star-forming region N 105 in ...
Marta Sewiło, Kazuki Tokuda, Stan E. Kurtz, Steven B. Charnley, Thomas Möller, Jennifer Wiseman, C.-H. Rosie Chen, Remy Indebetouw, Álvaro Sánchez-Monge, Kei E. I. Tanaka, Peter Schilke, Toshikazu Onishi, Naoto Harada   +12 more
doaj   +1 more source

Dense Outflowing Molecular Gas in Massive Star-forming Regions

The Astronomical Journal
Dense outflowing gas, traced by transitions of molecules with large dipole moment, is important for understanding mass loss and feedback of massive star formation.
Yani Xu, Junzhi Wang, Shu Liu, Juan Li, Yuqiang Li, Rui Luo, Chao Ou, Siqi Zheng, Yijia Liu   +8 more
doaj   +1 more source

Combining transient dynamics and logistic‐asymptotic growth to study the recovery of two seabird populations after rat eradication

Population Ecology, EarlyView.
This study examines the demographic dynamics of two seabird populations on Tromelin Island, 15 years after the eradication of brown rats. The results indicate that these populations are in good health and are expected to continue growing until breeding sites are saturated in about a century.
Merlène Saunier, Christophe Barbraud, Maxime Amy, Sabine Orlowski, Jean Hivert, Gabrielle Dicque, Matthieu Le Corre   +6 more
wiley   +1 more source

Unusually Powerful Flare Phenomenon of the Water Maser in W51 and the Possibility of Detecting Gravitational Radiation from It

The Astrophysical Journal, 2023
Because of detailed monitoring of the 22.2 GHz water maser, carried out from 2021 October to 2023 May, a very powerful flare phenomenon was detected in the galactic object W51 near the radial velocity of 60 km s ^−1 with the amplitude of 140 kJy.
A. E. Volvach, L. N. Volvach, M. G. Larionov   +2 more
doaj   +1 more source

occumb: An R package for site occupancy modeling of eDNA metabarcoding data

Population Ecology, EarlyView.
This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley   +1 more source

Thermal Effects of Ambipolar Diffusion during the Gravitational Collapse of a Radiative Cooling Filament

The Astrophysical Journal
In this study, we consider the effects of ambipolar diffusion during the gravitational collapse of a radiative cooling filamentary molecular cloud. Two separate configurations of magnetic field, i.e., axial and toroidal, are considered in the presence of
Mahmoud Gholipour
doaj   +1 more source

The birth environment of planetary systems [PDF]

Royal Society Open Science, 2020
Star and planet formation are inextricably linked. In the earliest phases of the collapse of a protostar, a disc forms around the young star and such discs are observed for the first several million years of a star’s life.
Richard J. Parker
doaj   +1 more source