Results 51 to 60 of about 1,150 (163)

The Pre-outburst Properties of the FU Ori Object HBC 722

The Astrophysical Journal Letters
FU Ori outbursts are thought to play an important role in stellar assembly and the evolution of protoplanetary disks. However, the progenitor young stellar objects are largely uncharacterized.
Gregory J. Herczeg, Bo Reipurth
doaj   +1 more source

An Outbursting Protostar: The Environment of L1251 VLA 6

The Astrophysical Journal
Young protostars that undergo episodic accretion can provide insight into the impact on their circumstellar environments while matter is accreted from the disk onto the protostar.
Ava Nederlander, Adele Plunkett, Antonio Hales, Ágnes Kóspál, Jacob A. White, Makoto A. Johnstone, Mária Kun, Péter Ábrahám, Anna G. Hughes   +8 more
doaj   +1 more source

The Early History of Stellar Spin: the Theory of Accretion onto Young Stellar Objects

EPJ Web of Conferences, 2014
The interaction of the magnetospheres of forming stars with their surrounding protostellar disks results in magnetospheric accretion flow onto the star. How is the associated angular momentum of accreting material channelled? The resolution of this issue
Pudritz Ralph E., Matt Sean
doaj   +1 more source

Molecular Bubble and Outflow in S Mon Revealed by Multiband Data Sets

The Astrophysical Journal
We identify a molecular bubble, and study the star formation and its feedback in the S Mon region, using multiple molecular lines, young stellar objects (YSOs), and infrared data.
Dejian Liu, Ye Xu, YingJie Li, Zehao Lin, Chaojie Hao, WenJin Yang, Jingjing Li, Xinrong Liu, Yiwei Dong, Shuaibo Bian, Deyun Kong   +10 more
doaj   +1 more source

The Outflow of The Protostar in B335. I.

The Astronomical Journal
The isolated globule B335 contains a single, low-luminosity Class 0 protostar associated with a bipolar nebula and outflow system seen nearly perpendicular to its axis.
Klaus W. Hodapp, Laurie L. Chu, Thomas Greene, Michael R. Meyer, Doug Johnstone, Marcia J. Rieke, John Stansberry, Martha Boyer, Charles Beichman, Scott Horner, Tom Roellig, George Rieke, Eric T. Young   +12 more
doaj   +1 more source

PROJECT-J: The Shocking H2 Outflow from HH 46

The Astrophysical Journal
We analyze the H _2 emission observed in the HH 46 Class I system as part of PROtostellar JEts Cradle Tested with JWST (PROJECT-J), to investigate the origin and excitation of the warm molecular outflow. We used NIRSpec and MIRI spectral maps (1.6–27.9 μ
Maria Gabriela Navarro, Brunella Nisini, Teresa Giannini, Patrick J. Kavanagh, Alessio Caratti o Garatti, Simone Antoniucci, Hector G. Arce, Francesca Bacciotti, Sylvie Cabrit, Deirdre Coffey, Catherine Dougados, Jochen Eislöffel, Patrick Hartigan, Alberto Noriega- Crespo, Linda Podio, Ewine F. van Dishoeck, Emma T. Whelan   +16 more
doaj   +1 more source

JWST Mid-infrared Spectroscopy Resolves Gas, Dust, and Ice in Young Stellar Objects in the Large Magellanic Cloud

The Astrophysical Journal
In this work, we present spectra of 11 young stellar objects (YSOs) taken with the Mid-Infrared Instrument / Medium Resolution Spectroscopy (MRS) instrument on board the James Webb Space Telescope (JWST).
Omnarayani Nayak, Alec S. Hirschauer, Patrick J. Kavanagh, Margaret Meixner, Laurie Chu, Nolan Habel, Olivia C. Jones, Laura Lenkić, Conor Nally, Megan Reiter, Massimo Robberto, B. A. Sargent   +11 more
doaj   +1 more source

Backlighting young stellar objects in the Central Molecular Zone

Astronomy & Astrophysics
Context. The Central Molecular Zone (CMZ) of the Milky Way contains a substantial reservoir of dense molecular gas, where numerous young stellar objects (YSOs) and dense cloud cores have been identified, offering valuable opportunities to investigate ...
Kang Yewon, An Deokkeun, Han Jiwon, Han Sang-Il, Pyo Dayoung, Adwin Boogert A. C., Kim Kee-Tae, Byun Do-Young   +7 more
doaj   +1 more source

Ultradeep Imaging of Nearby Dwarf Irregular Galaxies: Young Objects in the Far Outer Disk

The Astronomical Journal
Ultradeep UBVI imaging of 10 nearby (≤7.8 Mpc) noninteracting dwarf irregular galaxies are used to examine their far outer stellar disks. The annulus between 26 mag arcsec ^−2 and 29 mag arcsec ^−2 in the V band is what we define as the far outer disk ...
Deidre A. Hunter, Hong-Xin Zhang, Bruce G. Elmegreen, Ella R. Castelloe, Hannah Michaye Ledford, Ishara Nisley, Ryuga Hatano   +6 more
doaj   +1 more source

Young Stellar Objects in NGC 6823

, 2011
NGC 6823 is a young open cluster that lies at a distance of ~2 kpc in the Vulpecula OB1 association. Previous studies using CCD photometry and spectroscopy have identified a Trapezium system of bright O- and B-type stars at its center. We present optical, near-infrared and Spitzer photometric observations of the cluster. Our survey reaches down to I~22
Riaz, B., Martin, E. L., Tata, R., Monin, J. -L., Phan-Bao, N., Bouy, H.   +5 more
openaire   +2 more sources