Results 21 to 30 of about 6,154 (302)

X-shooter spectroscopy of young stellar objects [PDF]

, 2017
Context. Hydrogen recombination emission lines commonly observed in accreting young stellar objects represent a powerful tracer for the gas conditions in the circumstellar structures (accretion columns, and winds or jets). Aims. Here we perform a
ANTONIUCCI, Simone, NISINI, Brunella, A. Natta, S. Antoniucci, E. Rigliaco, ALCALA', JUAN MANUEL, B. Stelzer, B. Nisini, STELZER, BEATE, T. Giannini, J. M. Alcalá, GIANNINI, Teresa, RIGLIACO, ELISABETTA, NATTA, Antonella   +13 more
core   +1 more source

The Nature of Blue Stars with Mid-infrared Excesses in the Large Magellanic Cloud

The Astrophysical Journal Supplement Series, 2023
We present low-resolution optical spectra and classifications of 92 blue objects with mid-infrared excesses in the Large Magellanic Cloud. The majority of these objects were selected with the criteria of U − B < 0 and V < 17 from the potential young ...
Ryoko Ishioka, You-Hua Chu, Austin Edmister, Robert A. Gruendl, Lizhong Zhang, Ju Zhu   +5 more
doaj   +1 more source

Photometric variability of massive young stellar objects [PDF]

Astronomy & Astrophysics, 2018
The Vista Variables in the Via Lactea (VVV) survey has allowed for an unprecedented number of multi-epoch observations of the southern Galactic plane. In a recent paper, 13 massive young stellar objects (MYSOs) have already been identified within the highly variable (ΔKs > 1 mag) YSO sample of another published work.
Teixeira, G. D. C., Kumar, M. S. N., Smith, L., Lucas, P. W., Morris, C., Borissova, J., Monteiro, M. J. P. F. G., Caratti o Garatti, A., Contreras Peña, C., Froebrich, D., Gameiro, J. F.   +10 more
openaire   +3 more sources

Millimeter observations of Young Stellar Objects with the CARMA interferometer [PDF]

, 2022
Presento uno studio di 81 young stellar Objects di classe con l'obiettivo di ricavarne la massa in polvere dai flussi ...
Zennaro, Marco
core  

Salt-bearing Disk Candidates around High-mass Young Stellar Objects

The Astrophysical Journal, 2023
Molecular lines tracing the orbital motion of gas in a well-defined disk are valuable tools for inferring both the properties of the disk and the star it surrounds. Lines that arise only from a disk, and not also from the surrounding molecular cloud core
Adam Ginsburg, Brett A. McGuire, Patricio Sanhueza, Fernando Olguin, Luke T. Maud, Kei E. I. Tanaka, Yichen Zhang, Henrik Beuther, Nick Indriolo   +8 more
doaj   +1 more source

Stellar magnetism : empirical trends with age and rotation [PDF]

, 2014
AAV acknowledges support from a Royal Astronomical Society Fellowship and from the Swiss National Science Foundation via an Ambizione Fellowship. SGG acknowledges support from the Science and Technology Facilities Council (STFC) via an Ernest Rutherford ...
G. Hussain, Jeffers, S., Do Nascimento Jr., J.D., Waite, I.A., R. Fares, Folsom, C. P., Gregory, S. G.; id_orcid, P. Petit, Gregory, S. G., Hussain, G., do Nascimento, J. D., Donati, J. -F., Jardine, M., M. Jardine, Vidotto, A. A., Petit, P., I. A. Waite, Marsden, S., S. Marsden, Vidotto, A. A, Nascimento Júnior, José Dias do, Donati, J.F., J. Bouvier, J. Morin, J. D. Do Nascimento, Nascimento, J. D. Do, C. P. Folsom, Donati, J. F., Morin, J., Bouvier, J., J. F. Donati, Waite, I. A., Gregory, S.G., Jeffers, Sandra V., Fares, R., Hussain, G. A. J., Cameron, A. C., A. A. Vidotto, Morin, Julien, do Nascimento Jr., J.-D., A. C. Cameron, S. Jeffers, Cameron, A.C., S. G. Gregory, Vidotto, A.A., Folsom, C.P.   +45 more
core   +1 more source

Signatures of Companion-Disc Interaction in Young Stellar Objects

, 2023
The protoplanetary discs surrounding young stellar objects are the birthplace of exoplanetary systems. Understanding the evolution of these systems is key to unravelling the formation process of our own Solar system.
Brodie James Norfolk (19130239)
core   +1 more source

Young stellar objects in NGC 6823 [PDF]

Monthly Notices of the Royal Astronomical Society, 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
B. Riaz, E. L. Martín, R. Tata, J.-L. Monin, N. Phan-Bao, H. Bouy   +5 more
openaire   +3 more sources

300: An ACA 870 μm Continuum Survey of Orion Protostars and Their Evolution

The Astrophysical Journal, 2023
We present an 870 μ m continuum survey of 300 protostars from the Herschel Orion Protostar Survey using the Atacama Compact Array (ACA). These data measure protostellar flux densities on envelope scales ≤8000 au (20″) and resolve the structure of ...
Samuel Federman, S. Thomas Megeath, John J. Tobin, Patrick D. Sheehan, Riwaj Pokhrel, Nolan Habel, Amelia M. Stutz, William J. Fischer, Lee Hartmann, Thomas Stanke, Mayank Narang, Mayra Osorio, Prabhani Atnagulov, Rohan Rahatgaonkar   +13 more
doaj   +1 more source

Young Stellar Objects and Herbig-Haro Objects [PDF]

Australian Journal of Physics, 1992
Our current understanding of Herbig-Haro objects and their relationship with young stellar outflows is reviewed. The role of multi-waveband observations in the visible, infrared and radio in the study of outflows is discussed with examples drawn from the HH1, HH24 and HH54 outflow complexes.
openaire   +1 more source