Results 11 to 20 of about 1,150 (163)

Accretion-induced variability links young stellar objects, white dwarfs, and black holes. [PDF]

Sci Adv, 2015
Scaringi S, Maccarone TJ, Körding E, Knigge C, Vaughan S, Marsh TR, Aranzana E, Dhillon VS, Barros SC.   +8 more
europepmc   +2 more sources

Cyanopolyyne Chemistry around Massive Young Stellar Objects [PDF]

The Astrophysical Journal, 2019
Abstract Recent radio astronomical observations have revealed that HC5N, the second shortest cyanopolyyne (HC2n+1N), is abundant around some massive young stellar objects (MYSOs), which is not predicted by classical carbon-chain chemistry.
Kotomi Taniguchi, Eric Herbst, Paola Caselli, Alec Paulive, Dominique M. Maffucci, Masao Saito   +5 more
openaire   +3 more sources

Infrared Interferometric Observations of Young Stellar Objects [PDF]

The Astrophysical Journal, 2000
We present infrared observations of four young stellar objects using the Palomar Testbed Interferometer (PTI). For three of the sources, T Tau, MWC 147 and SU Aur, the 2.2 micron emission is resolved at PTI's nominal fringe spacing of 4 milliarcsec (mas), while the emission region of AB Aur is over-resolved on this scale.
Akeson, R. L., Ciardi, D. R., van Belle, G. T., Creech-Eakman, M. J., Lada, E. A.   +4 more
openaire   +2 more sources

The GRAVITY young stellar object survey

Astronomy & Astrophysics, 2019
Contexto. Los estudios de la distribución del polvo, la composición y la evolución de los discos protoplanetarios proporcionan pistas para comprender la formación de planetas. Sin embargo, se sabe poco sobre las regiones más internas de los discos donde se espera que se formen los planetas telúricos. Objetivos.
Y.-I. Bouarour, K. Perraut, F. Ménard, W. Brandner, A. Caratti o Garatti, P. Caselli, E. van Dishoeck, C. Dougados, R. Garcia Lopez, R. Grellmann, Thomas Henning, L. Klarmann, Lucas Labadie, A. Natta, J. Sánchez-Bermúdez, W. F. Thi, P. T. de Zeeuw, A. Amorim, M. Bauböck, M. Benisty, J.‐P. Berger, Y. Clénet, V. Coudé du Foresto, G. Duvert, A. Eckart, F. Eisenhauer, F. Eupen, M. Filho, F. Gao, Paulo J. V. Garcia, É. Gendron, R. Genzel, S. Gillessen, A. Jiménez-Rosales, L. Jocou, S. Hippler, M. Horrobin, Z. Hubert, P. Kervella, S. Lacour, J.-B. Le Bouquin, Pierre Léna, T. Ott, T. Paumard, G. Perrin, O. Pfuhl, G. Rousset, S. Scheithauer, J. Shangguan, Julia Stadler, O. Straub, C. Straubmeier, E. Sturm, F. Vincent, S. D. von Fellenberg, F. Widmann, Michael Wiest   +56 more
openaire   +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

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

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

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

An APEX Study of Molecular Outflows in FUor-type Stars

The Astrophysical Journal, 2023
The FU Orionis–type objects (FUors) are low-mass pre-main-sequence objects that go through a short-lived phase (∼100 yr) of increased mass accretion rate (from 10 ^−8 to 10 ^−4 M _⊙ yr ^−1 ).
Fernando Cruz-Sáenz de Miera, Ágnes Kóspál, Péter Ábrahám, Timea Csengeri, Orsolya Fehér, Rolf Güsten, Thomas Henning   +6 more
doaj   +1 more source

The GRAVITY young stellar object survey

Astronomy & Astrophysics, 2021
Context. 51 Oph is a Herbig Ae/Be star that exhibits strong near-infrared CO ro-vibrational emission at 2.3 μ m, most likely originating in the innermost regions of a circumstellar disc. Aims. We aim to obtain the physical and geometrical properties of the system by spatially resolving the circumstellar environment of the inner gaseous disc.
Koutoulaki, M., Garcia Lopez, R., Natta, A., Fedriani, R., Caratti O Garatti, A., Ray, T., Coffey, D., Brandner, W., Dougados, C., Garcia, P., Klarmann, L., Labadie, L., Perraut, K., Sanchez-Bermudez, J., Lin, C.-C., Amorim, A., Bauböck, M., Benisty, M., Berger, J., Buron, A., Caselli, P., Clénet, Y., Coudé Du Foresto, V., de Zeeuw, P., Duvert, G., de Wit, W., Eckart, A., Eisenhauer, F., Filho, M., Gao, F., Gendron, E., Genzel, R., Gillessen, S., Grellmann, R., Habibi, M., Haubois, X., Haussmann, F., Henning, T., Hippler, S., Hubert, Z., Horrobin, M., Jimenez Rosales, A., Jocou, L., Kervella, P., Kolb, J., Lacour, S., Le Bouquin, J.-B., Léna, P., Linz, H., Ott, T., Paumard, T., Perrin, G., Pfuhl, O., Ramírez-Tannus, M., Rau, C., Rousset, G., Scheithauer, S., Shangguan, J., Stadler, J., Straub, O., Straubmeier, C., Sturm, E., van Dishoeck, E., Vincent, F., von Fellenberg, S., Widmann, F., Wieprecht, E., Wiest, M., Wiezorrek, E., Yazici, S., Zins, G.   +70 more
openaire   +3 more sources