Výsledky vyhledávání - "stars [Submillimeter]"

Linking high- and low-mass star formation:Observation-based continuum modelling and physical conditions

Autor: R. L. Pitts, L. E. Kristensen, J. K. Jørgensen, S. J. van der Walt

Publikováno v: Pitts, R L, Kristensen, L E, Jørgensen, J K & Van Der Walt, S J 2022, ' Linking high-and low-mass star formation : Observation-based continuum modelling and physical conditions ', Astronomy and Astrophysics, vol. 657, A70 . https://doi.org/10.1051/0004-6361/202142324

Astronomers have yet to establish whether high-mass protostars form from high-mass prestellar cores, similar to their lower-mass counterparts, or from lower-mass fragments at the heart of a pre-protostellar cluster undergoing large-scale collapse. Pa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21c17dca5a4d234263cca89e6be6eb47
https://curis.ku.dk/ws/files/301447688/aa42324_21.pdf

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Radio emission in a nearby ultracool dwarf binary: a multi-frequency study

Autor: J. B. Climent, J. C. Guirado, M. R. Zapatero Osorio, O. V. Zakhozhay, M. Pérez-Torres, R. Azulay, B. Gauza, R. Rebolo, V. J. S. Béjar, J. Martín-Pintado, C. Lefèvre

Publikováno v: Digital.CSIC. Repositorio Institucional del CSIC
instname

Context. The substellar triple system VHS J125601.92−125723.9 (hereafter VHS 1256−1257) is composed of an equal-mass M7.5 brown dwarf binary and an L7 low-mass substellar object. In Guirado et al. (2018, A&A, 610, A23) we published the detection

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d9c6f2c228abada83c64316e157cc04

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ALMA observations of doubly deuterated water:Inheritance of water from the prestellar environment

Autor: Jes K. Jørgensen, Kenji Furuya, E. F. van Dishoeck, Audrey Coutens, S. S. Jensen, Daniel Harsono, Lars E. Kristensen, Magnus Persson

Publikováno v: Jensen, S S, Jørgensen, J K, Kristensen, L E, Coutens, A, van Dishoeck, E F, Furuya, K, Harsono, D & Persson, M V 2021, ' ALMA observations of doubly deuterated water : Inheritance of water from the prestellar environment ', Astronomy and Astrophysics, vol. 650, A172 . https://doi.org/10.1051/0004-6361/202140560
Astronomy and Astrophysics, 650, 1-11

Establishing the origin of the water D/H ratio in the Solar System is central to our understanding of the chemical trail of water during the star and planet formation process. Recent modeling suggests that comparisons of the D$_2$O/HDO and HDO/H$_2$O

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e159d0f774643b1b5e23fed96bcbd4e
https://curis.ku.dk/portal/da/publications/alma-observations-of-doubly-deuterated-water(2fc99b71-563f-4d67-83a2-7a885346b9d4).html

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ATOMIUM: A high-resolution view on the highly asymmetric wind of the AGB star pi(1)Gruis: I. First detection of a new companion and its effect on the inner wind

Publikováno v: Homan, W, Montarges, M, Pimpanuwat, B, Richards, A M S, Wallstrom, S H J, Kervella, P, Decin, L, Zijlstra, A, Danilovich, T, Koter, A D, Menten, K, Sahai, R, Plane, J, Lee, K, Waters, R, Baudry, A, Wong, K T, Millar, T J, Sande, M V D, Lagadec, E, Gobrecht, D, Yates, J, Price, D, Cannon, E, Bolte, J, Ceuster, F D, Herpin, F, Nuth, J, Sindel, J P, Kee, D, Grey, M D, Etoka, S, Jeste, M, Gottlieb, C A, Gottlieb, E, McDonald, I, Mellah, I E & Muller, H S P 2020, ' Atomium : A high-resolution view on the highly asymmetric wind of the AGB star Pi1 Gruis. I. First detection of a new companion and its effect on the inner wind ', A&A, vol. 644, A61 . https://doi.org/10.1051/0004-6361/202039185
Astronomy & Astrophysics
Astronomy & Astrophysics, 644:A61. EDP Sciences

The nebular circumstellar environments of cool evolved stars are known to harbour a rich morphological complexity of gaseous structures on different length scales. A large part of these density structures are thought to be brought about by the intera

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa4021904217b6313b9cbc6392611276
https://lirias.kuleuven.be/handle/123456789/667469

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Bipolar molecular outflow of the very low-mass star Par-Lup3-4: Evidence for scaled-down low-mass star formation

Autor: F. Comerón, Matthias R. Schreiber, A. Santamaria-Miranda, A. Ribas, Koraljka Mužić, Nuria Huélamo, I. de Gregorio-Monsalvo, Leonardo Testi, C. Lopez, Adele Plunkett

Publikováno v: Digital.CSIC. Repositorio Institucional del CSIC
instname
DIGITAL.INTA Repositorio Digital del Instituto Nacional de Técnica Aeroespacial
Instituto Nacional de Técnica Aeroespacial (INTA)

Context. Very low-mass stars are known to have jets and outflows, which is indicative of a scaled-down version of low-mass star formation. However, only very few outflows in very low-mass sources are well characterized. Aims. We characterize the bipo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8da68bf988caa706523db8e632e8005c
http://hdl.handle.net/10261/233737

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ALMA detection of a tentative nearly edge-on rotating disk around the nearby AGB star R Doradus

Autor: Joseph A. Nuth, Marie Van de Sande, Leen Decin, Taissa Danilovich, Alex de Koter, Ward Homan

Publikováno v: Astronomy & Astrophysics
Astronomy & Astrophysics, 614:A113. EDP Sciences

A spectral scan of the circumstellar environment of the asymptotic giant branch (AGB) star R~Doradus was taken with ALMA in cycle 2 at frequencies between 335 and 362 GHz and with a spatial resolution of $\sim$150 milliarcseconds. Many molecular line

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d559988399ef4a75d4f812f0a977b5ed
https://lirias.kuleuven.be/handle/123456789/626371

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Distribution of Serpens South protostars revealed with ALMA

Autor: Hector G. Arce, Michael Dunham, Diego Mardones, Manuel Fernández-López, Gemma Busquet, Adele Plunkett

Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

Aims: We investigated the masses and spatial distributions of pre-stellar and protostellar candidates in the young, low-mass star forming region Serpens South, where active star formation is known to occur along a predominant filamentary structure. P

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5feff8ee05655e0b7c933a53497ae5a

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An ALMA 3mm continuum census of Westerlund 1

Autor: Danielle Fenech, Ignacio Negueruela, R. K. Prinja, J. S. Clark, Sean M. Dougherty, Francisco Najarro, B. W. Ritchie, A. Richards, H. Andrews

Publikováno v: RUA. Repositorio Institucional de la Universidad de Alicante
Universidad de Alicante (UA)
Fenech, D M, Clark, J S, Prinja, R K, Dougherty, S, Najarro, F, Negueruela, I, Richards, A, Ritchie, B W & Andrews, H 2018, ' An ALMA 3 mm continuum census of Westerlund 1 ', Astronomy and Astrophysics, vol. 617, A137 . https://doi.org/10.1051/0004-6361/201832754

Massive stars play an important role in both cluster and galactic evolution and the rate at which they lose mass is a key driver of both their own evolution and their interaction with the environment up to and including their SNe explosions. Young ma

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::723f69847be17548c1b6f4dce6a21f4e

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Chasing discs around O-type (proto)stars: ALMA evidence for an SiO disc and disc wind from G17.64+0.16⋆

Publikováno v: Astronomy & Astrophysics, 620, pp. 1-20
Astronomy and Astrophysics, 620, A31
Astronomy and Astrophysics
Astronomy & Astrophysics, 620:A31. EDP Sciences
Astronomy & Astrophysics, 620, 1-20
Maud, L T, Cesaroni, R, Kumar, M S N, Van Der Tak, F F S, Allen, V, Hoare, M G, Klaassen, P D, Harsono, D, Hogerheijde, M R, Sánchez-Monge, A, Schilke, P, Ahmadi, A, Beltrán, M T, Beuther, H, Csengeri, T, Etoka, S, Fuller, G, Galván-Madrid, R, Goddi, C, Henning, T, Johnston, K G, Kuiper, R, Lumsden, S, Moscadelli, L, Mottram, J C, Peters, T, Rivilla, V M, Testi, L, Vig, S, De Wit, W J & Zinnecker, H 2018, ' Chasing discs around O-type (proto)stars : ALMA evidence for an SiO disc and disc wind from G17.64+0.16 ', Astronomy and Astrophysics, vol. 620, A31 . https://doi.org/10.1051/0004-6361/201833908

We present high angular resolution 0.2 arcsec continuum and molecular emission line Atacama Large Millimeter/sub-millimeter Array (ALMA) observations of G17.64+0.16 in Band 6 (220GHz) taken as part of a campaign in search of circumstellar discs aroun

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f26200b1b5f4113da2673356c54097cb
https://hdl.handle.net/2066/198442

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Vibrationally excited water emission at 658 GHz from evolved stars

Autor: Malcolm Gray, C. De Breuck, K. Torstensson, Elizabeth Humphreys, Alain Baudry, Michael Olberg, A. M. S. Richards, Wouter Vlemmings, Fabrice Herpin

Publikováno v: Baudry, A, Humphreys, E M L, Herpin, F, Torstensson, K, Vlemmings, W H T, Richards, A M S, Gray, M D, De Breuck, C & Olberg, M 2018, ' Vibrationally excited water emission at 658 GHz from evolved stars ', Astronomy and Astrophysics, vol. 609, A25 . https://doi.org/10.1051/0004-6361/201731694
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2018, 609, pp.A25. ⟨10.1051/0004-6361/201731694⟩

Several rotational transitions of water have been identified toward evolved stars in the ground vibrational state as well as in the first excited state of the bending mode. In the latter vibrational state of water, the 658 GHz J = 1_1,0-1_0,1 rotatio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b42df7f96be817bdd891372e7b4ddbd
http://arxiv.org/abs/1711.02350

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