Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Per Bjerkeli"'
Autor:
Klaus Pontoppidan, Jes K. Jørgensen, Per Bjerkeli, Helen J. Fraser, W. R. M. Rocha, A. N. Suutarinen, G. Perotti, Lars E. Kristensen
Publikováno v:
Perotti, G, Jørgensen, J K, Fraser, H J, Suutarinen, A N, Kristensen, L E, Rocha, W R M, Bjerkeli, P & Pontoppidan, K M 2021, ' Linking ice and gas in the λ Orionis Barnard 35A cloud ', Astronomy and Astrophysics, vol. 650, A168 . https://doi.org/10.1051/0004-6361/202039669
Dust grains play an important role in the synthesis of molecules in the interstellar medium, from the simplest species to complex organic molecules. How some of these solid-state molecules are converted into gas-phase species is still a matter of deb
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec801dc5f558048f1f6a4625e412ad65
https://curis.ku.dk/portal/da/publications/linking-ice-and-gas-in-the--orionis-barnard-35a-cloud(2a83c396-08d4-41ce-8476-72b8a2790968).html
https://curis.ku.dk/portal/da/publications/linking-ice-and-gas-in-the--orionis-barnard-35a-cloud(2a83c396-08d4-41ce-8476-72b8a2790968).html
Autor:
Hannah Calcutt, Daniel Harsono, Lars E. Kristensen, Jes K. Jørgensen, M. H. D. van der Wiel, Per Bjerkeli, Jon P. Ramsey
Publikováno v:
Astronomy & Astrophysics
Harsono, D, van der Wiel, M H D, Bjerkeli, P, Ramsey, J P, Calcutt, H, Kristensen, L E & Jorgensen, J K 2021, ' Resolved molecular line observations reveal an inherited molecular layer in the young disk around TMC1A ', Astronomy & Astrophysics, vol. 646, A72 . https://doi.org/10.1051/0004-6361/202038697
Astronomy & Astrophysics, 646, 1-17
Harsono, D, van der Wiel, M H D, Bjerkeli, P, Ramsey, J P, Calcutt, H, Kristensen, L E & Jorgensen, J K 2021, ' Resolved molecular line observations reveal an inherited molecular layer in the young disk around TMC1A ', Astronomy & Astrophysics, vol. 646, A72 . https://doi.org/10.1051/0004-6361/202038697
Astronomy & Astrophysics, 646, 1-17
Physical processes that govern the star and planet formation sequence influence the chemical composition and evolution of protoplanetary disks. To understand the chemical composition of protoplanets, we need to constrain the composition and structure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::155158ff9a6ac516fec78021941e8e41
https://hdl.handle.net/1887/3275643
https://hdl.handle.net/1887/3275643
Publikováno v:
Astronomy & Astrophysics. 657:A106
(abridged) Magnetic fields are fundamental to the accretion dynamics of protoplanetary disks and they likely affect planet formation. Typical methods to study the magnetic field morphology observe the polarization of dust or spectral lines. However,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c1645a2b67ae5a5393674afde71cf49
https://doi.org/10.1051/0004-6361/202141285
https://doi.org/10.1051/0004-6361/202141285
Autor:
Per Bjerkeli, Jon P. Ramsey, Jes K. Jørgensen, Daniel Harsono, Lars E. Kristensen, Matthijs H. D. van der Wiel
Publikováno v:
Proceedings of the International Astronomical Union. 14:106-110
Disks around young stars are the sites of planet formation. As such, the physical and chemical structure of disks have a direct impact on the formation of planetary bodies. Outflowing winds remove angular momentum and mass and affect the disk structu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8dca8399545161516a4930214523406
https://doi.org/10.1017/s1743921319003119
https://doi.org/10.1017/s1743921319003119
Autor:
Per Bjerkeli, Hannah Calcutt, Maria Drozdovskaya, Robin T. Garrod, Niels F. W. Ligterink, Jes K. Jørgensen, Holger S. P. Müller, Eric R. Willis, Susanne F. Wampfler, Audrey Coutens
Publikováno v:
Calcutt, H, Willis, E R, Jorgensen, J K, Bjerkeli, P, Ligterink, N F W, Coutens, A, Mueller, H S P, Garrod, R T, Wampfler, S F & Drozdovskaya, M N 2019, ' The ALMA-PILS survey : propyne (CH3CCH) in IRAS 16293-2422 ', Astronomy & Astrophysics, vol. 631, A137 . https://doi.org/10.1051/0004-6361/201936323
Astronomy & Astrophysics
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2019, 631 (A137), ⟨10.1051/0004-6361/201936323⟩
Astronomy & Astrophysics
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2019, 631 (A137), ⟨10.1051/0004-6361/201936323⟩
Context. Propyne (CH$_3$CCH) has been detected in a variety of environments, from Galactic star-forming regions to extragalactic sources. Such molecules are excellent tracers of the physical conditions in star-forming regions. Aims. This study explor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f1a02bc3400b57a3b0baf3e647de252
https://curis.ku.dk/ws/files/248766066/aa36323_19.pdf
https://curis.ku.dk/ws/files/248766066/aa36323_19.pdf
Autor:
Daniel Harsono, Lars E. Kristensen, Jes K. Jørgensen, Sebastien Muller, Magnus Persson, Matthijs H. D. van der Wiel, Hannah Calcutt, Jon P. Ramsey, Per Bjerkeli
Publikováno v:
Astronomy and Astrophysics (0004-6361), 631, A64
Astronomy & Astrophysics
Bjerkeli, P, Ramsey, J P, Harsono, D, Calcutt, H, Kristensen, L E, van der Wiel, M H D, Jorgensen, J K, Muller, S & Persson, M V 2019, ' Kinematics around the B335 protostar down to au scales ', Astronomy & Astrophysics, vol. 631, A64 . https://doi.org/10.1051/0004-6361/201935948
Astronomy & Astrophysics
Bjerkeli, P, Ramsey, J P, Harsono, D, Calcutt, H, Kristensen, L E, van der Wiel, M H D, Jorgensen, J K, Muller, S & Persson, M V 2019, ' Kinematics around the B335 protostar down to au scales ', Astronomy & Astrophysics, vol. 631, A64 . https://doi.org/10.1051/0004-6361/201935948
Context. The relationship between outflow launching and formation of accretion disks around young stellar objects is still not entirely understood, which is why spectrally and spatially resolved observations are needed. Recently, the Atacama Large Mi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2f1589eb67f4021039bd3c28b9da0d7
Publikováno v:
Astronomy & Astrophysics. 637:A90
Context. Characterising and understanding the atmospheres of Jovian icy moons is one of the key exploration goals of the Submillimetre Wave Instrument (SWI), which is to be flown on ESA’s Jupiter Icy Moons Explorer (JUICE) mission. Aims. The aim of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6285b0b5dd87ab4667bbc9bf3407687b
https://doi.org/10.1051/0004-6361/202037609
https://doi.org/10.1051/0004-6361/202037609
Autor:
Hannah Calcutt, Kathrin Altwegg, Matthijs H. D. van der Wiel, Holger S. P. Müller, Per Bjerkeli, Susanne F. Wampfler, Maria Drozdovskaya, Magnus Persson, Audrey Coutens, Ursina Calmonte, Ewine F. van Dishoeck, Jes K. Jørgensen
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2018, 476 (4), pp.4949-4964. ⟨10.1093/mnras/sty462⟩
Drozdovskaya, Maria N; van Dishoeck, Ewine F; Jørgensen, Jes K; Calmonte, Ursina Maria; van der Wiel, Matthijs H D; Coutens, Audrey; Calcutt, Hannah; Müller, Holger S P; Bjerkeli, Per; Persson, Magnus V; Wampfler, Susanne F; Altwegg, Kathrin (2018). The ALMA-PILS survey: the sulphur connection between protostars and comets: IRAS 16293–2422 B and 67P/Churyumov–Gerasimenko. Monthly notices of the Royal Astronomical Society, 476(4), pp. 4949-4964. Oxford University Press 10.1093/mnras/sty462
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2018, 476 (4), pp.4949-4964. ⟨10.1093/mnras/sty462⟩
Drozdovskaya, Maria N; van Dishoeck, Ewine F; Jørgensen, Jes K; Calmonte, Ursina Maria; van der Wiel, Matthijs H D; Coutens, Audrey; Calcutt, Hannah; Müller, Holger S P; Bjerkeli, Per; Persson, Magnus V; Wampfler, Susanne F; Altwegg, Kathrin (2018). The ALMA-PILS survey: the sulphur connection between protostars and comets: IRAS 16293–2422 B and 67P/Churyumov–Gerasimenko. Monthly notices of the Royal Astronomical Society, 476(4), pp. 4949-4964. Oxford University Press 10.1093/mnras/sty462
The evolutionary past of our Solar System can be pieced together by comparing analogous low-mass protostars with remnants of our Protosolar Nebula - comets. Sulphur-bearing molecules may be unique tracers of the joint evolution of the volatile and re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37789e153c4df7852f87325aac5a191a
Publikováno v:
The Astrophysical Journal
We present APEX 218 GHz observations of molecular emission in a complete sample of embedded protostars in the Ophiuchus star-forming region. To study the physical properties of the cores, we calculate H$_2$CO and c-C$_3$H$_2$ rotational temperatures,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fc8b519952f5f623beaf4a2cbb7e6405
Autor:
S. F. Wampfler, Antoine Gusdorf, Neal J. Evans, Edwin Bergin, Per Bjerkeli, Doug Johnstone, Daniel Harsono, Joseph C. Mottram, Lars E. Kristensen, Sylvie Cabrit, Sébastien Maret, Jeong-Eun Lee, Jes K. Jørgensen, T. A. van Kempen, Steven D. Doty, Gregory J. Herczeg, Umut A. Yildiz, E. F. van Dishoeck, M. Tafalla, Ruud Visser, Agata Karska
Publikováno v:
NASA Astrophysics Data System
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2017, 605, pp.A93. ⟨10.1051/0004-6361/201630127⟩
Astronomy & Astrophysics (0004-6361)
Astronomy & Astrophysics (0004-6361), 605, A93
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2017, 605, pp.A93. ⟨10.1051/0004-6361/201630127⟩
Astronomy & Astrophysics (0004-6361)
Astronomy & Astrophysics (0004-6361), 605, A93
(Abridged) Through spectrally unresolved observations of high-J CO transitions, Herschel-PACS has revealed large reservoirs of warm (300 K) and hot (700 K) molecular gas around low-mass protostars. We aim to shed light on the excitation and origin of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a07523cfc3006367023b2db1c20570e