Fredrik Schöier
Showing 38 publications
2016
Herschel/HIFI observations of the circumstellar ammonia lines in IRC+10216
M. Schmidt, J. H. He, R. Szczerba et al
Astronomy and Astrophysics. Vol. 592
Journal article
2013
HIFISTARS Herschel/HIFI observations of VY Canis Majoris. Molecular-line inventory of the envelope around the largest known star
J. Alcolea, V. Bujarrabal, P. Planesas et al
Astronomy and Astrophysics. Vol. 559, p. (article nr.) A93-
Journal article
2013
The abundance of HCN in circumstellar envelopes of AGB stars of different chemical type
Fredrik Schöier, S. Ramstedt, Hans Olofsson et al
Astronomy and Astrophysics. Vol. 550
Journal article
2012
Herschel/HIFI observations of red supergiants and yellow hypergiants I. Molecular inventory
D. Teyssier, G. Quintana-Lacaci, A. P. Marston et al
Astronomy and Astrophysics. Vol. 545, p. A99 (article no.)-
Journal article
2012
Herschel/HIFI observations of O-rich AGB stars: molecular inventory
Kay Justtanont, T. Khouri, Matthias Maercker et al
Astronomy and Astrophysics. Vol. 537, p. Article Number: A144 -
Journal article
2012
Herschel/HIFI observations of molecular emission in protoplanetary nebulae and young planetary nebulae
V. Bujarrabal, J. Alcolea, R. Soria-Ruiz et al
Astronomy and Astrophysics. Vol. 537, p. Article Number: A8-
Journal article
2011
The Mass-Loss Rates and Molecular Abundances of S-type AGB Stars
Sofia Ramstedt, Fredrik Schöier, Hans Olofsson
Proceedings from conference Why Galaxies Care about AGB stars II, in Vienna 16 - 20 August 2010; published in Astronomical Society of the Pacific conf series, vol 445. Vol. 445, p. 263-268
Conference contribution
2011
A chemical inventory of the S-type AGB star chi Cygni based on Herschel/HIFI observations of circumstellar line emission The importance of non-LTE chemical processes in a dynamical region
Fredrik Schöier, Matthias Maercker, Kay Justtanont et al
Astronomy and Astrophysics. Vol. 530
Journal article
2011
AGB Mass-Loss Characteristics: Rates, Temporal Variation, and Geometries
Fredrik Schöier, Sofia Ramstedt, Matthias Maercker et al
Proceedings from conference Why Galaxies Care about AGB stars II, in Vienna 16 - 20 August 2010; published in Astronomical Society of the Pacific conf series, vol 445. Vol. 445, p. 253-262
Conference contribution
2011
The Widespread Occurrence of Water Vapor in the Circumstellar Envelopes of Carbon-Rich Asymptotic Giant Branch Stars: First Results From a Survey With Herschel/HIFI
D. A. Neufeld, E. Gonzalez-Alfonso, G. J. Melnick et al
Astrophysical Journal Letters. Vol. 727 (2)
Journal article
2011
Herschel/HIFI Observations of IRC+10216: Water Vapor in the Inner Envelope of a Carbon-Rich Asymptotic Giant Branch Star
D. A. Neufeld, E. Gonzalez-Alfonso, G. J. Melnick et al
Astrophysical Journal Letters. Vol. 727 (2)
Journal article
2011
A HIFI View of Circumstellar H2O Emission from the S-type AGB Star X Cyg
Matthias Maercker, Fredrik Schöier, Kay Justtanont et al
Proceedings from conference Why Galaxies Care about AGB stars II, in Vienna 16 - 20 August 2010; published in Astronomical Society of the Pacific conf series, vol 445. Vol. 445, p. 613-617
Conference contribution
2011
Detached Shells of Dust and Gas around Carbon Stars
Matthias Maercker, Hans Olofsson, Kjell Eriksson et al
Proceedings from conference Why Galaxies Care about AGB stars II, in Vienna 16 - 20 August 2010; published in Astronomical Society of the Pacific conf series, vol 445. Vol. 445, p. 345-346
Conference poster
2011
Imaging the circumstellar dust around AGB stars with PolCor
S. Ramstedt, Matthias Maercker, G. Olofsson et al
Astronomy and Astrophysics. Vol. 531
Journal article
2011
Imaging the Circumstellar Dust Distribution around AGB Stars with the NOT/PolCor Instrument
Sofia Ramstedt, Matthias Maercker, G. Olofsson et al
Proceedings from conference Why Galaxies Care about AGB stars II, in Vienna 16 - 20 August 2010; published in Astronomical Society of the Pacific conf series, vol 445. Vol. 445, p. 367-368
Conference poster
2011
A Pilot Imaging Line Survey of RW LMi and IK Tau Using the Expanded Very Large Array
M. J. Claussen, Loránt Olivér Sjouwerman, M. P. Rupen et al
Astrophysical Journal Letters. Vol. 739 (1), p. L5-
Journal article
2010
A HIFI preview of warm molecular gas around chi Cygni: first detection of H2O emission toward an S-type AGB star
Kay Justtanont, L. Decin, Fredrik Schöier et al
Astronomy and Astrophysics. Vol. 521 (1), p. Article Number: L6-
Journal article
2010
Polarisation observations of VY Canis Majoris H2O 532-441 620.701 GHz maser emission with HIFI
M. Harwit, M. Houde, P. Sonnentrucker et al
Astronomy and Astrophysics. Vol. 521 (1), p. Article Number: L51-
Journal article
2010
Discovery of water vapour in the carbon star V Cygni from observations with Herschel/HIFI
D. A. Neufeld, E. Gonzalez-Alfonso, G. J. Melnick et al
Astronomy and Astrophysics. Vol. 521 (1), p. Article Number: L5-
Journal article
2010
Water content and wind acceleration in the envelope around the oxygen-rich AGB star IK Tauri as seen by Herschel/HIFI
L. Decin, Kay Justtanont, Elvire De Beck et al
Astronomy and Astrophysics. Vol. 521 (1), p. Article Number: L4-
Journal article
2010
Herschel/HIFI deepens the circumstellar NH3 enigma
K. M. Menten, F. Wyrowski, J. Alcolea et al
Astronomy and Astrophysics. Vol. 521 (1), p. Article Number: L7-
Journal article
2010
High-resolution HST/ACS images of detached shells around carbon stars
Hans Olofsson, Matthias Maercker, K. Eriksson et al
Astronomy and Astrophysics. Vol. 515 (JUN 2010), p. A270-
Journal article
2010
The detached dust and gas shells around the carbon star U Antliae
Matthias Maercker, Hans Olofsson, K. Eriksson et al
Astronomy and Astrophysics. Vol. 511 (1), p. A37-
Journal article
2010
Herschel/HIFI observations of high-J CO transitions in the protoplanetary nebula CRL 618
V. Bujarrabal, J. Alcolea, R. Soria-Ruiz et al
Astronomy and Astrophysics. Vol. 521 (1), p. Article Number: L3-
Journal article
2010
Mapping the 12CO J = 1-0 and J = 2-1 emission in AGB and early post-AGB circumstellar envelopes. I. The COSAS program, first sample
A. Castro-Carrizo, G. Quintana-Lacaci, R. Neri et al
Astronomy and Astrophysics. Vol. 523 (4), p. A59-
Journal article
2009
Circumstellar molecular line emission from S-type AGB stars: mass-loss rates and SiO abundances
S. Ramstedt, Fredrik Schöier, Hans Olofsson
Astronomy and Astrophysics. Vol. 499 (2), p. 515-527
Journal article
2009
Circumstellar water vapour in M-type AGB-stars: constraints from H2O(110-101) lines obtained with Odin
Matthias Maercker, Fredrik Schöier, Hans Olofsson et al
Astronomy and Astrophysics. Vol. 494, p. 243-252
Journal article
2009
The detached dust and gas shells around the carbon star U Ant
Matthias Maercker, Hans Olofsson, K. Eriksson et al
Preprint
2008
Probing chemical processes in AGB stars
Fredrik Schöier, Hans Olofsson
in Proceedings of "Organic matter in space", Hong Kong Feb. 18-22, 2008, IAU symposium 251, eds. S. Kwok, S. Sandfjord, Cambridge University Press, p. 201-205
Conference contribution
2008
Circumstellar H2O in M-type AGB stars
Matthias Maercker, Fredrik Schöier, Hans Olofsson
in Proceedings of "Organic Matter in Space", Hong Kong, Feb 18-22, 2008, IAU symposium 251, eds. S. Kwok, S. Sandford, Cambridge University Press, p. 163-164
Conference contribution
2008
Circumstellar water vapour in M-type AGB stars: radiative transfer models, abundances, and predictions for HIFI
Matthias Maercker, Fredrik Schöier, Hans Olofsson et al
Astronomy & Astrophysics. Vol. 479, p. 779-791
Journal article
2008
On the reliability of mass-loss-rate estimates for AGB stars
S. Ramstedt, Fredrik Schöier, Hans Olofsson et al
Astronomy & Astrophysics. Vol. 487, p. 645-657
Journal article
2008
MERLIN observations of OH/IR stars
Michael Lindqvist, Fredrik Schöier, Hans Olofsson et al
Proceedings of the 9th European VLBI Network Symposium on The role of VLBI in the Golden Age for Radio Astronomy and EVN Users Meeting., p. 81-83
Conference poster
2008
The 1 mm spectrum of VY Canis Majoris: Chemistry in an O-rich envelope
E.D. Tenenbaum, S.N. Milam, A.J. Apponi et al
in Proceedings of "Organic Matter in Space", Hong Kong Feb. 18-22, 2008, IAU symposium 251, eds. S. Kwok, S. Sandfjord, Cambridge University Press, p. 171-172
Conference contribution
2008
The physics and chemistry of circumstellar envelopes of S-stars on the AGB
S. Ramstedt, Fredrik Schöier, Hans Olofsson
in Proceedings of "Organic Matter in Space", Hong Kong feb. 18-22, 2008, IAU symposium 251, eds. S. Kwok, S. Sandfjord, Cambridge University Press, p. 167-168
Conference contribution
2007
The abundance of SiS in circumstellar envelopes around AGB stars
Fredrik Schöier, J. Bast, Hans Olofsson et al
Astronomy & Astrophysics. Vol. 473, p. 871-882
Journal article
2007
The Distribution of H13CN in the Circumstellar Envelope around IRC+10216
Fredrik Schöier, D. Fong, J.H. Bieging et al
The Astrophysical Journal. Vol. 670 (1), p. 766-773
Journal article
2005
An atomic and molecular database for analysis of submillimetre line observations
Fredrik Schöier, Floris F. S. van der Tak, E. F. van Dishoeck et al
Astronomy and Astrophysics. Vol. 432, p. 369-379
Journal article
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