Molecular diagnostics of the internal structure of starspots and sunspots

N Afram; SV Berdyugina; DM Fluri; SK Solanki; A Lagg; P Petit; J Arnaud

Molecular diagnostics of the internal structure of starspots and sunspots

N Afram, SV Berdyugina, DM Fluri, SK Solanki, A Lagg, P Petit, J Arnaud

Not published at Aalto University

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

We have analyzed the usefulness of molecules as a diagnostic tool for studying solar and stellar magnetism with the molecular Zeeman and Paschen-Back effects. In the first part we concentrate on molecules that are observed in sunspots such as MgH and TiO. We present calculated molecular line profiles obtained by assuming magnetic fields of 2–3 kG and compare these synthetic Stokes profiles with spectro-polarimetric observations in sunspots. The good agreement between the theory and observations allows us to turn our attention in the second part to starspots to gain insight into their internal structure. We investigate the temperature range in which the selected molecules can serve as indicators for magnetic fields on highly active cool stars and compare synthetic Stokes profiles with our recent observations.

Original language	English
Title of host publication	Solar Polarization 4
Editors	R Casini, BW Lites
Publisher	Astronomical Society of the Pacific
Pages	375-380
ISBN (Electronic)	978-1-58381-292-1
ISBN (Print)	978-1-583812-26-6
Publication status	Published - 2006
MoE publication type	A4 Conference publication
Event	Solar Polarization Workshop - Boulder, United States Duration: 19 Sept 2005 → 19 Sept 2005 Conference number: 4

Publication series

Name	ASP Conference Series
Publisher	Astronomical Society of the Pacific
Volume	358
ISSN (Print)	1050-3390

Workshop

Workshop	Solar Polarization Workshop
Country/Territory	United States
City	Boulder
Period	19/09/2005 → 19/09/2005

Access to Document

http://aspbooks.org/custom/publications/paper/358-0375.html

Cite this

Afram, N., Berdyugina, SV., Fluri, DM., Solanki, SK., Lagg, A., Petit, P., & Arnaud, J. (2006). Molecular diagnostics of the internal structure of starspots and sunspots. In R. Casini, & BW. Lites (Eds.), Solar Polarization 4 (pp. 375-380). (ASP Conference Series; Vol. 358). Astronomical Society of the Pacific. http://aspbooks.org/custom/publications/paper/358-0375.html

@inproceedings{78b112d0d98f4f74b418e44453441884,

title = "Molecular diagnostics of the internal structure of starspots and sunspots",

abstract = "We have analyzed the usefulness of molecules as a diagnostic tool for studying solar and stellar magnetism with the molecular Zeeman and Paschen-Back effects. In the first part we concentrate on molecules that are observed in sunspots such as MgH and TiO. We present calculated molecular line profiles obtained by assuming magnetic fields of 2–3 kG and compare these synthetic Stokes profiles with spectro-polarimetric observations in sunspots. The good agreement between the theory and observations allows us to turn our attention in the second part to starspots to gain insight into their internal structure. We investigate the temperature range in which the selected molecules can serve as indicators for magnetic fields on highly active cool stars and compare synthetic Stokes profiles with our recent observations.",

author = "N Afram and SV Berdyugina and DM Fluri and SK Solanki and A Lagg and P Petit and J Arnaud",

year = "2006",

language = "English",

isbn = "978-1-583812-26-6 ",

series = "ASP Conference Series",

publisher = "Astronomical Society of the Pacific",

pages = "375--380",

editor = "R Casini and BW Lites",

booktitle = "Solar Polarization 4",

address = "United States",

note = "Solar Polarization Workshop ; Conference date: 19-09-2005 Through 19-09-2005",

}

Afram, N, Berdyugina, SV, Fluri, DM, Solanki, SK, Lagg, A, Petit, P & Arnaud, J 2006, Molecular diagnostics of the internal structure of starspots and sunspots. in R Casini & BW Lites (eds), Solar Polarization 4. ASP Conference Series, vol. 358, Astronomical Society of the Pacific, pp. 375-380, Solar Polarization Workshop, Boulder, Colorado, United States, 19/09/2005. <http://aspbooks.org/custom/publications/paper/358-0375.html>

Molecular diagnostics of the internal structure of starspots and sunspots. / Afram, N; Berdyugina, SV; Fluri, DM et al.
Solar Polarization 4. ed. / R Casini; BW Lites. Astronomical Society of the Pacific, 2006. p. 375-380 (ASP Conference Series; Vol. 358).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Molecular diagnostics of the internal structure of starspots and sunspots

AU - Afram, N

AU - Berdyugina, SV

AU - Fluri, DM

AU - Solanki, SK

AU - Lagg, A

AU - Petit, P

AU - Arnaud, J

N1 - Conference code: 4

PY - 2006

Y1 - 2006

N2 - We have analyzed the usefulness of molecules as a diagnostic tool for studying solar and stellar magnetism with the molecular Zeeman and Paschen-Back effects. In the first part we concentrate on molecules that are observed in sunspots such as MgH and TiO. We present calculated molecular line profiles obtained by assuming magnetic fields of 2–3 kG and compare these synthetic Stokes profiles with spectro-polarimetric observations in sunspots. The good agreement between the theory and observations allows us to turn our attention in the second part to starspots to gain insight into their internal structure. We investigate the temperature range in which the selected molecules can serve as indicators for magnetic fields on highly active cool stars and compare synthetic Stokes profiles with our recent observations.

AB - We have analyzed the usefulness of molecules as a diagnostic tool for studying solar and stellar magnetism with the molecular Zeeman and Paschen-Back effects. In the first part we concentrate on molecules that are observed in sunspots such as MgH and TiO. We present calculated molecular line profiles obtained by assuming magnetic fields of 2–3 kG and compare these synthetic Stokes profiles with spectro-polarimetric observations in sunspots. The good agreement between the theory and observations allows us to turn our attention in the second part to starspots to gain insight into their internal structure. We investigate the temperature range in which the selected molecules can serve as indicators for magnetic fields on highly active cool stars and compare synthetic Stokes profiles with our recent observations.

UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=aalto_pure&SrcAuth=WosAPI&KeyUT=WOS:000246255400061&DestLinkType=FullRecord&DestApp=WOS

M3 - Conference article in proceedings

SN - 978-1-583812-26-6

T3 - ASP Conference Series

SP - 375

EP - 380

BT - Solar Polarization 4

A2 - Casini, R

A2 - Lites, BW

PB - Astronomical Society of the Pacific

T2 - Solar Polarization Workshop

Y2 - 19 September 2005 through 19 September 2005

ER -

Molecular diagnostics of the internal structure of starspots and sunspots

Abstract

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Workshop

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