Eric Stempels

ANDES, the high resolution spectrograph for the ELT: evolution of the Fiber-Link subsystem after the System Architecture Review

Brucalassi, A.; Tozzi, A.; Oliva, E.; Araiza-Duran, J. A. et al.

Part of Ground-Based and Airborne Instrumentation for Astronomy X, 2024

• DOI for ANDES, the high resolution spectrograph for the ELT: evolution of the Fiber-Link subsystem after the System Architecture Review

ANDES, the high resolution spectrograph for the ELT: science goals, project overview and future developments

Marconi, A.; Abreu, M.; Adibekyan, V; Alberti, V et al.

Part of Ground-Based and Airborne Instrumentation for Astronomy X, 2024

• DOI for ANDES, the high resolution spectrograph for the ELT: science goals, project overview and future developments

ANDES, the high-resolution spectrograph for the ELT: project management for the preliminary design phase

Di Marcantonio, Paolo; Stempels, Eric H. C.; Giro, Enrico; Alberti, Valentina et al.

Part of Modeling, Systems Engineering, and Project Management for Astronomy XI, 2024

• DOI for ANDES, the high-resolution spectrograph for the ELT: project management for the preliminary design phase

Determination of small-scale magnetic fields on Sun-like stars in the near-infrared using CRIRES+

Hahlin, Axel; Kochukhov, Oleg; Rains, Adam; Lavail, Alexis et al.

Part of Astronomy and Astrophysics, 2023

• DOI for Determination of small-scale magnetic fields on Sun-like stars in the near-infrared using CRIRES+
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CRIRES+ detection of CO emissions lines and temperature inversions on the dayside of WASP-18b and WASP-76b

Yan, F.; Nortmann, L.; Reiners, A.; Piskunov, Nikolai et al.

Part of Astronomy and Astrophysics, 2023

• DOI for CRIRES+ detection of CO emissions lines and temperature inversions on the dayside of WASP-18b and WASP-76b
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Determination of small-scale magnetic fields on Sun-like stars in the near-infrared using CRIRES+

Hahlin, Axel; Kochukhov, Oleg; Rains, Adam; Lavail, Alexis et al.

Part of Astronomy and Astrophysics, 2023

• DOI for Determination of small-scale magnetic fields on Sun-like stars in the near-infrared using CRIRES+
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CRIRES+ detection of CO emissions lines and temperature inversions on the dayside of WASP-18b and WASP-76b

Yan, F.; Nortmann, L.; Reiners, A.; Piskunov, Nikolai et al.

Part of Astronomy and Astrophysics, 2023

• DOI for CRIRES+ detection of CO emissions lines and temperature inversions on the dayside of WASP-18b and WASP-76b
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CRIRES+ on sky at the ESO Very Large Telescope: Observing the Universe at infrared wavelengths and high spectral resolution

Dorn, R. J.; Bristow, P.; Smoker, J. V.; Rodler, F. et al.

Part of Astronomy and Astrophysics, 2023

• DOI for CRIRES+ on sky at the ESO Very Large Telescope: Observing the Universe at infrared wavelengths and high spectral resolution
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A Decade with VAMDC: Results and Ambitions

Albert, Damien; Antony, Bobby K.; Ba, Yaye Awa; Babikov, Yuri L. et al.

Part of Atoms, 2020

• DOI for A Decade with VAMDC: Results and Ambitions
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Ejby-A new H5/6 ordinary chondrite fall in Copenhagen, Denmark

Haack, H.; Sorensen, A. N.; Bischoff, A.; Patzek, M. et al.

Part of Meteoritics and Planetary Science, p. 1853-1869, 2019

• DOI for Ejby-A new H5/6 ordinary chondrite fall in Copenhagen, Denmark

Fundamental properties of the pre-main sequence eclipsing stars of MML 53 and the mass of the tertiary

Maqueo Chew, Y. Gomez; Hebb, L.; Stempels, Henricus Cornelis; Paat, A. et al.

Part of Astronomy and Astrophysics, 2019

• DOI for Fundamental properties of the pre-main sequence eclipsing stars of MML 53 and the mass of the tertiary

S Coronae Australis: a T Tauri twin

Gahm, G. F.; Petrov, P. P.; Tambovsteva, L. V.; Grinin, V. P. et al.

Part of Astronomy and Astrophysics, 2018

• DOI for S Coronae Australis: a T Tauri twin

The virtual atomic and molecular data centre (VAMDC) consortium

Dubernet, M. L.; Antony, B. K.; Ba, Y. A.; Babikov, Yu L. et al.

Part of Journal of Physics B, 2016

• DOI for The virtual atomic and molecular data centre (VAMDC) consortium
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Magnetic field topology and chemical spot distributions in the extreme Ap star HD 75049

Kochukhov, Oleg; Rusomarov, Naum; Valenti, J. A.; Stempels, H. C. et al.

Part of Astronomy and Astrophysics, 2015

• DOI for Magnetic field topology and chemical spot distributions in the extreme Ap star HD 75049

A major upgrade of the VALD database

Ryabchikova, T.; Piskunov, Nikolai; Kurucz, R. L.; Stempels, Eric H. C. et al.

Part of Physica Scripta, 2015

• DOI for A major upgrade of the VALD database

Doppler probe of accretion onto a T Tauri star

Petrov, P. P.; Gahm, G. F.; Herczeg, G. J.; Stempels, H. C. et al.

Part of Astronomy and Astrophysics, 2014

• DOI for Doppler probe of accretion onto a T Tauri star

FIES: The high-resolution Fiber-fed Echelle Spectrograph at the Nordic Optical Telescope

Telting, J. H.; Avila, G.; Buchhave, L.; Frandsen, S. et al.

Part of Astronomical Notes - Astronomische Nachrichten, p. 41-45, 2014

• DOI for FIES: The high-resolution Fiber-fed Echelle Spectrograph at the Nordic Optical Telescope

Magnetically Controlled Accretion on the Classical T Tauri Stars GQ Lupi and TW Hydrae

Johns-Krull, Christopher M.; Chen, Wei; Valenti, Jeff A.; Jeffers, Sandra V. et al.

Part of Astrophysical Journal, p. 11, 2013

• DOI for Magnetically Controlled Accretion on the Classical T Tauri Stars GQ Lupi and TW Hydrae

Are there tangled magnetic fields on HgMn stars?

Kochukhov, Oleg; Makaganiuk, Vitalii; Piskunov, Nikolai; Jeffers, S. V. et al.

Part of Astronomy and Astrophysics, 2013

• DOI for Are there tangled magnetic fields on HgMn stars?
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Face to phase with RU Lupi

Gahm, G. F.; Stempels, H. C.; Walter, F. M.; Petrov, P. P. et al.

Part of Astronomy and Astrophysics, 2013

• DOI for Face to phase with RU Lupi

Three-dimensional magnetic and abundance mapping of the cool Ap star HD 24712: I. Spectropolarimetric observations in all four Stokes parameters

Rusomarov, Naum; Kochukhov, Oleg; Piskunov, Nikolai; Jeffers, S. V. et al.

Part of Astronomy and Astrophysics, 2013

• DOI for Three-dimensional magnetic and abundance mapping of the cool Ap star HD 24712: I. Spectropolarimetric observations in all four Stokes parameters
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Magnetism, chemical spots, and stratification in the HgMn star ϕ Phoenicis

Makaganiuk, Vitalii; Kochukhov, Oleg; Piskunov, Nikolai; Jeffers, Sandra et al.

Part of Astronomy and Astrophysics, 2012

• DOI for Magnetism, chemical spots, and stratification in the HgMn star ϕ Phoenicis

A disk-based dynamical mass estimate for the young binary V4046 Sgr

Rosenfeld, K. A.; Andrews, S. M.; Wilner, D. J.; Stempels, H. C.

Part of Astrophysical Journal, p. 119, 2012

• DOI for A disk-based dynamical mass estimate for the young binary V4046 Sgr

International observational campaigns of the last two eclipses in EE Cephei: 2003 and 2008/9

Galan, C.; Mikolajewski, M.; Tomov, T.; Graczyk, D. et al.

Part of Astronomy and Astrophysics, 2012

• DOI for International observational campaigns of the last two eclipses in EE Cephei: 2003 and 2008/9

Luminosity Discrepancy in the Equal-Mass, Pre-Main-Sequence Eclipsing Binary Par 1802: Non-Coevality or Tidal Heating?

Chew, Yilen Gomez Maqueo; Stassun, Keivan G.; Prsa, Andrej; Stempels, Eric et al.

Part of Astrophysical Journal, p. 58, 2012

• DOI for Luminosity Discrepancy in the Equal-Mass, Pre-Main-Sequence Eclipsing Binary Par 1802: Non-Coevality or Tidal Heating?

Modelling circumbinary gas flows in close T Tauri binaries star

de Val-Borro, M.; Gahm, G. F.; Stempels, Henricus C.; Peplinski, A.

Part of Monthly notices of the Royal Astronomical Society, p. 2679-2688, 2011

• DOI for Modelling circumbinary gas flows in close T Tauri binaries star

Independent Discovery of the Transiting Exoplanet HAT-P-14b

Simpson, E. K.; Barros, S. C. C.; Brown, D. J. A.; Cameron, A. Collier et al.

Part of Astronomical Journal, p. 161, 2011

• DOI for Independent Discovery of the Transiting Exoplanet HAT-P-14b

The search for magnetic fields in mercury-manganese stars

Makaganiuk, Vitalii; Kochukhov, Oleg; Piskunov, Nikolai; Jeffers, S. V. et al.

Part of Astronomy and Astrophysics, 2011

• DOI for The search for magnetic fields in mercury-manganese stars

WASP-37b: A 1.8 MJ exoplanet transiting a metal-poor star

Simpson, E. K.; Faedi, F.; Barros, S. C. C.; Brown, D. J. A. et al.

Part of Astronomical Journal, p. 8, 2011

• DOI for WASP-37b: A 1.8 MJ exoplanet transiting a metal-poor star

M67-1194, an unusually Sun-like solar twin in M67

Önehag, Anna; Korn, Andreas; Gustafsson, Bengt; Stempels, Eric et al.

Part of Astronomy and Astrophysics, 2011

• DOI for M67-1194, an unusually Sun-like solar twin in M67

No magnetic field in the spotted HgMn star mu Leporis

Kochukhov, Oleg; Makaganiuk, Vitalii; Piskunov, Nikolai; Jeffers, S. V. et al.

Part of Astronomy and Astrophysics, 2011

• DOI for No magnetic field in the spotted HgMn star mu Leporis

The spin-orbit angles of the transiting exoplanets WASP-1b, WASP-24b, WASP-38b and HAT-P-8b from Rossiter-McLaughlin observations

Simpson, E. K.; Pollacco, D.; Cameron, A. Collier; Hebrard, G. et al.

Part of Monthly notices of the Royal Astronomical Society, p. 3023-3035, 2011

• DOI for The spin-orbit angles of the transiting exoplanets WASP-1b, WASP-24b, WASP-38b and HAT-P-8b from Rossiter-McLaughlin observations

Anders Celsius' contributions to meridian arc measurements and the establishment of an astronomical observatory in Uppsala

Stempels, Henricus C.

Part of Baltic Astronomy, p. 179-185, 2011

Chemical spots in the absence of magnetic field in the binary HgMn star 66 Eridani

Makaganiuk, Vitalii; Kochukhov, Oleg; Piskunov, Nikolai; Jeffers, S. V. et al.

Part of Astronomy and Astrophysics, 2011

• DOI for Chemical spots in the absence of magnetic field in the binary HgMn star 66 Eridani

Precise orbit solution of MML 53, a low-mass, pre-main sequence eclipsing binary in Upper Centaurus Lupus

Hebb, L.; Cegla, H. M.; Stassun, K. G.; Stempels, Henricus Cornelis et al.

Part of Astronomy and Astrophysics, 2011

• DOI for Precise orbit solution of MML 53, a low-mass, pre-main sequence eclipsing binary in Upper Centaurus Lupus

Accretion-powered chromospheres in classical T Tauri stars

Petrov, P. P.; Gahm, G. F.; Stempels, Henricus C.; Walter, F. M. et al.

Part of Astronomy and Astrophysics, 2011

• DOI for Accretion-powered chromospheres in classical T Tauri stars

HARPSpol - The New Polarimetric Mode for HARPS

Piskunov, Nikolai; Snik, F.; Dolgopolov, A.; Kochukhov, Oleg et al.

Part of The Messenger, p. 7-10, 2011

WASP-21b: a hot-Saturn exoplanet transiting a thick disc star

Bouchy, F.; Hebb, L.; Skillen, I.; Cameron, A. Collier et al.

Part of Astronomy and Astrophysics, 2010

• DOI for WASP-21b: a hot-Saturn exoplanet transiting a thick disc star

A multi-site campaign to measure solar-like oscillations in Procyon. II. mode frequencies

Bedding, Timothy R.; Kjeldsen, Hans; Campante, Tiago L.; Appourchaux, Thierry et al.

Part of Astrophysical Journal, p. 935-949, 2010

• DOI for A multi-site campaign to measure solar-like oscillations in Procyon. II. mode frequencies

WASP-24 B: A new transiting close-in hot jupiter orbiting a late F-star

Street, R. A.; Simpson, E.; Barros, S. C. C.; Pollacco, D. et al.

Part of Astrophysical Journal, p. 337-343, 2010

• DOI for WASP-24 B: A new transiting close-in hot jupiter orbiting a late F-star

MML 53: a new low-mass, pre-main sequence eclipsing binary in the Upper Centaurus-Lupus region discovered by SuperWASP

Hebb, L.; Stempels, Henricus; Aigrain, S.; Collier-Cameron, A. et al.

Part of Astronomy and Astrophysics, 2010

• DOI for MML 53: a new low-mass, pre-main sequence eclipsing binary in the Upper Centaurus-Lupus region discovered by SuperWASP

Metals in the exosphere of the highly irradiated planet WASP-12b

Fossati, L.; Haswell, C. A.; Froning, C. S.; Hebb, L. et al.

Part of Astrophysical Journal Letters, 2010

• DOI for Metals in the exosphere of the highly irradiated planet WASP-12b

Observation and modelling of main sequence star chromospheres - XIII. The Na i D1 and D2, and He i D3 lines in dM1 stars

Houdebine, E. R.; Stempels, Henricus C.; Oliveira, J. H.

Part of Monthly notices of the Royal Astronomical Society, p. 238-247, 2009

• DOI for Observation and modelling of main sequence star chromospheres - XIII. The Na i D1 and D2, and He i D3 lines in dM1 stars

The Photosphere and Veiling Spectrum of T Tauri Stars

Stempels, Eric H.C.; Piskunov, Nikolai

Part of Astronomy and Astrophysics, p. 693-706, 2003

• DOI for The Photosphere and Veiling Spectrum of T Tauri Stars

Detailed analysis of Balmer lines in cool dwarf stars

Barklem, Paul; Stempels, H.C.; Allende Prieto, C.; Kochukhov, Oleg et al.

Part of Astronomy & Astrophysics, p. 951, 2002

Spectroscopy of T Tauri stars with UVES. Observations and analysis of RU Lup

Stempels, H.C.; Piskunov, Nikolai

Part of Astronomy & Astrophysics, p. 595, 2002

Spectroscopy of T Tauri stars with UVES: Observations and analysis of RU Lup

Stempels, H.C.; Piskunov, N.

Part of Astronomy & Astrophysics, p. 595-608, 2002

Formation of Fe x-Fe XIV coronal lines in the accretion shock of T Tauri stars

Lamzin, SA; Stempels, HC; Piskunov, Nikolai

Part of Astronomy & Astrophysics, p. 965-970, 2001

Formation of Fe X-Fe XIV coronal lines in the accretion shock of T Tauri stars

Lamzin, S.A.; Stempels, H.C.; Piskunov, N.E.

Part of Astronomy & Astrophysics, p. 965-970, 2001

The Vienna Atomic Line Data Base - a status report

Ryabchikova, T. A.; Piskunov, Nikolai; Stempels, H. C.; Kupka, F. et al.

Part of Physica scripta. T, p. 162-173, 1999

• DOI for The Vienna Atomic Line Data Base - a status report

VALD-2: Progress of the Vienna Atomic Line Data Base

Kupka, F.; Piskunov, Nikolai; Ryabchikova, T. A.; Stempels, H. C. et al.

Part of Astronomy and Astrophysics Supplement Series, p. 119-133, 1999

• DOI for VALD-2: Progress of the Vienna Atomic Line Data Base

An Observational Study of Accretion Processes in T Tauri Stars

Stempels, Henricus Cornelis

2003

• Download full text (pdf) of An Observational Study of Accretion Processes in T Tauri Stars

ANDES, the high resolution spectrograph for the ELT: evolution of the Fiber-Link subsystem after the System Architecture Review

Brucalassi, A.; Tozzi, A.; Oliva, E.; Araiza-Duran, J. A. et al.

Part of Ground-Based and Airborne Instrumentation for Astronomy X, 2024

• DOI for ANDES, the high resolution spectrograph for the ELT: evolution of the Fiber-Link subsystem after the System Architecture Review

ANDES, the high resolution spectrograph for the ELT: science goals, project overview and future developments

Marconi, A.; Abreu, M.; Adibekyan, V; Alberti, V et al.

Part of Ground-Based and Airborne Instrumentation for Astronomy X, 2024

• DOI for ANDES, the high resolution spectrograph for the ELT: science goals, project overview and future developments

ANDES, the high-resolution spectrograph for the ELT: project management for the preliminary design phase

Di Marcantonio, Paolo; Stempels, Eric H. C.; Giro, Enrico; Alberti, Valentina et al.

Part of Modeling, Systems Engineering, and Project Management for Astronomy XI, 2024

• DOI for ANDES, the high-resolution spectrograph for the ELT: project management for the preliminary design phase

CRIRES+ on sky: High spectral resolution at infrared wavelength enabling better science at the ESO VLT

Dorn, Reinhold J.; Bristow, Paul; Smoker, Jonathan; Rodler, Florian et al.

Part of Ground-Based And Airborne Instrumentation For Astronomy IX, 2022

• DOI for CRIRES+ on sky: High spectral resolution at infrared wavelength enabling better science at the ESO VLT

ANDES, the high resolution spectrograph for the ELT: science case, baseline design and path to construction

Marconi, A.; Abreu, M.; Adibekyan, V.; Alberti, V. et al.

Part of GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY IX, 2022

• DOI for ANDES, the high resolution spectrograph for the ELT: science case, baseline design and path to construction

ANDES, the high resolution spectrograph for the ELT: project management and system engineering approaches for mastering its preliminary design phase

Di Marcantonio, P.; Zanutta, A.; Marconi, A.; Abreu, M. et al.

Part of MODELING, SYSTEMS ENGINEERING, AND PROJECT MANAGEMENT FOR ASTRONOMY X, 2022

• DOI for ANDES, the high resolution spectrograph for the ELT: project management and system engineering approaches for mastering its preliminary design phase

ELT-HIRES, the high resolution spectrograph for the ELT: Phase A study and path to construction

Marconi, Alessandro; Abreu, M.; Adibekyan, V; Aliverti, M. et al.

Part of Ground-based and Airborne Instrumentation for Astronomy VIII, 2020

• DOI for ELT-HIRES, the high resolution spectrograph for the ELT: Phase A study and path to construction

A unique infrared spectropolarimetric unit for CRIRES+

Piskunov, Nikolai; Stempels, Eric; Lavail, Alexis; Escuti, Michael et al.

Part of GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY VII, 2018

• DOI for A unique infrared spectropolarimetric unit for CRIRES+

ELT-HIRES, the high resolution spectrograph for the ELT: results from the Phase A study

Marconi, A.; Prieto, C. Allende; Amado, P. J.; Amate, M. et al.

Part of GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY VII, 2018

• DOI for ELT-HIRES, the high resolution spectrograph for the ELT: results from the Phase A study

Full System Test and early Preliminary Acceptance Europe results for CRIRES

Brucalassi, Anna; Dorn, Reinhold J.; Follert, Roman; Hatzes, Artie et al.

Part of Ground-Based And Airborne Instrumentation For Astronomy VII, 2018

• DOI for Full System Test and early Preliminary Acceptance Europe results for CRIRES

The " plus " for CRIRES: enabling better science at infrared wavelength and high spectral resolution at the ESO VLT

Dorn, Reinhold J.; Follert, Roman; Bristow, Paul; Cumani, Claudio et al.

Part of GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY VI, 2016

• DOI for The " plus " for CRIRES: enabling better science at infrared wavelength and high spectral resolution at the ESO VLT

EELT-HIRES the high-resolution spectrograph for the E-ELT

Marconi, A.; Di Marcantonio, P.; D'Odorico, V.; Cristiani, S. et al.

Part of GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY VI, 2016

• DOI for EELT-HIRES the high-resolution spectrograph for the E-ELT

HARS3 for a Roboticized Isaac Newton Telescope

Thompson, Samantha J.; Queloz, Didier; Baraffe, Isabelle; Brake, Martyn et al.

Part of GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY VI, 2016

• DOI for HARS3 for a Roboticized Isaac Newton Telescope

Characterizing the cross dispersion reflection gratings of CRIRES

Follert, Roman; Taubert, Dieter; Hollandt, Joerg; Monte, Christian et al.

Part of Advances In Optical And Mechanical Technologies For Telescopes And Instrumentation Ii, 2016

• DOI for Characterizing the cross dispersion reflection gratings of CRIRES

Spectroscopic Study of the Low Mass Benchmark Eclipsing Binary UV Piscium

Feiden, Gregory A.; Stempels, Eric; Hebb, L.; Mack, C. E. et al.

Part of Living Together, p. 174-174, 2015

Wavelength calibration from 1-5 mu m for the CRIRES plus high-resolution spectrograph at the VLT

Seemann, U.; Anglada-Escude, G.; Baade, D.; Bristow, P. et al.

Part of GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY V, 2014

• DOI for Wavelength calibration from 1-5 mu m for the CRIRES plus high-resolution spectrograph at the VLT

CRIRES plus: a cross-dispersed high-resolution infrared spectrograph for the ESO VLT

Follert, R.; Dorn, R. J.; Oliva, E.; Lizon, J. L. et al.

Part of GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY V, 2014

• DOI for CRIRES plus: a cross-dispersed high-resolution infrared spectrograph for the ESO VLT

HIRES: The High Resolution Spectrograph for E-ELT

Zerbi, F. M.; Bouchy, F.; Fynbo, J.; Maiolino, R. et al.

Part of Ground-based and Airborne Instrumentation for Astronomy V, 2014

• DOI for HIRES: The High Resolution Spectrograph for E-ELT

Concept and optical design of the cross-disperser module for CRIRES+

Oliva, E.; Tozzi, A.; Ferruzzi, D.; Origlia, L. et al.

Part of GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY V, 2014

• DOI for Concept and optical design of the cross-disperser module for CRIRES+

Novel infrared polarimeter for the ESO CRIRES plus instrument

Lockhart, Matthew; Piskunov, Nikolai; Stempels, Eric; Escuti, Michael et al.

Part of GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY V, 2014

• DOI for Novel infrared polarimeter for the ESO CRIRES plus instrument

The HARPS Polarimeter

Snik, F.; Kochukhov, Oleg; Piskunov, Nikolai; Rodenhuis, M. et al.

Part of Solar Polarization 6, 2011

The search for magnetic fields in mercury-manganese stars

Makaganiuk, Vitalii; Kochukhov, Oleg; Piskunov, Nikolai; Jeffers, Sandra V. et al.

Part of Active OB stars, p. 202-203, 2011

• DOI for The search for magnetic fields in mercury-manganese stars

Balmer lines and effective temperatures in cool stars

Barklem, Paul; Stempels, H.C.; Kochukhov, Oleg; Piskunov, Nikolai et al.

Part of 12th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, p. 1103, 2003

Probing Magnetospheric Infall onto CTTS with Time-resolved Veiling Measurements

Stempels, H.C.; Piskunov, Nikolai

Part of 12th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, p. 735, 2003

Hydrogen Line Formation in Cool Stars

Barklem, Paul; Kochukhov, Oleg; Piskunov, Nikolai; O'Mara, B. J. et al.

Part of 11th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun, p. 766, 2001

Recent Developments of the VALD Database

Stempels, H.C.; Piskunov, Nikolai; Barklem, Paul

Part of 11th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun, p. 878, 2001

A Fiber-Linked Four Stokes-Parameter Polarimeter for the SOFIN Spectrometer on the Nordic Optical Telescope

Pettersson, Bertil; Stempels, Eric; Piskunov, Nikolai

Part of Fiber Optics in Astronomy III, p. 343, 1998

NLTE Calculations of Hydrogen Emission Lines in T Tauri Stars

Stempels, H.C.; von Rekowski, B.; Piskunov, N.

The close T Tauri binary V 4046 Sagitarii

Stempels, H.C.; Gahm, G.