Eric Stempels

Discovery of the pre-main-sequence eclipsing binary MML 48

Gomez Maqueo Chew, Y.; Hebb, L.; Stempels, Eric; Walter, F. M. et al.

Part of Astronomy and Astrophysics, 2025

• DOI for Discovery of the pre-main-sequence eclipsing binary MML 48
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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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Discovery of the pre-main-sequence eclipsing binary MML 48

Gomez Maqueo Chew, Y.; Hebb, L.; Stempels, Eric; Walter, F. M. et al.

Part of Astronomy and Astrophysics, 2025

• DOI for Discovery of the pre-main-sequence eclipsing binary MML 48
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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

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

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

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?

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

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

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

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

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

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

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

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

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

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

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

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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

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

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

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

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

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+

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.