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.

Ingår i Astronomy and Astrophysics, 2025

• DOI för 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.

Ingår i Ground-Based and Airborne Instrumentation for Astronomy X, 2024

• DOI för 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.

Ingår i Ground-Based and Airborne Instrumentation for Astronomy X, 2024

• DOI för 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.

Ingår i Modeling, Systems Engineering, and Project Management for Astronomy XI, 2024

• DOI för 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.

Ingår i Astronomy and Astrophysics, 2023

• DOI för Determination of small-scale magnetic fields on Sun-like stars in the near-infrared using CRIRES+
• Ladda ner fulltext (pdf) av Determination of small-scale magnetic fields on Sun-like stars in the near-infrared using CRIRES+

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

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

Ingår i Astronomy and Astrophysics, 2025

• DOI för Discovery of the pre-main-sequence eclipsing binary MML 48
• Ladda ner fulltext (pdf) av Discovery of the pre-main-sequence eclipsing binary MML 48

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.

Ingår i Astronomy and Astrophysics, 2023

• DOI för Determination of small-scale magnetic fields on Sun-like stars in the near-infrared using CRIRES+
• Ladda ner fulltext (pdf) av Determination of small-scale magnetic fields on Sun-like stars in the near-infrared using CRIRES+

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.

Ingår i Astronomy and Astrophysics, 2023

• DOI för 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.

Ingår i Astronomy and Astrophysics, 2023

• DOI för 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.

Ingår i Atoms, 2020

• DOI för A Decade with VAMDC: Results and Ambitions
• Ladda ner fulltext (pdf) av A Decade with VAMDC: Results and Ambitions

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

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

Ingår i Meteoritics and Planetary Science, s. 1853-1869, 2019

• DOI för 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.

Ingår i Astronomy and Astrophysics, 2019

• DOI för 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.

Ingår i Astronomy and Astrophysics, 2018

• DOI för 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.

Ingår i Journal of Physics B, 2016

• DOI för The virtual atomic and molecular data centre (VAMDC) consortium
• Ladda ner fulltext (pdf) av The virtual atomic and molecular data centre (VAMDC) consortium

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.

Ingår i Astronomy and Astrophysics, 2015

• DOI för 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.

Ingår i Physica Scripta, 2015

• DOI för 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.

Ingår i Astronomy and Astrophysics, 2014

• DOI för 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.

Ingår i Astronomical Notes - Astronomische Nachrichten, s. 41-45, 2014

• DOI för 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.

Ingår i Astronomy and Astrophysics, 2013

• DOI för 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.

Ingår i Astronomy and Astrophysics, 2013

• DOI för 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.

Ingår i Astrophysical Journal, s. 11, 2013

• DOI för 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.

Ingår i Astronomy and Astrophysics, 2013

• DOI för Three-dimensional magnetic and abundance mapping of the cool Ap star HD 24712: I. Spectropolarimetric observations in all four Stokes parameters
• Ladda ner fulltext (pdf) av Three-dimensional magnetic and abundance mapping of the cool Ap star HD 24712: I. Spectropolarimetric observations in all four Stokes parameters

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

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

Ingår i Astronomy and Astrophysics, 2012

• DOI för 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.

Ingår i Astrophysical Journal, s. 119, 2012

• DOI för 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.

Ingår i Astronomy and Astrophysics, 2012

• DOI för 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.

Ingår i Astrophysical Journal, s. 58, 2012

• DOI för 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.

Ingår i Astronomy and Astrophysics, 2011

• DOI för 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.

Ingår i Astronomical Journal, s. 161, 2011

• DOI för 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.

Ingår i Astronomy and Astrophysics, 2011

• DOI för 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.

Ingår i Astronomical Journal, s. 8, 2011

• DOI för 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.

Ingår i Monthly notices of the Royal Astronomical Society, s. 2679-2688, 2011

• DOI för 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.

Ingår i Astronomy and Astrophysics, 2011

• DOI för 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.

Ingår i Monthly notices of the Royal Astronomical Society, s. 3023-3035, 2011

• DOI för 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.

Ingår i Astronomy and Astrophysics, 2011

• DOI för 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.

Ingår i Baltic Astronomy, s. 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.

Ingår i Astronomy and Astrophysics, 2011

• DOI för 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.

Ingår i Astronomy and Astrophysics, 2011

• DOI för 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.

Ingår i The Messenger, s. 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.

Ingår i Astronomy and Astrophysics, 2010

• DOI för 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.

Ingår i Astronomy and Astrophysics, 2010

• DOI för 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.

Ingår i Astrophysical Journal, s. 935-949, 2010

• DOI för 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.

Ingår i Astrophysical Journal, s. 337-343, 2010

• DOI för 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.

Ingår i Astrophysical Journal Letters, 2010

• DOI för 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.

Ingår i Monthly notices of the Royal Astronomical Society, s. 238-247, 2009

• DOI för 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

Ingår i Astronomy and Astrophysics, s. 693-706, 2003

• DOI för 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.

Ingår i Astronomy & Astrophysics, s. 951, 2002

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

Stempels, H.C.; Piskunov, Nikolai

Ingår i Astronomy & Astrophysics, s. 595, 2002

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

Stempels, H.C.; Piskunov, N.

Ingår i Astronomy & Astrophysics, s. 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

Ingår i Astronomy & Astrophysics, s. 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.

Ingår i Astronomy & Astrophysics, s. 965-970, 2001

The Vienna Atomic Line Data Base - a status report

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

Ingår i Physica scripta. T, s. 162-173, 1999

• DOI för 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.

Ingår i Astronomy and Astrophysics Supplement Series, s. 119-133, 1999

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

An Observational Study of Accretion Processes in T Tauri Stars

Stempels, Henricus Cornelis

2003

• Ladda ner fulltext (pdf) av 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.

Ingår i Ground-Based and Airborne Instrumentation for Astronomy X, 2024

• DOI för 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.

Ingår i Ground-Based and Airborne Instrumentation for Astronomy X, 2024

• DOI för 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.

Ingår i Modeling, Systems Engineering, and Project Management for Astronomy XI, 2024

• DOI för 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.

Ingår i Ground-Based And Airborne Instrumentation For Astronomy IX, 2022

• DOI för 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.

Ingår i GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY IX, 2022

• DOI för 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.

Ingår i MODELING, SYSTEMS ENGINEERING, AND PROJECT MANAGEMENT FOR ASTRONOMY X, 2022

• DOI för 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.

Ingår i Ground-based and Airborne Instrumentation for Astronomy VIII, 2020

• DOI för 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.

Ingår i GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY VII, 2018

• DOI för 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.

Ingår i GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY VII, 2018

• DOI för 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.

Ingår i Ground-Based And Airborne Instrumentation For Astronomy VII, 2018

• DOI för 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.

Ingår i Advances In Optical And Mechanical Technologies For Telescopes And Instrumentation Ii, 2016

• DOI för 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.

Ingår i GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY VI, 2016

• DOI för 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.

Ingår i GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY VI, 2016

• DOI för 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.

Ingår i GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY VI, 2016

• DOI för 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.

Ingår i Living Together, s. 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.

Ingår i GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY V, 2014

• DOI för 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.

Ingår i GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY V, 2014

• DOI för 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.

Ingår i GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY V, 2014

• DOI för 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.

Ingår i Ground-based and Airborne Instrumentation for Astronomy V, 2014

• DOI för 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.

Ingår i GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY V, 2014

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

The HARPS Polarimeter

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

Ingår i Solar Polarization 6, 2011

The search for magnetic fields in mercury-manganese stars

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

Ingår i Active OB stars, s. 202-203, 2011

• DOI för 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.

Ingår i 12th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, s. 1103, 2003

Probing Magnetospheric Infall onto CTTS with Time-resolved Veiling Measurements

Stempels, H.C.; Piskunov, Nikolai

Ingår i 12th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, s. 735, 2003

Hydrogen Line Formation in Cool Stars

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

Ingår i 11th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun, s. 766, 2001

Recent Developments of the VALD Database

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

Ingår i 11th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun, s. 878, 2001

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

Pettersson, Bertil; Stempels, Eric; Piskunov, Nikolai

Ingår i Fiber Optics in Astronomy III, s. 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.