Author name code: houtgast
ADS astronomy entries on 2022-09-14
author:"Houtgast, Jakob"
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Title: In de schaduw van de maan.
Authors: Houtgast, J.
Bibcode: 1981Zenit...8..444H
Altcode:
  No abstract at ADS

Title: Report on the Dutch expedition to observe the 1973 June 30
    solar eclipse I.
Authors: Houtgast, J.; Namba, O.
Bibcode: 1979PRNAA..82..209H
Altcode: 1979RNAAS..82..209H
  No abstract at ADS

Title: Report on the Dutch expedition to observe the 1973 June 30
    solar eclipse. I, II.
Authors: Houtgast, J.; Namba, O.
Bibcode: 1979PKNAW..82..209H
Altcode:
  No abstract at ADS

Title: Report on the Dutch expedition to observe the 1973 june 30
    solar eclipse (II)
Authors: Houtgast, J.; Namba, O.
Bibcode: 1979PRNAA..82..223H
Altcode: 1979RNAAS..82..223H
  No abstract at ADS

Title: Book reviews
Authors: van Diggelen, J.; Ne'Eman, Yuval; Nyboer, B. R. A.; Kleczek,
   J.; Dobrzycki, Jerzy; Hartmann, G.; Swider, W.; Hempenius, S. A.;
   de Jager, C.; 't Hooft, G.; Radelaar, S.; Wisse, J. A.; de Jong, T.;
   Houtgast, J.; Bezemer, J.
Bibcode: 1978SSRv...21..703V
Altcode:
  No abstract at ADS

Title: Report of the Dutch expedition to the 1970 March 7 solar
    eclipse.
Authors: Houtgast, J.; Namba, C.; Rutten, R. J.
Bibcode: 1976PKNAW..79..221H
Altcode:
  No abstract at ADS

Title: Report of the Dutch expedition to the 1970 March 7 solar
    eclipse. Ch. 1.
Authors: Houtgast, J.; Namba, O.; Rutten, R. J.
Bibcode: 1976seob.conf....3H
Altcode:
  No abstract at ADS

Title: Report of the Dutch expedition to the 1970 March 7 solar
    eclipse.
Authors: Houtgast, J.; Namba, O.; Rutten, R. J.
Bibcode: 1976PRNAA..79..221H
Altcode: 1976RNAAS..79..221H
  No abstract at ADS

Title: A 16-mm film "Solar spectrum at the extreme limb observed
    during the 1973 June 30 total eclipse at Atar, Mauritania.
Authors: Houtgast, J.; Namba, O.
Bibcode: 1975MmArc.105..115H
Altcode:
  No abstract at ADS

Title: A 16-mm film "Solar spectrum at the extreme limb observed
    during the 1973 June 30 total eclipse at Atar, Mauritania"
Authors: Houtgast, J.; Namba, O.
Bibcode: 1975cesra...5..115H
Altcode:
  No abstract at ADS

Title: Line-Intensities in the Photosphere-Chromosphere Transition
Region. II: Observational Material from the 1961 Eclipse at Brač
Authors: Van Dessel, E. L.; Houtgast, J.; Koelbloed, D.
Bibcode: 1973SoPh...33..375V
Altcode:
  We present results from eclipse spectra in the wavelength region
  4588-4682 Å, taken during the eclipse of February 15, 1961 at Brač,
  Yugoslavia. Absolute line intensities have been determined in the
  photosphere-chromosphere transition region. The method of reduction is
  discussed in Section 2 and the observed variation of the total intensity
  as a function of the height is shown for a number of lines in Figures
  5-8. The results for the Fe I lines are compared with computations
  (as described in Paper I: van Dessel, 1970) for various solar model
  atmospheres (Section 4). The model, which combines Holweger's (1967)
  temperature distribution for the excitation temperature with the HSRA
  model (Gingerich et al., 1971) for the electron temperature, yields
  a better agreement than all pure LTE-models.

Title: The Representation of the Semi-Annual Variation of the
    Geomagnetic Activity by an Annual Sine Wave
Authors: Houtgast, J.; Van Sluiters, A.
Bibcode: 1973SoPh...31..513H
Altcode:
  The seasonal variation of the geomagnetic activity shows two sharp
  maxima (in March and September) and two broader minima (in June and
  December). It can only poorly be described by a double sine wave.

Title: Spectral Lines from Photosphere to Chromosphere, Observed
    During the March 1970 Eclipse; A First Comparison with Theory (Papers
    presented at the Proceedings of the International Symposium on the
    1970 Solar Eclipse, held in Seattle, U. S. A. , 18-21 June, 1971.)
Authors: Houtgast, J.; Namba, O.; Rutten, R. J.; Wijbenga, J. W.
Bibcode: 1971SoPh...21..281H
Altcode: 1972SoPh...21..281H
  A brief report is presented on observations of line profile variations
  in the transition region from the photosphere to the chromosphere,
  based on high-resolution eclipse spectrograms. We also show some
  computations for several lines whose behaviour agrees in general with
  the observations.

Title: The International Symposium on the 1970 solar eclipse.
Authors: Houtgast, J.
Bibcode: 1971SoPh...21..259H
Altcode: 1971SoPh...21..259.
  No abstract at ADS

Title: Solar Physics at the Utrecht Astronomical INstitute
Authors: Fokker, A. D.; Houtgast, J.; De Jager, C.
Bibcode: 1971SoPh...16..227F
Altcode:
  No abstract at ADS

Title: Description of an Observational Method for Determining Absolute
    Intensities in the Solar Spectrum between λ 2962 Å and λ 4087 Å
Authors: Houtgast, J.
Bibcode: 1970SoPh...15..273H
Altcode:
  The results of measurements of absolute intensities in the spectrum
  of the centre of the sun's disk in the wavelength region 2977-4087
  Å have already been published (Houtgast 1965, 1968) and use has
  been made of them on different occasions. The intensities at 206
  spectral points have been given, chosen as much as possible between
  the Fraunhofer lines, but well divided over the region. Each strip of
  the Utrecht (Minnaert et al., 1940) and Göttingen (Brückner, 1960)
  Atlases contains at least two points. Later (Houtgast and Namba, 1968)
  four more points were added below λ 2977 Å.

Title: Variations in Line Profiles from Photosphere to Chromosphere
Authors: Houtgast, J.; Namba, O.; Rutten, R. J.; de Graauw, Th.
Bibcode: 1970Natur.226.1144H
Altcode:
  No abstract at ADS

Title: M. G. J. Minnaert, died October 26, 1970.
Authors: Houtgast, J.
Bibcode: 1970HemD...68..289H
Altcode:
  No abstract at ADS

Title: Equator-Pole Effect in the Central Intensities of Some Strong
    Solar Fraunhofer Lines
Authors: Burger, Marijke; Houtgast, J.
Bibcode: 1969SoPh....9..296B
Altcode:
  Uncorrected central intensities of the Fraunhofer lines NaD<SUB>1</SUB>
  and D<SUB>2</SUB>, Mgb<SUB>1</SUB> and b<SUB>2</SUB>, and Hβ have
  been determined at a number of points along the S-W limb of the sun,
  from equator to pole, using photographic spectra taken at the Locarno
  station of the Göttingen Observatory. No significant pole-equator
  variation could be found in excess of the observational errors which
  are of the order of 2%.

Title: De Siberische zonsverduistering van 22 september 1968.
Authors: Houtgast, J.
Bibcode: 1969HemD...67...31H
Altcode:
  No abstract at ADS

Title: Continuum location and total line absorption in the solar
    spectrum from 2988 to 4087 A
Authors: Houtgast, J.; Namba, O.
Bibcode: 1968BAN....20...87H
Altcode:
  No abstract at ADS

Title: Book review
Authors: Houtgast, J.
Bibcode: 1968SoPh....4..126H
Altcode: 1968SoPh....4..126.
  No abstract at ADS

Title: The Occurrence and Possible Meaning of the 'nimbus'
Authors: Houtgast, J.
Bibcode: 1968IAUS...35..483H
Altcode:
  No abstract at ADS

Title: The High-Dispersion Continuous Ultraviolet Solar Spectrum
    and the Balmer-Jump
Authors: Houtgast, J.
Bibcode: 1968SoPh....3...47H
Altcode:
  Among the intensities, determined at about 200 wavelengths between λ
  3000 and λ 4100 Å in the spectrum of the centre of the sun's disk
  (HOUTGAST, 1965), the 32 highest ones (windows) were plotted and
  compared with absolute intensities given by other authors.

Title: The continuum background in the Utrecht Photometric Atlas,
    as assumed for the 1966 catalogue
Authors: Houtgast, J.; Minnaert, M. G. J.
Bibcode: 1968BANS....2..415H
Altcode: 1967BANS....2..415H
  No abstract at ADS

Title: The geomagnetic activity around conjunction and opposition
    of planets
Authors: Houtgast, J.; van Sluiters, A.
Bibcode: 1967maco.conf..399H
Altcode:
  No abstract at ADS

Title: The solar spectrum 2935 A to 8770 A
Authors: Moore, Charlotte E.; Minnaert, M. G. J.; Houtgast, J.
Bibcode: 1966sst..book.....M
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  No abstract at ADS

Title: Uncertainties in the Determination of Equivalent Widths
Authors: Houtgast, J.
Bibcode: 1966IAUS...26...38H
Altcode:
  No abstract at ADS

Title: Report of the Working Group on Solar Eclipses
Authors: Houtgast, J.
Bibcode: 1966IAUTB..12..170H
Altcode:
  No abstract at ADS

Title: Hα-absorption in the solar flare nimbus of June 1, 1960
Authors: Houtgast, J.
Bibcode: 1963BAN....17...56H
Altcode:
  No abstract at ADS

Title: A New Estimate of the Strength of the Magnetic Field of the
    Planet Venus
Authors: Houtgast, J.; van Sluiters, A.
Bibcode: 1962Natur.196..462H
Altcode:
  IN some earlier publications<SUP>1</SUP>, attention was directed to
  the behaviour of the geomagnetic activity around the dates of lower
  conjunction of Venus. It appeared that, especially at times of weak
  solar activity and with conjunctions, where Venus passed the Sun at
  a small angular distance, seen from the Earth, a screening effoct of
  Venus on the solar corpuscula was found from 6 days before up to 1
  day after the date of conjunction. An estimate of the strength of the
  magnetic field of Venus met with difficulties.

Title: Absolute intensities of strong chromospheric emission lines
    of H He and Ca II at the eclipse of 30 June 1954
Authors: Houtgast, J.
Bibcode: 1962BAN....16..115H
Altcode:
  No abstract at ADS

Title: Report of the Netherlands expedition for the observation of
    the total solar eclispe on February 15, 1961.
Authors: Houtgast, J.
Bibcode: 1962PRNAA..65..313H
Altcode: 1962RNAAS..65..313H
  No abstract at ADS

Title: Report of the Netherlands expedition for the observation of
    the total solar eclipse on october 2, 1959.
Authors: Houtgast, J.
Bibcode: 1960PRNAA..63..611H
Altcode: 1960RNAAS..63..611H
  No abstract at ADS

Title: Quantitative photometric measurements with a Lyot filter
Authors: van Griethuysen, I. G.; Houtgast, J.
Bibcode: 1959BAN....14..279V
Altcode:
  No abstract at ADS

Title: Line intensities in the flash spectrum of the total solar
    eclipse at Khartoum, February 25, 1952.
Authors: Houtgast, Jakob
Bibcode: 1957lifs.book.....H
Altcode: 1957QB4.U8l13p3....
  No abstract at ADS

Title: Line intensities in the flash spectrum of the total solar
    eclipse at Khartoum, February 25, 1952
Authors: Houtgast, Jakob
Bibcode: 1957RAOU....3.....H
Altcode:
  No abstract at ADS

Title: The influence of the inner planets on the earth's magnetic
    field
Authors: Houtgast, J.
Bibcode: 1956sei..conf..302H
Altcode:
  No abstract at ADS

Title: Report of the Netherlands expedition to Ceylon.
Authors: Houtgast, J.
Bibcode: 1956PRNAA..59..335H
Altcode: 1956RNAAS..59..335H
  No abstract at ADS

Title: Indication of a Magnetic Field of the Planet Venus
Authors: Houtgast, J.
Bibcode: 1955Natur.175..678H
Altcode:
  IF Venus had a magnetic field, it would at inferior conjunctions
  influence the corpuscular streams from the sun to the earth. We
  should expect a variation, probably a decrease, of the corpuscular
  intensity, which could reflect itself in the international daily
  magnetic character figures.

Title: Absolute intensities in high dispersion solar spectra between
    3000 and .4000 Angstrom.
Authors: Houtgast, J.
Bibcode: 1955PRNAA..58..306H
Altcode: 1955RNAAS..58..306H
  No abstract at ADS

Title: Preliminary report concerning the eclipse of June 30 1954
    and the Dutch expedition to Gotland.
Authors: Houtgast, J.; van Heel, A. C. S.; Minnaert, M. G. J.
Bibcode: 1954PRNAA..57..596H
Altcode: 1954RNAAS..57..596H
  No abstract at ADS

Title: Observations and computations about centre limb variations
    of Fraunhofer lines
Authors: Houtgast, J.
Bibcode: 1952BAN....11..475H
Altcode:
  No abstract at ADS

Title: A Photometric Investigation of the Sky-Light from Sunset
    to Sunrise
Authors: Houtgast, J.
Bibcode: 1952LIACo...3..117H
Altcode:
  No abstract at ADS

Title: Observations du rayonnement solaire sur la longueur d'onde
    de 55 centimètres
Authors: Laffineur, Marius; Houtgast, Jakob
Bibcode: 1949AnAp...12..137L
Altcode:
  No abstract at ADS

Title: The self-recording microphotometer of the Utrecht Observatory
Authors: Houtgast, J.
Bibcode: 1948BAN....10..417H
Altcode:
  No abstract at ADS

Title: Statistical investigations concerning the magnetic fields of
    sunspots I
Authors: Houtgast, J.; van Sluiters, A.
Bibcode: 1948BAN....10..325H
Altcode:
  No abstract at ADS

Title: Visual intensity estimates on atmospheric lines of water-vapour
    in the solar spectrum
Authors: Houtgast, J.; Hollander, J. A.; Boomsma, L. D.
Bibcode: 1948BAN....10..334H
Altcode:
  No abstract at ADS

Title: The variations in the profiles of strong Fraunhofer lines
    along a radius of the solar disc
Authors: Houtgast, Jakob
Bibcode: 1942PhDT........12H
Altcode: 1942vpsf.book.....H; 1942QB551.H68......
  No abstract at ADS

Title: L'Atlas Photometrique de Spectre Solaire.
Authors: Mulder, G. -F. -W.; Houtgast, J.; Chalonge, D.
Bibcode: 1942LAstr..56..166M
Altcode:
  No abstract at ADS

Title: Photometric Atlas of the solar Spectrum (Observatoire &lt;&lt;
    Sonnenborgh &gt;&gt;)
Authors: Minnaert, M.; Mulders, G. F. W.; Houtgast, J.
Bibcode: 1941AnAp....4..136M
Altcode:
  No abstract at ADS

Title: Bestimmung der Dämpfung zweier FeMultipletts für Mitte
    und Rand der Sonnenscheibe. (Mitteilungen des Astrophysikalischen
    Observatoriums, Potsdam, Nr. 7. ) Mit 6 Abbildungen.
Authors: ten Bruggencate, P.; Houtgast, J.
Bibcode: 1941ZA.....20..149T
Altcode:
  No abstract at ADS

Title: Photometric atlas of the solar spectrum from [lambda] 3612 to
    [lambda] 8771 with an appendix from [lambda] 3332 to [lambda] 3637
Authors: Minnaert, M.; Houtgast, J.; Mulders, G. F. W.
Bibcode: 1940pass.book.....M
Altcode:
  No abstract at ADS

Title: Beobachtungs- und Reduktionstechnik bei den Potsdamer
    Sspektralphotometrischen Untersuchungen von Fraunhoffer-Linien
Authors: ten Bruggencate, Paul; Houtgast, Jakob; von Kluber, Harald
Bibcode: 1939POPot...3.....T
Altcode: 1939POPot...3.....B
  No abstract at ADS

Title: Number 96. Band 29. Heft 3. Beobachtungs-und reduktionstechnik
    bei den potsdamer spektral photometrischen untersuchungen von
    fraunhofer-linien
Authors: Bruggencate, P.; Houtgast, J.; Kluber, H.
Bibcode: 1939POPot..29C...1B
Altcode:
  No abstract at ADS

Title: Beobachtungen der Mitte-Randänderungen von starken FRAUNHOFER
    schen Linien. Mit 4 Abbildungen.
Authors: Houtgast, J.
Bibcode: 1938ZA.....16...43H
Altcode:
  No abstract at ADS

Title: Direct Registration of Intensities in Spectrophotometric
    Work. Mit 3 Abbildungen.
Authors: Minnaert, M.; Houtgast, J.
Bibcode: 1938ZA.....15..354M
Altcode:
  No abstract at ADS

Title: Flügelprofile von starken Fraunhoferschen Linien als Funktion
    des Abstandes vom Zentrum der Sonnenscheibe. Mit 8 Abbildungen.
Authors: Minnaert, M.; Houtgast, J.
Bibcode: 1936ZA.....12...81M
Altcode:
  No abstract at ADS

Title: Photometrische Untersuchungen über das Funkeln der
    Fixsterne. (Mitteilung aus dem Heliophysikalischen Institutdes
    Physikalischen Laboratoriums Utrecht.) Mit 11 Abbildungen.
Authors: Minnaert, M.; Houtgast, J.
Bibcode: 1935ZA.....10...86M
Altcode:
  No abstract at ADS