In-flight calibration of the ROSAT HRI ultraviolet sensitivity

Marco Barbera, Zombeck, Collura, Barbera, Stephen Murray, Micela

Risultato della ricerca: Article

5 Citazioni (Scopus)

Abstract

Comparing measured and estimated count rates of a few selected sample stars, we confirm the validity and provide the in-flight calibration of the ROSAT HRI UV/visible effective area model in Zombeck et al. The count rate estimates for Betelgeuse derived with this model are in agreement with the measured HRI upper limit. This result is also confirmed in an erratum by Berghöfer et al. aimed at revising their previous calculation, which was overestimated by more than 2 orders of magnitude. Adopting this ROSAT HRI UV/visible effective area model and measured UV/visible spectra of a set of sample stars covering the range of Teff 3000-40,000 K, we have built the calibration curves to estimate UV/visible contamination count rates for any star of known Teff, mv, and NH.
Lingua originaleEnglish
pagine (da-a)449-453
Numero di pagine5
RivistaTHE ASTROPHYSICAL JOURNAL
Volume545
Stato di pubblicazionePublished - 2000

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flight
calibration
stars
sensitivity
visible spectrum
estimates
contamination
coverings
curves
rate
calculation

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cita questo

Barbera, M., Zombeck, Collura, Barbera, Murray, S., & Micela (2000). In-flight calibration of the ROSAT HRI ultraviolet sensitivity. THE ASTROPHYSICAL JOURNAL, 545, 449-453.

In-flight calibration of the ROSAT HRI ultraviolet sensitivity. / Barbera, Marco; Zombeck; Collura; Barbera; Murray, Stephen; Micela.

In: THE ASTROPHYSICAL JOURNAL, Vol. 545, 2000, pag. 449-453.

Risultato della ricerca: Article

Barbera, M, Zombeck, Collura, Barbera, Murray, S & Micela 2000, 'In-flight calibration of the ROSAT HRI ultraviolet sensitivity', THE ASTROPHYSICAL JOURNAL, vol. 545, pagg. 449-453.
Barbera M, Zombeck, Collura, Barbera, Murray S, Micela. In-flight calibration of the ROSAT HRI ultraviolet sensitivity. THE ASTROPHYSICAL JOURNAL. 2000;545:449-453.
Barbera, Marco ; Zombeck ; Collura ; Barbera ; Murray, Stephen ; Micela. / In-flight calibration of the ROSAT HRI ultraviolet sensitivity. In: THE ASTROPHYSICAL JOURNAL. 2000 ; Vol. 545. pagg. 449-453.
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abstract = "Comparing measured and estimated count rates of a few selected sample stars, we confirm the validity and provide the in-flight calibration of the ROSAT HRI UV/visible effective area model in Zombeck et al. The count rate estimates for Betelgeuse derived with this model are in agreement with the measured HRI upper limit. This result is also confirmed in an erratum by Bergh{\"o}fer et al. aimed at revising their previous calculation, which was overestimated by more than 2 orders of magnitude. Adopting this ROSAT HRI UV/visible effective area model and measured UV/visible spectra of a set of sample stars covering the range of Teff 3000-40,000 K, we have built the calibration curves to estimate UV/visible contamination count rates for any star of known Teff, mv, and NH.",
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T1 - In-flight calibration of the ROSAT HRI ultraviolet sensitivity

AU - Barbera, Marco

AU - Zombeck, null

AU - Collura, null

AU - Barbera, null

AU - Murray, Stephen

AU - Micela, null

PY - 2000

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N2 - Comparing measured and estimated count rates of a few selected sample stars, we confirm the validity and provide the in-flight calibration of the ROSAT HRI UV/visible effective area model in Zombeck et al. The count rate estimates for Betelgeuse derived with this model are in agreement with the measured HRI upper limit. This result is also confirmed in an erratum by Berghöfer et al. aimed at revising their previous calculation, which was overestimated by more than 2 orders of magnitude. Adopting this ROSAT HRI UV/visible effective area model and measured UV/visible spectra of a set of sample stars covering the range of Teff 3000-40,000 K, we have built the calibration curves to estimate UV/visible contamination count rates for any star of known Teff, mv, and NH.

AB - Comparing measured and estimated count rates of a few selected sample stars, we confirm the validity and provide the in-flight calibration of the ROSAT HRI UV/visible effective area model in Zombeck et al. The count rate estimates for Betelgeuse derived with this model are in agreement with the measured HRI upper limit. This result is also confirmed in an erratum by Berghöfer et al. aimed at revising their previous calculation, which was overestimated by more than 2 orders of magnitude. Adopting this ROSAT HRI UV/visible effective area model and measured UV/visible spectra of a set of sample stars covering the range of Teff 3000-40,000 K, we have built the calibration curves to estimate UV/visible contamination count rates for any star of known Teff, mv, and NH.

KW - Instrumentation: detectors

KW - Nuclear and High Energy Physics

KW - Space and Planetary Science

KW - Stars: early-type

KW - Stars: late-type

KW - Ultraviolet: stars

KW - X-rays: stars

UR - http://hdl.handle.net/10447/215274

UR - http://iopscience.iop.org/0004-637X/

M3 - Article

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JO - THE ASTROPHYSICAL JOURNAL

JF - THE ASTROPHYSICAL JOURNAL

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