High-resolution imaging of Virgo cluster galaxies - I. Observational techniques and first results

N. R. Tanvir; T. Shanks; J. V. Major; A. P. Doel; C. N. Dunlop; R. M. Myers; R. M. Redfern; P. O'kane; M. N. Devaney

doi:10.1093/mnras/253.1.21P

High-resolution imaging of Virgo cluster galaxies - I. Observational techniques and first results

N. R. Tanvir, T. Shanks, J. V. Major, A. P. Doel, C. N. Dunlop, R. M. Myers, R. M. Redfern, P. O'kane, M. N. Devaney

Physics

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Abstract

We investigate the potential of the image sharpening technique for making high-resolution images of Virgo cluster galaxies, in order to obtain new estimates of this cluster's distance. We have used both the Galway Image Sharpening Camera (Redfern et al.) and the MARTINI instrument (Doel et al.) at the William Herschel Telescope to confirm Fried's ≈ 4r₀ optimum aperture for image sharpening. We have further used the MARTINI image sharpening instrument to observe the Virgo galaxy, IC3583. The resulting image has 0.60-arcsec FWHM seeing but to a limiting magnitude of R = 21.7 mag the brightest stars in IC3583 are not resolved. This tentatively suggests a lower limit to the Virgo distance modulus of m - M > 30.7 mag.

Original language	English
Pages (from-to)	21P-24P
Journal	Monthly Notices of the Royal Astronomical Society
Volume	253
Issue number	1
DOIs	https://doi.org/10.1093/mnras/253.1.21P
Publication status	Published - 1 Nov 1991

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title = "High-resolution imaging of Virgo cluster galaxies - I. Observational techniques and first results",

abstract = "We investigate the potential of the image sharpening technique for making high-resolution images of Virgo cluster galaxies, in order to obtain new estimates of this cluster's distance. We have used both the Galway Image Sharpening Camera (Redfern et al.) and the MARTINI instrument (Doel et al.) at the William Herschel Telescope to confirm Fried's ≈ 4r0 optimum aperture for image sharpening. We have further used the MARTINI image sharpening instrument to observe the Virgo galaxy, IC3583. The resulting image has 0.60-arcsec FWHM seeing but to a limiting magnitude of R = 21.7 mag the brightest stars in IC3583 are not resolved. This tentatively suggests a lower limit to the Virgo distance modulus of m - M > 30.7 mag.",

author = "Tanvir, \{N. R.\} and T. Shanks and Major, \{J. V.\} and Doel, \{A. P.\} and Dunlop, \{C. N.\} and Myers, \{R. M.\} and Redfern, \{R. M.\} and P. O'kane and Devaney, \{M. N.\}",

note = "Publisher Copyright: {\textcopyright} 1991 Royal Astronomical Society. Provided by the NASA Astrophysics Data System.",

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doi = "10.1093/mnras/253.1.21P",

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T1 - High-resolution imaging of Virgo cluster galaxies - I. Observational techniques and first results

AU - Tanvir, N. R.

AU - Shanks, T.

AU - Major, J. V.

AU - Doel, A. P.

AU - Dunlop, C. N.

AU - Myers, R. M.

AU - Redfern, R. M.

AU - O'kane, P.

AU - Devaney, M. N.

PY - 1991/11/1

Y1 - 1991/11/1

N2 - We investigate the potential of the image sharpening technique for making high-resolution images of Virgo cluster galaxies, in order to obtain new estimates of this cluster's distance. We have used both the Galway Image Sharpening Camera (Redfern et al.) and the MARTINI instrument (Doel et al.) at the William Herschel Telescope to confirm Fried's ≈ 4r0 optimum aperture for image sharpening. We have further used the MARTINI image sharpening instrument to observe the Virgo galaxy, IC3583. The resulting image has 0.60-arcsec FWHM seeing but to a limiting magnitude of R = 21.7 mag the brightest stars in IC3583 are not resolved. This tentatively suggests a lower limit to the Virgo distance modulus of m - M > 30.7 mag.

AB - We investigate the potential of the image sharpening technique for making high-resolution images of Virgo cluster galaxies, in order to obtain new estimates of this cluster's distance. We have used both the Galway Image Sharpening Camera (Redfern et al.) and the MARTINI instrument (Doel et al.) at the William Herschel Telescope to confirm Fried's ≈ 4r0 optimum aperture for image sharpening. We have further used the MARTINI image sharpening instrument to observe the Virgo galaxy, IC3583. The resulting image has 0.60-arcsec FWHM seeing but to a limiting magnitude of R = 21.7 mag the brightest stars in IC3583 are not resolved. This tentatively suggests a lower limit to the Virgo distance modulus of m - M > 30.7 mag.

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DO - 10.1093/mnras/253.1.21P

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SP - 21P-24P

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

ER -

High-resolution imaging of Virgo cluster galaxies - I. Observational techniques and first results

Abstract

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