A wide-field H I study of the NGC 1566 group

Virginia A. Kilborn; Bärbel S. Koribalski; Duncan A. Forbes; David G. Barnes; Ruth C. Musgrave

doi:10.1111/j.1365-2966.2004.08450.x

A wide-field H I study of the NGC 1566 group

Virginia A. Kilborn, Bärbel S. Koribalski, Duncan A. Forbes, David G. Barnes, Ruth C. Musgrave

Research output: Contribution to journal › Article › Research › peer-review

50 Citations (Scopus)

Abstract

We report on neutral hydrogen observations of a ∼5.5 × 5.5 deg² field around the NGC 1566 galaxy group with the multibeam narrow-band system on the 64-m Parkes Telescope. We detected 13 H I sources in the field, including two galaxies not previously known to be members of the group, bringing the total number of confirmed galaxies in this group to 26. Each of the H I galaxies can be associated with an optically catalogued galaxy. No 'intergalactic H I clouds' were found to an Hi mass limit of ∼3.5 × 10⁸M⊙. We have estimated the expected H I content of the late-type galaxies in this group and find that the total detected H I is consistent with our expectations. However, while no global H I deficiency is inferred for this group, two galaxies exhibit individual H I deficiencies. Further observations are needed to determine the gas removal mechanisms in these galaxies.

Original language	English
Pages (from-to)	77-88
Number of pages	12
Journal	Monthly Notices of the Royal Astronomical Society
Volume	356
Issue number	1
DOIs	https://doi.org/10.1111/j.1365-2966.2004.08450.x
Publication status	Published - 1 Jan 2005
Externally published	Yes

Keywords

Galaxies: clusters: general
Galaxies: individual: NGC 1549
Galaxies: individual: NGC 1553
Galaxies: individual: NGC 1566
Radio lines: galaxies
Surveys

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10.1111/j.1365-2966.2004.08450.x

Cite this

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title = "A wide-field H I study of the NGC 1566 group",

abstract = "We report on neutral hydrogen observations of a ∼5.5 × 5.5 deg2 field around the NGC 1566 galaxy group with the multibeam narrow-band system on the 64-m Parkes Telescope. We detected 13 H I sources in the field, including two galaxies not previously known to be members of the group, bringing the total number of confirmed galaxies in this group to 26. Each of the H I galaxies can be associated with an optically catalogued galaxy. No 'intergalactic H I clouds' were found to an Hi mass limit of ∼3.5 × 108M⊙. We have estimated the expected H I content of the late-type galaxies in this group and find that the total detected H I is consistent with our expectations. However, while no global H I deficiency is inferred for this group, two galaxies exhibit individual H I deficiencies. Further observations are needed to determine the gas removal mechanisms in these galaxies.",

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T1 - A wide-field H I study of the NGC 1566 group

AU - Kilborn, Virginia A.

AU - Koribalski, Bärbel S.

AU - Forbes, Duncan A.

AU - Barnes, David G.

AU - Musgrave, Ruth C.

PY - 2005/1/1

Y1 - 2005/1/1

N2 - We report on neutral hydrogen observations of a ∼5.5 × 5.5 deg2 field around the NGC 1566 galaxy group with the multibeam narrow-band system on the 64-m Parkes Telescope. We detected 13 H I sources in the field, including two galaxies not previously known to be members of the group, bringing the total number of confirmed galaxies in this group to 26. Each of the H I galaxies can be associated with an optically catalogued galaxy. No 'intergalactic H I clouds' were found to an Hi mass limit of ∼3.5 × 108M⊙. We have estimated the expected H I content of the late-type galaxies in this group and find that the total detected H I is consistent with our expectations. However, while no global H I deficiency is inferred for this group, two galaxies exhibit individual H I deficiencies. Further observations are needed to determine the gas removal mechanisms in these galaxies.

AB - We report on neutral hydrogen observations of a ∼5.5 × 5.5 deg2 field around the NGC 1566 galaxy group with the multibeam narrow-band system on the 64-m Parkes Telescope. We detected 13 H I sources in the field, including two galaxies not previously known to be members of the group, bringing the total number of confirmed galaxies in this group to 26. Each of the H I galaxies can be associated with an optically catalogued galaxy. No 'intergalactic H I clouds' were found to an Hi mass limit of ∼3.5 × 108M⊙. We have estimated the expected H I content of the late-type galaxies in this group and find that the total detected H I is consistent with our expectations. However, while no global H I deficiency is inferred for this group, two galaxies exhibit individual H I deficiencies. Further observations are needed to determine the gas removal mechanisms in these galaxies.

KW - Galaxies: clusters: general

KW - Galaxies: individual: NGC 1549

KW - Galaxies: individual: NGC 1553

KW - Galaxies: individual: NGC 1566

KW - Radio lines: galaxies

KW - Surveys

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DO - 10.1111/j.1365-2966.2004.08450.x

M3 - Article

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SN - 0035-8711

VL - 356

SP - 77

EP - 88

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

ER -

A wide-field H I study of the NGC 1566 group

Abstract

Keywords

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