Grand-design spirals in the core of NGC 5248

S. Laine; J. Knapen; D. Perez-Ramirez; R. Doyon; D. Nadeau

doi:10.1023/A:1017576024087

Grand-design spirals in the core of NGC 5248

S. Laine, J. Knapen, D. Perez-Ramirez, R. Doyon, D. Nadeau

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

Abstract

We report the detection of a bisymmetric nuclear spiral structure in the spiral galaxy NGC 5248.The two red spiral arms can be followed for about 3 arcsec, before they appear to end inside the radius of the circumnuclear starburst `ring' at about 5.5 arcsec or 400 pc distance from the nucleus. We combine our near-infrared Canada–France–Hawaii Telescope adaptive optics images with traditional near-infrared and optical images and show that spiral structure is present in this galaxy at spatial scales reaching from a hundred parsecs to 15 kpc. Comparison with a Hubble Space Telescope ultraviolet image shows how the starburst ring is related to the nuclear spiral structure. We also show a two-dimensional Hα velocity field that reveals no evidence for systematic streaming motions near the nuclear spiral or the starburst ring, nor for a rapidly rising rotation curve.

Original language	English
Pages (from-to)	475-482
Journal	Astrophysics and Space Science
Volume	276
Issue number	2/4
DOIs	https://doi.org/10.1023/A:1017576024087
Publication status	Published - 2001

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title = "Grand-design spirals in the core of NGC 5248",

abstract = "We report the detection of a bisymmetric nuclear spiral structure in the spiral galaxy NGC 5248.The two red spiral arms can be followed for about 3 arcsec, before they appear to end inside the radius of the circumnuclear starburst `ring' at about 5.5 arcsec or 400 pc distance from the nucleus. We combine our near-infrared Canada–France–Hawaii Telescope adaptive optics images with traditional near-infrared and optical images and show that spiral structure is present in this galaxy at spatial scales reaching from a hundred parsecs to 15 kpc. Comparison with a Hubble Space Telescope ultraviolet image shows how the starburst ring is related to the nuclear spiral structure. We also show a two-dimensional Hα velocity field that reveals no evidence for systematic streaming motions near the nuclear spiral or the starburst ring, nor for a rapidly rising rotation curve.",

author = "S. Laine and J. Knapen and D. Perez-Ramirez and R. Doyon and D. Nadeau",

note = "“The original publication is available at www.springerlink.com”. Copyright Springer. [Full text of this article is not available in the UHRA]",

year = "2001",

doi = "10.1023/A:1017576024087",

language = "English",

volume = "276",

pages = "475--482",

journal = "Astrophysics and Space Science",

issn = "0004-640X",

publisher = "Springer Nature Link",

number = "2/4",

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TY - JOUR

T1 - Grand-design spirals in the core of NGC 5248

AU - Laine, S.

AU - Knapen, J.

AU - Perez-Ramirez, D.

AU - Doyon, R.

AU - Nadeau, D.

N1 - “The original publication is available at www.springerlink.com”. Copyright Springer. [Full text of this article is not available in the UHRA]

PY - 2001

Y1 - 2001

N2 - We report the detection of a bisymmetric nuclear spiral structure in the spiral galaxy NGC 5248.The two red spiral arms can be followed for about 3 arcsec, before they appear to end inside the radius of the circumnuclear starburst `ring' at about 5.5 arcsec or 400 pc distance from the nucleus. We combine our near-infrared Canada–France–Hawaii Telescope adaptive optics images with traditional near-infrared and optical images and show that spiral structure is present in this galaxy at spatial scales reaching from a hundred parsecs to 15 kpc. Comparison with a Hubble Space Telescope ultraviolet image shows how the starburst ring is related to the nuclear spiral structure. We also show a two-dimensional Hα velocity field that reveals no evidence for systematic streaming motions near the nuclear spiral or the starburst ring, nor for a rapidly rising rotation curve.

AB - We report the detection of a bisymmetric nuclear spiral structure in the spiral galaxy NGC 5248.The two red spiral arms can be followed for about 3 arcsec, before they appear to end inside the radius of the circumnuclear starburst `ring' at about 5.5 arcsec or 400 pc distance from the nucleus. We combine our near-infrared Canada–France–Hawaii Telescope adaptive optics images with traditional near-infrared and optical images and show that spiral structure is present in this galaxy at spatial scales reaching from a hundred parsecs to 15 kpc. Comparison with a Hubble Space Telescope ultraviolet image shows how the starburst ring is related to the nuclear spiral structure. We also show a two-dimensional Hα velocity field that reveals no evidence for systematic streaming motions near the nuclear spiral or the starburst ring, nor for a rapidly rising rotation curve.

U2 - 10.1023/A:1017576024087

DO - 10.1023/A:1017576024087

M3 - Article

SN - 0004-640X

VL - 276

SP - 475

EP - 482

JO - Astrophysics and Space Science

JF - Astrophysics and Space Science

IS - 2/4

ER -

Grand-design spirals in the core of NGC 5248

Abstract

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