Nuclear properties of a sample of nearby spiral galaxies from Hubble Space Telescope STIS imaging

C. Scarlata, M. Stiavelli, M. A. Hughes, D. Axon, A. Alonso-Herrero, J. Atkinson, D. Batcheldor, J. Binney, A. Capetti, C. M. Carollo, L. Dressel, J. Gerssen, D. Macchetto, W. Maciejewski, A. Marconi, M. Merrifield, M. Ruiz, W. Sparks, Zlatan Tsvetanov, R. P. Van Der Marel

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

We present surface photometry for the central regions of a sample of 48 spiral galaxies (mostly unbarred and barred of type Sbc or Sc) observed with the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope. Surface brightness profiles (SBPs) were derived and modeled with a Nuker law. We also analyzed archival Wide Field Planetary Camera 2 images with a larger field of view, which are available for 18 galaxies in our sample. We modeled the extracted bulge SBPs with an exponential, an r1/4, or an r n profile. In agreement with previous studies, we find that bulges of Sbc galaxies fall into two categories: bulges well described by an exponential profile and those well described by an r1/4 profile. Only one galaxy requires the use of a more general Sérsic profile to properly describe the bulge. Nuclear photometrically distinct components are found in ∼55% of the galaxies. For those that we classify as star clusters on the basis of their resolved extent, we find absolute magnitudes that are brighter on average than those previously identified in spiral galaxies. This might be due to a bias in our sample toward star-forming galaxies, combined with a trend for star-forming galaxies to host brighter central clusters.

Original languageEnglish
Pages (from-to)1124-1137
Number of pages14
JournalAstronomical Journal
Volume128
Issue number3 1785
DOIs
Publication statusPublished - Sep 2004
Externally publishedYes

Fingerprint

spiral galaxies
Hubble Space Telescope
galaxies
profiles
field of view
brightness
stars
star clusters
spectrographs
photometry
cameras
telescopes
trends

Keywords

  • Galaxies: bulges
  • Galaxies: nuclei
  • Galaxies: spiral
  • Galaxies: structure

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Scarlata, C., Stiavelli, M., Hughes, M. A., Axon, D., Alonso-Herrero, A., Atkinson, J., ... Van Der Marel, R. P. (2004). Nuclear properties of a sample of nearby spiral galaxies from Hubble Space Telescope STIS imaging. Astronomical Journal, 128(3 1785), 1124-1137. https://doi.org/10.1086/423036

Nuclear properties of a sample of nearby spiral galaxies from Hubble Space Telescope STIS imaging. / Scarlata, C.; Stiavelli, M.; Hughes, M. A.; Axon, D.; Alonso-Herrero, A.; Atkinson, J.; Batcheldor, D.; Binney, J.; Capetti, A.; Carollo, C. M.; Dressel, L.; Gerssen, J.; Macchetto, D.; Maciejewski, W.; Marconi, A.; Merrifield, M.; Ruiz, M.; Sparks, W.; Tsvetanov, Zlatan; Van Der Marel, R. P.

In: Astronomical Journal, Vol. 128, No. 3 1785, 09.2004, p. 1124-1137.

Research output: Contribution to journalArticle

Scarlata, C, Stiavelli, M, Hughes, MA, Axon, D, Alonso-Herrero, A, Atkinson, J, Batcheldor, D, Binney, J, Capetti, A, Carollo, CM, Dressel, L, Gerssen, J, Macchetto, D, Maciejewski, W, Marconi, A, Merrifield, M, Ruiz, M, Sparks, W, Tsvetanov, Z & Van Der Marel, RP 2004, 'Nuclear properties of a sample of nearby spiral galaxies from Hubble Space Telescope STIS imaging', Astronomical Journal, vol. 128, no. 3 1785, pp. 1124-1137. https://doi.org/10.1086/423036
Scarlata C, Stiavelli M, Hughes MA, Axon D, Alonso-Herrero A, Atkinson J et al. Nuclear properties of a sample of nearby spiral galaxies from Hubble Space Telescope STIS imaging. Astronomical Journal. 2004 Sep;128(3 1785):1124-1137. https://doi.org/10.1086/423036
Scarlata, C. ; Stiavelli, M. ; Hughes, M. A. ; Axon, D. ; Alonso-Herrero, A. ; Atkinson, J. ; Batcheldor, D. ; Binney, J. ; Capetti, A. ; Carollo, C. M. ; Dressel, L. ; Gerssen, J. ; Macchetto, D. ; Maciejewski, W. ; Marconi, A. ; Merrifield, M. ; Ruiz, M. ; Sparks, W. ; Tsvetanov, Zlatan ; Van Der Marel, R. P. / Nuclear properties of a sample of nearby spiral galaxies from Hubble Space Telescope STIS imaging. In: Astronomical Journal. 2004 ; Vol. 128, No. 3 1785. pp. 1124-1137.
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AU - Alonso-Herrero, A.

AU - Atkinson, J.

AU - Batcheldor, D.

AU - Binney, J.

AU - Capetti, A.

AU - Carollo, C. M.

AU - Dressel, L.

AU - Gerssen, J.

AU - Macchetto, D.

AU - Maciejewski, W.

AU - Marconi, A.

AU - Merrifield, M.

AU - Ruiz, M.

AU - Sparks, W.

AU - Tsvetanov, Zlatan

AU - Van Der Marel, R. P.

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