| Issue |
A&A
Volume 414, Number 1, January IV 2004
|
|
|---|---|---|
| Page(s) | 23 - 43 | |
| Section | Extragalactic astronomy | |
| DOI | https://doi.org/10.1051/0004-6361:20031568 | |
| Published online | 12 January 2004 | |
The H
galaxy survey*,**
I. The galaxy sample, H
narrow-band observations
and star formation
parameters for 334 galaxies
1
Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD, UK e-mail: paj,nss,cac,je,smp,This email address is being protected from spambots. You need JavaScript enabled to view it.
2
Instituto de Astrofísica de Canarias, C. Vía Láctea s/n 38200-La Laguna, Tenerife, Spain e-mail: jeb,This email address is being protected from spambots. You need JavaScript enabled to view it.
3
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
4
School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, UK e-mail: ppxkf,This email address is being protected from spambots. You need JavaScript enabled to view it.
5
Department of Physical Sciences, University of Hertfordshire, Hatfield, Hertfordshire, AL10 9AB, UK e-mail: knapen,This email address is being protected from spambots. You need JavaScript enabled to view it.
6
Isaac Newton Group of Telescopes, Apartado 321, 38700 Santa Cruz de La Palma, Spain
7
Department of Pure and Applied Physics, Queen's University Belfast, University Road, Belfast BT7 1NN, UK e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
8
UKIRT, Joint Astronomy Centre, 660 North A'ohoku Place, University Park, Hilo, HI96720, USA e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Corresponding author: P. A. James, This email address is being protected from spambots. You need JavaScript enabled to view it.
Received:
25
November
2002
Accepted:
1
October
2003
Abstract
We discuss the selection and observations of a large
sample of nearby galaxies, which we are using to quantify the star
formation activity in the local Universe. The sample consists of 334
galaxies across all Hubble types from S0/a to Im and with recession
velocities of between 0 and 3000 km s-1. The basic data for each
galaxy are narrow band H
[Nii] and R-band imaging, from which we
derive star formation rates, H[Nii] equivalent widths and surface
brightnesses, and R-band total magnitudes. A strong correlation is found
between total star formation rate and Hubble type, with the strongest star
formation in isolated galaxies occurring in Sc and Sbc types. More
surprisingly, no significant trend is found between H[Nii] equivalent
width and galaxy R-band luminosity. More detailed analyses of the data
set presented here will be described in subsequent papers.
Key words: galaxies: general / galaxies: spiral / galaxies: irregular / galaxies: fundamental parameters / galaxies: photometry / galaxies: statistics
Based on observations made with the Jacobus Kapteyn Telescope operated on the island of La Palma by the Isaac Newton Group in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias.
The full version of Table [see full text] is available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/414/23 Reduced image data for this survey can be downloaded from http://www.astro.livjm.ac.uk/HaGS/
© ESO, 2004
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