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Date and Time of the Query: 2019-08-22 T12:21:13 PDT
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For refcode 2000MNRAS.316..357G:
Retrieve 67 NED objects in this reference.
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NED Abstract

Copyright by Royal Astronomical Society. 2000MNRAS.316..357G Star formation properties of Universidad Complutense de Madrid survey galaxies A. Gil de Paz, A. Aragon-Salamanca, J. Gallego, A. Alonso-Herrero, J. Zamorano and G. Kauffmann Accepted 2000 February 25. Received 1999 November 8; in original form 1999 July 19 ABSTRACT We present new near-infrared J and K imaging data for 67 galaxies from the Universidad Complutense de Madrid (UCM) survey used in the determination of the SFR density of the local Universe by Gallego et al. This is a sample of local star-forming galaxies with redshift lower than 0.045, and they constitute a representative subsample of the galaxies in the complete UCM survey. From the new data, complemented with our own Gunn-r images and long-slit optical spectroscopy, we have measured integrated K-band luminosities, r-J and J-K colours, and H{alpha} luminosities and equivalent widths. Using a maximum likelihood estimator and a complete set of evolutionary synthesis models, these observations allow us to estimate the strength of the current (or most recent) burst of star formation, its age, the star formation rate and the total stellar mass of the galaxies. An average galaxy in the sample has a stellar mass of 5x10^10^ M_sun_ and is undergoing (or has recently completed) a burst of star formation involving about 2 per cent of its total stellar mass. We identify two separate classes of star-forming galaxies in the UCM sample: low-luminosity, high- excitation galaxies (H II like) and relatively luminous spiral galaxies (starburst disc-like). The former show higher specific star formation rates (SFRs per unit mass) and burst strengths, and lower stellar masses than the latter. With regard to their specific star formation rates, the UCM galaxies are intermediate objects between normal quiescent spirals and the most extreme H II galaxies. Keywords: stars: formation - galaxies: evolution - galaxies: photometry - infrared: galaxies
Retrieve 67 NED objects in this reference.
Please click here for ADS abstract

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