SIMBAD references

2012A&A...545A..16G - Astronomy and Astrophysics, volume 545A, 16-16 (2012/9-1)

Hα3: an Hα imaging survey of HI selected galaxies from ALFALFA. I. Catalogue in the Local Supercluster.

GAVAZZI G., FUMAGALLI M., GALARDO V., GROSSETTI F., BOSELLI A., GIOVANELLI R., HAYNES M.P. and FABELLO S.

Abstract (from CDS):

We present Hα3 (acronym for Hα-αα), an Hα narrow-band imaging survey of ∼400 galaxies selected from the HI Arecibo Legacy Fast ALFA Survey (ALFALFA) in the Local Supercluster, including the Virgo cluster. By using hydrogen recombination lines as a tracer of recent star formation, we aim to investigate the relationships between atomic neutral gas and newly formed stars in different environments (cluster and field), morphological types (spirals and dwarfs), and over a wide range of stellar masses (∼107.5-1011.5M). We image in Hα+[NII] all the galaxies that contain more than 107M of neutral atomic hydrogen in the sky region 11h<RA<16h; 4°<Dec<16°; 350<cz<2000km/s using the San Pedro Martir 2m telescope. This survey provides a complete census of the star formation in HI rich galaxies of the local universe. We present the properties of the galaxy sample, together with Hα fluxes and equivalent widths. We find an excellent agreement between the fluxes determined from our images in apertures of 3-arcsec diameter and the fluxes derived from the SDSS spectral database. From the Hα fluxes corrected for galactic and internal extinction and for [NII] contamination we derive the global star formation rates (SFRs).

Abstract Copyright:

Journal keyword(s): galaxies: clusters: individual: Virgo - galaxies: fundamental parameters - galaxies: ISM

VizieR on-line data: <Available at CDS (J/A+A/545/A16): tableb1.dat tableb2.dat tableb3.dat>

Simbad objects: 242

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2019.12.14-10:13:28

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