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Investigating merging galaxies by using Pan-STARRS images
- Source :
- Astronomy & astrophysics, 2017, Vol.600, pp.A28 [Peer Reviewed Journal]
- Publication Year :
- 2017
- Publisher :
- EDP Sciences, 2017.
-
Abstract
- Aims. We studied the r ′-, z ′-, and y ′-band images of merging galaxies from the observations of the Panoramic Survey Telescope & Rapid Response System (Pan-STARRS). The merging galaxies were selected from our merging catalog that was created by checking the images of the Red-Sequence Cluster Survey 2 from the observations of the Canada France Hawaii Telescope.Methods. By using the homomorphic-aperture, we determined the photometric results of these merging systems. To obtain accurate photometry, we calibrated the Pan-STARRS r ′-, z ′-, and y ′-band data to match the results of Sloan Digital Sky Survey Data Release 9. We also investigated the stellar masses of the merging galaxies by comparing the Wide-field Infrared Survey Explorer 3.4 μ m emission with the calibrated y ′-band data.Results. We present a catalog of the r ′-, z ′-, and y ′-band photometric results for 4698 merging galaxies. For extended sources, our results suggest that the homomorphic-aperture method can obtain more reasonable results than the Desktop Virtual Observatory photometry. We derived new relations between the Pan-STARRS y ′-band luminosities and the stellar masses of the merging galaxies. Our results show that the stellar masses of the merging galaxies range from 108 to 1013 M ⊙ ; some of the dry mergers could be as massive as 1013 M ⊙ .
- Subjects :
- Physics
Luminous infrared galaxy
010308 nuclear & particles physics
Infrared
media_common.quotation_subject
Astrophysics::Instrumentation and Methods for Astrophysics
Astronomy
Astronomy and Astrophysics
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Virtual observatory
Galaxy merger
01 natural sciences
law.invention
Telescope
Photometry (optics)
Space and Planetary Science
Sky
law
0103 physical sciences
Astrophysics::Solar and Stellar Astrophysics
Astrophysics::Earth and Planetary Astrophysics
010303 astronomy & astrophysics
Astrophysics::Galaxy Astrophysics
media_common
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Astronomy & astrophysics, 2017, Vol.600, pp.A28 [Peer Reviewed Journal]
- Accession number :
- edsair.doi.dedup.....6aae44cdb1d47782b6fc8ad1832fc1d4