SDSS IV MaNGA: visual morphological and statistical characterization of the DR15 sample
Por:
Vazquez-Mata, J. A., Hernandez-Toledo, H. M., Avila-Reese, V, Herrera-Endoqui, M., Rodriguez-Puebla, A., Cano-Diaz, M., Lacerna, I, Martinez-Vazquez, L. A., Lane, R.
Publicada:
26 mar 2022
Resumen:
We present a detailed visual morphological classification for the 4614
MaNGA galaxies in SDSS Data Release 15, using image mosaics generated
from a combination of r band (SDSS and deeper DESI Legacy Surveys)
images and their digital post-processing. We distinguish 13 Hubble types
and identify the presence of bars and bright tidal debris. After
correcting the MaNGA sample for volume completeness, we calculate the
morphological fractions, the bi-variate distribution of type and stellar
mass M-* - where we recognize a morphological transition `valley'
around S0a-Sa types - and the variations of the g - i colour and
luminosity-weighted age over this distribution. We identified bars in
46.8 per cent of galaxies, present in all Hubble types later than S0.
This fraction amounts to a factor similar to 2 larger when compared with
other works for samples in common. We detected 14 per cent of galaxies
with tidal features, with the fraction changing with M-* and
morphology. For 355 galaxies, the classification was uncertain; they are
visually faint, mostly of low/intermediate masses, low concentrations,
and discy in nature. Our morphological classification agrees well with
other works for samples in common, though some particular differences
emerge, showing that our image procedures allow us to identify a wealth
of added value information as compared to SDSS-based previous estimates.
Based on our classification, we also propose an alternative criteria for
the E-S0 separation, in the structural semimajor to semiminor axis
versus bulge to total light ratio (b/a - B/T) and concentration versus
semimajor to semiminor axis (C - b/a) space.
Filiaciones:
Vazquez-Mata, J. A.:
Univ Nacl Autonoma Mexico, Inst Astron, AP 70-264, Cdmx 04510, Mexico
Univ Nacl Autonoma Mexico, Fac Ciencias, Dept Fis, Ciudad Univ, Cdmx 04510, Mexico
Hernandez-Toledo, H. M.:
Univ Nacl Autonoma Mexico, Inst Astron, AP 70-264, Cdmx 04510, Mexico
Avila-Reese, V:
Univ Nacl Autonoma Mexico, Inst Astron, AP 70-264, Cdmx 04510, Mexico
Herrera-Endoqui, M.:
Univ Nacl Autonoma Mexico, Inst Astron, Sede Ensenada, Km 107,Carret Tij Ens, Ensenada 22060, Baja California, Mexico
Rodriguez-Puebla, A.:
Univ Nacl Autonoma Mexico, Inst Astron, AP 70-264, Cdmx 04510, Mexico
Cano-Diaz, M.:
Univ Nacl Autonoma Mexico, Inst Astron, AP 70-264, Cdmx 04510, Mexico
Lacerna, I:
Univ Atacama, Inst Astron & Ciencias Planetarias, Copayapu 485, Copiapo, Chile
Millennium Inst Astrophys, Nuncio Monsenor Sotero Sanz 100,Of 104, Santiago, Chile
Martinez-Vazquez, L. A.:
Univ Nacl Autonoma Mexico, Inst Astron, AP 70-264, Cdmx 04510, Mexico
Lane, R.:
Univ Bernardo OHiggins, Ctr Invest Astron, Ave Viel 1497, Santiago, Chile
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