J/A+A/659/A89 Aperture-corrected SN Ia host properties (Galbany+, 2022)
Aperture-corrected spectroscopic type Ia supernova host galaxy properties.
Galbany L., Smith M., Duarte Puertas S., Gonzalez-Gaitan S., Pessa I.,
Sako M., Iglesias-Paramo J., Lopez-Sanchez A. R., Molla M., Vilchez J.M.
<Astron. Astrophys. 659, A89 (2022)>
=2022A&A...659A..89G 2022A&A...659A..89G (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, photometry ; Galaxies, spectra ; Galaxies, optical ;
Supernovae
Keywords: dark energy - galaxies: star formation - techniques: spectroscopic -
supernovae: general - galaxies: abundances
Abstract:
We use type Ia supernova (SN Ia) data obtained by the Sloan Digital
Sky Survey-II Supernova Survey (SDSS-II SNS) in combination with the
publicly available SDSS DR16 fiber spectroscopy of supernova (SN) host
galaxies to correlate SN Ia light-curve parameters and Hubble
residuals with several host galaxy properties. Fixed-aperture fiber
spectroscopy suffers from aperture effects: the fraction of the galaxy
covered by the fiber varies depending on its projected size on the
sky, and thus measured properties are not representative of the whole
galaxy. The advent of integral field spectroscopy has provided a way
to correct the missing light, by studying how these galaxy parameters
change with the aperture size. Here we study how the standard SN host
galaxy relations change once global host galaxy parameters are
corrected for aperture effects. We recover previous trends on SN
Hubble residuals with host galaxy properties, but we find that
discarding objects with poor fiber coverage instead of correcting for
aperture loss introduces biases into the sample that affect SN host
galaxy relations. The net effect of applying the commonly used
g-band fraction criterion is that intrinsically faint SNe Ia in
high-mass galaxies are discarded, thus artificially increasing the
height of the mass step by 0.02 mag and its significance. Current and
next-generation fixed-aperture fiber-spectroscopy surveys, such as
DES, DESI, or TiDES in 4MOST, that aim to study SN and galaxy
correlations must consider, and correct for, these effects.
Description:
Host galaxy parameters measured from the observed spectrum (Case A),
scaling to the total photometry (Case B), and after applying aperture
corrections (Case C).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tabled1.dat 138 723 Results for the 3 Cases
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See also:
II/333 : Sloan Digital Sky Survey-II Supernova Survey (Sako+, 2018)
Byte-by-byte Description of file: tabled1.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- SNID Supernova-galaxy ID,
SDSS-II SN NNNNN in Simbad
7- 11 F5.2 [Msun] logMassA log10 Stellar mass (Case A)
13- 16 F4.2 [Msun] e_logMassA Error on log10 Stellar mass (Case A)
18- 22 F5.2 [Msun] logMassB log10 Stellar mass (Case B)
24- 27 F4.2 [Msun] e_logMassB Error on log10 Stellar mass (Case B)
29- 33 F5.2 [Msun/yr] logSFRA log10 Star-formation rate (Case A)
35- 38 F4.2 [Msun/yr] e_logSFRA Error on log10 Star-formation rate (Case A)
40- 44 F5.2 [Msun/yr] logSFRB log10 Star-formation rate (Case B)
46- 49 F4.2 [Msun/yr] e_logSFRB Error on log10 Star-formation rate (Case B)
51- 55 F5.2 [Msun/yr] logSFRC log10 Star-formation rate (Case C)
57- 60 F4.2 [Msun/yr] e_logSFRC Error on log10 Star-formation rate (Case C)
62- 65 F4.2 --- [O/H]A Oxygen abundance (Case A)
67- 70 F4.2 --- e_[O/H]A Error on Oxygen abundance (Case A)
72- 75 F4.2 --- [O/H]B Oxygen abundance (Case B)
77- 80 F4.2 --- e_[O/H]B Error on Oxygen abundance (Case B)
82- 85 F4.2 --- [O/H]C Oxygen abundance (Case C)
87- 90 F4.2 --- e_[O/H]C Error on Oxygen abundance (Case C)
92- 95 F4.2 mag AVA ? Extinction (Case A)
97-100 F4.2 mag e_AVA ? Error on Extinction (Case A)
102-105 F4.2 mag AVC ? Extinction (Case C)
107-110 F4.2 mag e_AVC ? Error on Extinction (Case C)
112-118 F7.2 0.1nm EWHaA ? Halpha EW (Case A)
120-124 F5.2 0.1nm e_EWHaA ? Error on Halpha EW (Case A)
126-132 F7.2 0.1nm EWHaC ? Halpha EW (Case C)
134-138 F5.2 0.1nm e_EWHaC ? Error on Halpha EW (Case C)
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Acknowledgements:
Lluis Galbany, lgalbany(at)ice.csic.es
(End) Lluis Galbany [Ice-CSIC, Spain], Patricia Vannier [CDS] 09-Dec-2021