J/PASJ/65/103 PAH3.3um/IR luminosity for infrared galaxies (Yamada+, 2013)
A relation of the PAH 3.3µm feature with star-forming activity for galaxies
with a wide range of infrared luminosity.
Yamada R., Oyabu S., Kaneda H., Yamagishi M., Ishihara D., Kim J.H., Im M.
<Publ. Astron. Soc. Jap., 65, 103-103 (2013)>
=2013PASJ...65..103Y 2013PASJ...65..103Y
ADC_Keywords: Galaxies, IR ; Photometry, infrared
Keywords: galaxies: active - galaxies: starburst - infrared: galaxies
Abstract:
For star-forming galaxies, we investigated a global relation between
the polycyclic aromatic hydrocarbon (PAH) emission luminosity at
3.3um, LPAH3.3, and the infrared (8-1000um) luminosity, LIR, to
understand how the PAH 3.3um feature relates to star-formation
activity. With AKARI, we performed near-infrared (2.5-5um)
spectroscopy of 184 galaxies having LIR∼108-1013L☉.
We classified the samples into infrared galaxies (IRGs:
LIR<1011L☉), luminous infrared galaxies (LIRGs:
LIR∼1011-1012L☉ and ultra-luminous infrared galaxies
(ULIRGs: LIR>1012L☉). We excluded sources likely to be
contaminated by AGN activity, based on the rest-frame equivalent width
of the PAH emission feature (<40nm) and the power-law index,
representing the slope of continuum emission (Γ>;
Fν∝λ^Γ). Of these samples, 13 IRGs, 67 LIRGs,
and 20 ULIRGs show the PAH emission feature at λrest=3.3um in
their spectra. We find that the LPAH3.3/LIR ratio considerably
decreases toward the luminous end. Utilizing the mass and temperature
of dust grains as well as the Brα emission for the galaxies, we
discuss the cause of the relative decrease in the PAH emission with
LIR.
Description:
We selected our targets from the two AKARI mission programs,
Mid-infrared Search for Active Galactic Nuclei (MSAGN: Oyabu et al.
2011A&A...529A.122O 2011A&A...529A.122O) and Evolution of ULIRGs and AGNs (AGNUL).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 86 47 Basic properties of the galaxies with a significant
detection of the PAH 3.3um emission feature
table2.dat 84 32 Basic properties of the galaxies with no significant
detection of the PAH 3.3um emission feature
table3.dat 90 18 Derived properties of the IRGs
table4.dat 89 89 Derived properties of the LIRGs
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See also:
II/297 : AKARI/IRC mid-IR all-sky Survey (ISAS/JAXA, 2010)
II/298 : AKARI/FIS All-Sky Survey Point Source Catalogues (ISAS/JAXA, 2010)
Byte-by-byte Description of file: table[12].dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- Name Object name in the AKARI/IRC all-sky survey
point source catalog
17- 18 I2 h RAh 2MASS right ascension (J2000)
20- 21 I2 min RAm 2MASS right ascension (J2000)
23- 27 F5.2 s RAs 2MASS right ascension (J2000)
29 A1 --- DE- 2MASS declination sign (J2000)
30- 31 I2 deg DEd 2MASS declination (J2000)
33- 34 I2 arcmin DEm 2MASS declination (J2000)
36- 40 F5.2 arcsec DEs 2MASS declination (J2000)
42- 47 F6.4 --- z Redshift
49 A1 --- l_F9um Limit flag on 9um
50- 54 F5.1 mJy F9um AKARI S9W (9µm) flux densities
56- 59 F4.1 mJy e_F9um ? rms uncertainty on F9um
60 A1 --- n_F9um [*] Flux from AKARI images (1)
62 A1 --- l_F18um Limit flag on 18um
63- 65 I3 mJy F18um AKARI L18W (18µm) flux densities
67- 69 I3 mJy e_F18um ? rms uncertainty on F18um
70 A1 --- n_F18um [*] Flux from AKARI images (1)
72- 76 F5.2 mag Ksmag Ks magnitude taken from the 2MASS catalog
78- 86 F9.4 10+11Lsun LIR ?=- IR (8-1000um) luminosity (G1)
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Note (1): * = Flux densities not listed in the catalog, but obtained from the
original AKARI all-sky image data.
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Byte-by-byte Description of file: table[34].dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- Name Object name(s)
20- 25 F6.4 10+11Lsun LIR IR luminosity (G1)
27 A1 --- l_L3.3 Limit flag on L3.3
28- 32 F5.3 10+8Lsun L3.3 Luminosity of the PAH 3.3um emission
34- 38 F5.3 10+8Lsun e_L3.3 ? Luminosity of the PAH 3.3um emission
40 A1 --- l_LBra Limit flag on LBra
41- 46 F6.3 10+7Lsun LBra Luminosity of the Brα emission
48- 52 F5.3 10+7Lsun e_LBra ? Luminosity of the Brα emission
54 A1 --- l_tau3.1 Limit flag on tau3.1
55- 59 F5.3 --- tau3.1 Optical depth τ3.1 of the 3.1um H2O
absorption feature
61 A1 --- l_EW3.3 Limit flag on EW3.3
62- 66 F5.1 nm EW3.3 Rest-frame equivalent width of the
PAH3.3um emission
68- 72 F5.2 --- Gamma Power-law index Γ representing the
slope of continuum emission
74- 78 A5 --- SpT Near-IR type based on the PAH 3.3um emission
detection and Γ (2)
80- 83 F4.1 K Tdust Dust temperature (3)
86- 90 F5.3 10+7Msun Ldust Dust luminosity (3)
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Note (2): the types are:
SF = star-forming galaxy
AGN = Active Galaxy Nucleux diminated galaxy
Comp. = composite, a galaxy which shows both star-forming and AGN activities.
Note (3): Dust temperature and mass obtained by the ratio of IRAS 60 to 100um
fluxes with an emissivity power-law index β~=1.
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Global notes:
Note (G1): IR (8-1000um) luminosity calculated from the IRAS 12, 25, 60, and
100um bands Sanders & Mirable (1996ARA&A..34..749S 1996ARA&A..34..749S). The fluxes are from the
IRAS Faint Source Catalog (Moshir et al., 1992, Cat. II/275).
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History:
* 14-Apr-2014: From electronic version of the journal
* 08-Jan-2018: For J1255542+633641 in table1, 2MASS position corrected
* 12-Jan-2018: For J0053562-703804 in table1, 2MASS position corrected
For J0033298-564449 in table2, 2MASS position corrected
(End) Patricia Vannier [CDS] 07-Mar-2014