J/MNRAS/524/4923 NIR spectral atlas of early-type galaxies (Durre+, 2023)
Infrared spectroscopy of nearby radio active early-type galaxies.
II: Spectral atlas.
Durre M., Mould J., Brown M., Reynolds T.
<Mon. Not. R. Astron. Soc. 524, 4923-4938 (2023)>
=2023MNRAS.524.4923D 2023MNRAS.524.4923D (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, spectra ; Galaxies, IR ; Galaxy catalogs
Keywords: galaxies: elliptical and lenticular, cD - infrared: general -
radio continuum: galaxies - galaxies: active - galaxies: nuclei
Abstract:
We present a near infrared spectroscopic atlas of nearby, bright
early-type galaxies with radio emission, containing 163 galaxies
observed by the Palomar 200" TripleSpec instrument, measuring the
emission line fluxes for H, He, [FeII] and H2 and determined the
nuclear excitation mechanisms. By stacking spectra, we deduced the
H2 excitation temperature (1957±182K) and dominant excitation
mechanism (thermal and shock heating combined) from the K-band
emission line sequence. Stacking also produces an 'average'
spectrum of absorption features and spectral indices from the
literature; the CO12 absorption line index vs. J-K colour shows a
trend of stronger nuclear activity producing a weaker CO12 index and a
redder (flatter) continuum. The correlations between the radio and the
emission-line luminosities finds a trend with radio power; however,
the large scatter in the upper limits shows that the two are not
directly coupled and the duty cycles of SF and AGN activity are not
synchronised.
Description:
The B11 catalogue (Brown et al., 2011ApJ...731L..41B 2011ApJ...731L..41B, Cat.
J/ApJ/731/L41) was extended in a follow-up survey to galaxies with
morphological T types ≥ 0 (i.e. Hubble types S0/a and S), increasing
the total to 514 objects. This extended list was used as the basis for
the M12 observations (Mould et al., 2012ApJS..203...14M 2012ApJS..203...14M). This was
supplemented by inclusion of objects that were observed using
TripleSpec as targets of opportunity, but were not included in the
previous lists. In total, there are 546 objects in the complete
catalogue (396 in B11, 118 in the extended survey, and 32 TripleSpec
supplementary objects). We publish the complete radio survey in this
work .
Eight observing runs were conducted with the Triplespec instrument
subsequent to the data published in M12, making a total of 11 runs.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 80 163 Observation log
table3.dat 88 84 Emission line fluxes
table7.dat 168 546 Radio catalog
table8.dat 62 17 Optical and IR Surveys references
for radio catalog
list.dat 100 163 List of fits spectra
fits/* . 163 Individual fits spectra
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See also:
J/ApJ/731/L41 : 1.4GHz observations of bright early-type galaxies (Brown+ 2011)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 23 A23 --- Name Galaxy Name
25- 32 F8.4 deg RAdeg Right ascension (J2000)
34- 41 F8.4 deg DEdeg Declination (J2000)
43- 45 F3.1 --- Obs.Cycles Observation Cycles
47- 51 F5.3 --- Airmass Airmass
53- 62 A10 "date" Obs.Date Observation Date (YYYY-MM-DD)
64- 74 A11 --- StdStar Standard Star ID
76- 80 F5.1 --- SN Spectrum signal to noise estimate
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 23 A23 --- Name Galaxy Name
25- 30 F6.1 10-17W/m2 FHeI ? Flux He I (10-14erg/cm2/s)
32- 36 F5.1 10-17W/m2 e_FHeI ? Flux uncertainty He I (10-14erg/cm2/s)
38- 43 F6.1 10-17W/m2 FFeII ? Flux [Fe II] (10-14erg/cm2/s)
45- 48 F4.1 10-17W/m2 e_FFeII ? Flux uncertainty [Fe II]
(10-14erg/cm2/s)
50- 55 F6.1 10-17W/m2 FPab ? Flux Pa beta (10-14erg/cm2/s)
57- 61 F5.1 10-17W/m2 e_FPab ? Flux uncertainty Pa beta
(10-14erg/cm2/s)
63- 67 F5.1 10-17W/m2 FH2 ? Flux H_2 (10-14erg/cm2/s)
69- 72 F4.1 10-17W/m2 e_FH2 ? Flux uncertainty H_2 (10-14erg/cm2/s)
74- 78 F5.1 10-17W/m2 FBrg ? Flux Br gamma (10-14erg/cm2/s)
80- 83 F4.1 10-17W/m2 e_FBrg ? Flux uncertainty Br gamma
(10-14erg/cm2/s)
85- 88 F4.1 mag E(B-V) ? B-V relative extinction
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 23 A23 --- Name Galaxy Name
25- 36 A12 --- AltID Galaxy Alternate ID
38 I1 --- Catalog [1/3] Catalog source (1)
40- 47 F8.4 deg RAdeg Right ascension (J2000)
49- 56 F8.4 deg DEdeg Declination (J2000)
58- 65 F8.5 --- z Redshift
67- 71 F5.2 mag Kmag ? Relative K magnitude
73- 78 F6.2 mag KMAG ? Absolute K magnitude
80- 84 F5.1 Mpc DH Hubble distance
86 A1 --- f_DH [C] Hubble distance from COSMICFLOWS-3,
otherwise from object redshift
88- 92 F5.1 Mpc DL Luminosity distance
94- 98 F5.1 km/s sigma ?Stellar velocity dispersion
100 A1 --- f_sigma Velocity dispersion source,
[S] - SDSS spectra, otherwise Hyperleda
102-105 F4.1 --- TType Morphological type
107-111 A5 --- Activity Nuclear activity
113 A1 --- f_Activity [*] nuclear activity type remeasured from
NED spectra
115-119 F5.2 [Msun] logMBH ? Log mass SMBH
121 A1 --- f_logMBH [K] logMBH computed from KMAG,
otherwise from velocity dispersion
123-130 F8.1 mJy FRad ? Radio flux at 20cm
132-138 F7.1 mJy e_FRad ? Radio flux uncertainty at 20cm
140 A1 --- f_FRad [AFPSW] PRadio flux source (2)
142 A1 --- l_logPRad Radio power lower limit flag
144-148 F5.2 [W/Hz] logPRad ? Log radio power
150 A1 --- Spectrum [*] IR spectrum observed with Triplespec
152-168 A17 --- Surveys Surveys containing object,
references in table8
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Note (1): Catalog as follows:
1 = from Brown et al., 2011ApJ...731L..41B 2011ApJ...731L..41B, Cat. J/ApJ/731/L41
2 = extended
3 = supplementary observed with TripleSpec
Note (2): Value from NVSS, otherwise as follows:
A = Arecibo
F = VLA First
P = Parkes
S = SUMSS
W = Whiteoak
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Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Survey [1/17] ID for Surveys column, table7
4- 17 A14 --- SurveyName Survey name
19- 21 I3 ct SurveyCount Count of galaxies in survey in table7
23- 62 A40 --- SurveyBibCode BibCode references
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Right Ascension of center (J2000)
4- 5 I2 min RAm Right Ascension of center (J2000)
7- 11 F5.2 s RAs Right Ascension of center (J2000)
13 A1 --- DE- Declinayion sign of center (J2000)
14- 15 I2 deg DEd Declinayion of center (J2000)
17- 18 I2 arcmin DEm Declinayion of center (J2000)
20- 23 F4.1 arcsec DEs Declinayion of center (J2000)
25- 28 I4 nm bWAVE Lower value of wavelength interval
30- 33 I4 nm BWAVE Upper value of wavelength interval
35- 40 F6.1 nm dWAVE Wavelength resolution
42- 44 F3.1 --- Nz Number of pixels along Z-axis
46- 47 I2 Kibyte size Size of FITS file
49- 76 A28 --- FileName Name of FITS file, in subdirectory fits
78-100 A23 --- Name Galaxy Name
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Acknowledgements:
Mark Durre, mdurre(at)swin.edu.au
(End) Patricia Vannier [CDS] 18-Jul-2023