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J/A+AS/108/61 Warm IRAS source. IV. (Fehmers+, 1994)
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Warm IRAS source from the point source catalog. IV. Extended optical line
emission
Fehmers G.C., de Grijp M.H.K., Miley G.K., Keel W.C.
<Astron. Astrophys. Suppl. Ser. 108, 61 (1994)>
=1994A&AS..108...61F (SIMBAD/NED Reference)
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ADC_Keywords: Infrared sources; Galaxies, Seyfert
Keywords: galaxies: active - galaxies: Seyfert - infrared: galaxies -
galaxies: ISM
Abstract:
We present a list of objects observed to have extended line emission in our
spectroscopic survey of infrared-warm AGN. Slit spectroscopic data were
obtained for 225 galaxies identified with objects in our compendium of
warm sources from the IRAS Point Source Catalog. Of these, 44 have
spatially-resolved emission-line regions along the (arbitrarily placed)
slit direction. Measured (projected) linear sizes of the ionized gas
regions extend to >10kpc. In the case of the IRAS Seyfert galaxies the
spatially extended line emission appears to have a lower ionization state
than the nuclear emission. This contrasts with the warm IRAS starbust
galaxies for which there is no significant difference between the
ionization states of the nuclear and extended emission. For the starburst
galaxies, there is a relation between the extent of star formation as seen
at H{alpha} and the far-IR colors, with more compact bursts having "warmer"
colors.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 24 169 Galaxies with spatially unresolved
line-emission
table1.tex 109 79 LaTeX version of table1
table2 74 90 Galaxies with spatially extended or possibly
extended line-emission
table2a.tex 111 80 LaTeX version of table2 (left part)
table2b.tex 95 79 LaTeX version of table2 (right part)
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Byte-by-byte Description of file: table1
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Bytes Format Units Label Explanations
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1- 3 I3 --- No []? Running number as introduced in the
catalogue of paper I. If the number is
absent, the source does not appear in the
catalogue (see paper)
5- 17 A13 --- IRAS IRAS name
18- 20 I3 deg PA1 []? First slit position angle
22- 24 I3 deg PA2 []? Second slit position angle
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Byte-by-byte Description of file: table2
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Bytes Format Units Label Explanations
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1- 3 I3 --- No []? Running number, see table1
5- 17 A13 --- IRAS IRAS Name
19- 31 A13 --- Name Alternative Name
33- 38 F6.4 --- z Redshift
41- 49 A9 --- AGN AGN spectral type
51- 52 I2 --- o_IRAS Observing night number, see Paper II
55- 57 I3 deg PA []? Slit position angle
60 A1 --- l_Asize limit flag on angular size
61- 64 F4.1 arcsec Asize Angular size of line-emission
67 A1 --- l_Lsize limit flag on linear projected size
68- 71 F4.1 kpc Lsize Linear projected size, H=75 km/s/Mpc
73- 74 I2 --- Notes []? Notes (1)
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Note (1):
1. Possibly extended. Stated size is uncertain.
2. IRAS 0032-617SW. This galaxy has a long tidal arm. The line profile along
the slit has two peaks of emission, but the continuum profile has a
single maximum. The line-emitting regions are about 4" apart and H II-type
3. IRAS 0033-819. A ring-shaped galaxy with two brightness enhancements, 11"
apart, both strong line emitters.
4. IRAS 0141+020 (Markarian 573). The Seyfert-like emission extends out
to 3.4" on either side of the nucleus, including relatively strong [O I].
This emission has been examined by Afanasiev & Sil'chenko (1991) and by
Tsvetanov & Walsh (1992) from kinematic and ionization standpoints.
5. IRAS 0146-615. This galaxy has a long tidal arm. Along the slit, two peaks
of emission are seen, both in line and continuum. The peaks are 8" apart
and both are H II-type.
6. IRAS 0225-103 (Markarian 1039). This galaxy hosts two H II-type
nuclei, 24" apart.
7. IRAS 0229-368 (IC 1816). The Seyfert-like spectrum extends as far as 3.4"
east of the nucleus, including relatively strong [O I]. The nuclear
[O III] lines are spectrally resolved, FWHM=900km/s, whereas the extended
line-emission is narrower, FWHM<500km/s.
8. IRAS 0240-002 (NGC 1068). The nuclear emission lines have a FWHM of
about 1200km/s, whereas the extranuclear emission is unresolved
spectrally, FWHM<200km/s.
9. IRAS 0302-729. The nuclear emission lines are spectrally resolved, with
FWHM=1300km/s, the extended emission lines are unresolved, FWHM<500km/s.
10. IRAS 0310-515. This galaxy has a long tidal arm. The brightness profile
along the slit shows two peaks of emission, 7.4" apart. Both have Seyfert
spectra.
11. IRAS 1703+606. An interacting pair, with a Seyfert and a starburst
galaxy 6.5" apart, at almost the same redshift.
12. IRAS 1855+716. An interacting pair, two starburst galaxies 6.7" apart,
almost same redshift. The line-emission (especially [O II]3727) forms a
bridge between them.
13. IRAS 1908-539. This galaxy has a highly irregular morphology. The emission
line- and continuum-profiles along the slit show double structure, two
peaks separated by 20". One has a Seyfert spectrum and the other is
H II-type.
14. IRAS 2048-572 (PKS 2048-57). This object has a Seyfert-like spectrum
extending by at least 4" on either side of the nucleus, including
relatively strong [O I]. There is a large velocity gradient, the emission
lines 3" east and west of the nucleus being shifted by 230km/s red- and
bluewards respectively, relative to the nucleus.
15. IRAS 2117-492. An interacting pair of starburst galaxies 41" apart,
at almost the same redshift. The line emission in the eastern galaxy is
extended by at least 24".
References:
Afanasiev V.L. & Sil'chenko O.K., 1991, Astrofiz. Issled. 33, 114
Tsvetanov Z. & Walsh J.R., 1992, ApJ 386, 485 =1992ApJ...386..485T
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(End) Patricia Bauer [CDS] 23-Sep-1994