J/ApJ/960/119 LBT-MODS long-slit opt. sp. of SDSS-FIRST galaxies (Bhat+, 2024)
Influence of jets on [OIII] extensions in Green Pea/Bean galaxies.
Bhat H.K., Eckart A., Misquitta P., Valencia-S. M., Yttergren M.,
Zensus A.
<Astrophys. J., 960, 119 (2024)>
=2024ApJ...960..119B 2024ApJ...960..119B
ADC_Keywords: Galaxies, radio; Active gal. nuclei; Spectra, optical; Redshifts
Keywords: Extragalactic astronomy ; Emission line galaxies ; Active galaxies
Abstract:
We present a study investigating the influence of jets on galaxies
exhibiting strong [OIII]λ5007 emission, known as Green Peas and
Green Beans. Our sample comprised 12 nearby sources (z∼0.04-0.1, six
with jets and six without jets) with high [OIII] luminosity
(L∼1040erg/s), selected from a radio-selected galaxy sample observed
with the Sloan Digital Sky Survey and Radio Sky at Twenty-centimeters
survey. We perform Large Binocular Telescope-Multi-Object Double
Spectrograph long-slit spectroscopy at two position angles for each
galaxy: one aligned with the jet direction and another perpendicular
to it. By tracing the [OIII] emission along these slits, we aimed to
assess the extension of the narrow line region and examine the impact
of jets. Surprisingly, our analysis revealed no preferred direction
for the extension of the [OIII] emission, indicating that jets have a
limited influence on the extended emission line regions (EELRs). This
also suggests the possibility of missed detection of conical-shaped
EELRs aligned with the jets, attributable to our slit orientations.
Furthermore, we compared the extension of [OII] emission, which traces
star-forming regions, with that of [OIII]. We observed a significant
difference, with [OII] exhibiting a considerably greater extension
along the galactic plane. This suggests a stronger association of
[OII] emission with stellar processes.
Description:
Optical long-slit spectrometry was carried out at the Large Binocular
Telescope (LBT) located at Mt. Graham International Observatory in
Arizona, USA. LBT has a binocular design with two circular 8.4m wide
mirrors, making the combined collecting area equivalent to a single
circular mirror with a diameter of 11.8m. Observations were made from
2019 February 9 to 2022 April 27 using the Multi-Object Double
Spectrograph (MODS) mounted at the direct Gregorian foci of the
mirrors. MODS are a pair of low- to medium-resolution, identical
spectrographs covering the UV to near-IR wavelengths (320-1100nm),
with a field-of-view of 6"x6".
Each source was observed at two perpendicular slit positions, one
along the jet and another perpendicular to it (or along and
perpendicular to the galactic plane in the case of non-jetted sources;
A and B, respectively, in Figure 1). At each position, we took two
exposures, one with the source at the center of the slit and another
with 10" dithering along the slit direction. All the observational
details are provided in Table 2.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 52 12 Radio fluxes and indices
table2.dat 95 14 Observational details
table3.dat 72 213 Central emission lines of all 12 galaxies
sp/* . 12 Individual spectra in JPG format (Figure 3 set images)
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See also:
VIII/92 : The FIRST Survey Catalog, Version 2014Dec17 (Helfand+ 2015)
V/154 : Sloan Digital Sky Surveys (SDSS), Release 16 (DR16) (Ahumada+, 2020)
J/A+A/418/465 : Mid-infrared and hard X-ray emission in AGN (Lutz+, 2004)
J/ApJS/161/185 : GIS catalog project : source catalog II (Ueda+, 2005)
J/AJ/136/2373 : Type 2 quasars from SDSS (Reyes+, 2008)
J/A+A/524/A64 : The 54-month Palermo BAT-survey catalogue (Cusumano+, 2010)
J/ApJS/201/31 : Emission-line galaxies from SDSS. I. (Ge+, 2012)
J/ApJ/788/45 : Luminosity & redshift of gal. from WISE/SDSS (Toba+, 2014)
J/ApJS/219/1 : Catalog of Type-1 AGNs from SDSS-DR7 (Oh+, 2015)
J/A+A/573/A93 : Galaxies opt. emission-line diagnostic diag. (Vitale+, 2015)
J/MNRAS/460/19 : Update of INTEGRAL/IBIS AGN catalogue (Malizia+, 2016)
J/MNRAS/455/2551 : SDSS/3XMM X-ray-selected LINERs (Nisbet+, 2016)
J/AJ/155/188 : Nuclear activity in low-power radio galaxies (Lin+, 2018)
J/MNRAS/480/2302 : Extended emission-line regions of obscured AGN (Sun+, 2018)
J/ApJS/242/4 : Two new catalogs of blazar candidates (D'Abrusco+, 2019)
J/MNRAS/485/2710 : Radio jets associated with galactic outflows (Jarvis+, 2019)
J/A+A/630/A83 : Radio fluxes of SDSS-FIRST sources (Zajacek+, 2019)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Seq Running sequence number; column added by CDS
to match Figure number image
4- 8 A5 --- Name Galaxy name
10- 13 A4 --- OName Other designation
15- 19 F5.3 Jy F1.4 [0.01/3.8] FIRST 1.4GHz flux density
21- 25 F5.3 Jy F4.85 [0.006/1.9] 4.85GHz flux density
27- 31 F5.3 Jy F10.45 [0.008/1.07]? 10.45GHz flux density
33- 38 F6.3 --- a1 [-1.2/2] Spectral index, α1.4/4.85
40- 45 F6.3 --- a2 [-3.7/0.011]? Spectral index, α1.4/10.45
47- 50 F4.2 --- logR [2.03/4.56] log of the radio loudness (R) (1)
52 A1 --- f_logR [l] l: radio-loud galaxies
(log(R)=log(L4.85/LO)>2.4) (1)
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Note (1): Here the radio loudness (R) is defined as L4.85/LO, where
L4.85 is the integrated radio flux density at 4.85GHz and LO is
the flux density in the SDSS r band in jansky. Sources with log(R)>2.4
are considered radio-loud, whereas log(R)≤2.4 is considered radio
quiet (Panessa+ 2007A&A...467..519P 2007A&A...467..519P).
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- Name Galaxy name
7- 10 A4 --- OName Other designation
12- 28 A17 --- PropID Proposal ID
30- 31 I2 h RAh Hour of right ascension (J2000)
33- 34 I2 min RAm Minute of right ascension (J2000)
36- 40 F5.2 s RAs Second of right ascension (J2000)
42 A1 --- DE- Sign of declination (J2000)
43- 44 I2 deg DEd Degree of declination (J2000)
46- 47 I2 arcmin DEm Arcminute of declination (J2000)
49- 53 F5.2 arcsec DEs Arcsecond of declination (J2000)
55- 60 F6.4 --- z [0.04/0.1] Redshift
62- 71 A10 "Y/M/D" Date Date of observation (UT) or
first date of observation for range
73- 82 A10 "Y/M/D" Date2 Last date of observation for range
84- 87 I4 s Exp [3200/6000] Exposure time
89- 91 I3 deg PA-A [9/234] Position angle A
93- 95 I3 deg PA-B [69/326] Position angle B
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- Name Galaxy designation
7- 26 A20 --- Line Emission line
28- 33 A6 --- f_Line Flag for emission line (1)
35- 41 F7.2 0.1nm lambda [3567.45/7891.56] Observed wavelength;
angstroms
43- 46 F4.2 0.1nm e_lambda [0.01/6] Uncertainty in lambda
48- 53 F6.2 10-19W/m2 Flux [0.39/417.5] Derived flux density;
10-16erg/s/cm2
55- 59 F5.2 10-19W/m2 e_Flux [0.03/53] Uncertainty in Flux
61- 66 F6.1 km/s FWHM [13/3129] FWHM of emission line
68- 72 F5.1 km/s e_FWHM [0/608] Uncertainty in FWHM
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Note (1): Flag as follows:
blue = Blue-wing component;
broad = Broad Hβ component;
broad1 = Broad Hα component;
broad2 = Second broad Hα component.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 19-Mar-2026