J/ApJS/273/21 The Plane Quasar Survey: DR1 (Werk+, 2024)
The Plane Quasar Survey: first Data Release.
Werk J., Tchernyshyov K., Bish H., Zheng Y., Putman M., Peek J.,
Schiminovich D.
<Astrophys. J. Suppl. Ser., 273, 21 (2024)>
=2024ApJS..273...21W 2024ApJS..273...21W
ADC_Keywords: Active gal. nuclei; QSOs; Ultraviolet; Spectra, optical;
Redshifts; Colors; Infrared
Keywords: Quasars ; Active galactic nuclei ; Milky Way Galaxy ;
Quasar absorption line spectroscopy ; Circumgalactic medium ;
Spectroscopy
Abstract:
We present a sample of 305 QSO candidates having |b|<30°, the
majority with GALEX magnitudes near-UV<18.75. To generate this sample,
we apply UV-IR color selection criteria to photometric data from the
Ultraviolet Galactic Plane Survey as part of GALEX-CAUSE, the Million
Quasars Catalog, Gaia DR2, and Pan-STARRS DR1. 165 of these
305 candidate UV-bright active galactic nuclei (AGN; 54%) have
published spectroscopic redshifts from 45 different surveys,
confirming them as AGN. We further obtained low-dispersion, optical,
long-slit spectra with the Apache Point Observatory 3.5m, MDM 2.4m,
and MDM 1.3m telescopes for 84 of the candidates, and confirm 86%
(N=72) as AGN, generally with z<0.6. Of these 72 confirmed AGN, 25 are
newly discovered low-latitude QSOs without any previous spectroscopy.
These sources fill a gap in the Galactic latitude coverage of the
available samples of known UV-bright QSO background probes. Along with
a description of the confirmed QSO properties, we provide the fully
reduced, flux- and wavelength-calibrated spectra of 72 low-latitude
QSOs through the Mikulski Archive for Space Telescopes. Future Hubble
Space Telescope/Cosmic Origins Spectrograph spectroscopy of these
low-Galactic-latitude QSOs has the potential to transform our view of
the Milky Way and Local Group circumgalactic medium.
Description:
Our Plane Quasar Survey (PQS) provides a sample of
305 low-Galactic-latitude, UV-bright QSO candidates. In this paper, we
confirm >60% of these candidates as active galactic nuclei (AGN) and
provide redshift estimates.
In total, we obtained spectra of 84 plane QSO candidates during the
2020 calendar year. For the majority of the candidates we observed, we
obtained low-dispersion, long-slit optical spectra using the Apache
Point Observatory (APO) 3.5m telescope with the Dual Imaging
Spectrograph (DIS) and the MDM 2.4m telescope with the Ohio State
Multi-Object Spectrograph (OSMOS). For six candidates, we obtained
spectra on the MDM 1.3m telescope using the Boller and Chivens CCD
Spectrograph (CCDS). Given the range of instruments employed, and the
diversity of targets, the resultant spectra are of varying quality.
The S/N ranges from 3 to 100. We note that every target we observed
has a spectrum of sufficient quality to determine a source type (e.g.,
star or AGN), as well as a redshift if the target was an AGN.
APO (central wavelength of 4620Å) data were taken over the course
of four gray-time half-nights in 2020 February, October, and December.
Each candidate was observed with a 600s exposure time.
MDM 2.4m spectra were obtained with OSMOS from 2020 November to
December; wavelength coverages of 3900-6800Å (inner) and
3100-5950Å (center). Three of our targets were observed remotely on
the 1.3m with CCDS in 2020 February and March.
See Section 3.
All of our spectra and tables are available via MAST as a High Level
Science Product via doi:10.17909/86my-mr86
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 116 305 Plane QSO candidates
table2.dat 168 82 Plane QSO candidate spectroscopic redshifts
sp/* . 82 *Individual 1D spectra in FITS format
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Note on sp/*: The 1D reduced, wavelength and flux-calibrated spectra are
provided for each PQS target we observed with the APO 3.5-m, the MDM
2.4-m, or the MDM 1.3-m. All wavelengths are corrected to a vacuum,
heliocentric rest frame.
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See also:
II/249 : WHAM Northern Sky Survey, V-1.1 (Haffner+, 2003)
VII/259 : 6dF galaxy survey final redshift release (Jones+, 2009)
II/328 : AllWISE Data Release (Cutri+ 2013)
II/335 : Revised cat. of GALEX UV sources (GUVcat_AIS GR6+7) (Bianchi+ 2017)
III/284 : APOGEE-2 data from DR16 (Johnsson+, 2020)
V/154 : Sloan Digital Sky Surveys (SDSS), Release 16 (DR16) (Ahumada+, 2020)
VII/289 : SDSS quasar catalog, sixteenth data release (DR16Q) (Lyke+, 2020)
VII/294 : The Million Quasars (Milliquas) catalogue, version 8 (Flesch, 2023)
J/A+AS/110/469 : AGN from the RASS (Bade+, 1995)
J/A+A/300/323 : NOT GL survey of multiply imaged quasars (Jaunsen+, 1995)
J/A+AS/134/483 : The Hamburg Quasar Survey. III. (Hagen+ 1999)
J/A+AS/139/575 : RASS AGN sample (Wei+, 1999)
J/ApJS/129/547 : RBSC-NVSS sample. I. (Bauer+, 2000)
J/ApJ/543/552 : z>3 damped Lya absorption systems (Storrie-Lombardi+, 2000)
J/AJ/121/2843 : QSOs in 2MASS 2nd incremental DR (Barkhouse+, 2001)
J/ApJ/617/192 : ROSAT AGN Catalog in North Ecliptic Pole (Mullis+, 2004)
J/AJ/130/381 : Blueshifted [O III] emission (Boroson+, 2005)
J/MNRAS/405/2302 : Improved redshifts for SDSS quasar spectra (Hewett+, 2010)
J/MNRAS/414/500 : Spitzer/IRS ATLAS project source (Hernan-Caballero+, 2011)
J/MNRAS/416/2840 : The 2M++ galaxy redshift catalogue (Lavaux+, 2011)
J/other/NewA/16.503 : 2MASS observation of BL Lac objects II. (Mao+, 2011)
J/ApJ/740/91 : Lya and OVI in galaxies around quasars (Prochaska+, 2011)
J/ApJ/751/52 : AGN cand. from the WISE, 2MASS, RASS (W2R) (Edelson+, 2012)
J/A+A/545/A15 : AMIGA XI. Optical nuclear activity (Sabater+, 2012)
J/MNRAS/430/2464 : The CLASS BL Lac sample (Marcha+, 2013)
J/ApJ/767/14 : MASIV survey III. Optical identifications (Pursimo+, 2013)
J/A+A/561/A67 : Spectra of 75 Swift/BAT optical counterparts (Parisi, 2014)
J/A+A/573/A59 : Gas kinematics in CALIFA survey (Garcia-Lorenzo+, 2015)
J/other/RAA/15.1438 : LAMOST new QSOs in M31 and M33 vicinity (Huo+, 2015)
J/A+A/594/A116 : HI4PI spectra and column density maps (HI4PI team+, 2016)
J/AJ/152/25 : The UV-bright Quasar Survey (UVQS) DR1 (Monroe+, 2016)
J/ApJ/818/113 : HST obs. of QSOs with medium spectra (Neeleman+, 2016)
J/ApJ/831/7 : SDSS-RM project: peak velocities of QSOs (Shen+, 2016)
J/AJ/154/114 : KODIAQ DR2 (O'Meara+, 2017)
J/ApJS/233/3 : VLBA Extragalactic Proper Motion Cat. (Truebenbach+, 2017)
J/MNRAS/478/4513 : GALAH Survey DR2 (Buder+, 2018)
J/AJ/155/189 : LAMOST Quasar Survey: QSO data from DR2&3 (Dong+, 2018)
J/ApJ/861/49 : ALFALFA extragalactic HI source catalog (Haynes+, 2018)
J/ApJ/871/35 : HST/COS spectra of QSOs with SiIV data (Zheng+, 2019)
J/ApJS/254/6 : Finding QSOs behind the Galactic Plane. I. (Fu+, 2021)
J/ApJS/261/32 : Finding GPQs. II. Sp. obs. of |b|<20° QSOs (Fu+, 2022)
http://archive.stsci.edu/hlsp/pqs : The Plane Quasar Survey (PQS) on MAST
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [PQS]
4- 22 A19 --- PQS PQS name (JHHMMSS.ss+DDMMSS.s)
24- 51 A28 --- SName SIMBAD name
53- 60 F8.4 deg GLON Galactic longitude
62- 69 F8.4 deg GLAT [-30/30] Galactic latitude
71- 75 F5.2 mag NUVmag [12.9/20.2] GALEX NUV apparent magnitude
77- 82 F6.3 mag Omag [9.3/21]? Optical apparent magnitude in Band
84- 84 A1 --- Band Optical band (B, V, r or R)
86- 89 F4.2 mag W1-W2 [0/2.1] W1-W2 color index
91- 96 F6.4 --- z [0/1.3]? Spectroscopic redshift
98-116 A19 --- r_z Reference for z (ADS/SIMBAD bibcode)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 --- --- [PQS]
4- 22 A19 --- PQS PQS name (JHHMMSS.ss+DDMMSS.s)
24- 31 F8.4 deg GLON [39/278.2] Galactic longitude
33- 40 F8.4 deg GLAT [-29/30] Galactic latitude
42- 46 F5.2 mag NUVmag [14.67/20.14] GALEX NUV apparent magnitude
48- 55 A8 --- Tel Telescope ("APO-3.5m", "MDM-2.4m" or "MDM-1.3m")
57- 60 A4 --- Type Spectral classification ("AGN": 70 sources or
"Star": 12 sources)
62- 67 F6.4 --- zNarrow [0.027/0.71]? Estimated spectroscopic
redshift (1)
69- 74 F6.4 --- zMARZ [0.0005/1.31]?=0 MARZ spectroscopic redshift (2)
76- 81 F6.4 --- zRef [0.025/1.3]? Previously published
spectroscopic redshift
83-101 A19 --- r_zRef Reference for zRef (ADS/SIMBAD bibcode)
103-168 A66 --- FileName Name of the FITS file in subdirectory "sp";
column added by CDS (3)
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Note (1): Redshift is based on any narrow emission lines present in the
spectrum, typically [OIII]4960,5008.
Note (2): Redshift is based on QSO template fitting by the Manual and
Automated Redshifting Software (Hinton+ 2016A&C....15...61H 2016A&C....15...61H) or MARZ.
Note (3): Each spectrum file is provided with the following file naming
convention:
hlsppqs<instrument><targetname>v11dspec.fits
where:
is the telescope used for observations (APO or MDM)
is the corresponding instrument used (DIS or OSMOS)
<target_name> is the identifier for each target
is the name of the filter used in observations.
See: http://archive.stsci.edu/hlsp/pqs (DOI: 10.17909/86my-mr86)
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History:
From electronic version of the journal for tables 1 and 2
Spectra downloaded at: http://archive.stsci.edu/hlsp/pqs
(doi:10.17909/86my-mr86)
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 28-Nov-2024