The OTELO survey I. Description, data reduction, and multi-wavelength catalogue

Angel Bongiovanni; Marina Ramon-Perez; Ana Maria Perez Garcia; Jordi Cepa; Miguel Cervino; Jakub Nadolny; Ricardo Perez Martinez; Emilio Alfaro; Hector O. Castaneda; Jose A. de Diego; Alessandro Ederoclite; Mirian Fernandez-Lorenzo; Jesus Gallego; Jose Jesus Gonzalez; Jose Ignacio Gonzalez-Serrano; Maritza A. Lara-Lopez; Ivan Oteo Gomez; Carmen P. Padilla Torres; Irene Pintos-Castro; Mirjana Povic; Miguel Sanchez-Portal; Heath Jones; Joss Bland-Hawthorn; Antonio Cabrera-Lavers

doi:10.1051/0004-6361/201833294

The OTELO survey I. Description, data reduction, and multi-wavelength catalogue

Angel Bongiovanni, Marina Ramon-Perez, Ana Maria Perez Garcia, Jordi Cepa, Miguel Cervino, Jakub Nadolny, Ricardo Perez Martinez, Emilio Alfaro, Hector O. Castaneda, Jose A. de Diego, Alessandro Ederoclite, Mirian Fernandez-Lorenzo, Jesus Gallego, Jose Jesus Gonzalez, Jose Ignacio Gonzalez-Serrano, Maritza A. Lara-Lopez, Ivan Oteo Gomez, Carmen P. Padilla Torres, Irene Pintos-Castro, Mirjana PovicMiguel Sanchez-Portal, Heath Jones, Joss Bland-Hawthorn, Antonio Cabrera-Lavers

DARK

1 Citation (Scopus)

Abstract

Context. The evolution of galaxies through cosmic time is studied observationally by means of extragalactic surveys. The usefulness of these surveys is greatly improved by increasing the cosmological volume, in either depth or area, and by observing the same targets in different wavelength ranges. A multi-wavelength approach using different observational techniques can compensate for observational biases. Aims. The OTELO survey aims to provide the deepest narrow-band survey to date in terms of minimum detectable flux and emission line equivalent width in order to detect the faintest extragalactic emission line systems. In this way, OTELO data will complements other broad-band, narrow-band, and spectroscopic surveys. Methods. The red tunable filter of the OSIRIS instrument on the 10.4m Gran Telescopio Canarias (GTC) is used to scan a spectral window centred at 9175 Å, which is free from strong sky emission lines, with a sampling interval of 6Å and a bandwidth of 12Å in the most deeply explored EGS region. Careful data reduction using improved techniques for sky ring subtraction, accurate astrometry, photometric calibration, and source extraction enables us to compile the OTELO catalogue. This catalogue is complemented with ancillary data ranging from deep X-ray to far-infrared, including high resolution HST images, which allow us to segregate the different types of targets, derive precise photometric redshifts, and obtain the morphological classification of the extragalactic objects detected. Results. The OTELO multi-wavelength catalogue contains 11 237 entries and is 50% complete at AB magnitude 26.38. Of these sources, 6600 have photometric redshifts with an uncertainty δ z phot better than 0.2 (1+z phot). A total of 4336 of these sources correspond to preliminary emission line candidates, which are complemented by 81 candidate stars and 483 sources that qualify as absorption line systems. The OTELO survey results will be released to the public on the second half of 2019.

Original language	English
Article number	A9
Journal	Astronomy & Astrophysics
Volume	631
Number of pages	28
ISSN	0004-6361
DOIs	https://doi.org/10.1051/0004-6361/201833294
Publication status	Published - 1 Nov 2019

Keywords

techniques: imaging spectroscopy
surveys
quasars: emission lines
galaxies: statistics

Access to Document

10.1051/0004-6361/201833294

Cite this

Bongiovanni, A., Ramon-Perez, M., Perez Garcia, A. M., Cepa, J., Cervino, M., Nadolny, J., Perez Martinez, R., Alfaro, E., Castaneda, H. O., de Diego, J. A., Ederoclite, A., Fernandez-Lorenzo, M., Gallego, J., Jesus Gonzalez, J., Ignacio Gonzalez-Serrano, J., Lara-Lopez, M. A., Gomez, I. O., Padilla Torres, C. P., Pintos-Castro, I., ... Cabrera-Lavers, A. (2019). The OTELO survey I. Description, data reduction, and multi-wavelength catalogue. Astronomy & Astrophysics, 631, [A9]. https://doi.org/10.1051/0004-6361/201833294

Bongiovanni, A, Ramon-Perez, M, Perez Garcia, AM, Cepa, J, Cervino, M, Nadolny, J, Perez Martinez, R, Alfaro, E, Castaneda, HO, de Diego, JA, Ederoclite, A, Fernandez-Lorenzo, M, Gallego, J, Jesus Gonzalez, J, Ignacio Gonzalez-Serrano, J, Lara-Lopez, MA, Gomez, IO, Padilla Torres, CP, Pintos-Castro, I, Povic, M, Sanchez-Portal, M, Jones, H, Bland-Hawthorn, J & Cabrera-Lavers, A 2019, 'The OTELO survey I. Description, data reduction, and multi-wavelength catalogue', Astronomy & Astrophysics, vol. 631, A9. https://doi.org/10.1051/0004-6361/201833294

@article{8940e6a6e62946f195d38e2d55b0e6c0,

title = "The OTELO survey I. Description, data reduction, and multi-wavelength catalogue",

abstract = "Context. The evolution of galaxies through cosmic time is studied observationally by means of extragalactic surveys. The usefulness of these surveys is greatly improved by increasing the cosmological volume, in either depth or area, and by observing the same targets in different wavelength ranges. A multi-wavelength approach using different observational techniques can compensate for observational biases. Aims. The OTELO survey aims to provide the deepest narrow-band survey to date in terms of minimum detectable flux and emission line equivalent width in order to detect the faintest extragalactic emission line systems. In this way, OTELO data will complements other broad-band, narrow-band, and spectroscopic surveys. Methods. The red tunable filter of the OSIRIS instrument on the 10.4m Gran Telescopio Canarias (GTC) is used to scan a spectral window centred at 9175 {\AA}, which is free from strong sky emission lines, with a sampling interval of 6{\AA} and a bandwidth of 12{\AA} in the most deeply explored EGS region. Careful data reduction using improved techniques for sky ring subtraction, accurate astrometry, photometric calibration, and source extraction enables us to compile the OTELO catalogue. This catalogue is complemented with ancillary data ranging from deep X-ray to far-infrared, including high resolution HST images, which allow us to segregate the different types of targets, derive precise photometric redshifts, and obtain the morphological classification of the extragalactic objects detected. Results. The OTELO multi-wavelength catalogue contains 11 237 entries and is 50% complete at AB magnitude 26.38. Of these sources, 6600 have photometric redshifts with an uncertainty δ z phot better than 0.2 (1+z phot). A total of 4336 of these sources correspond to preliminary emission line candidates, which are complemented by 81 candidate stars and 483 sources that qualify as absorption line systems. The OTELO survey results will be released to the public on the second half of 2019.",

keywords = "techniques: imaging spectroscopy, surveys, quasars: emission lines, galaxies: statistics",

author = "Angel Bongiovanni and Marina Ramon-Perez and {Perez Garcia}, {Ana Maria} and Jordi Cepa and Miguel Cervino and Jakub Nadolny and {Perez Martinez}, Ricardo and Emilio Alfaro and Castaneda, {Hector O.} and {de Diego}, {Jose A.} and Alessandro Ederoclite and Mirian Fernandez-Lorenzo and Jesus Gallego and {Jesus Gonzalez}, Jose and {Ignacio Gonzalez-Serrano}, Jose and Lara-Lopez, {Maritza A.} and Gomez, {Ivan Oteo} and {Padilla Torres}, {Carmen P.} and Irene Pintos-Castro and Mirjana Povic and Miguel Sanchez-Portal and Heath Jones and Joss Bland-Hawthorn and Antonio Cabrera-Lavers",

year = "2019",

month = nov,

day = "1",

doi = "10.1051/0004-6361/201833294",

language = "English",

volume = "631",

journal = "Astronomy and Astrophysics Supplement Series",

issn = "0004-6361",

publisher = "E D P Sciences",

}

TY - JOUR

T1 - The OTELO survey I. Description, data reduction, and multi-wavelength catalogue

AU - Bongiovanni, Angel

AU - Ramon-Perez, Marina

AU - Perez Garcia, Ana Maria

AU - Cepa, Jordi

AU - Cervino, Miguel

AU - Nadolny, Jakub

AU - Perez Martinez, Ricardo

AU - Alfaro, Emilio

AU - Castaneda, Hector O.

AU - de Diego, Jose A.

AU - Ederoclite, Alessandro

AU - Fernandez-Lorenzo, Mirian

AU - Gallego, Jesus

AU - Jesus Gonzalez, Jose

AU - Ignacio Gonzalez-Serrano, Jose

AU - Lara-Lopez, Maritza A.

AU - Gomez, Ivan Oteo

AU - Padilla Torres, Carmen P.

AU - Pintos-Castro, Irene

AU - Povic, Mirjana

AU - Sanchez-Portal, Miguel

AU - Jones, Heath

AU - Bland-Hawthorn, Joss

AU - Cabrera-Lavers, Antonio

PY - 2019/11/1

Y1 - 2019/11/1

N2 - Context. The evolution of galaxies through cosmic time is studied observationally by means of extragalactic surveys. The usefulness of these surveys is greatly improved by increasing the cosmological volume, in either depth or area, and by observing the same targets in different wavelength ranges. A multi-wavelength approach using different observational techniques can compensate for observational biases. Aims. The OTELO survey aims to provide the deepest narrow-band survey to date in terms of minimum detectable flux and emission line equivalent width in order to detect the faintest extragalactic emission line systems. In this way, OTELO data will complements other broad-band, narrow-band, and spectroscopic surveys. Methods. The red tunable filter of the OSIRIS instrument on the 10.4m Gran Telescopio Canarias (GTC) is used to scan a spectral window centred at 9175 Å, which is free from strong sky emission lines, with a sampling interval of 6Å and a bandwidth of 12Å in the most deeply explored EGS region. Careful data reduction using improved techniques for sky ring subtraction, accurate astrometry, photometric calibration, and source extraction enables us to compile the OTELO catalogue. This catalogue is complemented with ancillary data ranging from deep X-ray to far-infrared, including high resolution HST images, which allow us to segregate the different types of targets, derive precise photometric redshifts, and obtain the morphological classification of the extragalactic objects detected. Results. The OTELO multi-wavelength catalogue contains 11 237 entries and is 50% complete at AB magnitude 26.38. Of these sources, 6600 have photometric redshifts with an uncertainty δ z phot better than 0.2 (1+z phot). A total of 4336 of these sources correspond to preliminary emission line candidates, which are complemented by 81 candidate stars and 483 sources that qualify as absorption line systems. The OTELO survey results will be released to the public on the second half of 2019.

AB - Context. The evolution of galaxies through cosmic time is studied observationally by means of extragalactic surveys. The usefulness of these surveys is greatly improved by increasing the cosmological volume, in either depth or area, and by observing the same targets in different wavelength ranges. A multi-wavelength approach using different observational techniques can compensate for observational biases. Aims. The OTELO survey aims to provide the deepest narrow-band survey to date in terms of minimum detectable flux and emission line equivalent width in order to detect the faintest extragalactic emission line systems. In this way, OTELO data will complements other broad-band, narrow-band, and spectroscopic surveys. Methods. The red tunable filter of the OSIRIS instrument on the 10.4m Gran Telescopio Canarias (GTC) is used to scan a spectral window centred at 9175 Å, which is free from strong sky emission lines, with a sampling interval of 6Å and a bandwidth of 12Å in the most deeply explored EGS region. Careful data reduction using improved techniques for sky ring subtraction, accurate astrometry, photometric calibration, and source extraction enables us to compile the OTELO catalogue. This catalogue is complemented with ancillary data ranging from deep X-ray to far-infrared, including high resolution HST images, which allow us to segregate the different types of targets, derive precise photometric redshifts, and obtain the morphological classification of the extragalactic objects detected. Results. The OTELO multi-wavelength catalogue contains 11 237 entries and is 50% complete at AB magnitude 26.38. Of these sources, 6600 have photometric redshifts with an uncertainty δ z phot better than 0.2 (1+z phot). A total of 4336 of these sources correspond to preliminary emission line candidates, which are complemented by 81 candidate stars and 483 sources that qualify as absorption line systems. The OTELO survey results will be released to the public on the second half of 2019.

KW - techniques: imaging spectroscopy

KW - surveys

KW - quasars: emission lines

KW - galaxies: statistics

U2 - 10.1051/0004-6361/201833294

DO - 10.1051/0004-6361/201833294

M3 - Journal article

SN - 0004-6361

VL - 631

JO - Astronomy and Astrophysics Supplement Series

JF - Astronomy and Astrophysics Supplement Series

M1 - A9

ER -

The OTELO survey I. Description, data reduction, and multi-wavelength catalogue

Abstract

Keywords

Access to Document

Fingerprint

Cite this