Semantic Scholar Open Access 2025

Euclid Quick Data Release (Q1). Euclid spectroscopy of quasars. 1. Identification and redshift determination of 3500 bright quasars

Euclid Collaboration Y. Fu R. Bouwens K. Caputi D. Vergani M. Scialpi +495 lainnya

Abstrak

The slitless spectroscopy mode of the on board the Euclid telescope has enabled efficient spectroscopy of objects within a large field of view. Nevertheless, the relatively low spectral resolution, overlapping spectra, and contamination pose challenges to source classification and redshift determination using the spectra alone. In this work, we present a large and homogeneous sample of bright quasars identified from the Euclid Quick Data Release (Q1), constructed by combining high-purity candidate selections from to wavelengths without telluric lines, which will be pivotal to quasar spectral analysis. We obtained an empirical spectroscopic depth of JE łesssim 21.5 and ̋E łesssim 21.3 at the sensitivity of the Wide Field Survey, beyond which the number of securely identified quasars declines sharply. Accordingly, the sample presented in this paper comprises spectroscopically confirmed quasars brighter than these limits. We analysed morphological parameters from the Visible Camera (VIS) using Sérsic and model-independent (CAS) metrics, and a deep-learning point spread function fraction to track nuclear dominance. The VIS morphologies show a clear redshift dependence: at low redshift (z<0.5), obvious host structures are common and a single Sérsic model fits about half of the sources; at intermediate redshift (0.5<z<2), the nuclear component dominates, with 90% of the Sérsic fits saturating at the upper index limit. In this intermediate redshift regime, f_ nisp nisp and WISE with the new spectroscopic capabilities of Euclid. Through visual inspection of the Euclid spectra of these quasar candidates, we identify approximately 3500 quasars and determine reliable redshifts in the range of 0< z łesssim4.8. Of these, 2686 are new spectroscopic identifications relative to existing public compilations. We generated the first Euclid composite spectrum of quasars covering rest-frame nuv nir nir PSF is available, and we use it as a more reliable compactness measure than the single-Sérsic and CAS parameters to quantify nuclear versus host emission. We also explore the novel Euclid colour space and discuss the role of these quasars in refining active galactic nucleus selection techniques for future Euclid data releases. nir

Topik & Kata Kunci

Physics

Penulis (500)

Euclid Collaboration Y. Fu

R. Bouwens

K. Caputi

D. Vergani

M. Scialpi

B. Margalef-Bentabol

L. Wang

M. Bolzonella

M. Banerji

E. Banados

A. Feltre

Y. Toba

J. Calhau

F. Tarsitano

P. Cunha

A. Humphrey

G. Vietri

F. Mannucci

S. Bisogni

F. Ricci

H. Landt

L. Spinoglio

T. M. Zatarain

D. Stern

M. Page

D. Alexander

G. Zamorani

W. Roster

M. Salvato

Y. Copin

J. Sorce

D. Scott

Y. Zhang

E. Lusso

J. Wolf

D. Yang

H. Rottgering

B. Laloux

M. Siudek

S. Belladitta

Q. Liu

V. Allevato

S. Andreon

N. Auricchio

C. Baccigalupi

M. Baldi

A. Balestra

S. Bardelli

P. Battaglia

A. Biviano

E. Branchini

M. Brescia

J. Brinchmann

S. Camera

G. Cañas-Herrera

V. Capobianco

C. Carbone

J. Carretero

S. Casas

M. Castellano

G. Castignani

S. Cavuoti

K. Chambers

A. Cimatti

C. Colodro-Conde

G. Congedo

C. Conselice

L. Conversi

A. Costille

F. Courbin

H. Courtois

M. Cropper

A. Silva

H. Degaudenzi

G. D. Lucia

C. Dolding

H. Dole

F. Dubath

C. Duncan

X. Dupac

S. Dusini

S. Escoffier

M. Fabricius

M. Farina

R. Farinelli

S. Ferriol

F. Finelli

P. Fosalba

N. Fourmanoit

M. Frailis

E. Franceschi

P. Franzetti

M. Fumana

S. Galeotta

K. George

W. Gillard

B. Gillis

C. Giocoli

J. Graciá-Carpio

A. Grazian

F. Grupp

L. Guzzo

S. Haugan

H. Hoekstra

W. Holmes

I. Hook

F. Hormuth

A. Hornstrup

K. Jahnke

M. Jhabvala

B. Joachimi

E. Keihanen

S. Kermiche

A. Kiessling

B. Kubik

M. Kummel

M. Kunz

H. Kurki-Suonio

R. Laureijs

A. Brun

S. Ligori

P. Lilje

V. Lindholm

I. Lloro

G. Mainetti

D. Maino

E. Maiorano

O. Mansutti

S. Marcin

O. Marggraf

K. Markovič

M. Martinelli

N. Martinet

F. Marulli

R. Massey

E. Medinaceli

S. Mei

M. Melchior

Y. Mellier

M. Meneghetti

E. Merlin

G. Meylan

A. Mora

M. Moresco

L. Moscardini

R. Nakajima

C. Neissner

R. Nichol

S. Niemi

C. Padilla

S. Paltani

F. Pasian

K. Pedersen

W. Percival

V. Pettorino

S. Pires

G. Polenta

M. Poncet

L. Popa

L. Pozzetti

F. Raison

R. Rebolo

A. Renzi

J. Rhodes

G. Riccio

E. Romelli

M. Roncarelli

E. Rossetti

R. Saglia

Z. Sakr

D. Sapone

B. Sartoris

M. Schirmer

P. Schneider

T. Schrabback

M. Scodeggio

A. Secroun

E. Sefusatti

G. Seidel

S. Serrano

P. Simon

C. Sirignano

G. Sirri

L. Stanco

J. Starck

J. Steinwagner

C. Surace

P. Tallada-Cresp'i

D. Tavagnacco

A. Taylor

H. Teplitz

I. Tereno

N. Tessore

S. Toft

R. Toledo-Moreo

F. Torradeflot

I. Tutusaus

L. Valenziano

J. Valiviita

T. Vassallo

A. Veropalumbo

D. Vibert

Y. Wang

J. Weller

A. Zacchei

E. Zucca

M. Ballardini

E. Bozzo

C. Burigana

R. Cabanac

M. Calabrese

A. Cappi

D. D. Ferdinando

J. Vigo

L. Gabarra

W. Hartley

M. Huertas-Company

J. Mart'in-Fleitas

S. Matthew

N. Mauri

R. B. Metcalf

A. Nucita

A. Pezzotta

M. Pontinen

C. Porciani

I. Risso

V. Scottez

M. Sereno

M. Tenti

M. Viel

M. Wiesmann

Y. Akrami

S. Alvi

I. Andika

S. Anselmi

M. Archidiacono

F. Atrio-Barandela

É. Aubourg

D. Bertacca

M. Bethermin

L. Bisigello

A. Blanchard

L. Blot

M. Bonici

S. Borgani

M. L. Brown

S. Bruton

A. Calabrò

B. Quevedo

F. Caro

C. Carvalho

T. Castro

F. Cogato

S. Conseil

A. Cooray

O. Cucciati

G. Daste

F. Paolis

G. Desprez

A. D'iaz-S'anchez

J. Diaz

S. Domizio

J. M. Diego

P. Dimauro

P. Duc

M. Y. Elkhashab

A. Enia

Y. Fang

A. Ferrari

A. Finoguenov

F. Fontanot

A. Franco

K. Ganga

J. Garc'ia-Bellido

T. Gasparetto

V. Gautard

E. Gaztañaga

F. Giacomini

F. Gianotti

G. Gozaliasl

M. Gray

M. Guidi

C. M. Gutiérrez

A. Hall

C. Hern'andez-Monteagudo

H. Hildebrandt

J. Hjorth

J. Kajava

Y. Kang

Vanshika Kansal

D. Karagiannis

K. Kiiveri

J. Kim

C. Kirkpatrick

S. Kruk

V. Brun

J. L. Graet

L. Legrand

M. Lembo

F. Lepori

G. Leroy

G. Lesci

J. Lesgourgues

T. Liaudat

A. Loureiro

J. Macías-Pérez

M. Magliocchetti

C. Mancini

R. Maoli

C. Martins

L. Maurin

M. Miluzio

P. Monaco

C. Moretti

G. Morgante

S. Nadathur

K. Naidoo

P. Natoli

A. Navarro-Alsina

S. Nesseris

D. Paoletti

F. Passalacqua

K. Paterson

L. Patrizii

A. Pisani

D. Potter

S. Quai

M. Radovich

P. Rocci

G. Rodighiero

S. Sacquegna

M. Sahl'en

D. Sanders

E. Sarpa

C. Scarlata

A. Schneider

D. Sciotti

E. Sellentin

F. Shankar

L. Smith

E. Soubrié

K. Tanidis

C. Tao

G. Testera

R. Teyssier

S. Tosi

A. Troja

M. Tucci

C. Valieri

A. Venhola

G. Verza

P. Vielzeuf

A. Viitanen

N. A. Walton

J. R. W. L. Observatory

Leiden University

55 Einsteinweg

2333 CC Leiden

The Netherlands.

K. Institute

U. Groningen

PO Box 800

9700 AV Groningen

Cosmic Dawn Center

I. Bologna

V. G. 933

40129 Bologna

Italy

D. Astronomia

U. Firenze

1. viaG.Sansone

50019 Sesto Fiorentino

Firenze

U. Trento

14 ViaSommarive

Infn Trento

Inaf - Arcetri

5. LargoE.Fermi

50125

Sron Netherlands Institute for Space Research

12 Landleven

AD 9747

Groningen

School of Physics Astronomy

U. Southampton

Highfields Campus

S. 1BJ

M. Astronomie

17 Konigstuhl

69117 Heidelberg

Germany

D. Sciences

R. University

Kusatsu

Shiga 525-8577

Japan.

A. S. I. O. Astronomy

Astrophysics

11F of Asmab

1. No.

4. Section

Roosevelt Road

Taipei 10617

Taiwan

I. -. Capodimonte

16 viaMoiariello

80131 Napoli

D. O. Astronomy

U. Geneva

16 ch.d'Ecogia

1290 Versoix

Switzerland.

I. F. Physics

D. Physics

E. Zurich

27 Wolfgang-Pauli-Strasse

8093 Zurich

U. Bologna

V. G. 932

F. Porto

Rua do Campo Alegre

4169-007 Porto

Portugal

I. D. A. E. C. D. Espacco

U. Porto

Caup

Rua das Estrelas

P. Porto

DTx -- Digital Transformation CoLAB

1. Building

Azur'em Campus

U. Minho

4800-058 Guimaraes

Inaf-Iasf Milano

12 ViaAlfonsoCorti

20133 Milano

D. Mathematics

Physics

Roma Tre University

84 viadellaVascaNavale

00133 Rome

Inafiasf Roma

33 viaFrascati

00078 Monte Porzio Catone

D. Physics

C. F. Astronomy

D. University

South Road

Durham

DH1 3LE

I. D. A. E. P. Spaziali

V. Cavaliere

100

00133 Roma

S. O. Physics

H. P. Laboratory

U. Bristol

Tyndall Avenue

Bristol

BS8 1TL

Jet propulsion Laboratory

C. I. O. Technology.

4800 Oak Grove Drive

Pasadena

91109

Usa

Mullard Space Science Laboratory

U. London

Holmbury St. Mary

Dorking

Surrey RH5 6NT

M. F. P. Physics

1. Giessenbachstr.

85748 Garching

1. Universit'eClaudeBernardLyon

CNRSIN2p3

I. Lyon

Umr 5822

Villeurbanne

F-69100

France

U. Lille

Cnrs

Centrale Lille

U. 9. CRIStAL

59000 Lille

Universit'e Paris-Saclay

I. D. Spatiale

91405

Orsay

Astronomy

U. Columbia

Vancouver

BC V6T 1Z1

Canada

Institute for Astronomy

U. Edinburgh

R. Observatory

Format Sitasi

APA MLA BibTeX

Fu, E.C.Y., Bouwens, R., Caputi, K., Vergani, D., Scialpi, M., Margalef-Bentabol, B. et al. (2025). Euclid Quick Data Release (Q1). Euclid spectroscopy of quasars. 1. Identification and redshift determination of 3500 bright quasars. https://doi.org/10.1051/0004-6361/202558490

@article{fu2025, author = {Euclid Collaboration Y. Fu and R. Bouwens and K. Caputi and D. Vergani and M. Scialpi and B. Margalef-Bentabol and L. Wang and M. Bolzonella and M. Banerji and E. Banados and A. Feltre and Y. Toba and J. Calhau and F. Tarsitano and P. Cunha and A. Humphrey and G. Vietri and F. Mannucci and S. Bisogni and F. Ricci and H. Landt and L. Spinoglio and T. M. Zatarain and D. Stern and M. Page and D. Alexander and G. Zamorani and W. Roster and M. Salvato and Y. Copin and J. Sorce and D. Scott and Y. Zhang and E. Lusso and J. Wolf and D. Yang and H. Rottgering and B. Laloux and M. Siudek and S. Belladitta and Q. Liu and V. Allevato and S. Andreon and N. Auricchio and C. Baccigalupi and M. Baldi and A. Balestra and S. Bardelli and P. Battaglia and A. Biviano and E. Branchini and M. Brescia and J. Brinchmann and S. Camera and G. Cañas-Herrera and V. Capobianco and C. Carbone and J. Carretero and S. Casas and M. Castellano and G. Castignani and S. Cavuoti and K. Chambers and A. Cimatti and C. Colodro-Conde and G. Congedo and C. Conselice and L. Conversi and A. Costille and F. Courbin and H. Courtois and M. Cropper and A. Silva and H. Degaudenzi and G. D. Lucia and C. Dolding and H. Dole and F. Dubath and C. Duncan and X. Dupac and S. Dusini and S. Escoffier and M. Fabricius and M. Farina and R. Farinelli and S. Ferriol and F. Finelli and P. Fosalba and N. Fourmanoit and M. Frailis and E. Franceschi and P. Franzetti and M. Fumana and S. Galeotta and K. George and W. Gillard and B. Gillis and C. Giocoli and J. Graciá-Carpio and A. Grazian and F. Grupp and L. Guzzo and S. Haugan and H. Hoekstra and W. Holmes and I. Hook and F. Hormuth and A. Hornstrup and K. Jahnke and M. Jhabvala and B. Joachimi and E. Keihanen and S. Kermiche and A. Kiessling and B. Kubik and M. Kummel and M. Kunz and H. Kurki-Suonio and R. Laureijs and A. Brun and S. Ligori and P. Lilje and V. Lindholm and I. Lloro and G. Mainetti and D. Maino and E. Maiorano and O. Mansutti and S. Marcin and O. Marggraf and K. Markovič and M. Martinelli and N. Martinet and F. Marulli and R. Massey and E. Medinaceli and S. Mei and M. Melchior and Y. Mellier and M. Meneghetti and E. Merlin and G. Meylan and A. Mora and M. Moresco and L. Moscardini and R. Nakajima and C. Neissner and R. Nichol and S. Niemi and C. Padilla and S. Paltani and F. Pasian and K. Pedersen and W. Percival and V. Pettorino and S. Pires and G. Polenta and M. Poncet and L. Popa and L. Pozzetti and F. Raison and R. Rebolo and A. Renzi and J. Rhodes and G. Riccio and E. Romelli and M. Roncarelli and E. Rossetti and R. Saglia and Z. Sakr and D. Sapone and B. Sartoris and M. Schirmer and P. Schneider and T. Schrabback and M. Scodeggio and A. Secroun and E. Sefusatti and G. Seidel and S. Serrano and P. Simon and C. Sirignano and G. Sirri and L. Stanco and J. Starck and J. Steinwagner and C. Surace and P. Tallada-Cresp'i and D. Tavagnacco and A. Taylor and H. Teplitz and I. Tereno and N. Tessore and S. Toft and R. Toledo-Moreo and F. Torradeflot and I. Tutusaus and L. Valenziano and J. Valiviita and T. Vassallo and A. Veropalumbo and D. Vibert and Y. Wang and J. Weller and A. Zacchei and E. Zucca and M. Ballardini and E. Bozzo and C. Burigana and R. Cabanac and M. Calabrese and A. Cappi and D. D. Ferdinando and J. Vigo and L. Gabarra and W. Hartley and M. Huertas-Company and J. Mart'in-Fleitas and S. Matthew and N. Mauri and R. B. Metcalf and A. Nucita and A. Pezzotta and M. Pontinen and C. Porciani and I. Risso and V. Scottez and M. Sereno and M. Tenti and M. Viel and M. Wiesmann and Y. Akrami and S. Alvi and I. Andika and S. Anselmi and M. Archidiacono and F. Atrio-Barandela and É. Aubourg and D. Bertacca and M. Bethermin and L. Bisigello and A. Blanchard and L. Blot and M. Bonici and S. Borgani and M. L. Brown and S. Bruton and A. Calabrò and B. Quevedo and F. Caro and C. Carvalho and T. Castro and F. Cogato and S. Conseil and A. Cooray and O. Cucciati and G. Daste and F. Paolis and G. Desprez and A. D'iaz-S'anchez and J. Diaz and S. Domizio and J. M. Diego and P. Dimauro and P. Duc and M. Y. Elkhashab and A. Enia and Y. Fang and A. Ferrari and A. Finoguenov and F. Fontanot and A. Franco and K. Ganga and J. Garc'ia-Bellido and T. Gasparetto and V. Gautard and E. Gaztañaga and F. Giacomini and F. Gianotti and G. Gozaliasl and M. Gray and M. Guidi and C. M. Gutiérrez and A. Hall and C. Hern'andez-Monteagudo and H. Hildebrandt and J. Hjorth and J. Kajava and Y. Kang and Vanshika Kansal and D. Karagiannis and K. Kiiveri and J. Kim and C. Kirkpatrick and S. Kruk and V. Brun and J. L. Graet and L. Legrand and M. Lembo and F. Lepori and G. Leroy and G. Lesci and J. Lesgourgues and T. Liaudat and A. Loureiro and J. Macías-Pérez and M. Magliocchetti and C. Mancini and R. Maoli and C. Martins and L. Maurin and M. Miluzio and P. Monaco and C. Moretti and G. Morgante and S. Nadathur and K. Naidoo and P. Natoli and A. Navarro-Alsina and S. Nesseris and D. Paoletti and F. Passalacqua and K. Paterson and L. Patrizii and A. Pisani and D. Potter and S. Quai and M. Radovich and P. Rocci and G. Rodighiero and S. Sacquegna and M. Sahl'en and D. Sanders and E. Sarpa and C. Scarlata and A. Schneider and D. Sciotti and E. Sellentin and F. Shankar and L. Smith and E. Soubrié and K. Tanidis and C. Tao and G. Testera and R. Teyssier and S. Tosi and A. Troja and M. Tucci and C. Valieri and A. Venhola and G. Verza and P. Vielzeuf and A. Viitanen and N. A. Walton and J. R. W. L. Observatory and Leiden University and 55 Einsteinweg and 2333 CC Leiden and The Netherlands. and K. Institute and U. Groningen and PO Box 800 and 9700 AV Groningen and Cosmic Dawn Center and I. Bologna and V. G. 933 and 40129 Bologna and Italy and D. Astronomia and U. Firenze and 1. viaG.Sansone and 50019 Sesto Fiorentino and Firenze and U. Trento and 14 ViaSommarive and Infn Trento and Inaf - Arcetri and 5. LargoE.Fermi and 50125 and Sron Netherlands Institute for Space Research and 12 Landleven and AD 9747 and Groningen and School of Physics Astronomy and U. Southampton and Highfields Campus and S. 1BJ and Uk and M. Astronomie and 17 Konigstuhl and 69117 Heidelberg and Germany and D. Sciences and R. University and Kusatsu and Shiga 525-8577 and Japan. and A. S. I. O. Astronomy and Astrophysics and 11F of Asmab and 1. No. and 4. Section and Roosevelt Road and Taipei 10617 and Taiwan and I. -. Capodimonte and 16 viaMoiariello and 80131 Napoli and D. O. Astronomy and U. Geneva and 16 ch.d'Ecogia and 1290 Versoix and Switzerland. and I. F. Physics and D. Physics and E. Zurich and 27 Wolfgang-Pauli-Strasse and 8093 Zurich and U. Bologna and V. G. 932 and F. Porto and Rua do Campo Alegre and 4169-007 Porto and Portugal and I. D. A. E. C. D. Espacco and U. Porto and Caup and Rua das Estrelas and P. Porto and DTx -- Digital Transformation CoLAB and 1. Building and Azur'em Campus and U. Minho and 4800-058 Guimaraes and Inaf-Iasf Milano and 12 ViaAlfonsoCorti and 20133 Milano and D. Mathematics and Physics and Roma Tre University and 84 viadellaVascaNavale and 00133 Rome and Inafiasf Roma and 33 viaFrascati and 00078 Monte Porzio Catone and D. Physics and C. F. Astronomy and D. University and South Road and Durham and DH1 3LE and I. D. A. E. P. Spaziali and V. Cavaliere and 100 and 00133 Roma and S. O. Physics and H. P. Laboratory and U. Bristol and Tyndall Avenue and Bristol and BS8 1TL and Jet propulsion Laboratory and C. I. O. Technology. and 4800 Oak Grove Drive and Pasadena and Ca and 91109 and Usa and Mullard Space Science Laboratory and U. London and Holmbury St. Mary and Dorking and Surrey RH5 6NT and M. F. P. Physics and 1. Giessenbachstr. and 85748 Garching and 1. Universit'eClaudeBernardLyon and CNRSIN2p3 and I. Lyon and Umr 5822 and Villeurbanne and F-69100 and France and U. Lille and Cnrs and Centrale Lille and U. 9. CRIStAL and 59000 Lille and Universit'e Paris-Saclay and I. D. Spatiale and 91405 and Orsay and Astronomy and U. Columbia and Vancouver and BC V6T 1Z1 and Canada and Institute for Astronomy and U. Edinburgh and R. Observatory}, title = {Euclid Quick Data Release (Q1). Euclid spectroscopy of quasars. 1. Identification and redshift determination of 3500 bright quasars}, year = {2025}, journal = {Semantic Scholar}, doi = {10.1051/0004-6361/202558490}, url = {https://www.semanticscholar.org/paper/07163fae770a02d5ec01d3865562464864079199}, }

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Tahun Terbit: 2025
Bahasa: en
Sumber Database: Semantic Scholar
DOI: 10.1051/0004-6361/202558490
Akses: Open Access ✓