UCSB Astrophysics

§ 01Research · 05 / 06

Cosmic dawn

The first quasars and galaxies, the intergalactic medium, and the epoch of reionization, using the largest sky surveys, JWST, 21 cm cosmology and machine learning emulators.

All research themes

Image: Webb's First Deep Field, SMACS 0723. NASA, ESA, CSA, STScI

§ 02People

Faculty

Each portrait links to a profile page.

§ 03On the sky

On the sky

Objects tied to this theme's research, placed on the sky over Broida Hall. Positions are computed in your browser.

Positions are computed in the browser and need JavaScript.

NSEW

Zenith at the center, horizon at the rim, rings at 30° and 60° altitude. North up, east left, as seen looking up. Stars to magnitude 4.5.

  1. Quasar

    QSO J0305-3150

    RA 03h 05.3m · Dec −31° 51′

    z = 6.61

    Altitude
    –
    Azimuth
    –
    Rises
    –
    Joseph Hennawi

  2. Quasar

    QSO J1007+2115

    RA 10h 08.0m · Dec +21° 15′

    z = 7.51

    Altitude
    –
    Azimuth
    –
    Rises
    –
    Joseph Hennawi

  3. Quasar

    ULAS J1342+0928

    RA 13h 42.1m · Dec +09° 29′

    z = 7.54

    Altitude
    –
    Azimuth
    –
    Rises
    –
    Joseph Hennawi

  4. Quasar

    J0252-0503

    RA 02h 52.3m · Dec −05° 04′

    z = 7.00

    Altitude
    –
    Azimuth
    –
    Rises
    –
    Joseph Hennawi

  5. Quasar

    QSO J0910-0414

    RA 09h 10.9m · Dec −04° 14′

    z = 6.64

    Altitude
    –
    Azimuth
    –
    Rises
    –
    Joseph Hennawi

  6. Quasar

    J0100+2802

    RA 01h 00.2m · Dec +28° 02′

    z = 6.33

    Altitude
    –
    Azimuth
    –
    Rises
    –
    Joseph Hennawi

  7. Quasar

    PSO J158.6937-14.4210

    RA 10h 34.8m · Dec −14° 25′

    z = 6.05

    Altitude
    –
    Azimuth
    –
    Rises
    –
    Joseph Hennawi

  8. Quasar

    QSO J0313-1806

    RA 03h 13.7m · Dec −18° 07′

    z = 7.64

    Altitude
    –
    Azimuth
    –
    Rises
    –
    Joseph Hennawi

  9. Quasar

    QSO J1120+0641

    RA 11h 20.0m · Dec +06° 41′

    z = 7.09

    Altitude
    –
    Azimuth
    –
    Rises
    –
    Joseph Hennawi

  10. Quasar

    QSO J1129+1846

    RA 11h 29.4m · Dec +18° 46′

    z = 6.82

    Altitude
    –
    Azimuth
    –
    Rises
    –
    Joseph Hennawi

All the group's targets on the full sky map

§ 04Publications

Recent papers

The newest papers in this theme, from NASA ADS. Group members are in gold.

  1. 01Oct 2026arXiv
    The Role of the Cosmic Web in Galaxy Evolution Across 0.4<z<4S. Taamoli, B. Mobasher, H. Hatamnia, N. Chartab, J. R. Weaver, G. Gozaliasl, A. M. Koekemoer, C. M. Casey et al. (15 authors)GalaxiesCosmic dawn
    arXiv:2610.07710
  2. 02Oct 2026arXiv
    X-ray Characterization of Galaxy Groups and Hickson Groups in COSMOS-Web to z~3.8 I. X-ray Luminosity Function EvolutionG. Gozaliasl, G. Hasinger, G. Leroy, A. Finoguenov, F. Abedini, H. B. Akins, R. C. Arango-Toro, A. Babul et al. (38 authors); UCSB: C. M. CaseyGalaxiesCosmic dawn
    arXiv:2610.02470
  3. 03Oct 2026arXiv
    Do Submillimeter Galaxies Trace Megaparsec Large-scale Structures? -- An Overdensity Analysis of 449 Submillimeter Galaxies in COSMOSC. Deng, D. Liu, H. Dannerbauer, G. Castignani, R. Calvi, L. Moscardini, B. Magnelli, S. Adscheid et al. (22 authors); UCSB: C. CaseyGalaxiesCosmic dawn
    arXiv:2610.01136
  4. 04Sep 2026arXiv
    CHAMPS: Data Reduction and Detection of ~3300 Dusty Galaxies at 1.2 mmF. Martinez, J. S. Karaltepe, A. L. Faisst, A. S. Long, J. A. Zavala, C. M. Casey, J. McKinney, E. Treister et al. (55 authors)GalaxiesCosmic dawn
    arXiv:2609.36076
  5. 05Sep 2026arXiv
    CHAMPS: The COSMOS High-Redshift ALMA-MIRI Population Survey - A New Census of the Dusty Early UniverseA. L. Faisst, F. Martinez, J. S. Kartaltepe, M. Aravena, C. M. Casey, J. D. Silverman, S. Toft, E. Treister et al. (89 authors); UCSB: C. L. MartinGalaxiesCosmic dawn
    arXiv:2609.35992
  6. 06Sep 2026arXiv
    COSMOS-3D: Diverse Environments and Hot-dust Signatures among Dusty Star-forming Galaxies at z = 4.9-7.2S. Zou, M. Aravena, S. Geng, R. A. Meyer, J. Lyu, J. B. Champagne, J.-S. Huang, A. L. Faisst et al. (23 authors); UCSB: C. M. CaseyGalaxiesCosmic dawn
    arXiv:2609.35987
  7. 07Sep 2026arXiv
    A Coherent Search for New Galactic Magnetars using Fermi/GBM and follow-up Swift/BAT: 7 Candidates and a Large Burst CatalogA. Perera, B. Zackay, T. VenumadhavBlack holes & GWCosmic dawn
    arXiv:2609.26897
  8. 08Sep 2026arXiv
    A Multi-Mission Detection Framework for High-Energy Transients: Application to a 13-year Fermi/GBM and Swift/BAT SampleA. Perera, B. Zackay, T. VenumadhavBlack holes & GWCosmic dawn
    arXiv:2609.25672
  9. 09Sep 2026arXiv
    Calcium Triplet Absorption is Common around Little Red DotsJ. E. Greene, H. Liu, R. E. Hviding, R. P. Naidu, D. J. Setton, B. Wang, I. Labbe, V. Kokorev et al. (32 authors); UCSB: C. M. CaseyGalaxiesCosmic dawn
    arXiv:2609.25349
  10. 10Sep 2026arXiv
    Star Formation and Nebular Attenuation from Paα, Brα, and Brβ in Massive Dust-obscured Galaxies at Cosmic Noon using JWSTV. Vanicek, J. McKinney, A. Pope, A. Sajina, S. Alberts, M. Stone, L. Armus, S. M. Manning et al. (17 authors); UCSB: C. CaseyGalaxiesCosmic dawn
    arXiv:2609.22428
  11. 11Sep 2026arXiv
    ALMA Chemical Evolution (ACE) survey: an overview -- extending dust and gas inference to low metallicities at cosmic noonI. Shivaei, G. Popping, L. A. Boogaard, A. Pope, I. Langan, R. Popescu, N. N. Geesink, M. Solimano et al. (16 authors); UCSB: C. M. CaseyGalaxiesCosmic dawn
    arXiv:2609.21604
  12. 12Sep 2026arXiv
    A large overdensity of LRD-like galaxies discovered by JWST in the SPT2349-56 protocluster at z=4.30S. C. Chapman, K. A. Phadke, N. Sulzenauer, D. Zhou, H. Akins, M. Aravena, J. R. Burgoyne, C. M. Casey et al. (23 authors)GalaxiesCosmic dawn
    arXiv:2609.21337
  13. 13Sep 2026arXiv
    BAQARO: Tracing Stochastic Black Hole Growth Histories and Quasar Lightcurves in a Cosmological ContextE. Pizzati, J. F. Hennawi, J. SchayeCosmic dawn
    arXiv:2609.12061
  14. 14Sep 2026arXiv
    JWST Spectra Conclusively Show an Excess of Neutral Gas Outflows in Quiescent Galaxies at z=2-5R. Oh, G. Khullar, A. S. Long, J. Sarmiento, H. B. Akins, C. M. Casey, Y. Cheng, A. L. Faisst et al. (18 authors)GalaxiesCosmic dawn
    arXiv:2609.09459
  15. 15Sep 2026arXiv
    The Roman eXtreme Deep Field (RXDF)H. Yan, A. M. Koekemoer, Y. Shen, B. Sun, N. A. Grogin, Z. Wu, C. K. Jespersen, R. Somerville et al. (130 authors); UCSB: C. M. CaseyGalaxiesCosmic dawn
    arXiv:2609.08145

All 312 papers in this theme since 2020

§ 05News

Related news

Stories about faculty in this theme.

All physics and astronomy stories at UCSB News