Outputs (260)

Luminosity and Stellar Mass Functions of Faint Photometric Satellites around Spectroscopic Central Galaxies from DESI Year-1 Bright Galaxy Survey (2025)
Journal Article
Wang, W., Yang, X., Jing, Y., Ross, A. J., Siudek, M., Moustakas, J., Moore, S. G., Cole, S., Frenk, C., Yu, J., Koposov, S. E., Han, J., Tan, Z., Xu, K., Gu, Y., Wang, Y., Gnedin, O. Y., Aguilar, J. N., Ahlen, S., Bianchi, D., …Zou, H. (2025). Luminosity and Stellar Mass Functions of Faint Photometric Satellites around Spectroscopic Central Galaxies from DESI Year-1 Bright Galaxy Survey. The Astrophysical Journal, 986(2), https://doi.org/10.3847/1538-4357/add5df

We measure the luminosity functions (LFs) and stellar mass functions (SMFs) of photometric satellite galaxies around spectroscopically identified isolated central galaxies (ICGs). The photometric satellites are from the DESI Legacy Imaging Surveys (D... Read More about Luminosity and Stellar Mass Functions of Faint Photometric Satellites around Spectroscopic Central Galaxies from DESI Year-1 Bright Galaxy Survey.

DESI Mg ii Absorbers: Extinction Characteristics and Quasar Redshift Accuracy (2025)
Journal Article
Napolitano, L., Myers, A. D., Fawcett, V. A., Aguilar, J., Ahlen, S., Bianchi, D., Brooks, D., Claybaugh, T., Cole, S., de la Macorra, A., Dey, B., Font-Ribera, A., Forero-Romero, J. E., Gaztañaga, E., Gontcho A Gontcho, S., Gutierrez, G., Honscheid, K., Juneau, S., Lambert, A., Landriau, M., …Zou, H. (2025). DESI Mg ii Absorbers: Extinction Characteristics and Quasar Redshift Accuracy. Astronomical Journal, 170(1), Article 16. https://doi.org/10.3847/1538-3881/adc389

In this paper, we study how absorption-line systems affect the spectra and redshifts of quasi-stellar objects (QSOs), using catalogs of Mg ii absorbers from the early data release and first data release of the Dark Energy Spectroscopic Instrument. We... Read More about DESI Mg ii Absorbers: Extinction Characteristics and Quasar Redshift Accuracy.

Lopsidedness in early-type galaxies: the role of the m = 1 multipole in isophote fitting and strong lens modelling (2025)
Journal Article
Amvrosiadis, A., Nightingale, J. W., He, Q., Robertson, A., Lange, S., Frenk, C. S., Cole, S., Massey, R., & Poci, A. (2025). Lopsidedness in early-type galaxies: the role of the m = 1 multipole in isophote fitting and strong lens modelling. Monthly Notices of the Royal Astronomical Society, 540(4), 3281-3288. https://doi.org/10.1093/mnras/staf857

The surface brightness distribution of massive early-type galaxies (ETGs) often deviates from a perfectly elliptical shape. To capture these deviations in their isophotes during an ellipse fitting analysis, Fourier modes of order are often used. In s... Read More about Lopsidedness in early-type galaxies: the role of the m = 1 multipole in isophote fitting and strong lens modelling.

Full-Shape analysis of the power spectrum and bispectrum of DESI DR1 LRG and QSO samples (2025)
Journal Article
Novell-Masot, S., Gil-Marín, H., Verde, L., Aguilar, J., Ahlen, S., Bailey, S., BenZvi, S., Bianchi, D., Brooks, D., Buckley-Geer, E., Carnero Rosell, A., Chaussidon, E., Claybaugh, T., Cole, S., Cuceu, A., Dawson, K., de la Macorra, A., Demina, R., Dey, A., Dey, B., …Zou, H. (2025). Full-Shape analysis of the power spectrum and bispectrum of DESI DR1 LRG and QSO samples. Journal of Cosmology and Astroparticle Physics, 2025(06), 005. https://doi.org/10.1088/1475-7516/2025/06/005

PAC in DESI. I. Galaxy stellar mass function into the 106 M⊙ frontier (2025)
Journal Article
Xu, K., Jing, Y. P., Cole, S., Frenk, C. S., Bose, S., Elbers, W., Wang, W., Wang, Y., Moore, S., Aguilar, J., Ahlen, S., Bianchi, D., Brooks, D., Claybaugh, T., de la Macorra, A., Dey, A., Forero-Romero, J. E., Gaztañaga, E., Gontcho, S. G. A., Gutierrez, G., …Zou, H. (2025). PAC in DESI. I. Galaxy stellar mass function into the 106 M⊙ frontier. Monthly Notices of the Royal Astronomical Society, 540(2), 1635-1667. https://doi.org/10.1093/mnras/staf782

The unabridged satellite luminosity function of Milky Way-like galaxies in ΛCDM: the contribution of ‘orphan’ satellites (2025)
Journal Article
Santos-Santos, I. M. E., Frenk, C. S., Navarro, J. F., Cole, S., & Helly, J. (2025). The unabridged satellite luminosity function of Milky Way-like galaxies in ΛCDM: the contribution of ‘orphan’ satellites. Monthly Notices of the Royal Astronomical Society, 540(1), 1107-1123. https://doi.org/10.1093/mnras/staf749

We study the abundance, radial distribution, and orbits of luminous satellites in simulations of Milky Way-mass dark haloes in the cold dark matter (ΛCDM) cosmology. We follow the evolution of a halo from the Aquarius project and the formation of its... Read More about The unabridged satellite luminosity function of Milky Way-like galaxies in ΛCDM: the contribution of ‘orphan’ satellites.

Analytical and EZmock covariance validation for the DESI 2024 results (2025)
Journal Article
Forero-Sánchez, D., Rashkovetskyi, M., Alves, O., de Mattia, A., Padmanabhan, N., Seo, H., Nadathur, S., Ross, A., Gil-Marín, H., Zarrouk, P., Yu, J., Ding, Z., Andrade, U., Chen, X., Garcia-Quintero, C., Mena-Fernández, J., Ahlen, S., Bianchi, D., Brooks, D., Burtin, E., …Zou, H. (2025). Analytical and EZmock covariance validation for the DESI 2024 results. Journal of Cosmology and Astroparticle Physics, 2025(04), Article 055. https://doi.org/10.1088/1475-7516/2025/04/055

The estimation of uncertainties in cosmological parameters is an important challenge in Large-Scale-Structure (LSS) analyses. For standard analyses such as Baryon Acoustic Oscillations (BAO) and Full-Shape two approaches are usually considered. First... Read More about Analytical and EZmock covariance validation for the DESI 2024 results.

Galaxy mass modelling from multiwavelength JWST strong lens analysis: dark matter substructure, angular mass complexity, or both? (2025)
Journal Article
Lange, S. C., Amvrosiadis, A., Nightingale, J. W., He, Q., Frenk, C. S., Robertson, A., Cole, S., Massey, R., Cao, X., Li, R., & Wang, K. (2025). Galaxy mass modelling from multiwavelength JWST strong lens analysis: dark matter substructure, angular mass complexity, or both?. Monthly Notices of the Royal Astronomical Society, 539(2), 704-726. https://doi.org/10.1093/mnras/staf491

We analyse two galaxy-scale strong gravitational lenses, SPT0418-47 and SPT2147-50, using JWST NIRCam imaging across multiple filters. To account for angular complexity in the lens mass distribution, we introduce multipole perturbations with orders m... Read More about Galaxy mass modelling from multiwavelength JWST strong lens analysis: dark matter substructure, angular mass complexity, or both?.

DESIVAST: Catalogs of Low-redshift Voids Using Data from the DESI Data Release 1 Bright Galaxy Survey (2025)
Journal Article
Rincon, H., Benzvi, S., Douglass, K., Veyrat, D., Aguilar, J. N., Ahlen, S., Bianchi, D., Brooks, D., Claybaugh, T., Cole, S., de la Macorra, A., Doel, P., Font-Ribera, A., Forero-Romero, J. E., Gaztañaga, E., Gontcho A Gontcho, S., Gutierrez, G., Honscheid, K., Howlett, C., Juneau, S., …Zou, H. (2025). DESIVAST: Catalogs of Low-redshift Voids Using Data from the DESI Data Release 1 Bright Galaxy Survey. Astrophysical Journal, 982(1), Article 38. https://doi.org/10.3847/1538-4357/adb559

We present three separate void catalogs created using a volume-limited sample of the DESI Data Release 1 Bright Galaxy Survey. We use the algorithms VoidFinder and V² to construct void catalogs out to a redshift of z = 0.24. Excluding void... Read More about DESIVAST: Catalogs of Low-redshift Voids Using Data from the DESI Data Release 1 Bright Galaxy Survey.

Unraveling emission line galaxy conformity at z ∼1 with DESI early data (2025)
Journal Article
Yuan, S., Wechsler, R. H., Wang, Y., De Los Reyes, M. A., Myles, J., Rocher, A., Hadzhiyska, B., Aguilar, J. N., Ahlen, S., Brooks, D., Claybaugh, T., Cole, S., De La Macorra, A., Forero-Romero, J. E., Gontcho, S. G. A., Guy, J., Honscheid, K., Kisner, T., Levi, M., Manera, M., …Zhou, Z. (2025). Unraveling emission line galaxy conformity at z ∼1 with DESI early data. Monthly Notices of the Royal Astronomical Society, 538(2), 1216-1240. https://doi.org/10.1093/mnras/staf368

Emission line galaxies (ELGs) are now the preeminent tracers of large-scale structure at 0.8$]]> due to their high density and strong emission lines, which enable accurate redshift measurements. However, relatively little is known about ELG evolution... Read More about Unraveling emission line galaxy conformity at z ∼1 with DESI early data.