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With the Hubble Frontier Fields program, gravitational lensing has provided a powerful way to extend the study of the ultraviolet luminosity function (LF) of galaxies at $z \sim 6$ down to unprecedented magnitude limits. At the same time,…

Astrophysics of Galaxies · Physics 2018-07-25 Hakim Atek , Johan Richard , Jean-Paul Kneib , Daniel Schaerer

We apply a simple statistical method (Derenzo & Hildebrand 1969) to estimating the completeness of quasar surveys. It requires that an area has been covered by two or more, preferably different, selection techniques. We use three suitable…

Astrophysics · Physics 2009-10-31 Matthew J. Graham , Roger G. Clowes , Luis E. Campusano

The bright end of the rest-frame UV luminosity function (UVLF) of high-redshift galaxies is modified by gravitational lensing magnification bias. Motivated by recent discoveries of very high-z galaxies with JWST, we study the dependence of…

Cosmology and Nongalactic Astrophysics · Physics 2023-05-10 Giovanni Ferrami , J. Stuart B. Wyithe

UVCANDELS is a HST Cycle-26 Treasury Program awarded 164 orbits of primary ultraviolet (UV) F275W imaging and coordinated parallel optical F435W imaging in four CANDELS fields: GOODS-N, GOODS-S, EGS, and COSMOS, covering a total area of…

We discuss a bias present in the calculation of the global luminosity function (LF) which occurs when analysing faint galaxy samples. This effect exists because of the different spectral energy distributions of galaxies, which are in turn…

We conduct a first comprehensive study of the Luminosity Function (LF) using a non-parametric approach. We use Gaussian Process to fit available luminosity data between redshifts $z \sim 2-8$. Our free-form LF in the non-parametric approach…

Astrophysics of Galaxies · Physics 2024-12-24 Debabrata Adak , Dhiraj Kumar Hazra , Sourav Mitra , Aditi Krishak

In this paper, we present a derivation of the rest-frame 1400A luminosity function (LF) at redshift six from a new application of the maximum likelihood method by exploring the five deepest HST/ACS fields, i.e., the HUDF, two UDF05 fields,…

We use the largest sample of z~6 galaxies to date from the first four Hubble Frontier Fields clusters to set constraints on the shape of the z~6 luminosity functions (LFs) to fainter than Muv=-14 mag. We quantify, for the first time, the…

Astrophysics of Galaxies · Physics 2017-07-26 R. J. Bouwens , P. A. Oesch , G. D. Illingworth , R. S. Ellis , M. Stefanon

We determine the bright end of the rest-frame UV luminosity function (UVLF) at $z=8-10$ by selecting bright $z\gtrsim 8$ photometric candidates from the largest systematic compilation of HST (pure-)parallel observations to date, the…

Astrophysics of Galaxies · Physics 2023-08-02 Nicha Leethochawalit , Guido Roberts-Borsani , Takahiro Morishita , Michele Trenti , Tommaso Treu

We present a new maximum likelihood method for the calculation of galaxy luminosity functions from multi-band photometric surveys without spectroscopic data. The method evaluates the likelihood of a trial luminosity function by directly…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Daniel Christlein , Eric Gawiser , Danilo Marchesini , Nelson Padilla

One of the most exciting advances of the current generation of telescopes has been the detection of galaxies during the epoch of reionization, using deep fields that have pushed these instruments to their limits. It is essential to optimize…

Cosmology and Nongalactic Astrophysics · Physics 2022-08-31 A. C. Trapp , Steven R. Furlanetto

The installation of the Wide Field Camera 3 (WFC3) on the Hubble Space Telescope (HST) will revolutionize the study of high-redshift galaxy populations. Initial observations of the HST Ultra Deep Field (UDF) have yielded multiple z>~7…

Instrumentation and Methods for Astrophysics · Physics 2015-03-13 Brant E. Robertson

Exploiting the power of gravitational lensing, the Hubble Frontier Fields (HFF) program aims at observing six massive galaxy clusters to explore the distant Universe far beyond the depth limits of blank field surveys. Using the complete…

Observations of high-redshift galaxies have provided us with a rich tool to study the physics at play during the epoch of reionisation. The luminosity function (LF) of these objects is an indirect tracer of the complex processes that govern…

Cosmology and Nongalactic Astrophysics · Physics 2022-04-04 Nashwan Sabti , Julian B. Muñoz , Diego Blas

We present a comprehensive study of the galaxy UV luminosity function (UVLF) at $z=6-9$ leveraging deep JWST observations from the GLIMPSE survey. Thanks to gravitational lensing, we probe the UVLF to an unprecedented depth of…

Thanks to the successful performance of the James Webb Space Telescope, our understanding of the epoch of reionization of the Universe has been advanced. The ultraviolet luminosity functions (UV LFs) of galaxies span a wide range of…

Cosmology and Nongalactic Astrophysics · Physics 2024-10-03 Yi-Ying Wang , Lei Lei , Shao-Peng Tang , Guan-Wen Yuan , Yi-Zhong Fan

We present the deepest study to date of the Lya luminosity function (LF) in a blank field using blind integral field spectroscopy from MUSE. We constructed a sample of 604 Lya emitters (LAEs) across the redshift range 2.91 < z < 6.64 using…

Despite the great potential of the U-band galaxy luminosity function (GLF) to constrain the history of star formation in clusters, to clarify the question of variations of the GLF across filter bands, to provide a baseline for comparisons…

Astrophysics · Physics 2009-11-10 Daniel Christlein , Daniel H. McIntosh , Ann I. Zabludoff

We studied the statistical methods for the estimation of the luminosity function (LF) of galaxies. We focused on four nonparametric estimators: $1/V_{\rm max}$ estimator, maximum-likelihood estimator of Efstathiou et al. (1988),…

Astrophysics · Physics 2009-10-31 Tsutomu T. Takeuchi , Kohji Yoshikawa , Takako T. Ishii

The Ultraviolet Luminosity Function (UVLF) is a key observable for understanding galaxy formation from cosmic dawn. There has been considerable debate on whether Schechter-like LFs (characterized by an exponential drop-off at the bright…

Astrophysics of Galaxies · Physics 2019-06-26 Keven Ren , Michele Trenti , Charlotte A. Mason
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