At redshift z = 2, when the Universe was just three billion years old, half of the most massive galaxies were extremely compact and had already exhausted their fuel for star formation1,2,3,4. It is believed that they were formed in intense nuclear starbursts and that they ultimately grew into the most massive local elliptical galaxies seen today, through mergers with minor companions5,6, but validating this picture requires higher-resolution observations of their centres than is currently possible. Magnification from gravitational lensing offers an opportunity to resolve the inner regions of galaxies7. Here we report an analysis of the stellar populations and kinematics of a lensed z = 2.1478 compact galaxy, which—surprisingly—turns out to be a fast-spinning, rotationally supported disk galaxy. Its stars must have formed in a disk, rather than in a merger-driven nuclear starburst8. The galaxy was probably fed by streams of cold gas, which were able to penetrate the hot halo gas until they were cut off by shock heating from the dark matter halo9. This result confirms previous indirect indications10,11,12,13 that the first galaxies to cease star formation must have gone through major changes not just in their structure, but also in their kinematics, to evolve into present-day elliptical galaxies.
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Ilbert, O. et al. Mass assembly in quiescent and star-forming galaxies since z 4 from UltraVISTA. Astron. Astrophys. 556, A55 (2013)
van der Wel, A. et al. 3D-HST+CANDELS: the evolution of the galaxy size-mass distribution since z = 3. Astrophys. J. 788, 28 (2014)
van de Sande, J. et al. Stellar kinematics of z ~ 2 galaxies and the inside-out growth of quiescent galaxies. Astrophys. J. 771, 85 (2013)
Toft, S. et al. Deep absorption line studies of quiescent galaxies at z ~ 2: the dynamical-mass-size relation and first constraints on the fundamental plane. Astrophys. J. 754, 3 (2012)
Toft, S. et al. Submillimeter galaxies as progenitors of compact quiescent galaxies. Astrophys. J. 782, 68 (2014)
Hopkins, P. et al. Compact high-redshift galaxies are the cores of the most massive present-day spheroids. Mon. Not. R. Astron. Soc. 398, 898–910 (2009)
Newman, A. B., Belli, S. & Ellis, R. S. Discovery of a strongly lensed massive quiescent galaxy at z = 2.636: spatially resolved spectroscopy and indications of rotation. Astrophys. J. 813, L7 (2015)
Wuyts, S. et al. On sizes, kinematics, M/L gradients, and light profiles of massive compact galaxies at z ~ 2. Astrophys. J. 722, 1666–1684 (2010)
Dekel, A. et al. Galaxy bimodality due to cold flows and shock heating. Mon. Not. R. Astron. Soc. 368, 2–20 (2006)
Toft, S. et al. Hubble Space Telescope and Spitzer imaging of red and blue galaxies at z ~ 2.5: a correlation between size and star formation activity from compact quiescent galaxies to extended star-forming galaxies. Astrophys. J. 671, 285–302 (2007)
van Dokkum, P. et al. Confirmation of the remarkable compactness of massive quiescent galaxies at z ~ 2.3: early-type galaxies did not form in a simple monolithic collapse. Astrophys. J. 677, L5–L8 (2008)
van der Wel, A. et al. The majority of compact massive galaxies at z ~ 2 are disk dominated. Astrophys. J. 730, 38 (2011)
Belli, S. et al. MOSFIRE spectroscopy of quiescent galaxies at 1.5 < z < 2.5. I. Evolution of structural and dynamical properties. Astrophys. J. 834, 18 (2017)
Ebeling, H., Edge, A. C. & Henry, P. MACS: a quest for the most massive galaxy clusters in the Universe. Astron. J. 553, 668–676 (2001)
Cappellari, M. Improving the full spectrum fitting method: accurate convolution with Gauss-Hermite functions. Mon. Not. R. Astron. Soc. 466, 798–811 (2017)
Kennicutt, R. C. Jr. The Global Schmidt law in star-forming galaxies. Astrophys. J. 498, 541–552 (1998)
Kewley, L. J. Theoretical modeling of starburst galaxies. Astrophys. J. 556, 121–140 (2001)
Yesuf, H. M. From starburst to quiescence: testing active galactic nucleus feedback in rapidly quenching post-starburst galaxies. Astrophys. J. 792, 84 (2014)
Whitaker, K. et al. Constraining the low-mass slope of the star formation sequence at 0.5<z<2.5. Astrophys. J. 795, 104 (2014)
Emsellem, E. et al. The SAURON project—IX. A kinematic classification for early-type galaxies. Mon. Not. R. Astron. Soc. 379, 401–417 (2007)
Puech, M. et al. 3D Spectroscopy with VLT/GIRAFFE. IV. Angular momentum and dynamic support of intermediate redshift galaxies. Astron. Astrophys. 466, 83–92 (2007)
Tacchella, S. et al. Evidence for mature bulges and an inside-out quenching phase 3 billion years after the Big Bang. Science 348, 314–317 (2015)
Behroozi, P. S., Wechsler, R. H. & Conroy, C. The average star formation histories of galaxies in dark matter halos from z=0–8. Astrophys. J. 770, 57 (2013)
Croton, D. et al. The many lives of active galactic nuclei: cooling flows, black holes and the luminosities and colours of galaxies. Mon. Not. R. Astron. Soc. 365, 11–28 (2006)
Oteo, I. et al. Witnessing the birth of the red sequence: ALMA high-resolution imaging of [CII] and dust in two interacting ultra-red starbursts at z = 4.425. Astrophys. J. 827, 34 (2016)
Riechers, D. et al. ALMA imaging of gas and dust in a galaxy protocluster at redshift 5.3: [C II] emission in “typical” galaxies and dusty starbursts ≈1 billion years after the Big Bang. Astrophys. J. 796, 84 (2014)
Barro, G. et al. Keck-I MOSFIRE spectroscopy of compact star-forming galaxies at z >~ 2: high velocity dispersions in progenitors of compact quiescent galaxies. Astrophys. J. 795, 145 (2014)
van Dokkum, P. et al. Forming compact massive galaxies. Astrophys. J. 813, 23 (2015)
Naab, T. et al. The ATLAS3D project–XXV. Two-dimensional kinematic analysis of simulated galaxies and the cosmological origin of fast and slow rotators. Mon. Not. R. Astron. Soc. 444, 3357–3387 (2014)
Postman, M. et al. The cluster lensing and supernova survey with Hubble: an overview. Astrophys. J. Suppl. Ser. 553, 668 (2012)
Zitrin, A. et al. The cluster lensing and supernova survey with Hubble (CLASH): strong-lensing analysis of A383 from 16-band HST/WFC3/ACS imaging. Astrophys. J. 742, 117 (2011)
Zitrin, A. et al. Hubble Space Telescope combined strong and weak lensing analysis of the CLASH sample: mass and magnification models and systematic uncertainties. Astrophys. J. 801, 44 (2015)
Monna, A. et al. Precise strong lensing mass profile of the CLASH cluster MACS 2129. Mon. Not. R. Astron. Soc. 466, 4094–4106 (2017)
Geier, S. et al. VLT/X-Shooter near-infrared spectroscopy and HST imaging of gravitationally lensed z ~ 2 compact quiescent galaxies. Astrophys. J. 777, 87 (2013)
Zabl, J. et al. Deep rest-frame far-UV spectroscopy of the giant Lyman α emitter ‘Himiko’. Mon. Not. R. Astron. Soc. 451, 2050 (2015)
Selsing, J. et al. An X-Shooter composite of bright 1 < z < 2 quasars from UV to infrared. Astron. Astrophys. 585, A87 (2016)
Christensen, L. et al. The low-mass end of the fundamental relation for gravitationally lensed star-forming galaxies at 1 < z < 6. Mon. Not. R. Astron. Soc. 427, 1953–1972 (2012)
Jullo, E. et al. A Bayesian approach to strong lensing modelling of galaxy clusters. New J. Phys. 9, 447–478 (2007)
Meneghetti, M. et al. The Frontier Field Lens Modeling Comparison Project. Preprint at https://arxiv.org/abs/1606.04548 (2016)
Chabrier, G. Galactic stellar and substellar initial mass function. Publ. Astron. Soc. Pacif. 115, 763–795 (2003)
Sandage, A. Star formation rates, galaxy morphology, and the Hubble sequence. Astron. Astrophys. 161, 89–101 (1986)
Charlot, S. & Fall, M. A simple model for the absorption of starlight by dust in galaxies. Astrophys. J. 539, 718–731 (2000)
Zibetti, S. et al. Resolving the age bimodality of galaxy stellar populations on kpc scales. Mon. Not. R. Astron. Soc. 468, 1902–1916 (2017)
Valdes, F. et al. The Indo-US Library of Coudé Feed Stellar Spectra. Astrophys. J. Suppl. Ser. 152, 251–259 (2004)
Wu, Y. et al. Coudé-feed stellar spectral library—atmospheric parameters. Astron. Astrophys. 525, A71 (2011)
Prescott, M., Martin, C. L. & Dey, A. Spatially resolved gas kinematics within a Lyα nebula: evidence for large-scale rotation. Astrophys. J. 799, 62 (2015)
Zibetti, S. Introducing ADAPTSMOOTH, a new code for the adaptive smoothing of astronomical images. Preprint at https://arxiv.org/abs/0911.4956 (2009)
Zibetti, S. et al. Resolved stellar mass maps of galaxies—I. Method and implication for global mass estimates. Mon. Not. R. Astron. Soc. 400, 1181–1198 (2009)
Peng, C. Y. et al. Detailed structural decomposition of galaxy images. Astron. J. 124, 266–293 (2002)
Sarzi, M. et al. The SAURON project—V. Integral-field emission-line kinematics of 48 elliptical and lenticular galaxies. Mon. Not. R. Astron. Soc. 366, 1151–1200 (2006)
Müller-Sánchez, F. et al. Outflows from active galactic nuclei: kinematics of the narrow-line and coronal-line regions in Seyfert galaxies. Astrophys. J. 739, 69 (2011)
Comerford, J. M. & Green, J. E. Offset active galactic nuclei as tracers of galaxy mergers and supermassive black hole growth. Astrophys. J. 789, 112 (2014)
Lotz, J. et al. The effect of mass ratio on the morphology and time-scales of disc galaxy mergers. Mon. Not. R. Astron. Soc. 404, 575–589 (2010)
Hopkins, P. et al. How do disks survive mergers? Astrophys. J. 691, 1168–1201 (2009)
Szomoru, D., Franx, M. & van Dokkum, P. Sizes and surface brightness profiles of quiescent galaxies at z ~ 2. Astrophys. J. 749, 121 (2012)
McGrath, E. et al. Morphologies and color gradients of luminous evolved galaxies at z~1.5. Astrophys. J. 682, 303–318 (2008)
Stockton, A., Canalizo, G. & Maihara, T. A disk galaxy of old stars at z~2.5. Astrophys. J. 605, 37–44 (2004)
Hsu, L.-Y., Stockton, A. & Shin, H.-Y. Compact quiescent galaxies at intermediate redshifts. Astrophys. J. 796, 92 (2014)
Trujillo, I. et al. NGC 1277: a massive compact relic galaxy in the nearby Universe. Astrophys. J. 780, L20 (2014)
Hill, A. et al. A stellar velocity dispersion for a strongly-lensed, intermediate-mass quiescent galaxy at z=2.8. Astrophys. J. 819, 74 (2016)
Puech, M. et al. IMAGES III. The evolution of the near-infrared Tully-Fisher relation over the last 6 Gyr. Astron. Astrophys. 484, 173–187 (2008)
Magdis, G. et al. The evolving interstellar medium of star-forming galaxies since z=2 as probed by their infrared spectral energy distribution. Astrophys. J. 760, 6 (2012)
Coe, D. et al. CLASH: precise new constraints on the mass profile of the galaxy cluster A2261. Astrophys. J. 757, 22 (2012)
Puech, M. et al. 3D spectroscopy with VLT/GIRAFFE. IV. Angular momentum and dynamic support of intermediate redshift galaxies. Astron. Astrophys. 466, 83–92 (2012)
S.T., J.Z., G.M., N.Y.L., C.L.S., C.G.-G. and M.S. acknowledge support from the ERC Consolidator Grant funding scheme (project ConTExt, grant number 648179). C.G. acknowledges support from the VILLUM FONDEN Young Investigator Programme (grant number 10123). G.M. acknowledges support from the Carlsberg Foundation and from the VILLUM FONDEN Young Investigator Programme (grant number 13160). S.Z. and A.G. acknowledge support by the EU Marie Curie Career Integration Grant “SteMaGE” number PCIG12-GA-2012-326466 (call identifier FP7-PEOPLE-2012 CIG). J.Z. acknowledges support of the OCEVU Labex (ANR-11-LABX-0060) and the A*MIDEX project (ANR-11-IDEX-0001-02) funded by the ‘Investissements d’Avenir’ French government programme managed by the French National Research Agency (ANR). We thank M. Yun and R. Cybalski for providing the deep Spitzer data, and D. Watson and F. Valentino for discussions.
The authors declare no competing financial interests.
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Extended data figures and tables
Indicated is the position of the XSHOOTER slit on the target, which has been magnified and stretched by an average factor of about 4.6 by the foreground cluster. The image is a colour composite (B = F435W + F475W; G = F555W + F606W + F775W + F814W + F850LP; R = F105W + F110W + F125W + F140W + F160W) constructed from CLASH data63.
Extended Data Figure 2 Emission line characterization in three spatial extractions of the XSHOOTER spectrum.
The top, middle and bottom panels show the full (|r| < 1.36″), central (|r| < 0.5″) and outer (0.5″ < |r| < 1.36″) extractions, respectively, where |r| is the absolute spatial distance to the center of the galaxy. Plotted is the flux-density (fλ) versus the observed wavelength (λobs) and the rest-frame wavelength (λrest). As described in the legend, the coloured lines represent spectral decomposition into nebular emission lines and stellar continuum, obtained with pPXF/GANDALF50: the pink line displays the best-fitting composite model; the green line is the best-fitting stellar continuum; the blue and dark red lines represent the best-fitting emission lines with and without a statistically significant detection, respectively. Shaded regions indicate spectral regions of low atmospheric transmission or high background that have been excluded from the fit. On each panel the best-fitting (B.F.) systematic velocity shift Vel and dispersion σel of the detected emission (em) lines are indicated.
The full lines show azimuthally averaged radial profiles of median-likelihood stellar population synthesis parameters, derived from the maps in Fig. 3 in elliptical apertures following the best-fitting two-dimensional surface brightness fit. The shaded areas represent the pixel-to-pixel scatter in the median values in the elliptical apertures, not the uncertainties on the individual estimates (see main text). The filled circles with error bars show the median-likelihood parameters and their 68% confidence range from the spectral fits to the central and outer extractions. The dotted line shows the average specific SFR (sSFR) profile from a sample of star-forming (SF) galaxies22 of mass and redshift similar to that of MACS2129−1.
a, Stellar masses and sizes (major-axis effective radii, re,maj) of 2 < z < 2.5 galaxies in the CANDELS survey2. MACS2129−1 falls on the relation for quiescent galaxies. The error bars include both statistical and systematic errors associated with the fitting added in quadrature. b, Vmax/σint versus ellipticity for the two lensed z > 2 compact quiescent galaxies MACS2129−1 and RG1M0150 (ref. 7) compared to similar-mass local galaxies. The grey histogram shows the V/σ posterior distribution from our modelling. MACS2129−1 is thus similar to local late types61,64 (blue), while RG1M0150 is similar to local early types (red). c, The dynamical to stellar mass ratio (within re) of MACS2129−1 is similar to previously observed z > 2 compact quiescent galaxies, including the strongly lensed RG1M0150, and to z ≈ 2 star-forming galaxies of similar age49.
Extended Data Figure 5 Correlations between lensing model parameters and derived structural parameters for MACS2129−1.
Shown are the average light-weighted (‘l.w.’) magnification, the orientation of maximum magnification at the position of MACS2129−1 (‘magni. orient.’), the magnification along this axis (‘major magni.’) and perpendicular to it (‘minor magni.’). These were obtained from 1,979 lensing model realizations (black) sampling the full probability distribution. Also shown are correlations with the galaxy (‘gal’) axis ratios (a/b) and position angles (PA) of MACS2129−1 derived from Galfit analysis of reconstructed source-plane images for a subsample of 98 representative realizations (red).
Distributions of the Sersic model parameter n, the effective radius re, the axis ratio a/b and the position angle PA, derived from two-dimensional surface brightness fits with Galfit, of the source-plane images generated from 98 representative realizations of the lensing model. We adopt the median values of these distributions and their standard deviations as our best-fitting parameters.
Results are shown for a typical realization (middle row), and for the realizations with the maximum (top row) and minimum (bottom row) magnifications for different positions (pos.) within the galaxy. The columns (from left to right) show the observed F160W image, the magnification map, the seeing convolved (FWHM = 0.5″) F160W image, the seeing convolved light (F160W)-weighted magnification map, the source-plane image (crosses at same position) and the average light-weighted magnification contributing to each spatial bin in the XSHOOTER slit (shown in the bottom row). The minor variations are caused by the galaxy 3.5″ west of MACS2129−1 (see middle row).
Extended Data Figure 8 Posterior distributions for the parameters in our dynamical modelling of the rotation and dispersion curves.
Distributions are shown for the seven free parameters of the model: the offset angle between the slit and the major axis of the disk Θoff, the disk inclination i, the maximum velocity of the disk Vmax, the radius at which the disk reaches Vmax (Rmax), the position of the centre of the slit relative to the disk centre (Xc, Yc), and the intrinsic velocity dispersion σint, which is assumed to be constant across the disk. Also shown are inferred distributions for Vmax/σint and the dynamical mass Mdyn. The open histograms show the distributions with priors Θoff = 22° ± 10° and < 0.4 kpc. Filled histograms with the additional prior inclination i = 53.8° ± 2.13°, all derived from Galfit modelling.
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Toft, S., Zabl, J., Richard, J. et al. A massive, dead disk galaxy in the early Universe. Nature 546, 510–513 (2017). https://doi.org/10.1038/nature22388