Astro-ph Club 2016

Time : Every Wednesday 10:30 AM
Location: The 2nd floor lounge in Leewonchul Hall
Organizer : Yun-Kyeong Sheen

Date Title First author Speaker Keywords arXiv link
2016/01/20 The fate of high-redshift massive compact galaxies Ignacio G. de la Rosa 김민진 Low-z counterparts of high-z red nuggets arXiv:1601.03920
The KMOS Redshift One Spectroscopic Survey (KROSS): Dynamical properties, gas and dark matter fractions of typical z~1 star-forming galaxies John P. Stott 신윤경 The KMOS survey of ~600 star-forming galaxies at z = 0.8-1.0 arXiv:1601.03400
A polarimetirc method for measuring black hole masses in Active Galactic Nuclei M. Yu. Piotrovich 박대성 polarimetry, inferring inclination angle with assumed geometry and theoretical prediction, f-factor arXiv:1509.01028
2016/1/27 Spectacular tails of ionised gas in the Virgo cluster galaxy NGC 4569 A. Boselli 신윤경 Long tails of diffuse ionised gas without any associated stellar component of NGC 4569 revealed by deep H_alpha+[NII] imaging. Ram pressure stripping. arXiv:1601.04978
Faint COSMOS AGN at z~3.3 - I. Black Hole Properties and Constraints on Early Black Hole Growth Benny Trakhtenbrot 박대성 X-ray selected sample in COSMOS, Keck K-band spectroscopy, low-L AGNs at z~3, BH seeds, evolution of obscuration and radiative efficiency arXiv:1512.04551
Observational evidence of a slow downfall of star formation efficiency in massive galaxies during the last 10 Gyr Schreiber 김민진 quenching of massive galaxy due to the slow downfall arXiv:1601.04226
2016/02/03 It's not easy being green: The evolution of galaxy colour in the EAGLE simulation James W. Trayford 신윤경 Quiescently star-forming, rapidly quenching, and rejuvenateing galaxies. t_{green} = 2 Gyr. arXiv:1601.07907
Massive Relic Galaxies Challenge the Co-evolution of Super-massive Black Holes and Their Host Galaxies Anna Ferré-Mateu 박대성 massive compact relic galaxies, HETMGS survey, selecting 3sigma outliers from M-M relation, SDSS imaging (→compact) spec (→old) data, no merging, no structure evolution (skip 2nd phase evolution) arXiv:1506.02663
The Next Generation Virgo Cluster Survey. VII. The intrinsic shapes of low-luminosity galaxies in the core of the Virgo cluster, and a comparison with the Local Group R. Sanchez-Janssen 김민진 intrinsic shape of low-luminosity galaxies arXiv:1602.00012
2016/03/09 The Carnegie-Irvine Galaxy Survey. IV. A Method to Determine the Average Mass Ratio of Mergers That Built Massive Elliptical Galaxies song huang 김민진 merger ratio of nearby elliptical galaxies arXiv:1603.00876
Selection bias in dynamically-measured super-massive black hole samples: its consequences and the quest for the most fundamental relation F. Shankar 김민진 severe selection bias in BH-Galaxy relation arXiv:1603.01276
The cosmic assembly of stellar halos in massive Early-Type Galaxies Fernando Buitrago 신윤경 Hubble Ultra Deep Field imaging of the most massive 6 ETGs at z = 0.6 - 1. Ongoing mass-assembly features in the outer halos. arXiv:1602.01846
The Hydra I cluster core I. Stellar populations in the cD galaxy NGC 3311 C.E. Barbosa et al. 김석 multi-object spectroscopic mode, the different stellar populations in the inner and extended halo reflect the dominance of in situ stars in the former and the accreted origin for the large majority if the stars in the latter. arXiv:1603.02202
2016/03/16 Distinguishing disks from mergers: tracing the kinematic asymmetries in local (U)LIRGs using kinemetry-based criteria Enrica Bellocchi 신윤경 The kinematic characterization to distingush different galaxy evolutionary scenarios. VLT/VIMOS IFS for 38 local (z < 0.1) (U)LIRGs. arXiv:1603.03441
2016/03/23 Are Compton-Thick AGN the Missing Link Between Mergers and Black Hole Growth? Dale Kocevski et al. 박대성 compton-thick AGNs, heavily obscured AGN, host morphology, galaxy mergers, increased fraction of disturbed morphologies with obscuration, merger-triggered obscured SMBH growth is hidden in Compton-thick population arXiv:1509.03629
Early-type galaxy star formation histories in different environments Patrick J. Fitzpatrick 신윤경 Any differences in the star formation histories with environment at fixed structure are very slight. MNRAS.447.1383
Local Analogs for High-redshift Galaxies: Resembling the Physical Conditions of the Interstellar Medium in High-redshift Galaxies F. Blan et al. 김민진 search for local analogs of high-z SF galaxies using the gas properties arXiv:1603.05275
AGN are cooler than you think: the intrinsic far-IR emission from QSOs M. Symeonidis 김민진 bias for using FIR as a tracer of SFR in AGN arXiv:1603.05278
2016/04/06 Galaxy Zoo: Mergers - Dynamical models of interacting galaxies A. J. Holincheck 신윤경 Simulations selected by Citizen Scientists. Galaxy Zoo: Mergers arXiv:1604.00435
2016/04/20 A 17-billion-solar-mass black hole in a group galaxy with a diffuse core J. Thomas et al. 박대성 overmassive BH (~2% of bulge mass), group environment, much less compact, faint and flat core, core E galaxies, core radius than velocity dispersion, gravitational core scouring by BH binary (grav. slingshots; 3-body motion), possible descendant of a luminous quasar, rare or common? arXiv:1604.01400
A mechanism for stimulated AGN feedback in massive galaxies B. R. McNamara 신윤경 A model to explain molecular clouds apparently forming in the wakes of rising X-ray bubbles in central galaxies of clusters and groups. arXiv:1605.04629
Fast outflows and star formation quenching in quasar host galaxies S. Carniani 김민진 sign of SF at the outer part of the galaxy where the outflow is not prominent + suppressed SF at the central part arXiv:1604.04290
2016/05/04 BUDHIES III: The fate of HI and the quenching of galaxies in evolving environments Yara L. Jaffé 김석 environmental effect, post-processing, quenching arXiv:1604.07832
Discovery of a galaxy cluster with a violently starbursting core at z = 2.506 Tao Wang 신윤경 a collapsed, single cluster-sized dark matter halo which is dominated by star forming galaxies in the core arXiv:1604.07404
Zooming in on major mergers: dense, starbursting gas in cosmological simulations Martin Sparre 변우원 Illustris zoom simulation, Major merger, Starburst arXiv:1604.08205
Surface density effects in quenching: cause or effect? Lilly 김민진 arXiv:1604.06459
2016/05/11 The built-up of the red sequence in the Hercules cluster Agulli 김석 glaaxies; cluster; individual A2151 1605.02076.pdf
Stellar and Black Hole Mass Densities as Empirical Tracers of Co-evolution Show Lock-step Growth since z∼3 Jan-Torge Schindler 박대성 constraining BH-galaxy coevolution with independent means (focusing on integrated quantities as a population, not individuals, over a wide redshift range), QLF→BH mass density, SMF or SFRD→stellar mass density, lock-step growth up to z ~ 3, subject to many assumptions and completeness issues arXiv:1604.05333
The spatially resolved dynamics of dusty starburst galaxies in a z ~ 0.4 cluster: beginning the transition from spirals to S0s H. L. Johnson 신윤경 Rich population of recently accreted dusty starburst galaxies in a cluster at z ~ 0.4 arXiv:1605.01058
Creating lenticular galaxies with mergers Miguel Querejeta 신윤경 Major merger simulations to increase the light concentration and reduce the angular momentum arXiv:1605.01910
Globular clusters indicate ultra diffuse galaxies are dwarfs Beasley 김민진 Ultra diffuse galaxies might be failed LMC rather than failed L* galaxies arXiv:1604.08024
2016/05/18 Inferences on the Relations Between Central Black Hole Mass and Total Galaxy Stellar Mass in the high-redshift Universe Marta Volonteri 박대성 the low normalization of the AGN MBH-Mstar relation by Reines & Volonteri 15 can explain the current non-detection of moderate-luminosity AGNs (from X-ray stacking analysis; Chanda 4Ms CDFS) in high-z universe arXiv:1602.05711
Using deep images and simulations to trace collisional debris around massive galaxies Pierre-Alain Duc 신윤경 Conference Proceedings. MATLAS preliminary results on the fraction of disturbed galaxies arXiv:1604.08364
Hubble Space Telescope Observations of Accretion-Induced Star Formation in the Tadpole Galaxy Kiso 5639 D. Elmegreen 김민진 sign of cold accretion in tadpole galaxies arXiv:1605.02822
2016/05/25 A 'Universal' density profile for the outer stellar halos of galaxies Rhea-Silvia Remus 신윤경 The Einasto profile with the Milky Way and Andromeda arXiv:1605.06511
2016/6/1 Gravitational torque-driven black hole growth and feedback in cosmological simulations Daniel Anglés-Alcázar 박대성 a common gas supply (feeding BH) regulated by gravitational torques, as an alternative to AGN feedback, is the primary driver of the observed BH-galaxy co-evolution arXiv:1603.08007
Suppressing star formation in quiescent galaxies with supermassive black hole winds E. Cheung 김민진 AGN feedback by low luminosity AGN might be quite common (and working effectively) in relatively massive galaxies arXiv:1605.07626
The extended optical disk of M101 Mihos et al. 변우원 Deep, wide-field imaging of M101, the structure & stellar populations of M101's outer disk. arXiv:1211.3095
2016/6/15 Size growth of red-sequence early-type galaxies in clusters in the last 10 Gyr S. Andreon  신윤경 14 galaxy clusters from z = 0.023 to z = 1.803 with ACS and WFC3 arXiv:1606.03996
Active galactic nuclei flicker: an observational estimate of the duration of black hole growth phases of ~$10^5$ years Kevin Schawinski 박대성 the duration of an individual AGN phase (lifetime) is observationally constrained to be ~$10^5$ yr (short compared to the total BH growth time, ~$10^7$-$10^9$ yr), which implies that BHs grow via many such short accretion bursts (AGN flickering ~$100$-$10^4$ times). arXiv:1505.06733
Cold, clumpy accretion onto an active supermassive black hole Grant R. Tremblay 김민진 Cold, clumpy accretion onto an active supermassive black hole
Stellar populations in the outer halo of the massive elliptical M49 J. C. Mihos 변우원 Deep, wide-field imaging of M49, extended but extremely metal-poor outer halo arXiv:1301.4989
2016/6/22 A close look at secular evolution: Boxy/peanut bulges reduce gas inflow to the central kiloparsec F. Fragkoudi 김민진 p/b bulges can reduce the gas inflow rate arXiv:1606.04540
Spectroscopic Identification of Type 2 Quasars at Z < 1 in SDSS-III/BOSS S. Yuan 김민진 newly discovered type 2 QSOs using BOSS arXiv:1606.04976
2016/7/13 Dark influences III. Structural characterization of minor mergers of dwarf galaxies with dark satellites Starkenburg 김석 arXiv:1508.06281
GASS 3505: the prototype of HI-excess, passive galaxies K. Geréb 신윤경 HI-ring and stellar streams of a bulge galaxy, multiwavelength analysis and simulations arXiv:1607.01446
The Dragonfly Nearby Galaxies Survey. I. Substantial variation in the diffuse stellar halos around spiral galaxies A. Merritt 김민진 arXiv:1606.08847
A High Stellar Velocity Dispersion and ~100 Globular Clusters for the Ultra Diffuse Galaxy Dragonfly 44 P. van dokkum 김민진 UDG 44 is likely to be a failed Milky way (or LMC) arXiv:1606.06291
2016/7/20 Multi-epoch Spectroscopy of Dwarf Galaxies with AGN Signatures: Identifying Sources with Persistent Broad H-alpha Emission V. F. Baldassare 박대성 to distinguish btw broad emission lines powered by accreting BHs (AGNs) or transient stellar processes (e.g., SNe) in dwarf galaxies follow-up spectroscopic observation is needed to confirm persistent broad lines, as well as narrow line ratios. single-epoch broad H$\alpha$ emission line alone should not be taken as evidence for an AGN in dwarf galaxies. arXiv:1605.05731
The Dragonfly Nearby Galaxies Survey. I. Substantial variation in the diffuse stellar halos around spiral galaxies A. Merritt 변우원 wide field, deep(\mu > 31 mag arcsec-2) optical imaging, stellar mass surface density profile, mean halo mass fraction ~ 0.009 arXiv:1606.08847
The many faces of LINER-like galaxies: a WISE view F. Herpich 신윤경 W_{Halpha} versus W2-W3 of LINERs arXiv:1607.004601
2016/7/27 X-ray observations of dust obscured galaxies in the Chandra Deep Field South A. Corral 박대성 Heavily obscured, Compton-thick (CT; $N_{H}>10^{24}\ \rm cm^{-2}$) AGNs could be hidden in DOGs. Three objects out of a sample of 14 X-ray detected DOGs in CDF-S are classified as CT-AGNs (~20% fraction). arXiv:1605.08189
Dissecting Galaxies: Spatial and Spectral Separation of Emission Excited by Star Formation and AGN Activity Rebecca L. Davies 신윤경 AGN fraction in emission lines by a new spectral decomposition method arXiv:1607.05731
2016/8/3 The SAMI Galaxy Survey: the link between angular momentum and optical morphology L. Cortese 신윤경 Galaxies line on a tight plane defined by their Sérsic index, stellar mass, and specific angular momentum arXiv:1608.00291
An over massive dark halo around an ultra-diffuse galaxy in the Virgo cluster M. A. Beasley 변우원 Counting up the number of GCs is efficient approach to estimate the halo mass arXiv:1602.04002
2016/8/10 The dark nemesis of galaxy formation: why hot haloes trigger black hole growth and bring star formation to an end Richard G. Bower 신윤경 a competition between star formation-driven outflows and gas accretion on to the supermassive black hole arXiv:1607.07445
2016/8/17 Major mergers are not significant drivers of star formation or morphological transformation around the epoch of peak cosmic star formation E. K. Lofthouse 신윤경 a small fraction of the star formations budget (~3%) is triggered by major mergers arXiv:1608.03892
Merging galaxies with tidal tails in COSMOS to z = 1 Zhang Zheng Wen 신윤경 461 merging galaxies with long tidal tails of the COSMOS field arXiv:1608.04298
A monolithic collapse origin for the thin/thick disc structure of the S0 galaxy ESO 243-49 S. Comerón 변우원 co-rotation, similar age, but different metallicity : internal origin for the thick disc of ESO 243-49 arXiv:1608.04238
2016/8/22 - 9/16 Summer Break
2016/9/21 Isolating the young stellar population in the outer disk of NGC 300 T. J. Hillis 변우원 resolved stellar photometry, the young stellar disk is unbroken out to at least ~10.9 kpc. the disturbed HI gas disk is not accompanied by a break in the stellar disk. arXiv:1609.02106
The SAMI galaxy survey: galaxy interactions and kinematic anomalies in Abell 119 오슬희 신윤경 Kinematic misalignments are more often found among the morphologically-disturbed galaxies arXiv:1609.03595
2016/10/05 The role of mergers and halo spin in shaping galaxy morphology Vicente Rodriguez-Gomez 신윤경 for various galaxy mass bins from the Illustris cosmological hydrodynamic simulation arXiv:1609.09498
2016/10/12 Quiescence correlates strongly with directly-measured black hole mass in central galaxies Bryan A. Terrazas 신윤경 the dependence of quiescence on black hole and stellar mass arXiv:1609.07141
Improving the full spectrum fitting method: accurate convolution with Gauss-Hermite functions Michele Cappellari 박대성 The pPXF software has been significantly upgraded to overcome undersampling problem, especially when $\sigma \lesssim \Delta v/2$, using a well-sampled “analytic” Fourier transform in the case of the standard Gauss-Hermite series parameterization for the LOSVD. arXiv:1607.08538
The Halos and Environments of Nearby Galaxies (HERON) Survey(proceedings) Micheal Rich 변우원 Deep imaging(~29 $mag/arcsec^2$), the halo shape relates to the bulge shape. only galaxies Mv < -21 possess 'giant' halos. arXiv:1610.02775
NGC 1068: No change in the mid-IR torus structure despite X-ray variability Lópes-Gonzaga X-ray variation may not be occurred by change of accretion state, but a patchy torus arXiv:1610.03076
Recovering the fundamental plane of galaxies by f(R) gravity V. Borka Jovanović 유재원 gravitation, modified gravity, galaxies, fundamental parameters, galaxies, luminosity function, mass function. arXiv:1610.03336
Scalar Field Dark Matter in Clusters of Galaxies Tula Bernal 유재원 dark matter, galaxy clusters, gravitation, relativity arXiv:1609.08644
2016/10/19 The information content of stellar halos: Stellar population gradients and accretion histories in early-type Illustris galaxies B. Cook 김민진 Halo properties (metallicity and light profile) seems to be correlated with the total amount of accreting stars rather than the merging properties. arXiv:1610.00014
The Formation of Submillimetre-Bright Galaxies from Gas Infall over a Billion Years Desika Narayanan 박대성 The intense SFRs of SMGs are fuelled in part by the infall of a reservoir gas supply enabled by stellar feedback at earlier times, not through major mergers. They are not transient events, but rather natural long-lived submillimeter-luminous phases, with a lifetime of $\sim0.75$ Gyr. The end-product of the central SMGs at $z \sim 2$ is likely compact quiescent galaxy population observed at $z \sim 2$. arXiv:1509.06377
The origin of type-I profiles in cluster lenticular: An interplay between ram pressure stripping and tidally-induced spiral migration Adam J. Clarke 변우원 simulation, ram pressure stripping+radial migration can alter the disk density profile of lenticular galaxies from type-II to type-I. The model predicts a flat age profile of cluster lenticular with type-I disk. arXiv:1610.04030
The Grism Lens-Amplified Survey from Space (GALSS). VII. The diversity of the distribution of star formation i cluster and field galaxies at 0.3 < z < 0.7 Benedetta Vulcani 신윤경 Halpha morphology of galaxies in 10 clusters at 0.3 < z < 0.7 arXiv:1610.04621
2016/10/26 Lya and UV sizes of green pea galaxies Huan Yang 신윤경 Spatial profiles of Lya emission from their 2d COS spectra, and of UV continuum from both the 2D spectra and NUV images. arXiv:1610.05767
Stellar Velocity Dispersion in Mergers: The Effects of Dust and Star Formation Nathaniel R. Stickley 박대성 The distribution of dust with respect to the distribution of young stars is important on measurements of stellar velocity dispersion in mergers of disk galaxies. Dust preferentially obscures (dynamically cool) young star lights, leading to increase of flux-weighted $\sigma_*$ compared to mass-weighted $\sigma_*$. If there is no dust attenuation, flux-weighted $\sigma_*$ tends to be smaller than that of mass-weighted due to higher mass-to-light ratios of young stellar populations (i.e., more weights toward dynamically cooler young stars). arXiv:1610.02601
2016/11/02 Ultra diffuse galaxies outside clusters: clues to their formation and evolution Román&Trujillo 변우원 Scenario: UDGs are old, extended, low surface brightness dwarfs($M\sim10^8M_{\odot}$) galaxies born in the field, are later on processed in groups and ultimately infall into clusters by group accretion. arXiv:1610.08980
The SAMI Galaxy Survey: Asymmetry in gas kinematics and its links to stellar mass and star formation J. V. Bloom 신윤경 Kinematically disturbed galaxies, probed by Halpha emission. arXiv:1610.02773
2016/11/16 The Burrell Schmidt deep Virgo survey: tidal debris, galaxy halos, and diffuse intracluster light in the Virgo cluster J. Christopher Mihos 신윤경 Virgo's diffuse intracluster light (ICL) and a full appendix on observations and data reduction arXiv:1611.04435
2016/11/23 Diverse Stellar Haloes in Nearby Milky Way-Mass Disc galaxies Benjamin Harmsen 변우원 GHOSTS survey. Diversity of stellar halo masses, power law slopes, and axis ratio. Strong correlation between the stellar halo metallicities and the stellar halo masses. Good agreement between observations and accretion-only models arXiv:1611.05448
AGN feedback and the origin of the alpha enhancement in early type galaxies - insights from the GAEA model Gabriella De Lucia 신윤경 The correlation between [a/Fe] and galaxy stellar mass with Galaxy Evolution and Assembly (GAEA) model arXiv:1611.04597
2016/11/30 The red sequence at birth in the galaxy cluster CL J1449+0856 at z = 2 V. Strazzullo 신윤경 HST/WFC3 imaging, one of the few bona-fide established clusters discovered at z =2, early red sequence in the core arXiv:1611.07976
2016/12/07 ALMA observations show major mergers among the host galaxies of fast-growing, high-redshift supermassive black holes B. Trakhtenbrot 변우원 Demonstrations of the diversity of host galaxy properties and gas accretion mechanisms!!! arXiv:1612.00010
Observational diagnostics of gas flows: insights from cosmological simulations Claude-Andre Faucher-Giguere 신윤경 Invited review to appear in Gas Accretion onto Galaxies arXiv:1612.00448
2016/12/21 A deconvolution technique to correct deep images of galaxies from instrumental scattered light E. Karabal 신윤경 remove prominent ghost halos of galaxies arXiv:1612.05122
iPTF Discovery of the Rapid “Turn On” of a Luminous Quasar S. Gezari 박대성 the rapid turn on of a quasar: LINER –(after 12 yrs)→ Type 1 quasar. iPTF 16bco was discovered by iPTF survey (~0.5 mag rise over ~1 month timescale) and flagged as nuclear transient. follow-up spectroscopy (P60, Keck, DCT) shows dramatic appearance of broad Balmer lines and a PL continuum. pre-event opt/UV/X-ray imaging data indicate that quasar continuum increased by a factor of >10 on a timescale of <1 yr in the quasar rest-frame. the mechanism for driving this change of state is likely due to intrinsic change in the accretion rate of accretion disk (e.g., disk instability). arXiv:1612.04830