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Understanding how galaxies interact with the circumgalactic medium (CGM) requires determining how galaxies morphological and stellar properties correlate with their CGM properties. We report an analysis of 66 well-imaged galaxies detected…

[abridged] We present the discovery of four surprisingly bright (H_160 ~ 26 - 27 mag AB) galaxy candidates at z~9-10 in the complete HST CANDELS WFC3/IR GOODS-N imaging data, doubling the number of z~10 galaxy candidates that are known,…

We use the FUV fluxes measured with the GALEX to study the star formation properties of galaxies collected in the "Local Orphan Galaxies" catalog (LOG). Among 517 LOG galaxies having radial velocities V(LG) < 3500 km/s and Galactic…

Cosmology and Nongalactic Astrophysics · Physics 2013-07-23 I. D. Karachentsev , V. E. Karachentseva , O. V. Melnyk , H. M. Courtois

We present the serendipitous discovery of z=4.05 molecular gas CO emission lines with the IRAM Plateau de Bure interferometer coincident with GN20 and GN20.2, two luminous submillimeter galaxies (SMGs) in the Great Observatories Origins…

We perform a morphological study of 124 spectroscopically confirmed cluster galaxies in the z=0.84 galaxy cluster RX J0152.7-1357. Our classification scheme includes color information, visual morphology, and 1-component and 2-component…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Julie B. Nantais , Hector Flores , Ricardo Demarco , Chris Lidman , Piero Rosati , M. James Jee

Twenty-four galaxies with rings or partial rings were studied in the GEMS and GOODS fields out to z~1.4. Most resemble local collisional ring galaxies in morphology, size, and clumpy star formation. Clump ages range from 10^8 to 10^9 yr and…

Astrophysics · Physics 2008-11-26 Debra Meloy Elmegreen , Bruce G. Elmegreen

(Abriged) Our goal here is to provide merger frequencies that encompass both major and minor mergers, derived from close pair statistics. We use B-band luminosity- and mass-limited samples from an Spitzer/IRAC-selected catalogue of GOODS-S.…

Cosmology and Nongalactic Astrophysics · Physics 2010-09-27 C. López-Sanjuan , M. Balcells , P. G. Pérez-González , G. Barro , J. Gallego , J. Zamorano

We present the results of our analysis of the frequencies of galaxies with tidal tails and M51-type galaxies in several deep fields of the Hubble Space Telescope (HDF-N, HDF-S, HUDF, GOODS, GEMS). In total, we have found about seven hundred…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 V. P. Reshetnikov , Y. H. Mohamed

Recent detections of the starburst galaxies M82 and NGC 253 by gamma-ray telescopes suggest that galaxies rapidly forming massive stars are more luminous at gamma-ray energies compared to their quiescent relatives. Building upon those…

High Energy Astrophysical Phenomena · Physics 2015-06-05 Fermi LAT Collaboration , M. Ackermann , M. Ajello , A. Allafort , L. Baldini , J. Ballet , D. Bastieri , K. Bechtol , R. Bellazzini , B. Berenji , E. D. Bloom , E. Bonamente , A. W. Borgland , A. Bouvier , J. Bregeon , M. Brigida , P. Bruel , R. Buehler , S. Buson , G. A. Caliandro , R. A. Cameron , P. A. Caraveo , J. M. Casandjian , C. Cecchi , E. Charles , A. Chekhtman , C. C. Cheung , J. Chiang , A. N. Cillis , S. Ciprini , R. Claus , J. Cohen-Tanugi , J. Conrad , S. Cutini , F. De Palma , C. D. Dermer , S. W. Digel , E. Do Couto e Silva , P. S. Drell , A. Drlica-Wagner , C. Favuzzi , S. J. Fegan , P. Fortin , Y. Fukazawa , S. Funk , P. Fusco , F. Gargano , D. Gasparrini , S. Germani , N. Giglietto , F. Giordano , T. Glanzman , G. Godfrey , I. A. Grenier , S. Guiriec , M. Gustafsson , D. Hadasch , M. Hayashida , E. Hays , R. E. Hughes , G. Jóhannesson , A. S. Johnson , T. Kamae , H. Katagiri , J. Kataoka , J. Knödlseder , M. Kuss , J. Lande , F. Longo , F. Loparco , B. Lott , M. N. Lovellette , P. Lubrano , G. M. Madejski , P. Martin , M. N. Mazziotta , J. E. McEnery , P. F. Michelson , T. Mizuno , C. Monte , M. E. Monzani , A. Morselli , I. V. Moskalenko , S. Murgia , S. Nishino , J. P. Norris , E. Nuss , M. Ohno , T. Ohsugi , A. Okumura , N. Omodei , E. Orlando , M. Ozaki , D. Parent , M. Persic , M. Pesce-Rollins , V. Petrosian , M. Pierbattista , F. Piron , G. Pivato , T. A. Porter , S. Rainò , R. Rando , M. Razzano , A. Reimer , O. Reimer , S. Ritz , M. Roth , C. Sbarra , C. Sgrò , E. J. Siskind , G. Spandre , P. Spinelli , \{L}ukasz Stawarz , A. W. Strong , H. Takahashi , T. Tanaka , J. B. Thayer , L. Tibaldo , M. Tinivella , D. F. Torres , G. Tosti , E. Troja , Y. Uchiyama , J. Vandenbroucke , G. Vianello , V. Vitale , A. P. Waite , M. Wood , Z. Yang

We measure oxygen and nitrogen abundances for 14 star-forming emission line galaxies (ELGs) at 0.11<z<0.5 using Keck/LRIS optical spectroscopy. The targets exhibit a range of metallicities from slightly metal-poor like the LMC to…

Astrophysics · Physics 2009-10-30 Henry A. Kobulnicky , Dennis Zaritsky

We report results based on 35 new spectroscopic redshifts obtained with the Keck Telescope for field galaxies that also have photometry and morphology from survey images taken by the refurbished HST. A sample of 24 redshifts for galaxies…

The star-formation rates and the stellar masses of the host galaxies of AGNs at high-redshifts are keys to understanding the evolution of the relation between the mass of the spheroidal component of a galaxy and the mass of its central…

Astrophysics · Physics 2009-11-11 Masayuki Akiyama

We present an analysis of spectral energy distributions (SEDs), galaxy light profiles, and visual morphological classifications for 194 X-ray luminous AGN (intrinsic absorption-corrected log10 LX(0.5 to 7 keV) less than 42.5, with a maximum…

A combination of ground-based (NTT and VLT) and HST (HDF-N and HDF-S) public imaging surveys have been used to collect a sample of 1712 I-selected and 319 $K\leq 21$ galaxies. Photometric redshifts have been obtained for all these galaxies.…

Astrophysics · Physics 2009-10-31 A. Fontana , N. Menci , S. D'Odorico , E. Giallongo , F. Poli , S. Cristiani , A. Moorwood , P. Saracco

We present the results of a search for the most luminous star-forming galaxies at redshifts z~6 based on CFHT Legacy Survey data. We identify a sample of 40 Lyman break galaxies brighter than magnitude z'=25.3 across an area of almost 4…

Active galactic nuclei (AGN), particularly the most luminous AGN, are commonly assumed to be triggered through major mergers, however observational evidence for this scenario is mixed. To investigate any influence of galaxy mergers on AGN…

Astrophysics of Galaxies · Physics 2017-07-05 Tim Hewlett , Carolin Villforth , Vivienne Wild , Jairo Mendez-Abreu , Milena Pawlik , Kate Rowlands

Using the TNG50 cosmological simulation and observations from the Kilo-Degree Survey (KiDS), we investigate the connection between galaxy mergers and optical morphology in the local Universe over a wide range of galaxy stellar masses…

We investigate the properties of a sample of 35 galaxies, detected with ALMA at 1.1 mm in the GOODS-ALMA field (area of 69 arcmin$^2$, resolution = 0.60", RMS $\simeq$ 0.18 mJy beam$^{-1}$). Using the UV-to-radio deep multiwavelength…

We have used the Hubble Space Telescope's Advanced Camera for Surveys to measure the mass density function of morphologically selected early-type galaxies in the Gemini Deep Deep Survey fields, over the redshift range 0.9 < z < 1.6. Our…