Results 121 to 130 of about 245,182 (218)

Statistical study of warps in a sample of spiral and lenticular galaxies

NRIAG Journal of Astronomy and Geophysics, 2016
AbstractA sample of edge-on (or nearly edge-on) spiral and lenticular galaxies is selected to study the warp phenomenon in their disks. This sample contains 36 disk galaxies selected from Watanabe’s catalogue (Watanabe, 1983). We investigate the existence of physical relations between photometric and spectroscopic parameters and the warp degree of ...
Alhassan I. Ibrahim, Y. H. M. Hendy, A. A. Shaker, Rania Samir   +3 more
openaire   +2 more sources

Radio Jet Feedback on the Inner Disk of Virgo Spiral Galaxy Messier 58

The Astrophysical Journal
Spitzer spectral maps reveal a disk of highly luminous, warm (>150 K) H _2 in the center of the massive spiral galaxy Messier 58, which hosts a radio-loud active galactic nucleus (AGN). The inner 2.6 kpc of the galaxy appears to be overrun by shocks from
Patrick M. Ogle, Iván E. López, Victoria Reynaldi, Aditya Togi, R. Michael Rich, Javier Román, Osmin Caceres, Zhuofu (Chester) Li, Grant Donnelly, J. D. T. Smith, Philip N. Appleton, Lauranne Lanz   +11 more
doaj   +1 more source

Merging galaxies in isolated environments I. Multiband photometry, classification, stellar masses, and star formation rates

, 2019
Extragalactic surveys provide significant statistical data for the study of crucial galaxy parameters used to constrain galaxy evolution, e.g. stellar mass (M$_*$) and star formation rate (SFR), under different environmental conditions.
Calderón-Castillo, Paula, Chang, Yu-Yen, Hughes, Thomas M., Leiton, Roger, Nagar, Neil M., Orellana, Gustavo, Yi, Sukyoung   +6 more
core   +1 more source

SAUNAS. II. Discovery of Cross-shaped X-Ray Emission and a Rotating Circumnuclear Disk in the Supermassive S0 Galaxy NGC 5084

The Astrophysical Journal
Combining Chandra, Atacama Large Millimeter/submillimeter Array, EVLA, and Hubble Space Telescope archival data and newly acquired data from the Apache Point Observatory/Dual Imaging Spectrograph, we detect a double-lobed 17 kpc X-ray emission with ...
Alejandro S. Borlaff, Pamela M. Marcum, Pasquale Temi, Nushkia Chamba, S. Drew Chojnowski, Enrique Lopez-Rodriguez, Aneta Siemiginowska, Seppo Laine, Anton M. Koekemoer, Kelly N. Sanderson, Audrey F. Dijeau, Moire K. M. Prescott, Leslie Proudfit, Michael N. Fanelli   +13 more
doaj   +1 more source

Detection of a Star Forming Galaxy in the Center of a Low-Mass Galaxy Cluster

, 2018
Brightest Cluster Galaxies (BCGs) residing in the centers of galaxy clusters are typically quenched giant ellipticals. A recent study hinted that star-forming galaxies with large disks, so-called superluminous spirals and lenticulars, are the BCGs of a ...
Andrade-Santos, Felipe, Bogdan, Akos, Forman, William R., Jones, Christine, Kovacs, Orsolya E., Kraft, Ralph P., Lovisari, Lorenzo   +6 more
core   +1 more source

Minor-merger-induced Star Formation Rejuvenation in an Elliptical Radio-loud Quasar Host, 3C 59

The Astrophysical Journal
We report a rare case where an elliptical radio-loud quasar host, 3C 59, rejuvenates star formation activity through minor mergers with its nearby satellite galaxies.
Yijun Wang, Tao Wang, Ke Xu, Junjie Mao, Yerong Xu, Zheng Zhou   +5 more
doaj   +1 more source

The Morphology - Density Relation in z ~ 1 Clusters

, 2005
We measure the morphology--density relation (MDR) and morphology-radius relation (MRR) for galaxies in seven z ~ 1 clusters that have been observed with the Advanced Camera for Surveys on board the Hubble Space Telescope.
A. R. Martel, B. Holden, C. Gronwall, C. J. Burrows, D. A. Golimowski, D. R. Ardila, Della Ceca R., E. S. Cheng, F. Bartko, F. Menanteau, G. D. Illingworth, G. F. Hartig, G. K. Miley, G. R. Meurer, Goto T., H. C. Ford, H. D. Tran, Icke V., J. E. Krist, J. P. Blakeslee, K.‐V. Tran, Kauffmann G., L. D. Bradley, L. Infante, M. Clampin, M. Franx, M. P. Lesser, M. Postman, M. Sirianni, N. Benitez, N. Homeier, N. J. G. Cross, P. D. Feldman, P. Rosati, Ponman T. J., R. A. Brown, R. A. Kimble, R. Demarco, R. J. Bouwens, R. L. White, S. Mei, T. Goto, T. J. Broadhurst, V. Motta, W. B. Sparks, W. Zheng, Z. I. Tsvetanov   +46 more
core   +1 more source

Star formation histories of dwarf lenticular galaxies

Monthly Notices of the Royal Astronomical Society
ABSTRACT Star formation histories (SFHs) are essential for understanding galaxy formation and evolution. We present the mean SFHs of 148 dwarf lenticular galaxies (dS0s) derived from the Sloan Digital Sky Survey spectra. These SFHs reveal two distinct periods of active star formation. The first period, concluding approximately 6 Gyr ago,
Hong Bae Ann, Mira Seo
openaire   +2 more sources

Knowledge-enhanced prototypical network with class cluster loss for few-shot relation classification. [PDF]

PLoS One, 2023
Liu T, Ke Z, Li Y, Silamu W.
europepmc   +1 more source

Stars throw their weight in old galaxies

, 2012
The observation that old, massive galaxies have a larger fraction of low-mass stars than their younger, lower-mass counterparts adds to mounting evidence that star formation may have been different in the early Universe.Comment: Invited Nature "News and ...
Bastian, Nate
core   +1 more source