Results 31 to 40 of about 30,724 (219)

Searching for Spectroscopic Signatures of Ongoing Quenching in SDSS Galaxies

The Astrophysical Journal, 2023
In this paper, we estimate the “star formation change parameter,” SFR _79 , which characterizes the current SFR relative to the average during the last 800 Myr, for ∼300,000 galaxies selected from the Sloan Digital Sky Survey (SDSS).
Andrea Weibel, Enci Wang, Simon J. Lilly
doaj   +1 more source

EAGLE: galaxy evolution with the E-ELT [PDF]

Astronomy & Geophysics, 2010
Chris Evans, Simon Morris, Jean-Gabriel Cuby, Matt Lehnert, Mark Swinbank and Mathieu Puech describe an instrument that could bring distant galaxies and stellar populations within reach of the European Extremely Large Telescope.
Evans, Christopher, Morris, Simon L., Swinbank, Mark, Cuby, Jean-Gabriel, Lehnert, Matthew D., Puech, Mathieu   +5 more
openaire   +3 more sources

Selecting Post-starburst Galaxies Based on Star Formation History

The Astrophysical Journal
Post-starburst (PSB) galaxies are galaxies that have undergone a large burst of star formation followed by rapid quenching. Understanding their properties as a population can help us better understand how galaxies evolve to quiescence.
Sara Starecheski, K. Decker French, Vicente Villanueva, Sebástion F. Sánchez, Tony Wong, Margaret E. Verrico, Alex Green, Akshat Tripathi, Keaton Donaghue   +8 more
doaj   +1 more source

Mapping the dynamics, star-formation rates, and chemical properties of galaxies with integral field spectroscopy [PDF]

, 2005
Major advances in the development of instruments for eight and ten meter class telescopes are revolutionising our understanding of galaxy formation. In particular, Integral Field Spectrographs (which produce a three dimensional {x, y, velocity) map of a ...
Swinbank, Anthony Mark, Swinback, Anthony Mark   +1 more
core  

VERIFICATION OF MACHINE LEARNING METHODS FOR BINARY MORPHOLOGICAL CLASSIFICATION OF GALAXIES FROM SDSS

Odessa Astronomical Publications, 2019
We present a study on the verifica- tion of Machine Learning methods to be applied for binary morphological classification of galaxies. With this aim we used the sample of 60561 galaxies from the SDSSDR9 survey with a redshift of 0 . 02 < z < 0 .
M. Yu. Vasylenko, D. V. Dobrycheva, I. B. Vavilova, O. V. Melnyk, A. A. Elyiv   +4 more
doaj   +1 more source

Optical polarimetry studies of Seyfert galaxies [PDF]

, 1999
Optical imaging polarimetry has been performed on seven nearby Seyfert galaxies, three with face-on and four with edge-on host galaxies of various morphological classifications.
Felton, Michelle Ann
core  

Galaxy Zoo:dust in spiral galaxies [PDF]

, 2010
We investigate the effect of dust on spiral galaxies by measuring the inclination dependence of optical colours for 24 276 well-resolved Sloan Digital Sky Survey (SDSS) galaxies visually classified via the Galaxy Zoo project.
Masters, Karen L., Murray, P, Bamford, S, Slosar, Anze, Thomas, Daniel Georg, Vandenberg, J, Keel, WC, Bamford, Steven, Szalay, Alexander S., Mosleh, Moein, Andreescu, Dan, Bamford, Steven P., Andreescu, D, Thomas, Daniel, Thomas, D, Nichol, Robert, Nichol, R, Edmondson, Edward M., Vandenberg, Jan, Murray, Phil, Lintott, Chris J., Schawinski, Kevin, Masters, KL, Schawinski, K, Raddick, MJ, Keel, William C., Szalay, AS, Mosleh, M, Edmondson, EM, Slosar, A, Lintott, CJ, Nichol, RC, Raddick, M. Jordan   +32 more
core   +1 more source

The Kinematic Bimodality: Efficient Feedback and Cold Gas Deficiency in Slow-rotating Galaxies

The Astrophysical Journal Letters, 2023
The bimodality in the stellar spin of low-redshift (massive) galaxies, ubiquitously existing at all star formation levels and in diverse environments, suggests that galaxies grow and quench through two diverged evolutionary pathways.
Bitao Wang, Yingjie Peng
doaj   +1 more source

Surface photometry of early-type galaxies in rich clusters [PDF]

, 1998
This thesis investigates the morphology of early-type galaxies in two rich clusters using 2D surface photometry. In particular, the amount of light in the 'disk' component is focussed upon, as the presence of a disk is the main morphological criterion in
Steel, James, Steel, J.
core  

Comparing Star Formation Histories and Evolutionary Pathways of Post-starburst and E+A Galaxies in TNG50 and SDSS-IV MaNGA

The Astrophysical Journal
E+A galaxies represent a class of recently quenched objects, with spectra that show evidence of a previous substantial starburst and strong Balmer absorption lines indicative of A-type stellar populations.
Eric Ludwig, Kartheik G. Iyer, Charles Liu, Eric Gawiser, Olivia A. Greene, Juan Pablo Alfonzo   +5 more
doaj   +1 more source