Results 1 to 10 of about 1,426,420 (265)

Low-mass Active Galaxies in the SAMI Galaxy Survey with Spatially Resolved Spectroscopy [PDF]

open access: goldThe Astrophysical Journal
Abstract The smallest supermassive black holes (BHs), which provide constraints on BH seeds, reside in low-mass galaxies. Here, we present a systematic analysis of 990 low-mass galaxies in the SAMI Galaxy Survey to identify emission from accreting BHs using integral field spectroscopy (IFS).
Stellan Bechtold, Amy Reines
  +6 more sources

OPTICAL SPECTROSCOPY OF DISTANT RED GALAXIES [PDF]

open access: yesThe Astrophysical Journal, 2009
We present optical spectroscopic follow-up of a sample of Distant Red Galaxies (DRGs) with K < 22.5 (Vega), selected by J-K > 2.3, in the Hubble Deep Field South, the MS 1054-03 field, and the Chandra Deep Field South. Spectroscopic redshifts were obtained for 15 DRGs. Only 2 out of 15 DRGs are located at z < 2, suggesting a high efficiency to
Wuyts, Stijn   +6 more
openaire   +4 more sources

CLEAR: The Morphological Evolution of Galaxies in the Green Valley

open access: yesThe Astrophysical Journal, 2023
Quiescent galaxies having more compact morphologies than star-forming galaxies has been a consistent result in the field of galaxy evolution. What is not clear is at what point this divergence happens, i.e., when do quiescent galaxies become compact, and
Vicente Estrada-Carpenter   +10 more
doaj   +1 more source

Spectroscopy of the galaxy components of N and Seyfert galaxies [PDF]

open access: yesPublications of the Astronomical Society of the Pacific, 1987
Nuclear and off-nuclear spectra of nine active galaxies are presented. The sample consists of four Seyfert galaxies, two N galaxies, one Seyfert radio galaxy, and one liner/Seyfert 2 galaxy. All of the objects show continuum emission off the nucleus. Four clearly show absorption features from a stellar population.
Todd A. Boroson, J. B. Oke
openaire   +1 more source

Near-infrared spectroscopy of starburst galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2001
19 pages, Latex, 12 encapsulated Postscript figures, Accepted for publication in ...
Coziol, R., Doyon, R., Demers, S.
openaire   +2 more sources

Mass–Metallicity Relationship of SDSS Star-forming Galaxies: Population Synthesis Analysis and Effects of Star Burst Length, Extinction Law, Initial Mass Function, and Star Formation Rate

open access: yesThe Astrophysical Journal, 2023
We investigate the mass–metallicity relationship of star-forming galaxies by analyzing the absorption line spectra of ∼200,000 galaxies in the Sloan Digital Sky Survey.
Eva Sextl   +3 more
doaj   +1 more source

The Origin of Star-forming Rings in S0 Galaxies

open access: yesThe Astrophysical Journal, 2023
Spatially resolved integral field spectroscopic maps in a sample of 532 S0 galaxies from the MaNGA survey have unveiled the existence of inner rings (〈 R 〉 ∼ 1 R _e ) betraying ongoing star formation in a number of these objects.
J. L. Tous   +3 more
doaj   +1 more source

Herschel Spectroscopy of Early-type Galaxies [PDF]

open access: yesThe Astrophysical Journal, 2017
Abstract We present Herschel spectroscopy of atomic lines arising in photodissociation regions as well as ionization regions of nearby early-type galaxies (ETGs), focusing on the volume-limited Atlas3D sample. Our data include the [C ii], [O i], and [N ii] 122 and 205 μm lines, along with ancillary data including CO and H i maps. We find
Ryen Carl Lapham   +2 more
openaire   +2 more sources

Spectroscopy of Giants of the Sagittarius Dwarf Galaxy [PDF]

open access: yesAstrophysics and Space Science, 1999
To be published in the proceedings of Galaxy evolution:Connecting the distant Universe with the local fossil record.
Bonifacio, P.   +3 more
openaire   +2 more sources

Optical spectroscopy of southern radio galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1993
We present optical spectroscopy of 11 radio galaxies, using the Anglo-Australian Telescope. Redshifts are measured for the seven radio galaxies with no previously published values, and for the other four which have uncertain ...
Simpson, C   +3 more
openaire   +2 more sources

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