中文
相关论文

相关论文: Extended far-ultraviolet emission in distant dwarf…

200 篇论文

The far-ultraviolet (FUV) number counts of galaxies constrain the evolution of the star-formation rate density of the universe. We report the FUV number counts computed from FUV imaging of several fields including the Hubble Ultra Deep…

宇宙学与河外天体物理 · 物理学 2015-05-28 Elysse N. Voyer , Jonathan P. Gardner , Harry I. Teplitz , Brian D. Siana , Duilia F. de Mello

We present multi-wavelength imaging and analysis of a low surface brightness (LSB) dwarf galaxy in the Extended Chandra Deep Field South (ECDFS), SMDG0333094-280938, with particular emphasis on data from the Euclid space telescope and from…

星系天体物理 · 物理学 2025-07-17 Aaron J. Romanowsky , Yimeng Tang , Kevin A. Bundy

Using early data from the Infrared Array Camera (IRAC) on the Spitzer Space Telescope, taken for the Great Observatories Origins Deep Survey (GOODS), we identify and study objects that are well-detected at 3.6um, but are very faint (and in…

We present the results of ultraviolet (UV) photometry of the old open cluster M67 obtained using Galaxy Evolution Explorer (GALEX) in far-ultraviolet (FUV) and near-ultraviolet (NUV) bands. UV detections of 18 blue straggler stars (BSSs), 3…

太阳与恒星天体物理 · 物理学 2018-09-12 Sindhu N , Annapurni Subramaniam , C Anu Radha

This paper is part of a series of publications which present a systematic study of Blue Compact Dwarf (BCD) Galaxies in the Near Infrared (NIR). Compared to the visible light, NIR data allow a better separation of the starburst emission…

天体物理学 · 物理学 2009-11-10 K. G. Noeske , P. Papaderos , L. M. Cairos , K. J. Fricke

We present a Far-Ultraviolet (FUV) study of sixteen star-forming dwarf galaxies (SFDGs) using the Ultraviolet Imaging Telescope (UVIT). Morphologically, SFDGs are classified as dwarf spirals, dwarf irregulars, and blue compact dwarfs…

星系天体物理 · 物理学 2024-04-02 S Amrutha , Mousumi Das , Jyoti Yadav

We measured the X-ray fluxes from an optically-selected sample of blue compact dwarf galaxies (BCDs) with metallicities <0.07 and solar distances less than 15 Mpc. Four X-ray point sources were observed in three galaxies, with five galaxies…

星系天体物理 · 物理学 2015-05-30 Philip Kaaret , Joseph Schmitt , Mark Gorski

In a spectroscopic survey of the Fornax cluster to Bj=17.5 using the FLAIR spectrograph on the UK Schmidt Telescope we have discovered seven new compact dwarf cluster members. These were previously thought to be giant background spirals.…

天体物理学 · 物理学 2007-05-23 M. J. Drinkwater , M. D. Gregg , R. M. Smith

We have compared far-ultraviolet (FUV), near-ultraviolet (NUV), and Halpha measurements for star forming regions in 21 galaxies, in order to characterise the properties of their discs at radii beyond the main optical radius (R25). In our…

宇宙学与河外天体物理 · 物理学 2015-05-18 Q. E. Goddard , R. C. Kennicutt , E. V. Ryan-Weber

We used the $H\alpha$ images from a large sample of nearby late-type dwarf galaxies to investigate properties of their emission structure. The sample consists of three hundred galaxies of the irregular (Irr), Magellanic irregular (Im), blue…

星系天体物理 · 物理学 2020-12-16 Karachentsev I. D. , Kaisin S. S

We examine FUV images of the LITTLE THINGS sample of nearby dwarf irregular (dIrr) and Blue Compact Dwarf (BCD) galaxies to identify distinct young regions in their far outer disks. We use these data, obtained with the Galaxy Evolution…

星系天体物理 · 物理学 2016-05-25 Deidre A. Hunter , Bruce G. Elmegreen , Elizabeth Gehret

We present the results of UBV imaging of a large sample of irregular galaxies: 94 Im systems, 24 Blue Compact Dwarfs (BCDs), and 18 Sm galaxies. We also include JHK imaging of 41 of these galaxies. The sample spans a large range in galactic…

天体物理学 · 物理学 2009-11-11 Deidre A. Hunter , Bruce G. Elmegreen

We have identified 15 XUV disks in a largely field sample of 38 E/S0 galaxies with stellar masses primarily below ~4 x 10^10 M_sun and comparable numbers on the red and blue sequences. We use a new purely quantitative XUV disk definition…

宇宙学与河外天体物理 · 物理学 2015-06-03 Amanda J. Moffett , Sheila J. Kannappan , Andrew J. Baker , Seppo Laine

[Abridged] We present deep optical and near-infrared UBVRIHKs imaging data for 24 blue compact galaxies (BCGs). The sample contains luminous dwarf and intermediate-mass BCGs which are predominantly metal-poor, although a few have near-solar…

宇宙学与河外天体物理 · 物理学 2015-06-11 Genoveva Micheva , Göran Östlin , Nils Bergvall , Erik Zackrisson , Josefa Masegosa , Isabel Marquez , Thomas Marquart , Florence Durret

We present low- and high-resolution Spitzer/IRS spectra, supplemented by IRAC and MIPS measurements, of 22 blue compact dwarf (BCD) galaxies. The BCD sample spans a wide range in oxygen abundance [12+Log(O/H) between 7.4 and 8.3], and…

宇宙学与河外天体物理 · 物理学 2015-05-18 Leslie K. Hunt , Trinh X. Thuan , Yuri I. Izotov , Marc Sauvage

We study the correlation between the radio, mid-infrared and far-infrared properties for a sample of 28 blue compact dwarf (BCD) and low metallicity star-forming galaxies observed by Spitzer. We find that these sources extend the same…

天体物理学 · 物理学 2009-11-13 Yanling Wu , V. Charmandaris , J. R. Houck , J. Bernard-Salas , V. Lebouteiller , B. R. Brandl , D. Farrah

We present an analysis of ultraviolet (UV) emission in the outer regions of a local, volume-limited sample of 56 early-type galaxies, where H{\alpha} emission from massive star formation is typically absent. We find excess faint NUV…

宇宙学与河外天体物理 · 物理学 2010-12-13 Jennifer Donovan Meyer , J. H. van Gorkom , David Schiminovich

We determine and examine the star-formation rates of 50 well known, local Blue Compact Dwarf (BCD) galaxies based on their 1.4 GHz and 60 $\mu$m luminosities. We find that in cases for which both radio and far-infrared luminosities are…

天体物理学 · 物理学 2008-12-18 A. M. Hopkins , R. E. Schulte-Ladbeck , I. O. Drozdovsky

We present B, R, and Halpha images for a total of 114 nearby galaxies (v_helio<4000km/s) that, with exception of 9 objects, are classified as Blue Compact Dwarfs (BCDs). BR integrated magnitudes, Halpha fluxes and Halpha equivalent widths…

天体物理学 · 物理学 2009-10-12 A. Gil de Paz , B. F. Madore , O. Pevunova

We present deep surface photometry of a volume--limited sample of 21 UM emission line galaxies in broadband optical UBVRI and near infra-red (NIR) HKs filters. The sample comprises 19 blue compact galaxies (BCGs) and two spirals. For some…