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相关论文: Star formation in Blue compact dwarf galaxies: Mkn…

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We present V and I photometry of the resolved stars in the most metal-deficient blue compact dwarf galaxy known, I Zw 18 (Zsun/50), using Hubble Space Telescope/Advanced Camera for Surveys (ACS) images, the deepest ones ever obtained for…

天体物理学 · 物理学 2009-11-10 Y. I. Izotov , T. X. Thuan

The blue compact dwarf galaxy I Zw 18 is one of the most metal-poor ($Z \sim 3% Z_{\sun}$) star-forming galaxies in the local Universe. Its evolutionary status has sparked debate within the astronomical community. We aim to investigate the…

(abridged) We present new Spitzer, UKIRT and MMT observations of the blue compact dwarf galaxy (BCD) Mrk 996, with an oxygen abundance of 12+log(O/H)=8.0. This galaxy has the peculiarity of possessing an extraordinarily dense nuclear…

天体物理学 · 物理学 2018-05-30 T. X. Thuan , L. K. Hunt , Y. I. Izotov

We present the results of a deep narrow-band [OII] 3727 \AA emission-line search for faint ($g <$ 27), star-forming galaxies in the field of the $z=0.37$ MS1512.4+3647 cluster. We find no evidence for an over-density of emission-line…

天体物理学 · 物理学 2009-11-07 J. M. Lotz , C. L. Martin , H. C. Ferguson

(Abridged) Low-luminosity, active star-forming blue compact galaxies (BCGs) are excellent laboratories for investigating the process of star formation on galactic scales and probing the interplay between massive stars and the surrounding…

星系天体物理 · 物理学 2020-02-19 L. M. Cairós , J. N. González-Pérez

We study the stellar populations, star formation histories and star formation properties for a sample of blue compact dwarf galaxies (BCDs) selected by cross-correlating the Gil de Paz et al. (2003) sample with the Sloan Digital Sky Survey…

宇宙学与河外天体物理 · 物理学 2015-03-17 Yinghe Zhao , Qiusheng Gu , Yu Gao

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

The extent to which star formation varies in galaxies with low masses, low metallicities, and high star formation rate surface densities is not well-constrained. To gain insight into star formation under these physical conditions, this…

星系天体物理 · 物理学 2015-06-18 Amanda A. Kepley , Amy E. Reines , Kelsey E. Johnson , Lisa May Walker

We report the results of near-IR imaging in J and H, of I Zw 36 ($\approx$Z$_{\odot}$/14) with the Hubble Space Telescope. Whereas imaging with the pre-COSTAR Faint Object Camera (FOC) previously resolved hot and massive stars in the…

天体物理学 · 物理学 2019-08-17 Regina E. Schulte-Ladbeck , Ulrich Hopp , Laura Greggio , Mary M. Crone , Igor O. Drozdovsky

We present UBVRI broad band, H$\alpha$ narrow band photometry of the star forming complexes in the infra-red bright galaxy NGC 1084. Results of medium resolution spectroscopy of some of the brighter complexes are also discussed.…

天体物理学 · 物理学 2009-11-13 S. Ramya , D. K. Sahu , T. P. Prabhu

In this paper we present some results concerning the effects of two instantaneous starbursts, separated by a quiescent period, on the dynamical and chemical evolution of blue compact dwarf galaxies. In particular, we compare the model…

天体物理学 · 物理学 2009-11-07 S. Recchi , F. Matteucci , A. D'Ercole , M. Tosi

We present the results of spectrophotometry and V,R,I, Halpha CCD photometry of the blue compact dwarf (BCD) galaxy SBS 0940+544. Broad-band images taken with the 2.1m KPNO and 1.23m Calar Alto telescopes reveal a compact…

Hubble Space Telescope (HST) colour - magnitude diagrams in B, V and R along with long-slit Multiple Mirror Telescope (MMT) spectrophotometric data are used to investigate the evolutionary status of the nearby blue compact dwarf (BCD)…

天体物理学 · 物理学 2007-05-23 Y. I. Izotov , P. Papaderos , T. X. Thuan , K. J. Fricke , C. B. Foltz , N. G. Guseva

We report H$\alpha$ observations of a sample of very isolated blue compact galaxies (BCGs) located in the direction of large cosmic voids obtained to understand their stellar population compositions, the present star formation (SF)…

宇宙学与河外天体物理 · 物理学 2013-07-09 Adi Zitrin , Noah Brosch , Benny Bilenko

We investigate the Spitzer/IRAC properties of 36 z~7 z-dropout galaxies and 3 z~8 Y-dropout galaxies derived from deep/wide-area WFC3/IR data of the Early Release Science, the ultradeep HUDF09, and wide-area NICMOS data. We fit stellar…

宇宙学与河外天体物理 · 物理学 2015-05-14 I. Labbe , V. Gonzalez , R. J. Bouwens , G. D. Illingworth , M. Franx , M. Trenti , P. A. Oesch , P. G. van Dokkum , M. Stiavelli , C. M. Carollo , M. Kriek , D. Magee

It has long been speculated that Blue Compact Dwarf galaxies (BCDs) are formed through the interaction between low-mass gas-rich galaxies, but a few candidates of such systems have been studied in detail. We study a sample of compact…

星系天体物理 · 物理学 2022-12-15 Daya Nidhi Chhatkuli , Sanjaya Paudel , Rajesh Kumar Bachchan , Binil Aryal , Jaewon Yoo

We report measurements of H I content in 11 nearby, actively star-forming, blue compact dwarf galaxies (BCDs) from 21 cm observations with the Arecibo telescope. These BCDs, selected by their red (W2[4.6 $\mu$m]$-$W3[12 $\mu$m]$>$3.8 mag)…

The evolutionary properties and spatial distribution of I Zwicky 18 stellar populations are analyzed by means of HST/ACS deep and accurate photometry. The comparison of the resulting Colour- Magnitude diagrams with stellar evolution models…

宇宙学与河外天体物理 · 物理学 2015-05-28 R. Contreras Ramos , F. Annibali , G. Fiorentino , M. Tosi , A. Aloisi , G. Clementini , M. Marconi , I. Musella , A. Saha , R. P. van der Marel

In this paper, continuation of Gil de Paz et al. (Paper I), we derive the main properties of the stellar populations in the Blue Compact Dwarf galaxy Mrk86. Ages, stellar masses, metallicites and burst strengths have been obtained using the…

天体物理学 · 物理学 2007-05-23 A. Gil de Paz , J. Zamorano , J. Gallego

We present HST WFPC2 V and I images and GHRS UV spectrophotometry of the spectral regions around Ly$_alpha$ and OI 1302 of the extremely metal-deficient (Z~Zsun/41) blue compact dwarf (BCD) galaxy SBS 0335-052. All the star formation in the…

天体物理学 · 物理学 2009-10-28 Trinh X. Thuan , Yu. I. Izotov , V. A. Lipovetsky
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