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We have obtained sensitive upper limits on the CO J=2-1 and CO J=3-2 emission lines for five faint blue galaxies with redshifts $z\sim 0.5$ using the IRAM 30~m telescope. These observations would have been able to detect the luminous…

Astrophysics · Physics 2007-05-23 C. D. Wilson , F. Combes

Spectroscopic long-slit observations of the dwarf Irr galaxy IC 10 were conducted at the 6-m Special Astrophysical Observatory telescope with the SCORPIO focal reducer. The ionized-gas emission spectra in the regions of intense current star…

Cosmology and Nongalactic Astrophysics · Physics 2010-12-23 T. A. Lozinskaya , O. V. Egorov , A. V. Moiseev , D. V. Bizyaev

We report on the first detailed infrared chemical analysis of five binary members (S277, S997, S975, S1031, and S1195) in the open cluster M67 (NGC 2682). These stars are located outside (bluer and/or brighter than) the main-sequence…

Solar and Stellar Astrophysics · Physics 2023-10-02 K. E. Brady , C. Sneden , C. A. Pilachowski , Melike Afşar , G. N. Mace , D. T. Jaffe , N. M. Gosnell , R. Seifert

We present VLT spectroscopic observations with different spectral resolutions and different slit orientations of the two metal-deficient blue compact dwarf (BCD) galaxies Tol 1214-277 and Tol 65. The oxygen abundances in the brightest HII…

Astrophysics · Physics 2009-11-10 Y. I. Izotov , P. Papaderos , N. G. Guseva , K. J. Fricke , T. X. Thuan

Using new J-band VLT-ISAAC and Keck-NIRSPEC spectroscopy, we have measured Halpha and [NII] line fluxes for 0.47<z<0.92 CFRS galaxies which have [OII], Hbeta and [OIII]a line fluxes available from optical spectroscopy, to investigate how…

Astrophysics · Physics 2009-11-13 C. Maier , S. J. Lilly , M. Carollo , A. Stockton , M. Brodwin

We present mid-infrared maps and preliminary analysis for 61 galaxies observed with the ISOCAM instrument aboard the Infrared Space Observatory. Many of the general features of galaxies observed at optical wavelengths---spiral arms, disks,…

Astrophysics · Physics 2009-10-31 Daniel A. Dale , Nancy A. Silbermann , George Helou

We present new Very Large Array observations at five frequencies, from 1.4 to 22GHz, of the extremely low-metallicity blue compact dwarf SBS0335-052. The radio spectrum shows considerable absorption at 1.49GHz, and a composite…

Astrophysics · Physics 2009-11-10 Leslie K. Hunt , Kristy K. Dyer , Trinh X. Thuan , James S. Ulvestad

We present 3.6m ESO telescope spectroscopic observations of the system of the two blue compact dwarf galaxies SBS 0335-052W and SBS 0335-052E. The oxygen abundance in SBS 0335-052W is 12 + log O/H = 7.13 +/- 0.08, confirming that this…

Astrophysics · Physics 2009-11-11 P. Papaderos , Y. I. Izotov , N. G. Guseva , T. X. Thuan , K. J. Fricke

We discuss the approach of searching low mass dwarf galaxies, $\lesssim10^6\textrm{ M}_{\odot}$, in the general field, using integrated light surveys. By exploring the limiting surface brightness-spatial resolution…

Astrophysics of Galaxies · Physics 2018-04-11 Shany Danieli , Pieter van Dokkum , Charlie Conroy

The most intensively star-forming galaxies are extremely luminous at far-infrared (FIR) wavelengths, highly obscured at optical and ultraviolet wavelengths, and lie at $z\ge 1-3$. We present a programme of ${\it Herschel}$ FIR spectroscopic…

Physical properties of the star-forming regions in the local Luminous Compact Blue Galaxy NGC 7673 are studied in detail using 3D spectroscopic data taken with the PPAK IFU at the 3.5-m telescope in CAHA. We derive integrated and spatially…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 A. Castillo-Morales , J. Gallego , J. Pérez-Gallego , R. Guzmán , J. C. Muñoz-Mateos , J. Zamorano , S. F. Sánchez

We present results of an all-sky hard X-ray survey based on almost four years of observations with the IBIS telescope on board the INTEGRAL observatory. The dead time-corrected exposure of the survey is ~33 Ms. Approximately 12% and 80% of…

Astrophysics · Physics 2009-11-13 R. Krivonos , M. Revnivtsev , A. Lutovinov , S. Sazonov , E. Churazov , R. Sunyaev

We have observed 70 galaxies belonging to 45 Hickson compact groups in the CO(1-0) and CO(2-1) lines, in order to determine their molecular content. We detected 57 galaxies, corresponding to a detection rate of 81%. We compare the gas…

Astrophysics · Physics 2007-05-23 S. Leon , F. Combes , T. K. Menon

We present the results from an analysis of surface photometry of B, R, and Halpha images of a total of 114 nearby galaxies drawn from the Palomar/Las Campanas Imaging Atlas of Blue Compact Dwarf galaxies. Surface brightness and color…

Astrophysics · Physics 2009-11-10 A. Gil de Paz , B. F. Madore

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…

We present integral field spectroscopy in the near-infrared of the nearby starburst galaxy IIZw40. Our new observations provide an unprecedented detailed view of the interstellar medium and star formation of this galaxy. The radiation…

Astrophysics · Physics 2009-11-13 L. Vanzi , G. Cresci , E. Telles , J. Melnick

We report the discovery of the high-ionisation [Ne v] 3426A emission line in the spectra of five blue compact dwarf (BCD) galaxies. Adding the three previously known BCDs with [Ne v] emission, the entire sample of such galaxies now contains…

Cosmology and Nongalactic Astrophysics · Physics 2018-05-29 Y. I. Izotov , T. X. Thuan , G. Privon

(Abridged) We present the results of high S/N long-slit spectroscopy with the Multiple Mirror and the SAO 6-m telescopes, optical imaging with the Wise 1-m telescope and HI observations with the Nancay Radio Telescope of the very…

Spectroscopy and V,I CCD photometry of the dwarf irregular galaxy SBS 1129+576 are presented for the first time. The CCD images reveal a chain of compact H II regions within the elongated low-surface-brightness (LSB) component of the…

Astrophysics · Physics 2009-11-07 N. G. Guseva , P. Papaderos , Y. I. Izotov , R. F. Green , K. J. Fricke , T. X. Thuan , K. J. Noeske

FUSE far-UV spectroscopy of the nearby metal-deficient (Zo/8) cometary Blue Compact Dwarf galaxy Mrk59 have been used to investigate element abundances in its interstellar medium. The lack of diffuse H2 (N(H2)<10e15 cm-2) is due to the…

Astrophysics · Physics 2007-05-23 A. Lecavelier des Etangs , T. X. Thuan , Y. I. Izotov