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Related papers: A Neighboring Dwarf Irregular Galaxy Hidden by the…

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HIZSS3 is an H I source in the Zone of Avoidance. Its radio characteristics are consistent with it being nearby (~ 1.8 Mpc) low-mass dwarf irregular (dIm) galaxy. It contains a modest H II region, but its stellar population has not been…

Astrophysics · Physics 2009-11-10 David R. Silva , Philip Massey , Kathleen DeGioia-Eastwood , P. A. Henning

The discovery of a previously unknown 21cm HI line source identified as an ultra-compact high velocity cloud in the ALFALFA survey is reported. The HI detection is barely resolved by the Arecibo 305m telescope ~4' beam and has a narrow HI…

The nearby galaxy HIZSS003 was recently discovered during a blind HI survey of the zone of avoidance (Henning et al. 2000). Follow up VLA as well as optical and near-IR imaging and spectroscopy (Massey et al. 2003; Silva et al. 2005)…

Astrophysics · Physics 2009-11-10 Ayesha Begum , Jayaram N. Chengalur , I. D. Karachentsev , M. E. Sharina

Sensitive 21cm HI line observations were performed for 23 dwarf members and possible members of the nearby M81 group of galaxies, including five objects of a clustering of extremely low-surface brightness objects of unknown nature. With the…

Astrophysics · Physics 2007-05-23 W. van Driel , R. C. Kraan-Korteweg , B. Binggeli , W. K. Huchtmeier

We examine the HI content and environment of all of the Local Group dwarf galaxies (M_tot < 10^10 M_solar), including the numerous newly discovered satellites of the Milky Way and M31. All of the new dwarfs, with the exception of Leo T,…

Astrophysics of Galaxies · Physics 2016-06-02 Jana Grcevich , Mary E Putman

We present a sample of 115 very low optical surface brightness, highly extended, HI-rich galaxies carefully selected from the ALFALFA survey that have similar optical absolute magnitudes, surface brightnesses, and radii to recently…

A sample of 69 galaxies with radial velocities less than 2500 km/s was selected from the HI Parkes All Sky Survey (HIPASS) to deduce details about star formation in nearby disk galaxies selected with no bias to optical surface brightness…

Astrophysics · Physics 2009-11-11 J. F. Helmboldt , R. A. M. Walterbos , G. D. Bothun , K. O'Neil

We report the discovery of Corvus A, a low-mass, gas-rich galaxy at a distance of approximately 3.5 Mpc, identified in DR10 of the Dark Energy Camera Legacy Imaging Survey during the initial phase of our ongoing SEmi-Automated Machine…

A sample of 69 galaxies with radial velocities less than 2500 km/s was selected from the HI Parkes All Sky Survey (HIPASS) and imaged in broad band B and R and narrow band H-alpha to deduce details about star formation in nearby disk…

Astrophysics · Physics 2009-11-10 J. F. Helmboldt , R. A. M. Walterbos , G. D. Bothun , K. O'Neil , W. J. G. de Blok

We have carried out a survey searching for H alpha emitting galaxies at z~0.24 using a narrow band filter tuned with the redshifted line. The total sky area covered was 0.19 square degrees within the redshift range 0.228 to 0.255 in a set…

Astrophysics · Physics 2009-11-07 S. Pascual , J. Gallego , A. Aragon-Salamanca , J. Zamorano

The Milky Way contains thousands of H II region candidates identified by their characteristic mid-infrared morphology, but lacking detections of ionized gas tracers such as radio continuum or radio recombination line emission. These targets…

Astrophysics of Galaxies · Physics 2021-03-17 William P. Armentrout , Loren D. Anderson , Trey V. Wenger , Dana S. Balser , Thomas M. Bania

The Arecibo Galaxy Environment Survey (AGES) has detected a nearby HI source at a heliocentric velocity of +363 km/s . The object was detected through its neutral hydrogen emission and has an obvious possible optical counterpart in Sloan…

Astrophysics of Galaxies · Physics 2015-06-19 R. Taylor , R. F. Minchin , H. Herbst , R. Smith

We report the cumulative results of an on-going near-infrared search for redshifted H-alpha emission from normal galaxies at z>2. An infrared search reduces the bias due to reddening. Using narrow-band imaging with the Near Infrared Camera…

Astrophysics · Physics 2009-10-30 H. Teplitz , M. Malkan , I. S. McLean

We present near-infrared integral-field spectroscopic observations targeting H$\alpha$ in eight sub-millimeter galaxies (SMGs) at $z$=1.3-2.5 using VLT/SINFONI, obtaining significant detections for six of them. The star formation rates…

We report the discovery of a 20-kpc-sized H{\alpha} emission in SDSS J083803.68+540642.0, a ringed dwarf galaxy (M$_V$ = -17.89 mag) hosting an accreting intermediate-mass black hole at z=0.02957. Analysis of the HST images indicates that…

Astrophysics of Galaxies · Physics 2017-03-15 Wen-Juan Liu , Lei Qian , Xiao-Bo Dong , Ning Jiang , Paulina Lira , Zheng Cai , Feige Wang , Jinyi Yang , Ting Xiao , Minjin Kim

We present the serendipitous ALMA detection of a faint submillimeter galaxy (SMG) lensed by a foreground z~1 galaxy. By optimizing the source detection to deblend the system, we accurately build the full spectral energy distribution of the…

We identify 814 discrete HI clouds in 40 dwarf irregular galaxies from the LITTLE THINGS survey using an automated cloud-finding algorithm. The cloud masses range from ~10^3 to 10^7 Msolar, have a surface density averaged over all of the…

Astrophysics of Galaxies · Physics 2019-06-05 Deidre A. Hunter , Bruce G. Elmegreen , Clara L. Berger

The lack of success of Lyman-alpha searches for high-redshift (z>2) field galaxies may be due to extinction by dust, suggesting that surveys based on lines of longer wavelength, particularly H-alpha, may be more effective. To test the dust…

Astrophysics · Physics 2015-06-24 A. J. Bunker , S. J. Warren , P. C. Hewett , D. L. Clements

Neutral hydrogen observations with the Westerbork Synthesis Radio Telescope are presented for a sample of 73 late-type dwarf galaxies. These observations are part of the WHISP project (Westerbork HI Survey of Spiral and Irregular Galaxies).…

Astrophysics · Physics 2009-11-07 R. A. Swaters , T. S. van Albada , J. M. van der Hulst , R. Sancisi

The IRAM interferometer has been used to detect the submm source HDF 850.1 found by Hughes et al. (1998) in the Hubble Deep Field. The flux density measured at 1.3mm is 2.2 mJy, in agreement with the flux density measured at the JCMT. The…

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