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Related papers: Star Forming Regions in Cassiopeia

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We investigate the star formation occurring in the Planck Galactic cold clump PGCC 120.69+2.66. Near-infrared JHKs images and K-band spectroscopy obtained with NOTCam at the Nordic Optical Telescope complemented with archive data are used…

Astrophysics of Galaxies · Physics 2024-11-08 Anlaug Amanda Djupvik , João L. Yun , Fernando Comerón

We present a multiwavelength study of star formation within the nearby M101 Group, including new deep H$\alpha$ imaging of M101 and its two companions. We perform a statistical analysis of the H$\alpha$ to FUV flux ratios in HII regions…

Astrophysics of Galaxies · Physics 2017-12-27 Aaron E. Watkins , J. Christopher Mihos , Paul Harding

At $z\sim2$, star-formation activity is thought to be high even in high-density environments such as galaxy clusters and proto-clusters. One of the critical but outstanding issues is if structural growth of star-forming galaxies can differ…

We present deep imaging and spectroscopic observations of the z = 1.195 quasar 3C 190 and its immediate environment. The quasar is surrounded by an asymmetric low-surface-brightness envelope in which there are also several galaxies with…

Astrophysics · Physics 2009-11-06 Alan Stockton , Susan E. Ridgway

Using the Purple Mountain Observatory Delingha (PMODLH) 13.7 m telescope, we report a 96-square-degree 12CO/13CO/C18O mapping observation toward the Galactic region of l = [139.75, 149.75]$^\circ$, b = [-5.25, 5.25]$^\circ$. The molecular…

Astrophysics of Galaxies · Physics 2017-07-12 Xinyu Du , Ye Xu , Ji Yang , Yan Sun

The Orion Nebula is one of the most frequently observed nearby (<1 kiloparsec) star forming regions and, consequently, the subject of a large bibliography of observations and interpretation. The summary in this chapter is bounded spatially…

Astrophysics · Physics 2008-12-09 August Muench , Konstantin Getman , Lynne Hillenbrand , Thomas Preibisch

We report our new results from wide-field surveys of Herbig-Haro (HH) objects in the nearby star forming regions. The surveys covered approximately 56 degree in Perseus, Taurus, Orion, Monoceros, and other regions. Using refined techniques,…

Astrophysics · Physics 2007-05-23 Jun Yan , Hongchi Wang , Min Wang , Licai Deng , Ji Yang , Jiansheng Chen

We present FUSE spectroscopy and supporting data for star-forming regions in nearby galaxies, to examine their massive-star content and explore the use of abundance and population indicators in this spectral range for high-redshift…

Astrophysics · Physics 2009-11-10 William C. Keel , Jay B. Holberg , Patrick M. Treuthardt

NGC 5128 (Cen A) is the nearest giant elliptical galaxy and one of the brightest extragalactic radio sources in the sky, boasting a prominent dust lane and jets emanating from its nuclear supermassive black hole. In this paper, we construct…

By observing radiation-affected gas in the Cepheus B molecular cloud we probe whether the sequential star formation in this source is triggered by the radiation from newly formed stars. We used the dual band receiver GREAT onboard SOFIA to…

Astrophysics of Galaxies · Physics 2015-06-04 B. Mookerjea , V. Ossenkopf , O. Ricken , R. Guesten , U. U. Graf , K. Jacobs , C. Kramer , R. Simon , J. Stutzki

We use Hubble Space Telescope near-IR grism spectroscopy to examine the H-beta line strengths of 260 star-forming galaxies in the redshift range 1.90 < z < 2.35. We show that at these epochs, the H-beta star formation rate (SFR) is a factor…

This paper presents optical and H-alpha imaging for a large sample of LSB galaxies selected from the PSS-II catalogs (Schombert et. al 1992). As noted in previous work, LSB galaxies span a range of luminosities (-10 > M_V > -20) and sizes…

Cosmology and Nongalactic Astrophysics · Physics 2014-05-28 James Schombert , Tamela Maciel , Stacy McGaugh

Massive galaxies in the early Universe have been shown to be forming stars at surprisingly high rates. Prominent examples are dust-obscured galaxies which are luminous when observed at sub-millimeter (sub-mm) wavelengths and which may be…

We report four trigonometric parallaxes for high-mass star-forming regions within 4 kpc of the Galactic center. These measurements were made with the VLBA as part of the BeSSeL Survey. By associating these sources kinematically with…

Astrophysics of Galaxies · Physics 2015-06-18 A. Sanna , M. J. Reid , K. M. Menten , T. M. Dame , B. Zhang , M. Sato , A. Brunthaler , L. Moscadelli , K. Immer

Star-forming regions that are visible at 3.6 microns and Halpha but not in the u,g,r,i,z bands of the Sloan Digital Sky survey (SDSS), are measured in five nearby spiral galaxies to find extinctions averaging ~3.8 mag and stellar masses…

Using a recently-developed technique to estimate gas temperatures ($T_\textrm{SF}$) in star-forming regions from large photometric surveys, we propose a diagram, analogous to the Hertzsprung-Russell diagram for individual stars, to probe…

By means of different physical mechanisms, the expansion of HII regions can promote the formation of new stars of all masses. RCW 120 is a nearby Galactic HII region where triggered star formation occurs. This region is well-studied - there…

Spectrophotometric distances in the K band have been reported by different authors for a number of obscured Galactic HII regions. Almost 50% of them show large discrepancies compared to the classical method using radial velocities measured…

Astrophysics of Galaxies · Physics 2015-05-28 F. Navarete , E. Figueredo , A. Damineli , A. P. Moisés , R. D. Blum , P. S. Conti

For lensed galaxy SGAS J111020.0+645950.8 at redshift z=2.481, which is magnified by a factor of 28 +- 8, we analyze the morphology of star formation as traced by rest-frame ultraviolet emission, in both the highly-magnified source plane,…

Astrophysics of Galaxies · Physics 2017-07-19 J. R. Rigby , T. L. Johnson , K. Sharon , K. Whitaker , M. D. Gladders , M. Florian , J. Lotz , M. Bayliss , E. Wuyts

We present near-infrared spectroscopy and 1 mm line and continuum observations of a recently identified site of high mass star formation likely to be located in the Central Molecular Zone near Sgr C. Located on the outskirts of the massive…