[ITAL]HUBBLE SPACE TELESCOPE[/ITAL][ITAL]Hubble Space Telescope[/ITAL] Observations of Dust and Star-forming Regions in the Ocular Galaxy IC 2163 and Its Spiral Companion NGC 2207

2001 ◽  
Vol 121 (1) ◽  
pp. 182-197 ◽  
Author(s):  
Debra Meloy Elmegreen ◽  
Michele Kaufman ◽  
Bruce G. Elmegreen ◽  
Elias Brinks ◽  
Curtis Struck ◽  
...  
Keyword(s):  
Hubble Space Telescope ◽  
Space Telescope ◽  
Star Forming ◽  
Star Forming Regions

scholarly journals Gemini IFU, VLA, and HST observations of the OH Megamaser Galaxy IRAS17526 + 3253★

2019 ◽  
Vol 486 (3) ◽  
pp. 3350-3367 ◽  
Author(s):  
Dinalva A Sales ◽  
A Robinson ◽  
R A Riffel ◽  
T Storchi-Bergmann ◽  
J F Gallimore ◽  
...  
Keyword(s):  
Star Formation ◽  
Hubble Space Telescope ◽  
Formation Rate ◽  
Line Emission ◽  
Ionization Source ◽  
Space Telescope ◽  
Star Forming ◽  
Star Forming Regions ◽  
Major Merger ◽  
Field Unit

AbstractWe present a multiwavelength study of the OH megamaser galaxy IRAS17526 + 3253, based on new Gemini multi-object spectrograph integral field unit (GMOS/IFU) observations, Hubble Space Telescope F814W, and H α + [N ii] images, and archival 2MASS and 1.49 GHz VLA data. The Hubble Space Telescope(HST) images clearly reveal a mid-to-advanced stage major merger whose northwestern and southeastern nuclei have a projected separation of ∼8.5 kpc. Our HST/H α + [N ii] image shows regions of ongoing star formation across the envelope on ∼10 kpc scales, which are aligned with radio features, supporting the interpretation that the radio emission originates from star-forming regions. The measured H α luminosities imply that the unobscured star formation rate (SFR) is ∼10–30 M⊙ yr−1. The GMOS/IFU data reveal two structures in northwestern separated by 850 pc and by a discontinuity in the velocity field of ∼ 200 km s−1. We associate the blueshifted and redshifted components with, respectively, the distorted disc of northwestern and tidal debris, possibly a tail originating in southeastern. Star formation is the main ionization source in both components, which have SFRs of ∼2.6–7.9 M⊙ yr−1 and ∼1.5–4.5 M⊙ yr−1, respectively. Fainter line emission bordering these main components is consistent with shock ionization at a velocity ∼200 km s−1 and may be the result of an interaction between the tidal tail and the northwestern galaxy’s disc. IRAS17526 + 3253 is one of only a few systems known to host both luminous OH and H2O masers. The velocities of the OH and H2O maser lines suggest that they are associated with the northwestern and southeastern galaxies, respectively (Martin et al.; Wagner).

Multiwavelength analysis of OH Megamaser galaxies: The case of IRAS11506-3851

2020 ◽  
Vol 15 (S359) ◽  
pp. 347-349
Author(s):  
Carpes P. Hekatelyne ◽  
Thaisa Storchi-Bergmann
Keyword(s):  
Active Galactic Nuclei ◽  
Hubble Space Telescope ◽  
Galactic Nuclei ◽  
Large Array ◽  
Very Large Array ◽  
Star Forming ◽  
Star Forming Regions ◽  
Field Unit ◽  
Mixed Transition ◽  
Integral Field

AbstractWe present Multi-Object Spectrograph (GMOS) Integral Field Unit (IFU), Hubble Space Telescope (HST) and Very Large Array (VLA) observations of the inner kpc of the OH Megamaser galaxy IRAS 11506-3851. In this work we discuss the kinematics and excitation of the gas as well as its radio emission. The HST images reveal an isolated spiral galaxy and the combination with the GMOS-IFU flux distributions allowed us to identify a partial ring of star-forming regions surrounding the nucleus with a radius of ≍500 pc. The emission-line ratios and excitation map reveal that the region inside the ring present mixed/transition excitation between those of Starbursts and Active Galactic Nuclei (AGN), while regions along the ring are excited by Starbursts. We suggest that we are probing a buried or fading AGN that could be both exciting the gas and originating an outflow.

scholarly journals Massive Star Formation in the Ultraviolet Observed with the Hubble Space Telescope

Galaxies ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 13 ◽  
Author(s):  
Claus Leitherer
Keyword(s):  
Star Formation ◽  
Massive Star ◽  
Hubble Space Telescope ◽  
Spectral Synthesis ◽  
Star Clusters ◽  
Large Magellanic Cloud ◽  
H Ii Regions ◽  
Massive Star Formation ◽  
Space Telescope ◽  
Star Forming

Spectroscopic observations of a massive star formation in the ultraviolet and their interpretation are reviewed. After a brief historical retrospective, two well-studied resolved star clusters and the surrounding H II regions are introduced: NGC 2070 in the Large Magellanic Cloud and NGC 604 in M33. These regions serve as a training set for studies of more distant clusters, which can no longer be resolved into individual stars. Observations of recently formed star clusters and extended regions in star-forming galaxies in the nearby universe beyond the Local Group are presented. Their interpretation relies on spectral synthesis models. The successes and failures of such models are discussed, and future directions are highlighted. I present a case study of the extraordinary star cluster and giant H II region in the blue compact galaxy II Zw 40. The review concludes with a preview of two upcoming Hubble Space Telescope programs: ULLYSES, a survey of massive stars in nearby galaxies, and CLASSY, a study of massive star clusters in star-forming galaxies.

scholarly journals Si and Fe Depletion in Galactic Star‐forming Regions Observed by theSpitzer Space Telescope

2008 ◽  
Vol 682 (1) ◽  
pp. 416-433 ◽  
Author(s):  
Yoko Okada ◽  
Takashi Onaka ◽  
Takashi Miyata ◽  
Yoshiko K. Okamoto ◽  
Itsuki Sakon ◽  
...  
Keyword(s):  
Space Telescope ◽  
Star Forming ◽  
Star Forming Regions

scholarly journals Star-forming galaxies at z≈ 8-9 from Hubble Space Telescope/WFC3: implications for reionization

2011 ◽  
Vol 414 (2) ◽  
pp. 1455-1466 ◽  
Author(s):  
Silvio Lorenzoni ◽  
Andrew J. Bunker ◽  
Stephen M. Wilkins ◽  
Elizabeth R. Stanway ◽  
Matt J. Jarvis ◽  
...  
Keyword(s):  
Hubble Space Telescope ◽  
Space Telescope ◽  
Star Forming

Hubble Space Telescope imaging of the central star forming region in NGC 1140 [SUP]1[/SUP]

1994 ◽  
Vol 108 ◽  
pp. 84 ◽  
Author(s):  
Deidre A. Hunter ◽  
Robert W. O'Connell ◽  
John S., III Gallagher
Keyword(s):  
Hubble Space Telescope ◽  
Central Star ◽  
Space Telescope ◽  
Star Forming

scholarly journals The OH Megamaser galaxy IRAS11506−3851: an AGN and star formation revealed by multiwavelength observations

2020 ◽  
Vol 498 (2) ◽  
pp. 2632-2644
Author(s):  
C Hekatelyne ◽  
Rogemar A Riffel ◽  
Thaisa Storchi-Bergmann ◽  
Preeti Kharb ◽  
Andrew Robinson ◽  
...  
Keyword(s):  
Active Galactic Nucleus ◽  
Velocity Dispersion ◽  
Hubble Space Telescope ◽  
Present Stage ◽  
Low Velocity ◽  
Very Large Array ◽  
Star Forming ◽  
Star Forming Regions ◽  
Field Unit ◽  
Integral Field

ABSTRACT We present Gemini Multi-Object Spectrograph (GMOS) Integral Field Unit (IFU), Hubble Space Telescope (HST), and Very Large Array (VLA) observations of the OH Megamaser (OHM) galaxy IRAS 11506−3851. The HST images reveal an isolated spiral galaxy and the combination with the GMOS-IFU flux distributions and VLA data allow us to identify a partial ring of star-forming regions surrounding the nucleus with a radius of ≈ 500 pc. While this ring shows starburst excitation and low velocity dispersion, the region internal to the ring shows higher excitation and velocity dispersion values, with values increasing towards its borders at ≈ 240 pc from the nucleus, resembling a projected bubble. The enhanced excitation and velocity dispersion of this bubble surrounds a 8.5-GHz radio emission structure, supporting its origin in a faint active galactic nucleus (AGN) that is mostly shocking the surrounding gas via a plasma ejection seen in radio at the present stage. This is the fourth of the 5 OHM galaxies we have studied so far (from our sample of 15 OHM) for which GMOS-IFU data indicate the presence of a previously unknown faint AGN at the nucleus, consistent with the hypothesis that OHM galaxies harbour recently triggered AGN.

scholarly journals Hubble Space Telescope imaging survey of sub-mJy star-forming galaxies — I. Morphologies at z ∼ 0.2

2000 ◽  
Vol 317 (2) ◽  
pp. L29-L33 ◽  
Author(s):  
Stephen Serjeant ◽  
Bahram Mobasher ◽  
Carlotta Gruppioni ◽  
Seb Oliver
Keyword(s):  
Hubble Space Telescope ◽  
Space Telescope ◽  
Star Forming

scholarly journals COSMIC REIONIZATION AND EARLY STAR-FORMING GALAXIES: A JOINT ANALYSIS OF NEW CONSTRAINTS FROM PLANCK AND THE HUBBLE SPACE TELESCOPE

2015 ◽  
Vol 802 (2) ◽  
pp. L19 ◽  
Author(s):  
Brant E. Robertson ◽  
Richard S. Ellis ◽  
Steven R. Furlanetto ◽  
James S. Dunlop
Keyword(s):  
Hubble Space Telescope ◽  
Joint Analysis ◽  
Space Telescope ◽  
Star Forming
Sign in / Sign up

Export Citation Format

Share Document