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Extra-Nuclear Starbursts: Young Luminous Hinge Clumps In
Extra-Nuclear Starbursts: Young Luminous Hinge Clumps in Interacting Galaxies Beverly J. Smith1, Roberto Soria2, Curtis Struck3, Mark L. Giroux1, Douglas A. Swartz4, and Mihoko Yukita5 ABSTRACT Hinge clumps are luminous knots of star formation near the base of tidal features in some interacting galaxies. We use archival Hubble Space Telescope UV/optical/IR images and Chandra X-ray maps along with GALEX UV, Spitzer IR, and ground-based optical/near-IR images to investigate the star forming properties in a sample of 12 hinge clumps in five interacting galaxies. 1 The most extreme of these hinge clumps have star formation rates of 1 9 M yr− , comparable to or larger than the ‘overlap’ region of intense star formation between− the⊙ two disks of the colliding galaxy system the Antennae. In the HST images, we have found remarkably large and luminous sources at the centers of these hinge clumps. These objects are much larger and more luminous than typical ‘super-star clusters’ in interacting galaxies, and are sometimes embedded in a linear ridge of fainter star clusters, consistent with star formation along a narrow caustic. These central sources have diameters of 70 pc, compared to 3 pc in ‘ordinary’ super-star clusters. ∼ ∼ Their absolute I magnitudes range from MI 12.2 to 16.5, thus if they are individual star clusters they would lie near the top of the ‘super∼ − star cluster’− luminosity function of star clusters. These sources may not be individual star clusters, but instead may be tightly packed groups of clusters that are blended together in the HST images. -
Cetus - the Whale
May 18 2021 Cetus - The Whale Observed: No Object Her Type Mag Alias/Notes IC 5384 Non-Existent NGC 7813 MCG -2-1-16 MK 936 IRAS 15-1215 PGC 287 IC 1528 Non-Existent NGC 7826 H29-8 Non-Existent Asterism IC 1533 Non-Existent NGC 34 Non-Existent NGC 17 NGC 58 Non-Existent NGC 47 PGC 967 MCG -1-1-55 IRAS 119-726 NGC 54 Glxy SB(r)a? 14.6 MCG -1-1-60 PGC 1011 NGC 59 Glxy SA(rs)0-: 13.1 ESO 539-4 MCG -4-1-26 PGC 1034 NGC 62 Glxy (R)SB(r)a: 12.3 MCG -2-1-43 IRAS 145-1345 PGC 1125 NGC 64 Glxy SB(s)bc 14 MCG -1-1-68 IRAS 149-706 PGC 1149 IC 5 Glxy E 14.8 MCG -2-1-47 IRAS 148-951 PGC 1145 NGC 73 Glxy SAB(rs)bc: 13.5 MCG -3-1-26 PGC 1211 NGC 65 Glxy SAB(rs)0-: 14.4 ESO 473-10A MCG -4-2-1 PGC 1229 NGC 66 Glxy SB(r)b pec 14.2 ESO 473-10 MCG -4-2-2 IRAS 165-2312 PGC 1236 IC 9 Glxy Sb(r) 16.1 MCG -2-2-1 IRAS 171-1423 PGC 1271 NGC 77 Glxy SA0-: 15.7 ESO 473-15 PGC 1290 NGC 102 Glxy S0/a 14.4 MCG -2-2-11 PGC 1542 NGC 107 Glxy Sbc 14.6 MCG -2-2-14 PGC 1606 NGC 111 Non-Existent NGC 113 Glxy SA0-: 13.5 MCG -1-2-16 PGC 1656 NGC 114 Glxy SB(rs)0: 14.7 UGC 259 MCG 0-2-27 MK 946 CGCG 383-14 KUG 24-20A PGC 1660 NGC 116 Non-Existent MCG -1-2-17 PGC 1671 NGC 117 Glxy S0+: sp 15.3 MCG 0-2-29 CGCG 383-15 PGC 1674 NGC 118 Glxy I0? 14.8 UGC 264 MCG 0-2-32 MK 947 CGCG 383-16 UM244 3ZW9 IRAS 247-203 PGC 1678 NGC 120 Glxy SB0^: 14.4 UGC 267 MCG 0-2-33 CGCG 383-17 PGC 1693 NGC 122 Non-Existent NGC 123 Non-Existent NGC 124 Glxy SA(s)c 13.7 UGC 271 MCG 0-2-38 CGCG 383-18 IRAS 253-205 PGC 1715 IC 15 Non-Existent IC 16 Glxy E? 14.7 MCG -2-2-17 IRAS 255-1322 PGC 1730 IC 17 -
190 Index of Names
Index of names Ancora Leonis 389 NGC 3664, Arp 005 Andriscus Centauri 879 IC 3290 Anemodes Ceti 85 NGC 0864 Name CMG Identification Angelica Canum Venaticorum 659 NGC 5377 Accola Leonis 367 NGC 3489 Angulatus Ursae Majoris 247 NGC 2654 Acer Leonis 411 NGC 3832 Angulosus Virginis 450 NGC 4123, Mrk 1466 Acritobrachius Camelopardalis 833 IC 0356, Arp 213 Angusticlavia Ceti 102 NGC 1032 Actenista Apodis 891 IC 4633 Anomalus Piscis 804 NGC 7603, Arp 092, Mrk 0530 Actuosus Arietis 95 NGC 0972 Ansatus Antliae 303 NGC 3084 Aculeatus Canum Venaticorum 460 NGC 4183 Antarctica Mensae 865 IC 2051 Aculeus Piscium 9 NGC 0100 Antenna Australis Corvi 437 NGC 4039, Caldwell 61, Antennae, Arp 244 Acutifolium Canum Venaticorum 650 NGC 5297 Antenna Borealis Corvi 436 NGC 4038, Caldwell 60, Antennae, Arp 244 Adelus Ursae Majoris 668 NGC 5473 Anthemodes Cassiopeiae 34 NGC 0278 Adversus Comae Berenices 484 NGC 4298 Anticampe Centauri 550 NGC 4622 Aeluropus Lyncis 231 NGC 2445, Arp 143 Antirrhopus Virginis 532 NGC 4550 Aeola Canum Venaticorum 469 NGC 4220 Anulifera Carinae 226 NGC 2381 Aequanimus Draconis 705 NGC 5905 Anulus Grahamianus Volantis 955 ESO 034-IG011, AM0644-741, Graham's Ring Aequilibrata Eridani 122 NGC 1172 Aphenges Virginis 654 NGC 5334, IC 4338 Affinis Canum Venaticorum 449 NGC 4111 Apostrophus Fornac 159 NGC 1406 Agiton Aquarii 812 NGC 7721 Aquilops Gruis 911 IC 5267 Aglaea Comae Berenices 489 NGC 4314 Araneosus Camelopardalis 223 NGC 2336 Agrius Virginis 975 MCG -01-30-033, Arp 248, Wild's Triplet Aratrum Leonis 323 NGC 3239, Arp 263 Ahenea -
ARP Peculiar Galaxies
October 25, 2012 ARP Peculiar Galaxies Observed: No ARP Object Con Type Mag Alias/Notes 249 PGC 25 Peg Glxy Double System 15 UGC 12891 MCG 4-1-7 CGCG 477-37 CGCG 478-9 4ZW177 VV 186 ARP 249 112 PGC 111 Peg Glxy S 16.6 MCG 5-1-26 VV 226 ARP 112 130 PGC 178 Peg Glxy SB 15.3 UGC 1 MCG 3-1-16 CGCG 456-18 VV 263 ARP 130 130 PGC 177 Peg Glxy S 14.9 UGC 1 MCG 3-1-15 CGCG 456-18 VV 263 ARP 130 51 PGC 475 Cet Glxy 15 ESGC 144 NGC 7828 Cet Glxy Ring B 14.4 MCG -2-1-25 VV 272 ARP 144 IRAS 38-1341 PGC 483 144 NGC 7829 Cet Glxy Ring A 14.6 MCG -2-1-24 VV 272 ARP 144 PGC 488 146 PGC 510 Cet Glxy Ring A 16.3 ANON 4-6A 146 PGC 509 Cet Glxy Ring B 16.3 ANON 4-6B 246 NGC 7837 Psc Glxy Sb 15.4 MCG 1-1-35 CGCG 408-34 ARP 246 IRAS 42+804 PGC 516 246 NGC 7838 Psc Glxy Sb 15.3 MCG 1-1-36 CGCG 408-34 ARP 246 PGC 525 256 PGC 1224 Cet Glxy SB(s)b pec? 14.8 MCG -2-1-51 VV 352 ARP 256 8ZW18 256 PGC 1221 Cet Glxy SB(s)c pec 13.6 MCG -2-1-52 VV 352 ARP 256 IRAS 163-1039 8ZW18 35 PGC 1431 Psc Glxy S 15.5 KUG 19-16 35 PGC 1434 Psc Glxy SB 14.7 UGC 212 MCG 0-2-14 MCG 0-2-15 CGCG 383-4 UM231 VV 257 ARP 35 IRAS 198-134 201 PGC 1503 Psc Glxy Disrupted 15.4 UGC 224 MCG 0-2-18 CGCG 383-6 VV 38 ARP 201 201 PGC 1504 Psc Glxy L 15.4 UGC 224 MCG 0-2-19 VV 38 ARP 201 100 IC 18 Cet Glxy Sb 15.4 MCG -2-2-23 VV 234 ARP 100 8ZW25 PGC 1759 100 IC 19 Cet Glxy E 15 MCG -2-2-24 MK 949 PGC 1762 19 NGC 145 Cet Glxy SB(s)dm 13.2 MCG -1-2-27 ARP 19 IRAS 292-525 PGC 1941 282 IC 1559 And Glxy SAB0 pec: 14 MCG 4-2-34 MK 341 CGCG 479-44 ARP 282 PGC 2201 127 IC 1563 Cet Glxy S0 pec sp 13.6 MCG -
An Integrated Spectrophotometric Survey of Nearby Star-Forming
Accepted to ApJS An Integrated Spectrophotometric Survey of Nearby Star-Forming Galaxies John Moustakas1 & Robert C. Kennicutt, Jr.1,2 ABSTRACT We present integrated optical spectrophotometry for a sample of 417 nearby galaxies. Our observations consist of spatially integrated, S/N=10 100 spec- − troscopy between 3600 and 6900 A˚ at 8 A˚ FWHM resolution. In addition, we ∼ present nuclear (2′′.5 2′′.5) spectroscopy for 153 of these objects. Our sample × targets a diverse range of galaxy types, including starbursts, peculiar galaxies, interacting/merging systems, dusty, infrared-luminous galaxies, and a significant number of normal galaxies. We use population synthesis to model and subtract the stellar continuum underlying the nebular emission lines. This technique results in emission-line measurements reliably corrected for stellar absorption. Here, we present the integrated and nuclear spectra, the nebular emission-line fluxes and equivalent widths, and a comprehensive compilation of ancillary data available in the literature for our sample. In a series of subsequent papers we use these data to study optical star-formation rate indicators, nebular abundance di- agnostics, the luminosity-metallicity relation, the dust properties of normal and starburst galaxies, and the star-formation histories of infrared-luminous galaxies. Subject headings: atlases — galaxies: fundamental parameters — galaxies: ISM arXiv:astro-ph/0511729v1 25 Nov 2005 — galaxies: starburst — galaxies: stellar content — techniques: spectroscopic 1. INTRODUCTION Integrated -
Effects of Rotation Arund the Axis on the Stars, Galaxy and Rotation of Universe* Weitter Duckss1
Effects of Rotation Arund the Axis on the Stars, Galaxy and Rotation of Universe* Weitter Duckss1 1Independent Researcher, Zadar, Croatia *Project: https://www.svemir-ipaksevrti.com/Universe-and-rotation.html; (https://www.svemir-ipaksevrti.com/) Abstract: The article analyzes the blueshift of the objects, through realized measurements of galaxies, mergers and collisions of galaxies and clusters of galaxies and measurements of different galactic speeds, where the closer galaxies move faster than the significantly more distant ones. The clusters of galaxies are analyzed through their non-zero value rotations and gravitational connection of objects inside a cluster, supercluster or a group of galaxies. The constant growth of objects and systems is visible through the constant influx of space material to Earth and other objects inside our system, through percussive craters, scattered around the system, collisions and mergers of objects, galaxies and clusters of galaxies. Atom and its formation, joining into pairs, growth and disintegration are analyzed through atoms of the same values of structure, different aggregate states and contiguous atoms of different aggregate states. The disintegration of complex atoms is followed with the temperature increase above the boiling point of atoms and compounds. The effects of rotation around an axis are analyzed from the small objects through stars, galaxies, superclusters and to the rotation of Universe. The objects' speeds of rotation and their effects are analyzed through the formation and appearance of a system (the formation of orbits, the asteroid belt, gas disk, the appearance of galaxies), its influence on temperature, surface gravity, the force of a magnetic field, the size of a radius. -
A Comparative Study of Knots of Star Formation in Interacting Vs. Spiral
A Comparative Study of Knots of Star Formation in Interacting vs. Spiral Galaxies Beverly J. Smith1, Javier Zaragoza-Cardiel2, Curtis Struck3, Susan Olmsted1, Keith Jones1 ABSTRACT Interacting galaxies are known to have higher global rates of star formation on average than normal galaxies, relative to their stellar masses. Using UV and IR photometry combined with new and published Hα images, we have compared the star formation rates of ∼700 star forming complexes in 46 nearby interacting galaxy pairs with those of regions in 39 normal spiral galaxies. The interacting galaxies have proportionally more regions with high star formation rates than the spirals. The most extreme regions in the interacting systems lie at the intersections of spiral/tidal structures, where gas is expected to pile up and trigger star formation. Published Hubble Tele- scope images show unusually large and luminous star clusters in the highest luminosity regions. The star formation rates of the clumps correlate with measures of the dust attenuation, con- sistent with the idea that regions with more interstellar gas have more star formation. For the clumps with the highest star formation rates, the apparent dust attenuation is consistent with the Calzetti starburst dust attenuation law. This suggests that the high luminosity regions are dominated by a central group of young stars surrounded by a shell of clumpy interstellar gas. In contrast, the lower luminosity clumps are bright in the UV relative to Hα, suggesting either a high differential attenuation between the ionized gas and the stars, or a post-starburst population bright in the UV but faded in Hα. -