Results 41 to 50 of about 9,582 (206)

The effect of massive binaries on stellar populations and supernova progenitors

, 2007
We compare our latest single and binary stellar model results from the Cambridge STARS code to several sets of observations. We examine four stellar population ratios, the number of blue to red supergiants, the number of Wolf-Rayet stars to O supergiants,
Belczynski, Brandt, Cameron, Cantiello, Cappellaro, Cappellaro, Chiosi, Christopher A. Tout, Crowther, Crowther, de Donder, de Donder, de Jager, Deupree, Dray, Dray, Eggenberger, Eggleton, Eggleton, Eldridge, Eldridge, Eldridge, Ferguson, Hansen, Heger, Heger, Heger, Heger, Hirschi, Hurley, Hurley, Izzard, Izzard, Izzard, John J. Eldridge, Kotak, Kroupa, Kudritzki, Langer, Livio, Maeder, Maeder, Massey, Massey, Meynet, Meynet, Meynet, Meynet, Meynet, Nugis, Paczynski, Pastorello, Petrovic, Petrovic, Podsiadlowski, Podsiadlowski, Podsiadlowski, Pols, Popov, Prantzos, Robert G. Izzard, Sills, Smartt, Smartt, Smith, Turatto, Van Dyk, Vanbeveren, Vanbeveren, Vink, Vink, Vázquez, Wellstein, Woosley, Young   +74 more
core   +1 more source

Red Supergiants in NGC 300 [PDF]

Symposium - International Astronomical Union, 1986
Red supergiant stars that are members of the nearby Sc galaxy NGC 300 have been isolated by spectrophotometry and infrared photometry from a blink comparator survey of red stars in the general field of this highly resolved stellar system. Our spectroscopic criterion is the strength of the CaII triplet near λ8500 which is more than twice as strong in ...
J.A. Graham, Roberta M. Humphreys
openaire   +1 more source

PRELIMINARY STUDY OF RED SUPERGIANT RM_1-667 IN THE LARGE MAGELLANIC CLOUD

Odessa Astronomical Publications, 2012
The observed lines of hydrogen and another strong lines in the spectrum of RM_1-667 (red region of spectra, 5900-7100 Å, spectral type is K7 I) are discussed.
V. F. Gopka, A. Shavrina, S. Vasilyeva, A. Yushchenko, S. Andrievsky, V. Yushchenko   +5 more
doaj   +1 more source

The Optical to Infrared Extinction Law of Magellanic Clouds Based on Red Supergiants and Classical Cepheids

The Astrophysical Journal, 2023
Precise interstellar dust extinction laws are important to infer the intrinsic properties of reddened objects and correctly interpret observations. In this work, we attempt to measure the optical–infrared extinction laws of the Large and Small Magellanic
Shu Wang, Xiaodian Chen
doaj   +1 more source

Baade's red sheet resolved into stars with HST in the Blue Compact Dwarf Galaxy VII Zw 403 [PDF]

, 1997
HST WFPC2 observations of the nearby Blue Compact Dwarf Galaxy VII~Zw~403 (= UGC 6456) resolve single stars down to M$_I$$\approx$-2.5, deep enough to identify red giants.
Bertelli G., Campbell A. W., Carozzi N., Hopp U., Hunter D. A., Karachentsev I. D., Kunth D., Mary M. Crone, Papaderos P., Regina E. Schulte-Ladbeck, Telles E., Ulrich Hopp   +11 more
core   +2 more sources

Undulating stratigraphy of a carbonate inner ramp lagoon and associated architectural facies heterogeneity: An example from the Late Jurassic Hanifa Formation, Central Saudi Arabia

Sedimentology, Volume 72, Issue 3, Page 734-762, April 2025.
Abstract This study offers new insights into the internal architecture of shallow marine carbonate sediments deposited in an epeiric sea formed on a broadly flooded passive margin continental shelf. The Ullayah Member of the Late Jurassic Hanifa Formation is exposed along the Tuwaiq Mountain Escarpment in Central Saudi Arabia and serves as an example ...
Pankaj Khanna, Ahmad R. Ramdani, Gaurav S. Gairola, Teyyuba Adigozalova, David Hodgetts, Volker C. Vahrenkamp   +5 more
wiley   +1 more source

Red Supergiants in Open Clusters

The Astrophysical Journal, 1970
openaire   +3 more sources

THE EMISSION-LINE DUSTY OBJECT IRAS 07080+0605, A LESS-EVOLVED EXAMPLE OF THE RED RECTANGLE

Odessa Astronomical Publications, 2020
The all-sky survey conducted by the InfraRed Astronomical Satellite (IRAS) in the 1980’s discovered many objects with infrared excesses whose nature has not been explored until recently.
S A. Khokhlov, A. S. Miroshnichenko, S. V, Zharikov, N. Manset, O. V. Zakhozhay, I. O. Bilinskyi, K. N. Grankin, A. V. kusakin, C. T. Omarov, R. I, Kokumbaeva, I. V. Reva, D. Korcakova, I. A. Usenko, A. K. Kuratova   +13 more
doaj   +1 more source

Circumstellar dust as a solution to the red supergiant supernova progenitor problem

, 2011
We investigate the red supergiant problem: the apparent dearth of Type IIP supernova progenitors with masses between 16 and 30 M_sun. Although red supergiants with masses in this range have been observed, none have been identified as progenitors in pre ...
Böhm-Vitense, Cardelli, Crowther, Danchi, de Jager, Dessart, Eggleton, Eldridge, Eldridge, Eldridge, Eldridge, Eldridge, Elias-Rosa, Filippenko, Fraser, Fraser, Heger, John J. Eldridge, Joseph J. Walmswell, Kotak, Levesque, Levesque, Li, Massey, Massey, Massey, Mattila, Maund, Mauron, Press, Schrader, Smartt, Smartt, Smith, Stancliffe, Utrobin, Utrobin, Utrobin, van Loon, Vink, Weidemann, Westera, Whittet, Williams, Woitke, Yoon   +45 more
core   +1 more source

Trans‐Crustal Geophysical Responses Beneath the Supergiant Timmins‐Porcupine Orogenic Gold Camp, Canada

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 3, March 2025.
Abstract A new 80‐site magnetotelluric (MT) survey, integrated with reprocessed seismic reflection profiles, across the supergiant Timmins‐Porcupine gold camp of the Abitibi greenstone belt (AGB) was conducted to investigate the architecture of crustal‐scale structures.
A. Q. Adetunji, I. J. Ferguson, J. M. Simmons, C. Ma, S. Cheraghi, D. B. Snyder, J. A. Ayer   +6 more
wiley   +1 more source