#30 doradus B

[spacewonder19]

Colorful chaos of 30 Doradus B ©

[netmassimo]

An article published in "The Astronomical Journal" reports evidence that the supernova remnant cataloged as 30 Doradus B, or simply 30 Dor B, is the result of at least two separate supernovae and not just one. A team of researchers led by Wei-An Chen of the National Taiwan University combined observations conducted with various telescopes in different electromagnetic bands to find evidence of a vast but very faint shell spanning 130 light-years that adds to the remnant visible at optical frequencies. At the same time, a wind was detected that generates a nebula of the type called pulsar wind nebula. That remnant can't have been generated by a single supernova.

[bushichan]

केशव 「keshava」

the one who seated on braids of gravity, twirls around strings of multiverses with just a glance

in Sanatana Dharma (Hindu) philosophy, reality is but an artwork of के��व, or Vishnu, the one who is everywhere (consciousness), reclining on a seat that is an infinite hooded snake Sèsha (शेष) who holds infinite universes

BG: 30 Doradus B from Chandra Observatory (3/1/24)

* start fangirl section *

look there was a trial to come up with a fancy caption and all for this but seriously though that God Vishnu is so mesmerizing, vocabulary starts glitching and honestly look LOOK AT KESHAVA THE GOD WITH HAIR THAT IS VERILY THE STRANDS OF CHAOS; the one who twirls around infinity like a swirl of a hair lock, as effortlessly as a pretty lady would while flirting with her love beloved, no words describe the absolute perfection of the God of Gods who holds strings of multiverses, like mycelium that makes up an incredibly intricate kingdom

[aldocerandaz]

30 Doradus B: Los telescopios de la NASA comienzan el año con una doble explosión

Los rayos X de Chandra han proporcionado evidencia de al menos dos explosiones relacionadas con el remanente de supernova 30 Doradus B.Normalmente, sólo hay una supernova asociada con un remanente de supernova.30 Doradus B se encuentra en la Gran Nube de Magallanes, una pequeña galaxia vecina de la Vía Láctea.Una nueva imagen de 30 Doradus B contiene datos de rayos X, ópticos e infrarrojos. 30…

[abdullapulatov]

Последствия взрыва двух звезд показали на новом снимке

#интересные_факты Последствия взрыва двух звезд показали на новом снимке

Для создания красочно��о изображения использовали данные четырех мощнейших телескопов. Специалисты NASA опубликовали снимок того, что образовалось после «двойного взрыва» в космосе. На фото виден объект 30 Doradus B (сокращенно 30 Dor B), расположенный в Большом Магеллановом Облаке. Это небольшая галактика ..................(Читать далее).................. https://qwert.uz/2024/01/08/%d0%bf%d0%be%d1%81%d0%bb%d0%b5%d0%b4%d1%81%d1%82%d0%b2%d0%b8%d1%8f-%d0%b2%d0%b7%d1%80%d1%8b%d0%b2%d0%b0-%d0%b4%d0%b2%d1%83%d1%85-%d0%b7%d0%b2%d0%b5%d0%b7%d0%b4-%d0%bf%d0%be%d0%ba%d0%b0%d0%b7%d0%b0/

[gaetaniu]

I telescopi della NASA iniziano l'anno con un doppio botto

Un’immagine colorata e festosa mostra diversi tipi di luce che contengono i resti di non una, ma almeno due stelle esplose. Questo residuo di supernova è noto come 30 Doradus B (in breve 30 Dor B) e fa parte di una regione più ampia dello spazio in cui le stelle si sono formate continuamente negli ultimi 8-10 milioni di anni. Si tratta di un complesso paesaggio di nubi scure di gas, giovani…

[delectablywaywardbeard-blog]

Il 2024 inaugurato da due esplosioni stellari

I telescopi della Nasa inaugurano il nuovo anno con ben due esplosioni stellari: i loro resti sono visibili in un’immagine estremamente colorata e festosa realizzata puntando gli obiettivi verso la regione della supernova 30 Doradus B, che si trova in un complesso paesaggio fatto di nubi oscure di gas, giovani stelle, shock ad alta energia e gas surriscaldato a 160.000 anni luce dalla Terra nella…

[astroblogs]

[michaelgabrill]

NASA Telescopes Start the Year With a Double Bang

A colorful, festive image shows different types of light containing the remains of not one, but at least two, exploded stars. This supernova remnant is known as 30 Doradus B (30 Dor B for short) and is part of a larger region of space where stars have been continuously forming for the past 8 to […] from NASA https://ift.tt/tJzsVvH

[apod]

2020 November 13

The Tarantula Zone Image Credit & Copyright: Ignacio Diaz Bobillo

Explanation: The Tarantula Nebula, also known as 30 Doradus, is more than a thousand light-years in diameter, a giant star forming region within nearby satellite galaxy the Large Magellanic Cloud. About 180 thousand light-years away, it's the largest, most violent star forming region known in the whole Local Group of galaxies. The cosmic arachnid sprawls across the top of this spectacular view, composed with narrowband filter data centered on emission from ionized hydrogen and oxygen atoms. Within the Tarantula (NGC 2070), intense radiation, stellar winds and supernova shocks from the central young cluster of massive stars, cataloged as R136, energize the nebular glow and shape the spidery filaments. Around the Tarantula are other star forming regions with young star clusters, filaments, and blown-out bubble-shaped clouds. In fact, the frame includes the site of the closest supernova in modern times, SN 1987A, right of center. The rich field of view spans about 2 degrees or 4 full moons, in the southern constellation Dorado. But were the Tarantula Nebula closer, say 1,500 light-years distant like the local star forming Orion Nebula, it would take up half the sky.

∞ Source: apod.nasa.gov/apod/ap201113.html

[rcmclachlan]

Here are some of the highlights of this year’s Attractive People I Want To Bone... IN SPAAACE calendar. For those of you new to this blog, this is a calendar I make that combines my two favorite things: hot guys and space.

Colin Farrell: Nubecula Minor (NGC 292) Michael B. Jordan: Prawn Nebula (Gum 56) Lee Byung-Hun: Tarantula Nebula (30-Doradus) Idris Elba: Spiral Galaxy (ESO137-001) Tom Hiddleston: Thor’s Helmet (NGC 2359) Oscar Isaac: Star-Forming Region (M43) Daniel Henney : Lagoon Nebula (M8)

Previous years here

[netmassimo]

Un articolo pubblicato sulla rivista "The Astronomical Journal" riporta prove che i resti di supernova catalogati come 30 Doradus B, o semplicemente 30 Dor B, sono il frutto di almeno due supernove separate e non di una sola. Un team di ricercatori guidato da Wei-An Chen dell'Università Nazionale di Taiwan ha combinato osservazioni condotte con diversi telescopi in diverse bande elettromagnetiche per trovare le tracce di un vasto ma molto tenue involucro che si estende per 130 anni luce che si aggiunge ai resti visibili a frequenze ottiche. Allo stesso tempo, è stato rilevato un vento che genera una nebullosa del tipo che viene chiamato in gergo pulsar wind nebula. Sono resti che non possono essere stati generati da un'unica supernova.

[nuryuviandthecats]

Inilah yg dilihat NASA di hari ultahku... 30 DORADUS NEBULA #30doradusnebula masha Allah... 😊😊😊#dirumahaja #ngantuk https://www.instagram.com/p/B-gMZElnKaW/?igshid=yobquontlyak

[julepler]

Top 5 space things outside our solar system o:

1. My favorite Hubble image, star cluster Westurlund 2! 

2. The Tarantula Nebula / 30 Doradus (in the Large Magellanic Cloud galaxy)

3. The Perseus’ Cluster’s quasar, which is producing sound! Humming a nice B-flat 57 octaves below middle C...

4. Pleiades (M45) is my favorite naked-eye observation :)

5. The Voyager spacecraft (it is technically outside our solar system!)

Thanks! :D

[ask me my “TOP 5/TOP 10” anything!]

[the-telescope-times]

Scientists Are Trying to Figure Out What This Weird Rogue Object In Our Galaxy Is

Scientists have been studying a “rogue” object in our galaxy, but they’re not sure if it’s a planet or a brown dwarf.

The planetary mass object has the catchy moniker of CFBDSIR J214947.2-040308.9 (CFBDSIR 2149-0403 for short). It was first discovered in 2012, when scientists thought it was in a group of 30 stars known as AB Doradus, 65 light-years from Earth.

A new study to be published in the journal of Astronomy and Astrophysics (available on arXiv) may force a rethink, however. An international team of astronomers led by Philippe Delorme of the Grenoble Alpes University in France (who led the initial research) has found the object is not in this group at all, and its true classification is a bit of a mystery.

“[Our] results show that it is very unlikely that CFBDSIR 2149 is a member of the AB Doradus moving group,” the team notes in their paper.

Instead, they say this isolated object is located about 178 light-years from Earth on its own. Using a variety of instruments including the Very Large Telescope (VLT) in Chile, they also further constrained what this object might be by measuring its absorption spectrum, the light that made its way to us.

One possibility is that CFBDSIR 2149-0403 is a free-floating planet between 2 and 13 times the mass of Jupiter (similar to one called 51 Eridani b), and less than 500 million years old. The other is that it's an older metallicity-enhanced brown dwarf, about 2 to 3 billion years old, with a mass of between 2 to 40 times that of Jupiter. This type of object has more heavy elements than your average brown dwarf.

Isolated objects like this are not unheard of. Just last year, for example, astronomers found a rogue planet 95 light-years from Earth, seen by its powerful infrared emissions. Free-floating planets are typically kicked out of planetary systems by one of a number of methods, such as a star passing nearby.

A brown dwarf, on the other hand, is essentially a failed star. It is a large object that has not been able to start nuclear fusion in its core, but larger than a typical gas giant planet, although the distinction between the two is a bit murky.

The team behind this latest study thinks their findings may help work out the difference between them. If they can identify which type this object is, then its spectrum could be used to identify similar objects in future. ~ IFL Science

Photo Credit: TNS / SETI Institute / Danielle Fuselaar and Franck Marchis

[arxt1]

Properties of OB star-black hole systems derived from detailed binary evolution models. (arXiv:1912.09826v2 [astro-ph.SR] UPDATED)

The recent gravitational wave measurements have demonstrated the existence of stellar mass black hole binaries. It is essential for our understanding of massive star evolution to identify the contribution of binary evolution to the formation of double black holes. A promising way to progress is investigating the progenitors of double black hole systems and comparing predictions with local massive star samples such as the population in 30 Doradus in the Large Magellanic Cloud (LMC). Methods. To this purpose, we analyse a large grid of detailed binary evolution models at LMC metallicity with initial primary masses between 10 and 40 Msun, and identify which model systems potentially evolve into a binary consisting of a black hole and a massive main sequence star. We then derive the observable properties of such systems, as well as peculiarities of the OB star component. We find that about 3% of the LMC late O and early B stars in binaries are expected to possess a black hole companion, when assuming stars with a final helium core mass above 6.6 M to form black holes. While the vast majority of them may be X-ray quiet, our models suggest that these may be identified in spectroscopic binaries, either by large amplitude radial velocity variations ( > 50 km s ) and simultaneous nitrogen surface enrichment, or through a moderate radial velocity ( > 10 km/s ) and simultaneously rapid rotation of the OB star. The predicted mass ratios are such that main sequence companions could be excluded in most cases. A comparison to the observed OB+WR binaries in the LMC, Be/X-ray binaries, and known massive BH binaries supports our conclusion. We expect spectroscopic observations to be able to test key assumptions in our models, with important implications for massive star evolution in general, and for the formation of double-black hole mergers in particular.

from astro-ph.HE updates on arXiv.org https://ift.tt/392oMbu