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TOPIC: Nova 1670 Vulpeculae

Blobrana

L

Posts: 131433

Date: Mar 23 21:41 2015

Nova Vulpeculae 1670	Permalink

Colliding Stars Explain Enigmatic Seventeenth Century Explosion New observations made with APEX and other telescopes reveal that the star that European astronomers saw appear in the sky in 1670 was not a nova, but a much rarer, violent breed of stellar collision. It was spectacular enough to be easily seen with the naked eye during its first outburst, but the traces it left were so faint that very careful analysis using submillimetre telescopes was needed before the mystery could finally be unravelled more than 340 years later. The results appear online in the journal Nature on 23 March 2015. Read more __________________

Blobrana

L

Posts: 131433

Date: Jan 19 21:51 2014

CK Vulpeculae	Permalink

Title: CKVul: evolving nebula and three curious background stars Author: M. Hajduk, P. A. M. van Hoof, A. A. Zijlstra We analyse the remnants of CK Vul (Nova Vul 1670) using optical imaging and spectroscopy. The imaging, obtained between 1991 and 2010, spans 5.6% of the life-time of the nebula. The flux of the nebula decreased during the last 2 decades. The central source still maintains the ionization of the innermost part of the nebula, but recombination proceeds in more distant parts of the nebula. Surprisingly, we discovered two stars located within 10 arcsec of the expansion centre of the radio emission that are characterized by pronounced long term variations and one star with high proper motion. The high proper motion star is a foreground object, and the two variable stars are background objects. The photometric variations of two variables are induced by a dusty cloud ejected by CK Vul and passing through the line of sight to those stars. The cloud leaves strong lithium absorption in the spectra of the stars. We discuss the nature of the object in terms of recent observations. Read more (2737kb, PDF) __________________

Blobrana

L

Posts: 131433

Date: Jun 19 09:24 2013

RE: Nova 1670 Vulpeculae	Permalink

CK Vulpeculae: This is a classical nova which erupted in 1670, but only recently has the star responsible (now in its quiescent or hibernating state) been identified Read more __________________

Blobrana

L

Posts: 131433

Date: Jun 19 09:23 2013

CK Vulpeculae	Permalink

Position (2000): RA: 194738.0, Dec: +271848 Read more __________________

Blobrana

L

Posts: 131433

Date: Jun 19 09:15 2013

Nova 1670 Vulpeculae	Permalink

This nova in constellation Vulpecula was discovered by Pere Dom Voiture Anthelme (ca. 1618 - Dec 14, 1683), a Carthusian monk in Dijon, France, on June 20, 1670. He discovered it as a star of about 3rd magnitude. It was independently noted by Johannes Hevelius (1611 - 1689) from Danzig on July 25, 1670. The nova faded from visibility until October, 1670, but had a second maximum in 1671, when again Anthelme recovered it on March 17. Read more __________________

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