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http://hdl.handle.net/20.500.12386/29165
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Mignani, R. P. | en_US |
dc.contributor.author | DE LUCA, Andrea | en_US |
dc.contributor.author | Zharikov, S. | en_US |
dc.contributor.author | Hummel, W. | en_US |
dc.contributor.author | Becker, W. | en_US |
dc.contributor.author | PELLIZZONI, ALBERTO PAOLO | en_US |
dc.date.accessioned | 2020-12-23T14:42:41Z | - |
dc.date.available | 2020-12-23T14:42:41Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/29165 | - |
dc.description.abstract | The X-ray source CXO J085201.4-461753 in the few kyr-old Vela Jr. supernova remnant (SNR, G266.2-1.2) belongs to the peculiar class of isolated neutron stars dubbed `Central Compact Objects' (CCOs). At variance with the other CCOs, which are only detected in the X-rays, CXO J085201.4-461753 has been possibly detected also at other wavelengths. In particular, a candidate near-infrared counterpart (H = 21.6 ± 0.1) was detected by the Very Large Telescope (VLT) in addition to a 6 arcsec-wide nebula detected in Hα, interpreted as a velocity-driven bow shock. Here, we present new near-infrared and optical VLT observations of the candidate counterpart to CXO J085201.4-461753 and its nebula to confirm the proposed associations. Moreover, we used archival Chandra observations to measure for the first time the CXO J085201.4-461753 proper motion. The comparison between the two sets of near-infrared VLT images, taken 10.56 yr apart, do not show evidence of proper motion for the candidate counterpart to CXO J085201.4-461753, expected from its 4 arcmin offset from the SNR geometrical centre, with a 3σ upper limit of ∼10 mas yr<SUP>-1</SUP>. This is much smaller than the expected proper motion of ∼50-100 mas yr<SUP>-1</SUP>, which, in turn, is below the 3σ upper limit of ∼300 mas yr<SUP>-1</SUP> that we obtained with Chandra. At the same time, VLT spectroscopy resolved the nebula optical emission, which is dominated by the N II doublet at 6548 and 6584 Å and not by Hα. To summarize, we conclude that the proposed near-infrared counterpart is likely unassociated with CXO J085201.4-461753 and that the nebula is not a velocity-driven bow shock. | en_US |
dc.language.iso | eng | en_US |
dc.title | The nature of the infrared counterpart and of the optical nebula associated with the Central Compact Object in Vela Jr | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stz1195 | en_US |
dc.identifier.scopus | 2-s2.0-85067978610 | en_US |
dc.identifier.isi | 000474908200097 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article-abstract/486/4/5716/5484906?redirectedFrom=fulltext | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 486 | en_US |
dc.relation.issue | 4 | en_US |
dc.relation.firstpage | 5716 | en_US |
dc.relation.lastpage | 5725 | en_US |
dc.type.referee | REF_1 | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2019MNRAS.486.5716M | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | IASF Milano | - |
crisitem.author.dept | O.A. Cagliari | - |
crisitem.author.orcid | 0000-0001-6739-687X | - |
crisitem.author.orcid | 0000-0002-4590-0040 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
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