SwePub
Sök i LIBRIS databas

  Extended search

onr:"swepub:oai:research.chalmers.se:766c459d-5707-4341-bc1b-203c556968e5"
 

Search: onr:"swepub:oai:research.chalmers.se:766c459d-5707-4341-bc1b-203c556968e5" > Detection of HCO+ e...

  • 1 of 1
  • Previous record
  • Next record
  •    To hitlist
LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003020naa a2200493 4500
001oai:research.chalmers.se:766c459d-5707-4341-bc1b-203c556968e5
003SwePub
008171006s2007 | |||||||||||000 ||eng|
0247 a https://research.chalmers.se/publication/813102 URI
040 a (SwePub)cth
041 a engb eng
042 9 SwePub
072 7a art2 swepub-publicationtype
072 7a ref2 swepub-contenttype
1001 a Tafoya, D.4 aut
2451 0a Detection of HCO+ emission toward the planetary nebula K3-35
264 1c 2007
520 a We report the detection, for the first time, of HCO+(J = 1 -> 0) emission, as well as marginal CO(J = 1 -> 0) emission, toward the planetary nebula (PN) K3-35 as a result of a molecular survey carried out toward this source. We also report new observations of the previously detected CO( J 2 ! 1) and water maser emission, as well as upper limits for the emission of the SiO, (HCO+)-C-13, HNC, HCN, HC3OH, HC5N, CS, HC3N, (CO)-C-13, CN, and NH3 molecules. From the ratio of CO(J = 2 -> 1) to CO(J = 1 -> 0) emission we have estimated the kinetic temperature of the molecular gas, obtaining a value of similar or equal to 20 K. Using this result we have estimated a molecular mass for the envelope of similar or equal to 0.017M(circle dot) and an HCO+ abundance relative to H-2 of 6 x 10(-7), similar to the abundances found in other PNe. K3-35 is remarkable because it is one of the two PNe reported to exhibit water maser emission, which is present in the central region, as well as at a distance of similar or equal to 5000 AU from the center. The presence of molecular emission provides some clues that could help in understanding the persistence of water molecules in the envelope of K3-35. The HCO+ emission could be arising in dense molecular clumps, which may provide the shielding mechanism that protects water molecules in this source.
650 7a NATURVETENSKAPx Fysik0 (SwePub)1032 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciences0 (SwePub)1032 hsv//eng
653 a ASYMPTOTIC GIANT BRANCH
653 a stars : individual (K3-35)
653 a CO
653 a STARS
653 a RADIO MORPHOLOGY
653 a WATER-MASER EMISSION
653 a radio lines : ISM
653 a planetary nebulae : general
653 a ENVELOPES
653 a ISM : molecules
653 a circumstellar matter
7001 a Gomez, Y.4 aut
7001 a Anglada, G.4 aut
7001 a Loinard, L.4 aut
7001 a Torrelles, J. M.4 aut
7001 a Miranda, L. F.4 aut
7001 a Osorio, M.4 aut
7001 a Franco-Hernandez, R.4 aut
7001 a Nyman, Lars-Åke,d 1954u Chalmers tekniska högskola,Chalmers University of Technology4 aut
7001 a Nakashima, J.4 aut
7001 a Deguchi, S.4 aut
7102 a Chalmers tekniska högskola4 org
7730 t Astronomical Journalg 133:2, s. 364-369q 133:2<364-369x 1538-3881x 0004-6256
8564 8u https://research.chalmers.se/publication/81310

Find in a library

To the university's database

  • 1 of 1
  • Previous record
  • Next record
  •    To hitlist

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Close

Copy and save the link in order to return to this view