A spectroscopic atlas of post-AGB stars and planetary nebulae  
 selected from the IRAS point source catalogue

Suárez, Olga; García-Lario, P.; Manchado, A.; Manteiga, M.; Ulla, A.; Pottasch, S. R.

doi:10.1051/0004-6361:20054108

Cited by 165 publications

(210 citation statements)

References 30 publications

Supporting

Mentioning

195

Contrasting

Unclassified

Order By: Relevance

“…The subgroup of H2O-PNe, IRAS 19255+2123 (K3−35), IRAS 17347−3139, and IRAS 16333−4807, would be in a somewhat later evolutionary stage. Finally, IRAS 18061−2505 would be more evolved since it is completely visible in the optical (Suárez et al 2006), showing at this wavelength the central star and two bipolar lobes with a total extension of ≃ 45 arcsec (≃ 59000 au at the distance of 1.3 kpc).…”

Section: Comparison With Other H2o Maser-emitting Pnementioning

confidence: 91%

H2O maser emission associated with the planetary nebula IRAS 16333−4807

Uscanga

Gómez

Miranda

et al. 2014

Monthly Notices of the Royal Astronomical Society

Self Cite

View full text Add to dashboard Cite

We present simultaneous observations of H 2 O maser emission and radio continuum at 1.3 cm carried out with the Australia Telescope Compact Array towards two sources, IRAS 16333−4807 and IRAS 12405−6219, catalogued as planetary nebula (PN) candidates, and where single-dish detections of H 2 O masers have been previously reported. Our goal was to unambiguously confirm the spatial association of the H 2 O masers with these two PN candidates. We detected and mapped H 2 O maser emission in both fields, but only in IRAS 16333−4807 the maser emission is spatially associated with the radio continuum emission. The properties of IRAS 16333−4807 provide strong support for the PN nature of the object, hereby confirming it as the fifth known case of a H 2 O maser-emitting PN. This source is bipolar, like the other four known H 2 O maser-emitting PNe, indicating that these sources might pertain to a usual, but short phase in the evolution of bipolar PNe. In IRAS 12405−6219, the H 2 O maser and radio continuum emission are not associated with each other and, in addition, the available data indicate that this source is an H ii region rather than a PN.

show abstract

Section: Comparison With Other H2o Maser-emitting Pnementioning

confidence: 91%

H2O maser emission associated with the planetary nebula IRAS 16333−4807

Uscanga

Gómez

Miranda

et al. 2014

Monthly Notices of the Royal Astronomical Society

Self Cite

View full text Add to dashboard Cite

show abstract

“…The other very likely post-AGBs indicated by us are PDS 27,174,204,216,and 353. Results from other works support these suggestions at least for two of them: PDS 27 (Suárez et al 2006) and PDS 174 (Sunada et al 2007). …”

Section: Conclusion and Perspectives For Future Workmentioning

confidence: 54%

Distinguishing post-AGB impostors in a sample of pre-main sequence stars

Vieira

Gregorio-Hetem

Hetem

et al. 2010

A&A

View full text Add to dashboard Cite

Context. A sample of 27 sources, cataloged as pre-main sequence stars by the Pico dos Dias Survey (PDS), is analyzed to investigate a possible contamination by post-AGB stars. The far-infrared excess due to dust present in the circumstellar envelope is typical of both categories: young stars and objects that have already left the main sequence and are suffering severe mass loss. Aims. The two known post-AGB stars in our sample inspired us to seek for other very likely or possible post-AGB objects among PDS sources previously suggested to be Herbig Ae/Be stars, by revisiting the observational database of this sample. Methods. In a comparative study with well known post-AGBs, several characteristics were evaluated: (i) parameters related to the circumstellar emission; (ii) spatial distribution to verify the background contribution from dark clouds; (iii) spectral features; and (iv) optical and infrared colors. Results. These characteristics suggest that seven objects of the studied sample are very likely post-AGBs, five are possible post-AGBs, eight are unlikely post-AGBs, and the nature of seven objects remains unclear.

show abstract

“…Its SpT has been reported to be an early G (Suarez et al 2006;Andrews & Williams 2007b), an early K (Struve & Rudkjobing 1949), and an M star (Kimeswenger et al 2004). Our measurements of its TiO-7140 index (see Section 3.3) suggest it is not an M-type star (SpT TiO <0).…”

Section: A2 Sr21amentioning

confidence: 62%

Searching for Spectroscopic Binaries Within Transition Disk Objects*

Kohn

Shkolnik

Weinberger

et al. 2016

ApJ

View full text Add to dashboard Cite

Transition disks (TDs) are intermediate stage circumstellar disks characterized by an inner gap within the disk structure. To test whether these gaps may have been formed by closely orbiting, previously undetected stellar companions, we collected high-resolution optical spectra of 31 TD objects to search for spectroscopic binaries (SBs). Twenty-four of these objects are in Ophiuchus and seven are within the Coronet, Corona Australis, and Chameleon I star-forming regions. We measured radial velocities for multiple epochs, obtaining a median precision of 400 ms −1 . We identified double-lined SB SSTc2d J163154.7-250324 in Ophiuchus, which we determined to be composed of a K7(±0.5) and a K9(±0.5) star, with orbital limits of a<0.6 au and P<150 days. This results in an SB fraction of -+ 0.04 0.03 0.12 in Ophiuchus, which is consistent with other spectroscopic surveys of non-TD objects in the region. This similarity suggests that TDs are not preferentially sculpted by the presence of close binaries and that planet formation around close binaries may take place over similar timescales to that around single stars.

show abstract

A spectroscopic atlas of post-AGB stars and planetary nebulae selected from the IRAS point source catalogue

Cited by 165 publications

References 30 publications

H2O maser emission associated with the planetary nebula IRAS 16333−4807

H2O maser emission associated with the planetary nebula IRAS 16333−4807

Distinguishing post-AGB impostors in a sample of pre-main sequence stars

Searching for Spectroscopic Binaries Within Transition Disk Objects*

Contact Info

Product

Resources

About