Abstract
We present spectroscopic observations of the classical nova CP Crucis (Nova Crux 1996) obtained with the Infrared Space Observatory Short Wavelength Spectrometer (ISO SWS) and the Anglo-Australian Telescope using both the Infrared Imaging Spectrograph and the Royal Greenwich Observatory Spectrograph. From the expansion parallax, we find that CP Crucis lies at a distance of 2.6 ± 0.5 kpc and reached a maximum My of - 8.7 at 0.96 days after discovery. We find abundance enhancements versus solar by mass of 75, 17, and 27 for N, O, and Ne, respectively. Additionally, we constrain the Mg abundance in the ejecta to be approximately solar. Abundance analysis suggests CP Crucis is an old Population I binary system. Combining the strong N and Ne abundances with the relatively low Mg abundance and a Ne/O ratio of 0.5, we propose that CP Crucis is an example of the "missing link" between CO and ONeMg novae.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 993-1005 |
| Number of pages | 13 |
| Journal | Astronomical Journal |
| Volume | 126 |
| Issue number | 2 1772 |
| DOIs | |
| State | Published - Aug 2003 |
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Keywords
- Circumstellar matter
- Novae, cataclysmic variables
- Stars: individual (Nova Crux 1996, CP Crucis)
ASJC Scopus subject areas
- Space and Planetary Science
- Astronomy and Astrophysics
Cite this
Abundance anomalies in CP Crucis (Nova Crux 1996). / Lyke, James E.; Koenig, X. P.; Barlow, M. J.; Gehrz, R. D.; Woodward, Charles E.; Starrfield, Sumner; Péquignot, D.; Evans, A.; Salama, A.; González-Riestra, R.; Greenhouse, Matthew A.; Hjellming, R. M.; Jones, Terry J.; Krautter, Joachim; Öoglman, H. B.; Mark Wagner, R.; Lumsden, S. L.; Williams, R. E.
In: Astronomical Journal, Vol. 126, No. 2 1772, 08.2003, p. 993-1005.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Abundance anomalies in CP Crucis (Nova Crux 1996)
AU - Lyke, James E.
AU - Koenig, X. P.
AU - Barlow, M. J.
AU - Gehrz, R. D.
AU - Woodward, Charles E.
AU - Starrfield, Sumner
AU - Péquignot, D.
AU - Evans, A.
AU - Salama, A.
AU - González-Riestra, R.
AU - Greenhouse, Matthew A.
AU - Hjellming, R. M.
AU - Jones, Terry J.
AU - Krautter, Joachim
AU - Öoglman, H. B.
AU - Mark Wagner, R.
AU - Lumsden, S. L.
AU - Williams, R. E.
PY - 2003/8
Y1 - 2003/8
N2 - We present spectroscopic observations of the classical nova CP Crucis (Nova Crux 1996) obtained with the Infrared Space Observatory Short Wavelength Spectrometer (ISO SWS) and the Anglo-Australian Telescope using both the Infrared Imaging Spectrograph and the Royal Greenwich Observatory Spectrograph. From the expansion parallax, we find that CP Crucis lies at a distance of 2.6 ± 0.5 kpc and reached a maximum My of - 8.7 at 0.96 days after discovery. We find abundance enhancements versus solar by mass of 75, 17, and 27 for N, O, and Ne, respectively. Additionally, we constrain the Mg abundance in the ejecta to be approximately solar. Abundance analysis suggests CP Crucis is an old Population I binary system. Combining the strong N and Ne abundances with the relatively low Mg abundance and a Ne/O ratio of 0.5, we propose that CP Crucis is an example of the "missing link" between CO and ONeMg novae.
AB - We present spectroscopic observations of the classical nova CP Crucis (Nova Crux 1996) obtained with the Infrared Space Observatory Short Wavelength Spectrometer (ISO SWS) and the Anglo-Australian Telescope using both the Infrared Imaging Spectrograph and the Royal Greenwich Observatory Spectrograph. From the expansion parallax, we find that CP Crucis lies at a distance of 2.6 ± 0.5 kpc and reached a maximum My of - 8.7 at 0.96 days after discovery. We find abundance enhancements versus solar by mass of 75, 17, and 27 for N, O, and Ne, respectively. Additionally, we constrain the Mg abundance in the ejecta to be approximately solar. Abundance analysis suggests CP Crucis is an old Population I binary system. Combining the strong N and Ne abundances with the relatively low Mg abundance and a Ne/O ratio of 0.5, we propose that CP Crucis is an example of the "missing link" between CO and ONeMg novae.
KW - Circumstellar matter
KW - Novae, cataclysmic variables
KW - Stars: individual (Nova Crux 1996, CP Crucis)
UR - http://www.scopus.com/inward/record.url?scp=0141864383&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0141864383&partnerID=8YFLogxK
U2 - 10.1086/376477
DO - 10.1086/376477
M3 - Article
AN - SCOPUS:0141864383
VL - 126
SP - 993
EP - 1005
JO - Astronomical Journal
JF - Astronomical Journal
SN - 0004-6256
IS - 2 1772
ER -