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Observations Requested of Exoplanet Proxima Centauri b

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發表於 2017-3-17 09:04:49 | 顯示全部樓層 |閱讀模式
[size=13.3333px]AAVSO Alert Notice 571

[size=13.3333px]March 16, 2017

[size=13.3333px]Observations Requested of Exoplanet Proxima Centauri b

[size=13.3333px]Dr. Karen Collins (Vanderbilt University) has requested
[size=13.3333px]ground-based, follow-up observations of recently discovered
[size=13.3333px]exoplanet Proxima Centauri b. This exoplanet is a suspected
[size=13.3333px]Earth-size planet orbiting in the habitable zone of our nearest
[size=13.3333px]stellar neighbor, Proxima Centauri (V645 Cen). There exists a rough
[size=13.3333px]ephemeris of this target based on radial velocity measurements, so
[size=13.3333px]the predicted mid-transit times can vary +/- 6 hours. Therefore, it
[size=13.3333px]is requested that observations be as long as possible. The expected
[size=13.3333px]duration of the transit is less than two hours long. The transit
[size=13.3333px]depth is expected to be 5 mmag. However, because Proxima Centauri
[size=13.3333px]itself is a flare star, there may be large variations in the light
[size=13.3333px]curve.

[size=13.3333px]These observations are most suitable for those with prior
[size=13.3333px]experience conducting exoplanet observing.

[size=13.3333px]The Southern hemisphere target Proxima Centauri has a magnitude
[size=13.3333px]range of 11.1 - 11.3 V.

[size=13.3333px]Please contact Dennis Conti, AAVSO’s Exoplanet Section Chair, at
[size=13.3333px][email protected] if you are interested in participating in
[size=13.3333px]such observations and would like the predicted transit times, or
[size=13.3333px]if you have any further questions.

[size=13.3333px]Coordinates for Proxima Centauri (V645 Cen):
[size=13.3333px]R.A. 14 29 42.95  Dec. -62 40 46.2  (2000.0)

[size=13.3333px]Charts: Charts with a comparison star sequence for Proxima Centauri
[size=13.3333px]may be created using the AAVSO Variable Star Plotter (VSP) at
[size=13.3333px]https://www.aavso.org/vsp[size=13.3333px].

[size=13.3333px]This campaign is being monitored on the AAVSO Observing Campaigns
[size=13.3333px]webpage at [size=13.3333px]https://www.aavso.org/observing-campaigns[size=13.3333px].


[size=13.3333px]This AAVSO Alert Notice was compiled by Elizabeth O. Waagen from
[size=13.3333px]material supplied by Dr. Dennis Conti.

[size=13.3333px]----------------------------------

[size=13.3333px]ALERT NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION

[size=13.3333px]An Alert Notice archive is available at the following URL:
[size=13.3333px]https://www.aavso.org/alert-notice-archive

[size=13.3333px]Subscribing and Unsubscribing may be done at the following URL:
[size=13.3333px]https://www.aavso.org/observation-notification#alertnotices

[size=13.3333px]-------------------------------------------------

[size=13.3333px]Please support the AAVSO and its mission -- Join or donate today:
[size=13.3333px]https://www.aavso.org/apps/donate/


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