From jop at astro.columbia.edu Wed Nov 18 21:59:40 2015 From: jop at astro.columbia.edu (Joe Patterson) Date: Wed, 18 Nov 2015 21:59:40 -0500 Subject: (cba:news) px and, and quit on RW Tri Message-ID: <564D3B1C.3040804@astro.columbia.edu> I just wanted to second Enrique's request re PX And. We've had some success on this star, but only once in previous seasons saw the positive and negative superhumps simultaneously - the first year, when our lack of multiple longitudes made the conclusions iffy. This is our chance to nail it down. The RW Tri is really good - so good that we've just about reached the sensitivity of our telescopes and longitude distribution. Short of someone moving to Asia or hijacking the Kepler telescope, we've reached our limit. I hope LT Eri and V1294 Tau can get some love now. Faint but rewarding! Continuing on our long and fruitful work on the SW Sexers (certified and candidate), here are four guys promising for search: AT Cnc, AC Cnc, HS0455+83 and HS0220+06. None yet merits a general call, but take a few nights and see what pops up. And it's time to fire up TV Col - mainly for southern observers, but at -32 it's a candidate for some northern observers (e.g. southern USA, *unless* Josch or Arto adopts it. Back from the AAVSO meeting, more after I catch up with work..... joe ____________________________________________________________ Center for Backyard Astrophysics (CBA) mailing lists https://cbastro.org/communications/mailing-lists/ From jop at astro.columbia.edu Thu Nov 19 20:36:03 2015 From: jop at astro.columbia.edu (Joe Patterson) Date: Thu, 19 Nov 2015 20:36:03 -0500 Subject: (cba:news) FS Aur, finis Message-ID: <564E7903.7060405@astro.columbia.edu> FS Aurigae is definitely finished for the year. Got a 20-year cycle count now. Haven't figured out what it means, but the challenge now is human ingenuity, not more data. Pretty good coverage this year and last year - especially from Ken Menzies and Tomas Gomez. joe ____________________________________________________________ Center for Backyard Astrophysics (CBA) mailing lists https://cbastro.org/communications/mailing-lists/ From jop at astro.columbia.edu Sat Nov 21 08:44:56 2015 From: jop at astro.columbia.edu (Joe Patterson) Date: Sat, 21 Nov 2015 08:44:56 -0500 Subject: (cba:news) BZ Cam, finis Message-ID: <56507558.1080703@astro.columbia.edu> David Cejudo and Joe Ulowetz have been observing up a storm on BZ Cam for 1.5 months. We're ready to call it quits. The period structure is revealed, but not likely to clarify further with additional observation. Lots of great northern targets, still largely unobserved, in that 4h - 9h sector of the sky! joe ____________________________________________________________ Center for Backyard Astrophysics (CBA) mailing lists https://cbastro.org/communications/mailing-lists/ From jop at astro.columbia.edu Tue Nov 24 12:02:16 2015 From: jop at astro.columbia.edu (Joe Patterson) Date: Tue, 24 Nov 2015 12:02:16 -0500 Subject: (cba:news) Fwd: [vsnet-alert 19293] NSV 1440 = ASASSN-15sz: updated period In-Reply-To: References: Message-ID: <56549818.5020702@astro.columbia.edu> Sounds like quite a fascinating object, well placed for the southerners! Berto, can you provide comp star suggestions? joe -------- Forwarded Message -------- Return-Path: Received: from sedna ([unix socket]) by sedna (Cyrus v2.1.18-IPv6- NSV 1440 = ASASSN-15sz: updated period Berto Monard has reported new observations. The period of 0.012618(9) d appears to be secure. The profile resemble those of superhumps. Spectroscopic observations are also required. Basic data: ASASSN-15sz --- ------- 3:55:17.89 -82:26:11.2 2015-11-20.25 14.23 SDSS DSS VIZIER ------- bright CV candidate caught early, GALEX and X-ray match, V>16.8 on 2015-11-19.19, V=13.8 on 2015-11-20.30 NSV01440 20151119.19 <168V ASN NSV01440 20151120.30 138V ASN ____________________________________________________________ Center for Backyard Astrophysics (CBA) mailing lists https://cbastro.org/communications/mailing-lists/ From jop at astro.columbia.edu Wed Nov 25 04:54:43 2015 From: jop at astro.columbia.edu (Joe Patterson) Date: Wed, 25 Nov 2015 04:54:43 -0500 Subject: (cba:news) semi-colons, nyet Message-ID: <56558563.5010102@astro.columbia.edu> Hi CBAers, Sorry to annoy with something so trivial, but... I notice that some CBAers are starting to send their data with the columns separated by semi-colons (;). Some of my analysis and plotting programs choke on the semicolon. It's straightforward to eliminate it manually, but after doing it about a hundred times, I conjured up enough guts to ask you to change, if possible. Spaces amd/or commas are fine, of course. If you're stuck with semicolons for some reason, fine. It just takes a minute to fix it... but now that many datasets have them, I've been making this correction very fast, opening the door to errors. joe ____________________________________________________________ Center for Backyard Astrophysics (CBA) mailing lists https://cbastro.org/communications/mailing-lists/ From jop at astro.columbia.edu Sun Nov 29 13:05:02 2015 From: jop at astro.columbia.edu (Joe Patterson) Date: Sun, 29 Nov 2015 13:05:02 -0500 Subject: (cba:news) HS 0455+8315 Message-ID: <565B3E4E.9080209@astro.columbia.edu> Hi CBAers, Enrique has been observing up a storm on this eclipsing novalike - supposedly an SW Sex star, though the exact meaning of that term is still murky. Great, long light curves, as befits the star's coordinates... but so far, no help from other longitudes. It's a pretty easy target - about 15.3 out of eclipse, and 16.6 at minimum. The light curves so far look like they will yield a rich harvest: other signals besides Porb. Nice target for the North Americans! Exact (published, anyway) coordinates: 5 06 48.5, +83 19 23 (2000) joe ____________________________________________________________ Center for Backyard Astrophysics (CBA) mailing lists https://cbastro.org/communications/mailing-lists/